Sverniciatori rassegna brevettuale

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ricerca del 13.7.99 (aggiornamento a giugno99)
parole chiave in PAINR: PAINT & REMOVING
parole chiave in PAINS: PAINT & STRIPPING
VERSIONE PRIVATA DI ESTENSIONI
brevetti
1 miscele a base di alcol benzilico:
1.1 con alcali (sistemi bifasici) e:
1.1.1- glicoli/ glicoleteri/ silicati (inibit. corr.)
1.
129:204261
A stripping composition and method of inhibiting etching.
Crisp, Ronald Anthony; Stevenson, Roland John (Confederate Chemicals Ltd., UK).
Eur. Pat. Appl. EP 860479 A2 26 Aug 1998, 6 pp. DESIGNATED STATES: R: AT, BE,
CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE, MC, PT, IE, SI, LT, LV, FI, RO.
(English). (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C09D009-
00. APPLICATION: EP 98-301185 18 Feb 1998. PRIORITY: GB 97-3436 19 Feb 1997.
DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products)
The present invention relates to a stripping compn. for removing coatings, in
particular org. coatings, from metal substrates particularly those which are
easily corroded or damaged. More particularly the invention is directed to a
method of removing an org. coating, in particular paint, from a substrate
comprising a soft metal, e.g., aluminum, magnesium or zinc, which substrate can
be easily damaged or etched by the effect of water and a strong alkali. The
compn. comprises a component which penetrates the coating and swells or
solubilizes it; a strong alkali accelerator which breaks down the coating
enabling it to be removed and a coupling agent (?forma poco chiara)
characterized in that the component which penetrates the coating and swells or
solubilizes it comprises benzyl alc. and the coupling agent comprises a glycol,
a glycol ether or mixts. thereof. The method comprises stripping a coating from
a metal substrate in a stripping bath contg. water and a stripping compn. of the
invention wherein a silicic component such as silicic acid or silicate is
introduced into the stripping bath: as part of the stripping compn.; as part of
a replenishing compn.; by addn. together with or sep. from a strong alkali
accelerator using a dissoln. chamber through which the stripping compn. is
pumped or by dissolving it into rinse water so that water which is carried back
into the bath carries the silicic with it. The use of the coupling agent
and(or) the silicic component prevents etching.
1.1.2 - esteri dibasici/ etossiproprionati/ silicati
(inibit. corr.)
2. - N.B: confrontare con preced. brev. EP 860479 della Confederate Chemicals
Ltd., UK
128:309555

Two-phase chlorine-free organic solvent-water compositions and method for
removing paint from a substrate.
Lawlor, Angela Mary; Braley, Joanna May; Whitton, Colin Alfred (Brent
International Plc; Lawlor, Angela Mary; Braley, Joanna May; Whitton, Colin
Alfred, UK). PCT Int. Appl. WO 9817734 A1 30 Apr 1998, 14 pp. DESIGNATED
STATES: W: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK,
EE, ES, FI, GB, GE, GH, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS,
LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK,
SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW, AM, AZ, BY, KG, KZ, MD, RU, TJ,
TM; RW: AT, BE, BF, BJ, CF, CG, CH, CI, CM, DE, DK, ES, FI, FR, GA, GB, GR, IE,
IT, LU, MC, ML, MR, NE, NL, PT, SE, SN, TD, TG. (English). (World Intellectual
Property Organization). CODEN: PIXXD2. CLASS: ICM: C09D009-00. APPLICATION:
WO 97-GB2917 22 Oct 1997. PRIORITY: GB 96-21955 22 Oct 1996. DOCUMENT TYPE:
Patent CA Section: 42 (Coatings, Inks, and Related Products)
A paint stripper useful for immersion of a painted substrate, esp. metal, in a
bath of the compn. or application in place comprises an aq. phase, a partially
water-sol. org. solvent, preferably benzyl alc., dibasic ester or ethyl-3-
ethoxypropionate, and a water-sol. acid or alkali activator compd. The total
amt. of org. solvent in the bath is 2-20%. Thus, a 2-phase system contg. benzyl
alc. (I) 20 (lower phase), potassium silicate 0.79, and water 79.21 wt.% (top
phase, satd. with I) removed uncured epoxy paint from aluminum in 7 h.
1.2 a base acquosa varia senza H2O2:
1.2.1 gelificato (e con alcol furfurilico)
3.
128:62987
Pseudoplastic, shear thinned paint stripper composition.
Nercissiantz, Ara Z.; Hans, Harvey (McGean-Rohco, Inc., USA). U.S. US 5696072 A
9 Dec 1997, 7 pp. (English). (United States of America). CODEN: USXXAM.
CLASS: ICM: C09D009-00. ICS: C09D009-04. NCL: 510206000. APPLICATION: US 95-
530520 19 Sep 1995. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and
Related Products)
The compn. comprises a mixt. of (A) 5-90% by wt. of ³1 org. solvent selected
from the group consisting of benzyl alc., alkyl-substituted benzyl alc.,
furfuryl alc., alkyl-substituted furfuryl alc. and acetylenic alc. contg. C3-5
atoms; (B) 0.05-5% of ³1 inorg. clay thickener; (C) 0.05-5% of ³1 org.
thickener; and (D) £94.9% by wt. of water. The method is carried out by (A)
contacting the paint with a paint stripper compn. for a period of time
sufficient to reduce the adhesion of the paint to a surface; and (B) removing
the paint and paint-stripper compn. from the surface. Thus, a paint stripper
was prepd. by blending 35:0.3 benzyl alc. and Methocell XUS 40443 mixt. and
62.9:1.5:0.3 water, Veegum T, and xanthan gum mixt.
1.2.2 con attivatore acido
4.
con acido formico - alcol benzilico - benzaldeide (ispessitore!)
129:68936
Aqueous paint stripper for removing coatings and highly crosslinked primers.
Lallier, Jean-Pierre (Elf Atochem S.A., Fr.). Eur. Pat. Appl. EP 846735 A1 10
Jun 1998, 7 pp. DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES, FR, GB, GR, IT,
LI, LU, NL, SE, MC, PT, IE, SI, LT, LV, FI, RO. (French). (European Patent
Organization). CODEN: EPXXDW. CLASS: ICM: C09D009-00. APPLICATION: EP 97-
402917 3 Dec 1997. PRIORITY: FR 96-15041 6 Dec 1996. DOCUMENT TYPE: Patent CA
Section: 42 (Coatings, Inks, and Related Products)

