2. CARBODOLL Srl
SOLVENT STORAGE
FACILITIES TOLL
UCT SpA MANUFACTURE OF
AIR PROTECH Srl
SOLVENT MIXTURES
PARTNERSHIP WITH 3
EFFLUENT GAS
OTHER CHEMICAL
TREATMENT/RECOVERY
DISTRIBUTORS
Chemicals
Plants
DOLLMAR
BONAZZI Srl
CHEMICAL STORAGE MECCANICA Srl
LOCAL DISTRIBUTION DOLLMAR S.p.A. CLEANING AND COATING
EQUIPMENTS
C.I.A.T. SpA ITALTECH SpA
CHEMICAL STORAGE
CLEANING EQUIPMENTS
LOCAL DISTRIBUTION
C.P.R. Srl
RAW MATERIALS FOR OXIPOL Srl
POLYURETHANE EPOXY RESINS
SYSTEMS POLYSYSTEM Srl
P.U. SYSTEMS
Resins-polymers
3. • To slow the corrosion process and to improve the paint
adhesion
• To eliminate the suface conversion based on iron phosphates
• To improve the chemical corrosion strenght
• To optimize the interaction between the surface conversion
and the paints or cathaphoretic coating avoiding any problem
of processes incompatibility.
4.
5. Products
DOLLCOAT
SA
nanotechnologies Method
Plants
ACET
SOFT RAIN High accurancy, fast
Modules and qualtitative
quality tests
HIGH &
CONSTANT
REAL
QUALITY
6.
7. Organo – Functionalized Organic – Inorganic
Silanes Hybrids
R2
R2 = epoxy, aminic, acrylic etc. groups
OR1 R1= alcoxy group
Si
R1O OR1
9. Organo-functionalized silanes Metal oxide
+
“crosslink” molecules
• Space = barrier
• Alkoxy-silanes functionalities= Adhesion
10. • DOLLCOAT SA 115: multimetal nanotechnologic
passivation
• DOLLCOAT SA 119: Chrome free HDG passivation
• DOLLCOAT SA 121: Chrome free and QUALICOAT
approved conversion for aluminium profiles or coil
• DOLLCOAT SA 113: special product with “anti-
finger/easy to clean” properties
• Nanosized particles coupled with resins (used in
different liquid and powder primers)
11. Pretreatment
Standard process
140 °C
150 °C
Phospho-degreasing Tap water Demi water Drying
New process
140 °C
150 °C
Phospho-degreasing
Or Tap water Demi water DOLLCOAT SA115 Drying
Alkaline degreaser Soft Rain
12. • SOFT RAIN is a nebulization module developped by
EUROPLAST
• DOLLMAR is the exclusive representative for
EUROPLAST
• European patent was deposed 4 years ago and
international patent is pending
15. Nebulization noozles
These special noozles assure an optimal application for DOLLCOAT
SA 115 using only 5 l/hr of a solution of only 0,7-1% in demi water
16.
17. Potenziodinamic curves
Potenziodinamic curves arte often used to
investigate material characteristics.
Salt spray fog tests are only a qualitative
characterization and are influenced by many
variables.
Potenziodinamic curves provide
quantitative data very usefull in order to
investigate the pretreatment characteristics.
Potenziodinamic curves are really replicable
and could provide data usefull to compare
different pretreatments in a very fast test
(few hrs).
19. ACET method
• ACET technique allows to predict anticorrosive
behaviour in 24h.
• ACET technique provides quantitative results
for mathematical correlations with NSS and
ASS.
• Equivalent circuit modelization allows to know
quantitatively coating and interface properties.
23. DOLLCOAT SA 115
In the last 5 years this process was adopted by many customers
as final passivation for iron, aluminium and HDG.
24. Old process: after 175 hrs this iron New process: after 800 hrs this iron
panel showes a paint detachment passivated panel is still in excellent
conditions
30. Influence of alkaline degreasers
Nanotechnologic passivation on a Changing the composition of
perfectly degreased surface the alkaline degreaser, the
nanotechnologic passivation
shows a different aspect and a
worse paint adhesion.
33. DOLLCOAT SA SA 119
• Product based on non-fluorinated oligomers
• DOLLCOAT SA 119 does not contains any metal, resin, salt or
acid.
• DOLLCOAT SA 119 does not shows any symbol or hazard
phrase on the labelling.
• pH of the concentrated product and work solution is almost 7
• Water vapor is the only process effluent
• No effluent to dispose
• DOLLCOAT SA 119 is used on hot surfaces (up to 450 °C)
34. DOLLCOAT SA 119
• Typical coating thickness < 0,1µm (100nm)
• Passivated surfaces are colorless and could be immediatly
painted without any further pretreatment
• Paint adhesion is excellent
• Passivated HDG not painted and stocked in exteriors does not
shows any surface oxidation for at least 2-3 months.
• DOLLCOAT SA 119 is allways compatible with any other
potential pretreatment applied after a long external exposition
41. DOLLCOAT SA 121
Chrome free QUALICOAT pretreatment
• DOLLCOAT SA 121 was originally
formulated for aluminium coil conversion
• DOLLCOAT SA 121 is an approved
QUALICOAT pretreatment
• DOLLCOAT SA 121 contains synthesis
oligomers in order to improve paint
adhesion and chemical corrosion resistence.
• Paint adhesion is a critical problem in
aluminium coil specially for the post
forming phase. Sometimes this problem
could occours also on twisted profiles
• DOLLCOAT SA 121 could be used also on
die cast aluminium with good results.
45. DOLLCOAT SA 113 - EASY TO CLEAN
• Product based on non-fluorinated oligomers
• Typical coating thickness < 0,1µm (100nm)
• Colorless
• UV resistant
• Very low surface tension
• Excellent scratch resistence
• Dollcoat SA 113 could be used on any metal
46. DOLLCOAT SA 113 - EASY TO CLEAN
Finger prints are evident on upper (not treated) part of the steel panel
47. DOLLCOAT SA 113 – antigraffiti
The right side of the steel panel was treated with DOLLCOAT SA 113.
His very low surface tension avoid a good adhesion of inks and paints.
48. DOLLCOAT SA 115 on magnesium
DOLLCOAT SA 115 is evident because of the yellow-
violet iridescent color change.
49. DOLLCOAT SA 113 on magnesium
DOLLCOAT SA 113 is colorless
Anticorrosive properties are in any
case very good.
This property could be usefull if
an excellent passivation is
needed and it’s not possible to
paint the surface.
49
50. DOLLCOAT SA 113: corrosion test
The rights side of the iron panel was treated with
DOLLCOAT SA 113 and exposed for 150 hrs in NSS
