Paint is a chemical substance used for decorative and protective purposes that leaves a thin film on surfaces. There are various types of paint classified by connectors, application method, sector of use, and drying type. Paint consists of pigments that provide color, covering, and anti-corrosive properties, as well as solvents, connectors, additives, and fillers. Proper weather conditions and application techniques are important for ensuring paint adheres well and dries correctly.

1. PAINT
Çiğdem Altın Gümüşsoy
14.01.2004

2. What is paint?
Paint is a chemical substance used on
surfaces for decorative and protective
purposes.
It leaves a thin film on the surfaces.

3. Types of paints
 On the basis of connectors
1. Termoplastic
2. Termoset
 On the basis of sectors
1. Textile
2. Coatings
3. Leather
4. Marine
5. Plastic add.

4.  On the basis of application
1. Spraying
2. Dipping
3. Rollers
4. Brushes
 On the basis of drying
1. Air drying
2. Oksidation
3. Solvent evaporation

5.  Connectors: are in the form of polimers that
they occur the paint film after drying
1. Alkid connectors
Alkids are usually the products of poli
alcohols and poli asids.
The important difference of alkids from
other polyesters is the incurrance of
monoasids. These monoasids are usually oil
asids.

6. n(R-COOH) + n(R-OH) R-C-OR + H2 O
O
The carboxil group of organic asid and
hydroxil group of alcohol.
The outcome is ester and H2 O

7. Raw material used for the production of
alkids
 Poliasids
 Monoasids
 Polialcohol
 Solvents
 Catalists

8.  Alcids may be classified on the
basis of oil lengths
1. %20-45 oil ingridents, short oiled
alkid (auto and synthetic paints)
2. %45-60 oil ingridents, medium
oiled alkid (constructing and auto
synthetic paints)
3. %60-80 oil ingridents, long oiled
alkids (constructing and synthetic
paints)
Performance
decrease,
application
becomes
more easier

9. PVA Connectors
It occurs with the polimerisation of Vinil
Asetat Monemer (generally used in
plastic wall paints and glue).
This reaction is a exothermic reaction, so
it has to be controlled with the cooling
reactors.
n(CH2 = CH) (CH2-CH)n
CH3 CH3

10. Drying type Connector type Product
Solvent vaporization Seluluzik resins
Silicon resins
PVA, akrilik
Auto paints, transoprene
marine paints, paints
resistant to high heat
Oxidation Alkid and modified
alkid
Ferrolin, alimunium and
marine paints
With reactions Epoksi poliamin, epoksi
poliamid, akrilik
Yacht and furniture
paints
Furnace dried Alkid amino, termoset
akriliks, epoksi aminos,
fenolik resins
Industry paints

11.  Solvent vaporization:The solvents of the
film vaporates and the molecules of
connectors occur a connection between
them.
 Oxidation: While the solvents vaporates,
molecules of connectors occur a oxygen
bridges that form the firm hard.

12.  Pigments: Organic and inorganic
substances. Colour, covering and
antikorazif features are supplied by
pigments.
Pigments do not solve in any kind of
solvents and they have a dimension less
than 1 micron.

13. Physical Features of Pigments
 Colour
 Coverity
 Resistant to light
 Absorbing oil (it has to be high)
 Solve in water and alcohol
 Dispersion

14. Chemical Features
 Resistant to asid alkali
 Chemical structure
 Antikorrazif

15. Colour Pigments
 Inorganic Colour Pigments
 Titanyum Dioxide Tio2
 Zinc Oxide ZnO
 Iron oxide Fe2O3-Fe3O4
 Molibden Compounds
 Metal Al, Zn, Pb, Cu

16.  Organic Pigments
 Azo compounds
 Phtalocyanine
 Carbon black
 Antikorrazif Pigmets
 Zinc Cromat 4ZnO.4CrO4.K2O.3H2O
 Zinc Tetraoksikromat ZnCro4.4Zn(OH)2
 Zinc fosfat Zn3 (Po4)2.2H2O

17.  Filling Pigments: It give a specific
thickness to the paint.
 Talk 3MgO.4SiO2.H2O
 Barit BaSo4
 Kalsit CaCo3
 Kaolen SiO2.AlO3
 Dolamit CaCo3.MgCo3

18.  Solvents: Solvents usually is added in two
phases.
In the first phase, paint, less liquid or solid,
become liqiuified.
In the second phase paint become applicable
with rollers or brushes.
In this sense, tiner is added to the synthetic
paints and water is added to the plastic
paints

19.  Grouped into three
1. Real solvents (ester and ketons)
2. Secret solvents (Alcohol)
3. Seyreltici solvents (aromatic hydocarbon)
If these solvents are not distirbuted fairly,:
 Blister
 Bad sticking
 Milking
 Oranging

20. Raw material Liquified raw material
Solid Additives First mixture
Colour tank making colour last tests
Controlling Filling

21.  A good paint includes:
1. Recoverability: Paint recover the surface applied.
It is wanted to recover the surface with two
applications
2. Easily applicable:
3. Resistant to physical effects
4. Resistant to chemical effects (saop, cola, oil)
5. It should be resistant to athmosferic and special
situations like rain, sun
6. It should be decorative

22.  Which wheather condition is suitable for
painting?
 Synthetic paints: It is not recommended to
paint less than +5°c.
At the +15 °c, the drying duration
decrease by third times.
Less than +0 °c, drying duration increases
8-10 days.

23.  Plastic paints (PVA, akrilik paints): It is not
recommended to be painted under +5 °c.
Because the connectors of paints lose their film
structure and become dry. So they can be affected
by rain.
 Exterior paints: Exterior parts should be painted
under +20 +30 °c and can dry within 6-8 hours
 +10°c : can be affected within 24 hours
 +5°c: within 36 hours

24. The important aspects of painting
 Wheather conditions
 Shaking the paint
 Close the cap of paint when not used
 Do not apply on the oiled or swelled
surfaces
 Apply two layer paint instead of one
layer paint