Coating removers,suitable for epoxy, polyurethane, and alkyd coatings, comprise
water 50-80, benzaldehyde and/or benzyl alc. 20-50, formic acid-based activator
optionally contg. a base 5-15, and acrylic thickener (in the absence of
benzaldehyde) 0.5-10%. The compns. are esp. suitable for aeronautical coatings
and contain no chlorinated solvents or phenols. Several examples are given
which contain ~50-70% water.
1.2.3 basico (NH3) con terpeni
5.
129:204264
Paint-stripping formulations containing terpene for retarded solvent
evaporation, their preparation and use.
Distaso, John; DeGuzman, Azucena G. (Elf Atochem North America, Inc., USA).
00. APPLICATION: EP 98-301401 25 Feb 1998. PRIORITY: US 97-804651 25 Feb 1997.
Evapn. of water from benzyl alc. contg. water-in-oil emulsions is retarded by
incorporating a terpene in the stripper org. phase, e.g., benzyl alc. Thus, a
stripper comprising benzyl alc. 40.0, hydroxypropyl cellulose 0.5, arom.
hydrocarbon solvent 0.5, paraffin wax 0.3, surfactant 0.7, corrosion inhibitors
3.5, ammonia 5.0, water 41.5, and d-limonene (I) 8.0 parts was used to strip
(MIL-R-81294) 50% of panels painted with a polyurethane primer-polyurethane
topcoat and 40% of panels coated with an epoxy primer-polyurethane topcoat,
compared to 0 and 0 for a compn. without I.
1.3 con H2O2 e:
1.3.1 con acido glicolico
6.
128:206031
Water-based aromatic alcohol-hydroxycarboxylic acid-peroxide paint-stripping
compositions and their preparation.
Vitomir, Sergio (Napier International Technologies, Inc., Can.). U.S. US
5728666 A 17 Mar 1998, 4 pp. (English). (United States of America). CODEN:
USXXAM. CLASS: ICM: C11D003-395. ICS: C11D003-20;
C11D003-39; B08B003-08. NCL: 510203000. APPLICATION: US 96-770093 19 Dec 1996.
Section cross-reference(s): 59
An environmentally safe chlorinated solvent-free compn. which is nonflammable,
fully biodegradable, and low odor and useful for removing various coatings from
metal substrates, comprises an arom. alc., optionally with an arom. ether,
hydrogen peroxide, a hydroxycarboxylic acid, and water. The compn. can be
prepd. as a liq. for immersion/dipping operations or as a thick paste "cling
type" material which forms a thin film. Thus, a compn. of benzyl alc. 35.0,
glycolic acid 10.0, H2O2 9.0, 2-mercaptobenzothiazole 0.2, propylene glycol 4.0,
acetanilide 0.03, and water 41.77 parts completely removed a yellow epoxy-type
primer and a gray linear polyurethane topcoat from an aluminum alloy panel in 25
min after dipping, compared with 90% removal after 120 min for a compn. without
the H2O2.

1.3.2 pH neutro
1.3.2.1 (H2O2 o urea perossido)
7.
128:193838
Paint stripping composition.
Maxwell, Jeffrey W.; Moore, Michael E.; Summerfield, Stephen R.; Tear, David M.
(Gage Products Co., USA). U.S. US 5721204 A 24 Feb 1998, 6 pp. (English).
(United States of America). CODEN: USXXAM. CLASS: ICM: C11D007-18. NCL:
510206000. APPLICATION: US 96-610155 29 Feb 1996. DOCUMENT TYPE: Patent CA
A paint stripping compn. having near-neutral pH includes a peroxide, H2O and an
org. solvent. The solvents may include benzyl alc. and/or
cyclohexanedimethanol, and the peroxide may comprise H2O2 or urea peroxide.
1.3.2.2 con dialchilcarbonato (benzil alcol opz.)
8.
130:26303
Paint and coating remover.
Marquis, Edward T.; Baldwin, Robert E. (Huntsman Petrochemical Corp., USA). PCT
Int. Appl. WO 9853016 A1 26 Nov 1998, 25 pp. DESIGNATED STATES: W: AL, AM, AT,
AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU,
IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW,
MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN,
AM, AZ, BY, KG, KZ, MD, RU, TJ, TM; RW: AT, BE, BF, BJ, CF, CG, CH, CI, CM, CY,
DE, DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR, NE, NL, PT, SE, SN, TD,
TG. (English). (World Intellectual Property Organization). CODEN: PIXXD2.
CLASS: ICM: C09D009-00. APPLICATION: WO 98-US10576 22 May 1998. PRIORITY: US
97-47529 23 May 1997; US 97-48450 3 Jun 1997. DOCUMENT TYPE: Patent CA Section:
42 (Coatings, Inks, and Related Products)
A compn. useful as a paint and coating remover comprises alkylene carbonate,
such as propylene carbonate or ethylene carbonate, hydrogen peroxide, and water,
and optionally an alc. such as benzyl alc. A process for removing paint
comprises applying a compn. contg. alkylene carbonate, hydrogen peroxide, and
water to a painted surface for a time and under conditions effective to cause
blistering or bubbling of the paint. Another compn. useful as a paint remover
comprises a dialkyl carbonate, hydrogen peroxide, and water, optionally contg.
an alc., optionally contg. a glycol ether.
1.4 con anisolo e/o pirrolo:
1.4.1 anisolo
9.
129:204262
Paint-stripping formulations, their preparation and use.
Distaso, John; Deguzman, Azucena G. (Elf Atochem North America, Inc., USA).
The rate of stripping of benzyl alc. contg. water-in-oil emulsions is improved
by incorporating anisole into the org. phase.
N.B. vedi anche (McGean-Rohco Inc., USA) EP 903381 per l’uso di anisolo

1.4.2 anisolo e pirrolo
10. - N.B: l’uso di pirrolo e anisolo viene citato anche nei brevetti ELF
ATOCHEM EP 860480 (anisolo) ed EP 860481 (pirrolo)
130:268605
Paint stripper emulsion compositions and removing paint.
Nercissiantz, Ara Z.; Chang, Kai S. (McGean-Rohco Inc., USA). Eur. Pat. Appl.
EP 903381 A2 24 Mar 1999, 18 pp. DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES,
FR, GB, GR, IT, LI, LU, NL, SE, MC, PT, IE, SI, LT, LV, FI, RO. (English).
(European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C09D009-00.
APPLICATION: EP 98-117918 22 Sep 1998. PRIORITY: US 97-935942 23 Sep 1997.
A paint-stripper compn. comprises a mixt. of H2O and ³1 org. solvent selected
from (A-1) alkoxy benzenes or alkoxy naphthalenes or (A-2) ³1 quaternary amine
salt or (A-3) a mixt. of (A-1) and (A-2), optionally benzyl, furfuryl, or
acetyleneic alcs., thickener and pyrrole. Stripping paint from a surface
comprises contacting the paint with a mixt. of e3% H2O and ³1 (A-1) or (A-2) or
(A-3). Thus, an example stripping compn. was obtained by mixing part A contg.
70 parts anisole and 10 parts benzyl alc. with part B of water.
1.4.3 pirrolo
11.
129:204263
Paint-stripping formulations, their preparations and use.
Distaso, John; Deguzman, Azucena G. (Elf Atochem North America, Inc., USA).
The rate of stripping of benzyl alc.-based, alk. water-in-oil emulsions is
improved by incorporating pyrrole in the org. phase.
N.B. vedi anche (McGean-Rohco Inc., USA). EP 903381 per uso di pirrolo
1.5 con dimetilsolfossido e/o N- metilpirrolidone
1.5.1 dimetilsolfossido/ N- metilpirrolidone
12.
129:68937
Paint stripper for removing coatings and lacquers and its use.
Lallier, Jean-Pierre (Elf Atochem S.A., Fr.). Eur. Pat. Appl. EP 846736 A1 10
Jun 1998, 7 pp. DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES, FR, GB, GR, IT,
LI, LU, NL, SE, MC, PT, IE, SI, LT, LV, FI, RO. (French). (European Patent
402918 3 Dec 1997. PRIORITY: FR 96-15042 6 Dec 1996; FR 97-2345 27 Feb 1997.
Coating removers comprise water 5-90, benzyl alc. 2-47.5, and DMSO or N-
methylpyrrolidone 2-47.5%. The compns. do not contain chlorinated or arom.
hydrocarbon solvents. Several examples were given in emulsion
form.
miscele senza alcol benzilico

