THE COMPLETE PRACTICAL PAINTS PRODUCTION

1.Emulsion  paints

2.Textured paints

3.Felxtured paints

4.Marble Trowel

5.Satin& Silk paints

6.Gloss paints

7.POP paints

8.Vinyl matt Emulsion

9.Fire Retardant paint

10.Anti Rust & primer coatings

11.Stucco paints

12.Pigment paste

13.Wall Filler

14.Screeding paints

15.Fluoresent paints

PAINT  TECHNOLOGY

PAINT : Is  defined as  a dispersion mixture of one  or  more substances in a vehicle.

VEHICLE : Is a liquid consisting of non-volatile film forming material, a volatile solvent called THINER and sometime an  oil.When paint is applied on a surface the thinner evaporated while the other components remain.

TYPES  OF PAINTS

1.      GLOSS OR OIL PAINT : These paints can only be thinned with organic or related Lacquer,Enamel,Industrial paints etc.They are based on natural or synthetic resins.

2.      EMULSION PAINTS (WATER BASED PAINTS): Paints that can be thinned with water are usually called Emulsion paints.They are matt,hard,durable, protective and absorbs heat due to  its porous nature.

3.      Generally,paints could be domestic,industrial,primer,surface or finish.

IMPORTANCE OF PAINTS

(a)   Beautification:Used to decorate

(b)   Protective: Protects surface.

(c)    Corrective: To cover or fill space

AREAS OF APPLICATION

(a)   Domestic :House,Furniture,Kitchen wares etc.

(b)   Industrial :Factories,Marine,Offices,Vehicles etc.

CONSTITUENTS OF PAINTS (RAW MATERIALS)

1.      RESIN : This is  the film forming part of paint.It also bind other components of paint to the surface.There are natural and synthetic resins.

2.      PIGMENTS/COLOURANTS :Pigment is a solid substance which give paint its desire colour.It also provides body to the paint.There are many types which are used solely or in combination with other  pigments.These could be organic or in-organic.

3.      EXTENDERS/FILLERS :These are cheap,low refractive materials added to paints to reduce cost, increase durability and give body to the paints.Examples of important extenders are talc, Barytes,Silica,Mica,Gypsum, Clay, Kaolin, Caicite, Calcium Carbonate, Magnesium Silicate etc.

4.      DRIERS : Driers are catalyst which carry oxygen (air) into the paint system. They accelerate the drying of the paint through oxidation,polymerization and condensation.Important driers are resinate, oleanatenaphthenates of Cobalt,Zinc, Calcium, Serelium,Lead, Manganese etc. Cobalt driers are the most efficient and are surface driers. Lead are bottom driers, Manganese,Zinc and some others are thoroughas surfactants and emulisfiers.Polyvinyl acetate based paints do not need driers as they are fast drying.

5.      EMULSIFIERS : There are soaps that help in dispersion/wetting of the soild components of the paint.They by their nature blend with both oil and non- oil (e.g water) materials zinc drier, sodium lecithin, soya lecithin,sodium lauryl sulphate,cetrimideetc.are good examples.

6.      THICKNER : Carboxylmethyl cellulose (CMC),Hyroxylmethyl cellulose such as Natrosol,Cellasize,Bermosol,Carbopol are common types. There are the organic ones. Inorganic ones include bentone,Easy Gel, Econogel etc.

7.      PLASTICIZERS : They provide elasticity,minimize cracking of the paint,make the paint to flow.Tricresylphosphate,Dioctylphthalate, Dibutyltartarate are  common example.They are very necessary in wood,Leather, metal and plastic paints.

8.      BIOCIDES : Chemicals that kill micro- organisms such as algae, fungi,mucour, etc are added into paints to prent it from decay.Emulsion paints usually contain these items Formalin,Cuppersulpate,Acticide, Pine Oil, Methyl paraben, Propyl paraben Acticide, Chloroxylenol,Cetrimide are used.There items are hardly  incoroporated into oil paints due to the fact that resins are rarely attacked by microbes.

9.      ANTIFOAMS: Pine Oil, Silicon Oil,Whitespirit,Kerosene, Gasoline are materials that can stop excessive foaming in paints systems.

10.  FLOATING AGENTS : CMC, Bentonite,Procol,Calceletc are some times added to paints to reduce the tendency for the solid water in  paints to settle at the bottom.

11.  ANTI SKINNING AGENTS : Oil paints have the tendency to gell  or skin.To avoid this wastage of paint polyhydraoxylphenols,oximes, Polyalkyl amines are incorporated in to the paints.

12.  OTHERS :Whitening agents such as tinapol,Aluminium Silicate are put,waxes such as Bee wax,carnubau wax, PJ, montan wax can also help the paint to set crack free.BUFFERS AND PRESERVATIVES such as sodium benzoate, sodium citrate, citric acid are sometimes employed to reduce undesired reactions in the paint, Starch, Protein Casein are used as Stabilizers.

13.  THINNERS & DILUENTS: These are very important solvents which reduce the viscosity of the paint; desolve the resins and solids suspend solids, help  in drying among others.They include: water,kerosene,Alcohol,Ketones,Acettates,Petroleum solvents Glycols etc.

Up to 80% of these raw material imputs in paint can be sourced locally. A 100% local raw material based paint is being tested.

QUALITIES OF A GOOD PAINT

1.      It must be fluid enough to enable easy application.

2.      It should posses high covering power

3.      It should form tough, uniform, adherent,impervious film.

4.      The film should not get cracked on drying.

5.      It  should protect/decorate the painted surface.

6.      It should form a lustre or clean film.

7.      The paint  should be stable and durable.

8.      It should not be poisonous to the user (for domestic paints mosly).

9.      It should have a good pot and shelf life.

10.  The paint should be the type that can be applied by one or more of the following methods:

(a)   Brushing (b) Rolling (c) Spraying (d) Dipping (e) Tumbling depending o n  the surface to be painted.

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• SKU: 1234B