2 miscele a base di N-metilpirrolidone:
2.1 con abrasivi/ Shellsol A
13.
129:261847
Paint removing composition.
Charnock, Ronald Scott; Deamer, Derrick Frederick; Harris, Antony John (POLYCELL
PRODUCTS LIMITED, UK). Eur. Pat. Appl. EP 867482 A2 30 Sep 1998, 6 pp.
DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE,
MC, PT, IE, SI, LT, LV, FI, RO. (English). (European Patent Organization).
CODEN: EPXXDW. CLASS: ICM: C09D009-00. APPLICATION: EP 98-302298 26 Mar 1998.
PRIORITY: GB 97-6254 26 Mar 1997. DOCUMENT TYPE: Patent CA Section: 42
(Coatings, Inks, and Related Products)
A solvent-action paint, varnish or wood stain removing compn. is provided
comprising one or more solvents and at least 10% of a particulate mineral
material. Suitable particulate mineral materials include silicate-based
powders, Ca carbonate-based powders and Ca-Mg carbonate-based powders. Also
provided is a method for removing a paint, varnish or wood stain film from a
surface of a substrate as a dry powdery residue. Thus, a paint removing compn.
comprised N-methyl-2-pyrrolidone 15.0, Shellsol A 41.10, Methocel 311 (cellulose
deriv.) 0.48, Lutensol TO5 (a surfactant) 1.80, HDK-N 20 (colloidal silica)
1.50, Disperbyk dispersant 0.12, Luviskol K80 (polyvinylpyrrolidone) 2.00 and
Speswhite (kaolin) 38.00 parts.
2.2 con succinati/ glutarati/ adipati (no H2O)
14.
128:103476
Coating removal composition and method of removing the coated membrane.
Murakami, Hideyuki; Shijiki, Shun; Kaneko, Shozo (Murakami, Hideyuki, Japan).
Jpn. Kokai Tokkyo Koho JP 10007954 A2 13 Jan 1998 Heisei, 4 pp. (Japanese).
(Japan). CODEN: JKXXAF. CLASS: ICM: C09D009-00.
APPLICATION: JP 96-178735 20 Jun 1996. DOCUMENT TYPE: Patent CA Section: 42
(Coatings, Inks, and Related Products) Section cross-reference(s): 46
The compn. comprises an aliph. alkyl dicarboxylate and a N-methylpyrrolidone
(I), where a substrate (metal plate), after removing a coated membrane with the
compn., was treated with an aq. soln. contg. an alk. metal hydroxide [Ca(OH)2]
and an alk. metal polyphosphate (Na pyrophosphate). Thus, a compn. was prepd.
from a mixt. of di-Me succinate 15, di-Me glutarate 56, di-Me adipate 18 and I
11%.
2.3 con succinati/ glutarati/ 3-etossiproprionati
15.
126:105555
Composition containing methylpyrrolidone for stripping layers of cured coatings
from substrates.
Lunsford, John (Furniture Medic, Inc., USA). PCT Int. Appl. WO 9640852 A1 19
Dec 1996, 27 pp. DESIGNATED STATES: W: BR, BY, CA; RW: AT, BE, CH, DE, DK, ES,
FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE. (World Intellectual Property
Organization). CODEN: PIXXD2. CLASS: ICM: C11D001-94. ICS: C11D007-14;
C11D007-24; C11D007-32. APPLICATION: WO 96-US9968 7 Jun 1996. PRIORITY: US 95-
473238 7 Jun 1995. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and
Related Products)

The title compn. includes 1-methyl-2-pyrrolidone (NMP) or its equiv. 20-40, ³1
alkylated arom. hydrocarbons (preferably a mixt. of alkyl benzenes and alkyl
naphthalenes) 1-20, ³1 alkoxy propionic acid ester 10-30, preferably ethyl-3-
ethoxypropionate, ³1 dialkyl esters of dibasic acids 20-60, preferably di-Me
esters of adipic and glutaric acids, and a cellulose ether 0.2-2%, for example,
hydroxypropyl Me cellulose. The title NMP compn. is esp. useful for stripping
nitrocellulose lacquer from wood.
2.4 con esteri dibasici/ alchilen carbonati (no H2O) -
“per sverniciatura caschi”
16.
126:61596
Evaluation of propylene carbonate in Air Logistics Center (ALC) depainting
operations.
Burckhalter, Angela; Hooper, Ann Marie; Nazario, Carlos; Springer, Johnny, Jr.;
Stone, Kenneth R. (OC-ALC/EMV, Tinker AFB, OK, USA). Proc., Annu. Meet. - Air
Waste Manage. Assoc., 88th(Vol. 9), 95-RP138.04, 6 pp. (English) 1995 Air &
Waste Management Association CODEN: PAMEE5. ISSN: 1052-6102. DOCUMENT TYPE:
Journal CA Section: 42 (Coatings, Inks, and Related Products) Section cross-
reference(s): 59
A blend contg. propylene carbonate 25, N-methylpyrrolidinone 50, and dibasic
ester 25% (to be used as a replacement for MEK to reduce air pollution in paint
removal from aircraft radomes) showed that the blend performed favorably in
comparison with MEK in removing paint from glass fiber/epoxy test panels. The
tests performed measured paint removal time and efficiency, paint adhesion,
flexural properties, wt. change of the substrate after paint removal, and
hardness of unpainted substrate test panels.
2.5 con KOH/ H2O/ etanolammine
17.
130:238947
Paint stripping composition and procedure for use on coated polymers.
Bouveron, Yves; Dehay, Georges; Fresafond, Jean-Pierre; Lottiau, Michel;
Trombetta, Francis (Appryl S.N.C.; Turco France, Fr.). Eur. Pat. Appl. EP
902063 A1 17 Mar 1999, 7 pp. DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES, FR,
GB, GR, IT, LI, LU, NL, SE, MC, PT, IE, SI, LT, LV, FI, RO. (French). (European
Patent Organization). CODEN: EPXXDW. CLASS: ICM: C09D009-00. APPLICATION: EP
98-116711 3 Sep 1998. PRIORITY: FR 97-11323 11 Sep 1997. DOCUMENT TYPE: Patent
CA Section: 42 (Coatings, Inks, and Related Products)
The compn., which does not contain abrasives, comprises 1-10% water, 1-10% KOH,
15-60% aliph./arom. aminoalc., preferably 2-aminoethanol, and 30-90% lactame,
e.g., C1-2 N-alkylpyrrolidone, preferably N-methylpyrrolidone. Stripping paints
from thermoplastic polymer and copolymer substrates, e.g., propylene, is carried
out by contact of the compn. (30-200 parts per lb) and the substrate (100 parts
per lb) at 30-90°, preferably 50-85°, under mech. stirring. Thus, a mixt. of 2-
aminoethanol, N-methylpyrrolidone, and KOH pellets was stirred to dissolve KOH
with slow addn. of water, heated to 70°, then, polypropylene painted specimens
were placed in the soln. for 20 min., then rinsed with a water jet. The paint
system consisted of a layer of chlorinated polyethylene paint, a layer of TiO2
pigmented white polyurethane paint, and a layer of acrylic varnish; the
stripping efficiency was assessed visually.

3 miscele a base di terpeni:
3.1 con diclorometano (pulizia pennelli - vernici olio)
18.
127:163249
Removers for oil-based paints from painting tools.
Wakamatsu, Hachiro (Ajinomoto Takara Corp., Japan). Jpn. Kokai Tokkyo Koho JP
09194889 A2 29 Jul 1997 Heisei, 3 pp. (Japan). CODEN: JKXXAF. CLASS: ICM:
C11D007-50. ICS: C11D007-24; C11D007-30; C11D017-08. APPLICATION: JP 96-6913
18 Jan 1996. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related
Products)
The title removers mainly contain limonene (I). Thus, immersing of paint
brushes stained with oil-based paints in a soln. contg. 40 vol.% I in 100 mL
CH2Cl2 made the brushes clean without impairing their softness.
3.2 con idrocarburi/ H2O/ abrasivi
19.
128:36018
Preparing a surface for application of a finish using surface abrasion
compositions providing rapid cleaning and dulling of the underlying surface.
Swidler, Ronald; Woodhall, Edward W. (Cal-West Equipment Company Inc., USA).
U.S. US 5690539 A 25 Nov 1997, 8 pp. (English). (United States of America).
CODEN: USXXAM. CLASS: ICM: B24C001-08. ICS: B24C001-00; C09C001-68. NCL:
451038000. APPLICATION: US 95-512055 7 Aug 1995. DOCUMENT TYPE: Patent CA
The title process involves (i) abrading the surface with an abrasive compn. that
is a foam or a gel comprising: (a) about 1.0-80% particulate abrasive; (b) about
0.1-10% suspension agent; (c) a surfactant; and (d) a cleaning agent comprising
an aliph. hydrocarbon; and (ii) removing the abrasive compn. from the surface.
A compn. used with a scuff-pad applicator on acrylic-finished automotive body
panel comprised Minspar 200 or 170 14, EP-1 suspension agent 6.25, Rhodapex CO-
436 1, Neodol 25-7 0.5, Neodol 25-3 0.5, EtOH 1, D-limonene 2, triethanolamine
0.5, and water to 100%.
4 miscele a base di glicoleteri:
4.1 dipropylene glycol di-Me ether/ ethoxylated tridecanol
20.
130:111652
Aqueous paint removing compositions.
Mogridge, Ithiel (UK ). PCT Int. Appl. WO 9901515 A1 14 Jan 1999,29 pp.
DESIGNATED STATES: W: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU,
CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HR, HU, ID, IL, IS, JP, KE, KG, KP,
KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO,
RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW, AM, AZ,
BY, KG, KZ, MD, RU, TJ, TM; RW: AT, BE, BF, BJ, CF, CG, CH, CI, CM, CY, DE, DK,
ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR, NE, NL, PT, SE, SN, TD, TG.
(English). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS:
ICM: C09D009-04. APPLICATION: WO 98-GB1987 6 Jul 1998. PRIORITY: GB 97-14196 5
Jul 1997. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related
Products)
A compn. for use in removing paint from painted surfaces comprises an aq. mixt.
of (A) at least one alkoxy ether solvent, (B) an C1-6 alc., (C) at least one
nitrogen-contg. surfactant compd. selected from (i) compds. having general
formula of R1N(R2)(CH2)wQ wherein R1 = H or R3C:O ; R3 = a straight or branched

C6-22 alkyl or alkenyl; R2 = H, Me, or ethyl; w = 1 or 2; and Q1 = COOM1 or
SO3M1; M1 = an alkali metal cation or an optionally substituted ammonium group;
(ii) compds. having general formula of I wherein R4 = H or (CH2CH2O)zH; R5 = a
straight or branched C6-22 alkyl or alkenyl; m = 0 or 1 and x + y + z = 2-50
(integer) ; (iii) an imidazoline compd. of formula II wherein R = a straight or
branched C7-18 alkyl and x = 2-10; (i.v.) a compd. of formula
RCON(R3)CH2CH2NR1R2 wherein R = a straight or branched C7-18 alkyl; R1 =
CH2CH2OH or (CH2)xCOONa; x = 1 or 2; R2 = (CH2)yCOONa; y = 1 or 2; and R3 = H or
CH2CH2OH; and (v) an alkyl betaine of formula RN+(CH3)2CH2COO- wherein R = a
straight or branched C7-18 alkyl; and (D) a compd. having general formula
RZ(QO)nH wherein R = a straight or branched C6-22 alkyl or alkenyl or an
alkylphenyl; Z = O or NH; Q = (CH2)2, (CH2)3, or a combination thereof; and n =
hydrophilic lipophilic balance of 7.3-15.0. The compn. penetrates and softens
emulsion, vinyl silk, and gloss paints, varnishes, flecked paint, interior
textured paint and oil-based red lead paint such that their residues can be
easily removed from the surface treated. Thus, a compn. comprised water 33.15,
dipropylene glycol di-Me ether 36.35, sodium N-lauroyl sarcosinate 4.6,
triethanolamine 2.3, ethoxylated tridecanol 9.0, Bermocoll PR (thickener) 1.0,
and methanol 13.6%.
4.2 tri- tetra- polyethylene glycol di-Me ether/
dipropylene glycol monomethyl ether
21.
130:169659
Paint and cosmetic removal compositions.
Hopfstock, Herbert (Paintex International Corporation, USA). PCT Int. Appl. WO
9906506 A1 11 Feb 1999, 23 pp. DESIGNATED STATES: W: AL, AM, AT, AU, AZ, BA,
BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HR,
HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, M G, MK,
MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA,
UG, US, US, UZ, VN, YU, ZW, AM, AZ, BY, KG, KZ, MD, RU, TJ, TM; RW: AT, BE, BF,
BJ, CF, CG, CH, CI, CM, CY, DE, DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML,
MR, NE, NL, PT, SE, SN, TD, TG. (English). (World Intellectual Property
Organization). CODEN: PIXXD2. CLASS: ICM: C11D001-72. ICS: C11D001-722;
C11D003-22; C11D003-44. APPLICATION: WO 98-US14081 7 Jul 1998. PRIORITY: US
97-54123 29 Jul 1997; US 97-965327 6 Nov 1997. DOCUMENT TYPE: Patent CA
Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s):
46, 62
An environmentally safe compn. for removing paint and other materials, such as
graffiti, includes a synergistic combination of (a) 2-20 parts anionic and/or
nonionic poly alkoxylated surfactant such as a poly alkoxylated alkyl ether
carboxylic acid, poly alkoxylated alkyl ether carboxylic ester, poly alkoxylated
alkyl ether carboxylate, poly alkoxylated fatty acid, poly alkylene glycol
ester, poly alkoxylated alc. and (b) 10-90 parts poly alkylene glycol alkyl
ether solvent. Preferably, the C content of the repeating unit of the
alkoxylated group in (a) and (b) is the same or differ by £3 C atoms, addnl. the
compn. may contain 5-70 parts org. solvent selected from a polar aprotic solvent
and/or a hydrocarbon solvent, 3-25 parts poly alkylene glycol alkyl acetate,
0.1-5.0 parts hydroxyalkylated cellulose thickener, and 0.1-2.0 parts substance
to adjust pH 5.O-7.5. An example paint remover contained oleyl ether carboxylic
acid 5, triethylene glycol di-Me ether 19, tetraethylene glycol di-Me ether 25,
polyethylene glycol di-Me ether 25, and dipropylene glycol monomethyl ether 10
parts.

4.3 diethylene glycol monopropyl ether/ dipropylene glycol
Me ether/ MIBK/ H2O
22.
130:140627
Aqueous neutral cleaning compositions for paints.
Turunc, Umit; Popowich, Patricia A. (Betzdearborn Inc., USA). U.S. US 5866523 A
2 Feb 1999, 5 pp. (English). (United States of America). CODEN: USXXAM.
CLASS: ICM: C11D003-44. NCL: 510206000. APPLICATION: US 97-970695 14 Nov 1997.
The compns. comprise a mixt. of a ketone, at least one glycol ether, water and
optionally a surfactant. The compns. when applied to substrates coated with
resinous coatings are effective for removing the coating from the substrate.
Thus, a such cleaning compn. was formulated from MIBK 10, diethylene glycol
monopropyl ether 29, dipropylene glycol Me ether 10, deionized water 50, and
Pluronic 25R2 (surfactant) 1%.
4.4 glycol- oligo glycol monoethers/ glycols/ oligo
glycols/ alkanolamines
23.
126:158863
Stripping compositions with mixtures of organic solvents.
Murphy, Donald P. (Henkel Corporation, USA). U.S. US 5591702 A 7 Jan 1997, 13
pp. (United States of America). CODEN: USXXAM. CLASS: ICM: C11D003-26. ICS:
C11D003-20. NCL: 510202000. APPLICATION: US 95-450593 25 May 1995. DOCUMENT
TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section
cross-reference(s): 46
Solvent-assisted alk. paint stripping can be speeded up by using mixts. of (i)
glycol and/or oligo glycol monoethers with (ii) unetherified glycols and oligo
glycols and/or alkanolamines. Optional additives are gluconic acid,
surfactants, and alk. salts other than hydroxides.
4.5 con terpeni/ Et acetato/ idrocarburi (no H2O)
24.
128:231716
Paint and stain remover in an abrasive applicator for hard surfaces.
Rose, Edward S.; Wile, Raymond G. (Dymon, Inc., USA). PCT Int. Appl. WO 9812959
A1 2 Apr 1998, 17 pp. DESIGNATED STATES: W: AL, AM, AT, AU, AZ, BA, BB, BG,
BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, HU, ID, IL, IS, JP,
KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ,
PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW,
AM, AZ, BY, KG, KZ, MD, RU, TJ, TM; RW: AT, BE, BF, BJ, CF, CG, CH, CI, CM, DE,
DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR, NE, NL, PT, SE, SN, TD, TG.
(English). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS:
ICM: A47L013-17. ICS: C11D017-04; C09D009-00. APPLICATION: WO 97-US16775 22
Sep 1997. PRIORITY: US 96-718826 24 Sep 1996. DOCUMENT TYPE: Patent CA
A paint and stain remover article comprises (a) substrate, e.g. towel, capable
of absorbing and retaining a fluid. where ³1 surface is abrasive, and (b)
nonabrasive liq. formulation for removing paint, stains and other marks absorbed
in the substrate, the liq. formulation comprises aliph. solvent, a terpene, a
glycol ether or dibasic ester, and a ketone or acetate. Many towels are
provided in a continuous rolled cylinder which is in a selectively sealable,
essentially airtight container with a lid opening which allows the user to
remove individual towels which contain the appropriate amt. of liq. remover. An
abrasive surface textured towel may contain a mixt. of mineral spirits 19.50, d-

limonene 10.00, propylene glycol monomethyl ether 20.00, ethylene glycol
monobutyl ether 30.00, Et acetate 20.00, and fragrance 0.50%.
5 miscele a base di acidi organici:
5.1 ac. formico/ diclorometano/ xilene/ H2O
25.
128:271744
Corrosion-free paint-removing solvents.
Wang, Mingjie (Wang, Mingjie, Peop. Rep. China). Faming Zhuanli Shenqing
Gongkai Shuomingshu CN 1139132 A 1 Jan 1997, 5 pp. (Chinese). (People's
Republic of China). CODEN: CNXXEV. CLASS: ICM: C09D009-00. APPLICATION: CN
95-111816 22 Jun 1995. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, In ks,
and Related Products)
The solvents which can be widely used in household appliance, automobile, etc.,
consist of methylene chloride 48-50, formic acid 14-15, xylene 8.9-10.9, Et
caprylate 0.1-0.2, and water 22-24 parts.
5.2 ac. glicolico/ propossi butanolo/ H2O
26.
129:68938
Compositions and methods for removing titanium dioxide from surfaces.
Dobrez, Daniel J.; Lalinsky, Mark R.; Rybarski, Robert J. (Dober Chemical Corp.,
USA). U.S. US 5763377 A 9 Jun 1998, 7 pp. (English). (United States of
America). CODEN: USXXAM. CLASS: ICM: C09D009-00. ICS: C09D009-02; C09D009-04;
C11D009-00. NCL: 510201000. APPLICATION: US 96-665280 17 Jun 1996. DOCUMENT
TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products)
The methods are carried out by contacting a titanium dioxide-contg. material
located on the surface with a compn. comprising ³20% by wt. of water, an acid
component in an amt. effective to reduce the adhesion between the titanium
dioxide-contg. material and the surface; and an org. component in an amt.
effective to disperse the titanium dioxide-contg. material in the compn. Thus,
a compn. was prepd. from a mixt. of soft tap water 32, hydroxyacetic acid 47,
propoxy butanol 9.5, CS 460 (Na lauryl sulfate) 1, Surfonic N 95 4, Polytergent
SLF 18 6 and Maphos 8135 0.5%.
5.3 ac. benzoico/ benzaldeide/ solv. arom. (con o senza
H2O)
27.
129:68935
Paint stripper for removing coatings and lacquers.
Lallier, Jean-Pierre; Marie, Patrick; Aubry, Jean-Marie; Marti, Marie-Jose; Del
Nero, Valerie (Elf Atochem S.A., Fr.). Eur. Pat. Appl. EP 846734 A1 10 Jun
1998, 9 pp. DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI,
LU, NL, SE, MC, PT, IE, SI, LT, LV, FI, RO. (French). (European Patent
402916 3 Dec 1997. PRIORITY: FR 96-15040 6 Dec 1996. DOCUMENT TYPE: Patent CA
Coating removers comprise 1-100 parts arom. solvent based on benzaldehyde,
toluene, xylene, and/or anisole and 0-99 parts water; the benzaldehyde may be a
tech. product contg. benzoic acid. The benzoic acid acts as an activator and
does not cause corrosion problems. Several examples were given with water
content ³50%.

6 miscele a base di dimetilsolfossido:
6.1 con eteri/ ammine/ acido poliacrilico
28.
127:6204
Thick paint stripping composition.
Lallier, Jean-pierre (Elf Atochem S.A.; Lallier, Jean-Pierre, Fr.). PCT Int.
Appl. WO 9714757 A1 24 Apr 1997, 14 pp. DESIGNATED STATES: W: AU, BR, CA, CN,
IL, JP, KR, MX, NO, NZ, RU, US; RW: AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE,
IT, LU, MC, NL, PT, SE. (World Intellectual Property Organization). CODEN:
PIXXD2. CLASS: ICM: C09D009-00. APPLICATION: WO 96-FR1600 14 Oct 1996.
PRIORITY: FR 95-12214 18 Oct 1995. DOCUMENT TYPE: Patent CA Section: 42
A general-purpose, halogen-free paint stripper includes an aprotic polarsolvent
such as DMSO, a non-protic water-sol. ether, a water-sol. acrylic acid polymer
thickener, and an aliph. amine having 6-20 carbon atoms.
6.2 con alchilglicoli/ alchildiglicoli
29.
126:61675
Dimethylsulfoxide paint stripper composition.
Barney, Paul G.; Hexted, Bryan; Haller, Werner; Schottmer, Bernard (Henkel
Kommanditgesellschaft Auf Aktien; Henkel Limited, Germany). Brit. UK Pat.
Appl. GB 2299812 A1 16 Oct 1996, 8 pp. (United Kingdom). CODEN: BAXXDU. CLASS:
ICM: C09D009-00. APPLICATION: GB 95-7909 13 Apr 1995. DOCUMENT TYPE: Patent CA
Chlorine-free coating removers contain 20-90% dimethylsulfoxide (DMSO), 10-80%
of an alkyl glycol ether or an alkyl diglycol ether contg. C2-8 in the alkyl
group and one hydroxyl group, and, optionally, a thixotropic agent, a thickener,
a surfactant, an evapn. retarder, a dye, a corrosion inhibitor and an activating
acid or base. Thus, DMSO 75, Bu diglycol ether 23.5 and cellulose thickener
1.5% were mixed at room temp. and applied to approx. 10 yr-old alkyd resin
paints showing stripping ratio 38.
7 miscele a base di alchilcarbonati:
7.1 con propilenglicol/ polipropilenglicol (no H2O) -
rimoz. graffiti senza tensioattivi
30.
127:36088
Surfactant-free paint remover composition.
Plishka, Martin J. (Brown, William L., USA). U.S. US 5629277 A 13 May 1997, 4
pp. (United States of America). CODEN: USXXAM. CLASS: ICM: C11D003-10. ICS:
C11D003-43. NCL: 510202000. APPLICATION: US 95-539171 4 Oct 1995. DOCUMENT
TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products)
A surfactant-free compn. for removing paint, particularly graffiti, consisting
essentially of: 15-90 vol.% of an alkylene carbonate selected from propylene
carbonate, butylene carbonate and mixts. thereof; 3-50 vol.% of propylene
glycol; and 2-30 vol.% of a polypropylene glycol having a mol. wt. ³200 wherein
the total amt. of alkylene carbonate, propylene glycol, and polypropylene glycol

in the compn. is essentially 100% by vol. The compn. optionally contains a
hydroxyalkylcellulose thickener.
8 miscela a base di triletilfosfato
8.1 con adipati/ citrati/ triacetina
31.
127:150286
Nontoxic aqueous composition for plasticizing paint prior to stripping.
Reynolds, Paul A. (Eco Solutions Limited; Reynolds, Paul A., UK). PCT Int.
Appl. WO 9724409 A1 10 Jul 1997, 36 p. DESIGNATED STATES: SG, W SI, W SK, W SK,
W TJ, W TM, W TR, W TT, W UA, W UG, W US, W UZ, W VN, W AM, W AZ, W BY, W KG, W
KZ, W MD, W RU, W TJ, W TMJP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV,
MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SK, TJ, TM,
TR, TT, UA, UG, US, UZ, VN, AM, AZ, BY, KG, KZ, MD, RU, TJ, TM; RW: AT, BE, BF,
BJ, CF, CG, CH, CI, CM, DE, DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR,
NE, NL, PT, SE, SN, TD, TG. (World Intellectual Property Organization). CODE N:
PIXXD2. CLASS: ICM: C09D009-04. APPLICATION: WO 96-GB3219 23 Dec 1996.
PRIORITY: GB 95-26584 28 Dec 1995; GB 96-8944 29 Apr 1996; GB 96-16154 1 Aug
1996. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related
Products)
A title compn. includes preferably a combination of active agents, e.g.,
(EtO)3PO4 and a co-agent selected from di-Me adipate, 1,2,3-propanetriol
triacetate, tri-Bu citrate, n-octyl acetate, Me octanoate and 2-ethyl-1-butanol,
as an emulsified hydrophobic phase in which the active agents are partitioned
between the hydrophobic and aq. phase. The emulsion is preferably stabilized
using a nonionic, H2O-sol. block copolymer surfactant, specifically a copolymer
of ³1 alkylene oxide. The compn. may be thickened using a rheol. co ntrol agent,
esp. synthetic smectic clays, e.g., Laponite RD.
9 solventi tradizionali
9.1 bassa volatilità
32.
127:308465
Low vapor pressure solvent.
Locklin, John M.; Hatcher, Paul A.; Danforth, Mervin A. (McDonnell Douglas
Corp., USA). U.S. US 5676764 A 14 Oct 1997, 4 pp. Cont. of U.S. Ser. No.
17,307, abandoned. (United States of America). CODEN: USXXAM. CLASS: ICM:
B08B003-08. ICS: C23G005-02. NCL: 134038000. APPLICATION: US 96-610591 7 Mar
1996. PRIORITY: US 93-17307 12 Feb 1993. DOCUMENT TYPE: Patent CA Section: 42
An advantageous effective cleaning solvent consists essentially of Me Et ketone
35-41, Me iso-Bu ketone 20-25, iso-Pr alc. 5-20, toluene 5-20, Bu acetate 5-20,
and water (to reduce the vapor pressure) 4-6%. The composite vapor pressure of
the solvent, at 20°, neglecting the vapor pressure contribution of water, is £
35 mm Hg. . The invention solvent is particularly effective as a not -yet-dry
paint cleaner, e.g. for cleaning paint guns or removing fresh overspray without
affecting hardened underlayers.
9.2 per cere e grassi (spray)
33.

128:206195
Multifunctional spray cleansers and its preparation.
Wang, Qiran (Wang, Qiran, Peop. Rep. China). Faming Zhuanli Shenqing Gongkai
Shuomingshu CN 1143108 A 19 Feb 1997, 6 pp. (Chinese). (People's Republic of
China). CODEN: CNXXEV. CLASS: ICM: C11D007-60. APPLICATION: CN 94-119659 16
Dec 1994. DOCUMENT TYPE: Patent CA Section: 46 (Surface Active Agents and
Detergents)
The cleansers useful for removing soilings such as pitch, paint and paraffin wax
comprise trichlorethylene 40-60, trichloromethane 8-12, carbon tetrachloride 3-
7, acetone 3-5, ethanol 3-7, triethanolamine 0.6-1, 4-chloro-2,6-dimethylphenol
0.3-0.5, camphor 0.3-0.7, clove* oil 0.2-0.4, and CO2 12-16 parts as propellant.
(*chiodi di garofano?)
9.3 benzotrifluoruro/ glicoleteri/ alcoli/ H2O
(monofasico)
34.
128:272071
Single phase liquid composition for cleaning and paint stripping.
Rowe, Edward A.; Chen, Hang-Chang Bobby; Lindrose, Mark E. (Occidental Chemical
Corporation, USA). U.S. US 5744437 A 28 Apr 1998, 15 pp. Cont.-in-part of U.S.
Ser. No. 339,519, abandoned. (English). (United States of America). CODEN:
USXXAM. CLASS: ICM: C11D003-20. ICS: C11D003-24; C11D001-22; B08B003-08. NCL:
510204000. APPLICATION: US 96-753464 25 Nov 1996. PRIORITY: US 94-339519 14
Nov 1994. DOCUMENT TYPE: Patent CA Section: 46 (Surface Active Agents and
Detergents) Section cross-reference(s): 42
A single phase liq. compn. comprises 2-30% benzotrifluoride solvent, ~4-50%
glycol ether cosolvent, ~2-40% alkanol, 0-5% surfactant, and the remainder H2O.
Thus, an example linoleum floor cleaner contained 16% p-chlorobenzotrifluoride,
20% isopropanol, 36% ethylene glycol monobutyl ether, and 28% water.
10 sistemi barriera/protez. temporanea
10.1 alcol polivinilico/ ossidi di polialchilene
35.
129:5690
Temporary protective coating and use in motor vehicle painting.
Woodhall, Edward W.; Kondrats, Nicholas (USA ). U.S. US 5750190 A 12 May 1998,8
pp. Cont.-in-part of U.S. 5,411,760. (English). (United States of America).
CODEN: USXXAM. CLASS: ICM: B65B033-00. ICS: C08K005-54. NCL: 427156000.
APPLICATION: US 95-432024 1 May 1995. PRIORITY: US 90-614330 16 Nov 1990; US
91-788006 5 Nov 1991; US 92-972037 5 Nov 1992; US 93-16872 11 Feb 1993; US 94-
209796 10 Mar 1994. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and
Related Products)
Motor vehicle surface are temporarily protected from paint by (a) applying a
masking material to the surface portions of the motor vehicle to produce a
substantially continuous film of a masking material, the masking material
comprising (i) 5-25% polyvinyl alc.; (ii) £20% EtOH (based on 190 proof alc.);
(iii) a surfactant; (i.v.) <4% of a blocking agent selected from the group
consisting of polyethylene oxide, polypropylene oxide, polyethylene
oxide/polypropylene oxide copolymer, polyethylene glycol, and lecithin; and (v)
water; (b) painting the surface of the motor vehicle, wherein the masking
material is effective to prevent contact of the paint with the surface portions
of the motor vehicle to be protected; and (c) removing the masking material from
the surface portions of the motor vehicle to be protected by peeling or with a

water wash, whereby paint applied to the protected portions of the surface of
the motor vehicle is removed together with the masking material.
10.2 con nylon solubile (in EtOH)
36.
126:145421
Alcohol-soluble strippable film-forming agent.
Zou, Yuzheng (Zou, Yuzheng, Peop. Rep. China). Faming Zhuanli Shenqing Gongkai
Shuomingshu CN 1097199 A 11 Jan 1995, 6 pp. (People's Republic of China).
CODEN: CNXXEV. CLASS: ICM: C09D005-20. APPLICATION: CN 93-111340 6 Jul 1993.
An alc.-sol. strippable fast-drying coating compn. with good resistances to oil,
water, weather, and heat comprises 5-25 % alc.-sol. nylons, alc. solvent 74-
94.9%, dodecanol or polyether-modified siloxane paint stripping agent 0.08-
0.12%.
10.3 con acido gallico (superficie “strippabile”)
37.
128:258498
Multilayer coatings with a strippable topcoat and aqueous intermediate layer.
Fowler, Michael (Courtaulds Aerospace Inc.; Fowler, Michael, USA). PCT Int.
Appl. WO 9813148 A1 2 Apr 1998, 25 pp. DESIGNATED STATES: W: AL, AM, AT, AU,
AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, HU,
ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN,
MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG,
US, UZ, VN, YU, ZW, AM, AZ, BY, KG, KZ, MD, RU, TJ, TM; RW: AT, BE, BF, BJ, CF,
CG, CH, CI, CM, DE, DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR, NE, NL,
PT, SE, SN, TD, TG. (English). (World Intellectual Property Organiz ation).
CODEN: PIXXD2. CLASS: ICM: B05D005-00. ICS: B05D007-00. APPLICATION: WO 97-
GB2596 24 Sep 1997. PRIORITY: GB 96-20246 26 Sep 1996. DOCUMENT TYPE: Patent
CA Section: 42 (Coatings, Inks, and Related Products)
A nonvolatile polar intermediate layer material is applied from aq. liq. vehicle
to a primed substrate before coating with a curable topcoat. The polar material
facilitates the removal of the topcoat from the primer by a stripping solvent,
as is required for example when repainting aircraft. The polar material has
sufficiently high affinity for the primer surface that it is not washed off the
primer surface by rinsing or by application of the topcoat paint. Epoxy
primered Al panels were sprayed with a 0.9 g/L aq. soln. contg. gallic acid,
dried, topcoated with polyurethane, and cured to give coatings having
strippability in various stripping solvents.0
10.4 senza solventi
38.
126:20151
Barriercoat process paint stripping: Mask washing without solvents.
Crosley, David (Challenge Inc., Indianapolis, USA). Met. Finish., 94(10), 33-36
(English) 1996 Elsevier. CODEN: MEFIA7. ISSN: 0026-0576. DOCUMENT TYPE:
Journal CA Section: 42 (Coatings, Inks, and Related Products)
Solventless barriercoat process for removal of coatings applied to substrates
was discussed including barriercoat chem., machinery, and application and
essential elements of barriercoat process.

11 flocculanti per cabine
11.1 con AlCl3/ polietilendiammine
39. flocculanti per cabine
127:252596
Process for removing waterborne and oil base paints from water.
Agree, Howard B. (Betz Laboratories, Inc., USA). Can. Pat. Appl. CA 2174169 AA
7 Jun 1997, 25 pp. (Canada). CODEN: CPXXEB. CLASS: ICM: C02F001-52.
APPLICATION: CA 96-2174169 15 Apr 1996. PRIORITY: US 95-568066 6 Dec 1995.
DOCUMENT TYPE: Patent CA Section: 60 (Waste Treatment and Disposal) Section
A process for detackifying oil base paint and for coagulating and flocculating
waterborne paint in water is described. In the processes a dimethylamine-
ethylenediamine-epichlorohydrin copolymer, aluminum chlorohydrate and an alk.
material are added to wastewater to detackify oil base paint and to coagulate
and flocculate waterborne paint. The conditioned paint solids can then be
removed from the water. The process is particularly useful for removing paint
from paint spray booth water.
12 rassegne importanti
12.1 “pitture e vernici”: rassegna generale
126:226549
Mechanism of action of stripping agents for coatings.
del Nero, Valerie; Marti, Marie-Josee; Aubry, Jean-Marie; Dupuy, Nathalie;
Huvenne, Jean Pierre (Fr.). Pitture Vernici Eur., 72(11), 7-17
(Italian/Spanish) 1996 G.B.P. Communications CODEN: PVEUEO. DOCUMENT TYPE:
Journal CA Section: 42 (Coatings, Inks, and Related Products)
Alternative methods and agents for cleaning and stripping paints from substrates
are outlined, which have been developed in response to environmental and
occupational hazards of dichloromethane. The method is illustrated with
examples of stripping of white paints, i.e., a solvent-based glycerol-phthalate
formulation and a waterborne acrylic latex. The solvents which are considered
as replacement of dichloromethane are DMF, DMSO, 1,3-dioxolane, and N-
methylpyrrolidone; these and other solvents were evaluated in terms of stripping
efficiency of neat solvent or mixts. and as a function of the swelling rate of
paint film. A synergistic effect was obsd. in DMSO-co-solvent mixts., e.g.,
anisole, carbon tetrachloride, ethylbenzene, and xylol. Each type of paint
formulation presents specific requirements for the solvent system to be used in
stripping.
12.2 alternative al diclorometano: applicabilità
dell’alcol benzilico
129:234743
Aircraft solvent depainting alternatives feasibility demonstration Oklahoma City
Air Logistics Center, Tinker AFB, Oklahoma.
Baker, Gary E.; Sylvia, Dennis; Stearns, Robin; Springer, Johnny (Pacific
Environmental Services, Inc., Mason, OH, USA). Proc., Annu. Meet. - Air Waste

Manage. Assoc., 89th, ra11505/1-ra11505/7 (English) 1996 Air & Waste Management
Association. CODEN: PAMEE5. ISSN: 1052-6102. DOCUMENT TYPE: Journal;
(computer optical disk) CA Section: 59 (Air Pollution and Industrial Hygiene)
Section cross-reference(s): 42
The Oklahoma City Air Logistics Center at Tinker AFB, an Air Force Materiel
Command installation, has worked with the USEPA National Risk Management Lab. to
develop and demonstrate several pollution prevention alternatives involving
painting and de-painting technologies and techniques. Since 1988, the AF and
USEPA collaborated on several pollution prevention studies under the Waste Redn.
Evaluation at Federal Sites Program. This inter-agency feasibility study
validates, prototypes, and demonstrates, on a full-scale basis, the use of an
environmentally preferable aircraft de-painting system. Previously, methylene
chloride paint strippers were used in de-painting operations; however, national
emission stds. for hazardous air pollutants will eliminate their use at sources
subject to max. achievable control technol. Benzyl alc. de-painting systems
proved successful alternatives to methylene chloride chem. paint stripping, but
the use of benzyl strippers is limited to polysulfide-primed surfaces. The no.
of polysulfide-primed surfaces is diminishing as aircraft are stripped, and
other coatings (Koroflex, epoxy, self-priming topcoat) are applied. This study
evaluated the feasibility of de-painting an entire aircraft using an alternative
solvent blend with enhanced H bonding characteristics. Enhanced H bonding
characteristics break the bond between topcoats and primers and substrates.
This technol. has wide applicability, and when successfully implemented, will
help federal facilities meet requirements of Executive Order 12856 and the
Pollution Prevention Act of 1990.
12.3 confronto tra sostituti del diclorometano
129:55765
Testing of solvents for removal of urethanes/epoxies.
Thompson, Lisa M. (Lockheed Martin Energy Systems, Inc., Oak Ridge, TN 37831-
8095, USA). NASA Conf. Publ., 3349(Second Aerospace Environmental Technology
Conference, 1996), 591-597 (English) 1997 National Aeronautics and Space
Administration. CODEN: NACPDX. ISSN: 0191-7811. DOCUMENT TYPE: Journal CA
Section: 46 (Surface Active Agents and Detergents)
For many years, CH2Cl2 has been the solvent of choice for softening or
dissolving polyurethane and epoxy bonds and/or coatings. However, CH2Cl2 has
been implicated as a suspect carcinogen and is now regulated under the Resource
Conservation and Recovery Act, as a hazardous air pollutant under the Clean Air
Act, and is in the rule-making process by the Occupational Safety and Health
Administration to have the permissible exposure limit lowered from 500 to 25 ppm
for an 8 h time weighted av. Because of these concerns, many people have begun
investigating alternatives for CH2Cl2 in this application. For paint removal,
many people have turned to dry methods or various types of stripping using
carbon dioxide pellets, baking soda, corn husks, etc. However, in some
applications due to geometry constraints these methods cannot be used.
Personnel at the Oak Ridge Y-12 Plant have been investigating many solvents or
solvent blends as substitutes for CH2Cl2. Several different pure solvents of
various chem. types were tested along with blends formulated using Hansen Soly.
Parameter Theory which states that solvents with similar parameters will have
similar dissoln. properties. Initially, the solvents were screened by
conducting wt. gain tests on pieces of cured urethane and/or epoxies. Solvents
or solvent blends which appeared promising were tested more throughly. Four
solvent blends were tested on thin bond-lines of polyurethane with some success.
Solvents were also tested on panels coated with both urethanes and epoxies.

13 rassegne meno importanti
13.1
*8
127:206993
Paint stripping - without methylene chloride.
Groshart, Earl (Sumner, WA, USA). Met. Finish., 95(8), 55-57 (English) 1997
Elsevier CODEN: MEFIA7. ISSN: 0026-0576. DOCUMENT TYPE: Journal CA Section:
Methods for removing paint without using CH2Cl2 are presented.
13.2
^7
126:105455
Paint stripping composition.
Hawaldar, Vikas (University Department of Chemical Technology, Bombay 400 019,
India). Paintindia, 45(7), 43-45 (English) 1995 Colour Publications CODEN:
PANTAH. ISSN: 0556-4409. DOCUMENT TYPE: Journal; General Review CA Section: 42
A review with 5 refs. Compns. and applications of various paint removers were
discussed including halogenated hydrocarbon, nonhalogenated solvents, alkali-
based paint strippers, and acid-based paint strippers.
13.3
..
^10
127:206993
Paint stripping - without methylene chloride.
Groshart, Earl (Sumner, WA, USA). Met. Finish., 95(8), 55-57 (English) 1997
Elsevier CODEN: MEFIA7. ISSN: 0026-0576. DOCUMENT TYPE: Journal CA Section:
Methods for removing paint without using CH2Cl2 are presented.
13.4
..
^12
127:54892
Alternative processes to methylene chloride.
Pauli, Robert (Pauli Systems, Fairfield, CA, USA). Prod. Finish. (Cincinnati),
61(9), 84-88 (English) 1997 Gardner Publications, Inc. CODEN: PRFCAB. ISSN:
0032-9940. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial
Hygiene) Section cross-reference(s): 42
Solvent-less stripping of paint from aircrafts as a means of worker exposure and
pollution prevention is discussed.
Keywords
aircraft paint stripping solvent less

13.5
^^6
129:68850
Chemical paint stripping of coated aluminum and steel.
Antony, Wolf (Wilfried Antony G.m.b.H., Tamm D-71732, Germany). Galvanotechnik,
89(6), 1952-1955 (German) 1998 Eugen G. Leuze Verlag. CODEN: GVTKAY. ISSN:
0016-4232. DOCUMENT TYPE: Journal; General Review CA Section: 42 (Coatings,
Inks, and Related Products) Section cross-reference(s): 56
A review without refs. including common paint strippers for steel and Al, air
pollution during stripping process, and treatment of the sludge.
13.6 rimozione fotochimica con radicali liberi (studio)
^^3
129:320479
Free-radical assisted photochemical stripping of paint.
Basak, S.; Rajeshwar, K.; Agarwala, V. S. (2205 West Division, Green Oaks
Research Laboratories, Inc., Arlington, TX 76012, USA). Proc. - Electrochem.
Soc., 98-5(Environmental Issues in the Electronics/Semiconductor Industries and
Electrochemical/Photochemical Methods for Pollution Abatement), 232-235
(English) 1998 Electrochemical Society. CODEN: PESODO. ISSN: 0161-6374.
DOCUMENT TYPE: Journal CA Section: 60 (Waste Treatment and Disposal) Section
An environmentally-friendly method for stripping paint was developed using free-
radicals generated by UV photolysis of H2O2 soln. Proof-of-concept tests show
this method to be equally facile for stripping paint from coated Al, stainless -
steel, and composite substrate surfaces. The stripped paint layer is obtained
in a form that facilitates compaction, transport, and disposal. This contrasts
with org. solvent-based and PMB paint removal methods that generate large
quantities of hazardous waste and airborne particulates resp.
13.7 rimozione elettrochimica (processo commerciale)
^^11
128:193741
Electrochemically induced paint removal an environmentally friendly approach to
remove lead-containing coatings from steel.
Keller, Rudolf; Hydock, Daniel M. (EMEC Consultants, Export, PA 15632, USA).
Proc. - Electrochem. Soc., 97-28(Energy and Electrochemical Processing for a
Cleaner Environment), 475-480 (English) 1998 Electrochemical Society. CODEN:
PESODO. ISSN: 0161-6374. DOCUMENT TYPE: Journal CA Section: 42 (Coatings,
Inks, and Related Products) Section cross-reference(s): 59, 60, 72
To remove the coating from painted steel, a cathodic current is applied to the
metal, resulting in debonding of the paint. It appears that the current
produces localized alk. conditions affecting the bond between paint and metal.
The approach is being developed into a com. paint removal method, the
ElectroStrip process. Pads holding the electrolyte and to which a counter
electrode is attached are held to the surfaces of steel structures by means of
magnets. After cathodic treatment, the paint can be collected and submitted to
a secondary lead smelter for recycling. No toxic material has to be landfilled
and no paint debris is emitted into the air.

13.8
..
^^13
129:291158
Chemical paint removal with mechanical support.
Werner, Thomas (Foster Chemicals G.m.b.H., Juechen, Germany). JOT, J.
Oberflaechentech., 38(5), 52,54-55 (German) 1998 Friedrich Vieweg & Sohn
Verlagsgesellschaft mbH. CODEN: JJOBE3. ISSN: 0940-8789. DOCUMENT TYPE:
Journal; General Review CA Section: 42 (Coatings, Inks, and Related Products)
A brief review with no refs. discussing paint removal systems such as in -line
immersion paint stripping or spray washing machines as well as high-temp.
removal.
14 varie
14.1
**21
129:344555
Exfoliation of coated membranes from molded plastics.
Kinbara, Noriko (Suzuki Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 10286517
A2 27 Oct 1998 Heisei, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM:
B05D003-10. ICS: B29B017-02; B29K023-00; B29K105-26. APPLICATION: JP 97-101183
18 Apr 1997. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related
Products)
The method is carried out by showing a removing agent from a app. on a recycled
plastic, washing in water to remove solvent and coated paint and blowing air to
remove water. An illustration of the showing app. is given.
14.2
***3
130:96892
New aqueous rust-removing and anti-rusting paint.
Deng, Jiancheng; Zhong, Chaofan; Shen, Minghui; Liu, Yingwu (Department of
Applied Chemistry, Xiangtan University, Xiangtan 411105, Peop. Rep. China).
Cailiao Baohu, 31(3), 16-17 (Chinese) 1998 Cailiao Baohu Zazhishe. CODEN:
CAIBE3. ISSN: 1001-1560. DOCUMENT TYPE: Journal CA Section: 42 (Coatings,
Inks, and Related Products)
An aq. rust-removing and anti-rusting paint was prepd. with acrylic acid-
polyvinyl acetate copolymer emulsion as the binder, H3PO4 and composite
inhibitor as the rust inverting agent, Zn3(PO4)2, K2Cr2O7, and (NH4)2MoO4 as the
passivating agent, and iron oxide red, ZnO, and French white as the filler. The
effects of (NH4)2S2O8, reaction temp., and the dosage of acrylic acid and H3PO4
on the performances of the paint or its gelatin were discussed.

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