PAINTSPrepared by:Amboy, Marie AstridGironella,Domingo JannoRemorosa, Valerie FaySinad, Korina VidaVallejos, Glady Micca

INTRODUCTIONPaints are liquids with various colors which are used to protect, to color or to decorate or beautify objects.

Paints were already available since pre-history.

HISTORY

First used as a protective coating to the exposed wood of ships.

•The twentieth century has seen the most changes in paint composition and manufacture.

•Today, synthetic pigments and stabilizers are commonly used to mass produce uniform batches of paint.

OLD PAINTINGS

PHILIPPINE PAINT INDUSTRY

In the Philippines, major international players operate through licensees and subsidiaries rather than operatingdirectly.

Local paint company, PacificPaints, is the only local company which has achieved great success in thismarket.Columbus Manufacturer –the first Filipino paint

companyOther Paint manufacturers: Welcoat, Davies,

Coat Saver and Sphero

MANUFACTURING PROCESS

In ancient days, paints were made by mixing a natural resin from a plant or tree with natural colorants from the earth or plants. The ingredients were mashed together in a certain type of container.

RAW MATERIALS PIGMENTS-main and important constituent of paints-give color to paints-must be opaque to ensure good covering power and chemically inert to secure stability, hence, long life-should be of very low toxicity or much better, nontoxic, and low cost

RAW MATERIALS

PIGMENTS-usually inorganic substances such as titanium dioxide, chrome pigment, earths, lead pigments and zinc pigments-It can also be a pure, insoluble organic dye known as a toner or an organic dye precipitated on an inorganic carrier such as aluminium hydroxide, barium sulphate or clay.

RAW MATERIALS Binders-Binders or vehicles are resins or oils. It

binds the pigment to the substrate. Solvents-dissolve the binder, adjust the paint viscosity

and give homogeneous, regular and uniform

thickness on the coated surface.(ex. petroleum

ether,tolueneand xylene)

RAW MATERIALS

Fillers-pigment extender which reduce the

paint cost and control the viscosity of paints. ex. clay, talc, gypsum and calciumcarbonate

RAW MATERIALS Additives –used to modify surface tension,

improve flow properties and improve the finished appearance

-other types of additives include thickeners, texturizers,adhesion promoters, UVstabilizers, biocides to fightbacterial growth and others.

RAW MATERIALSDriers -accelerates drying-are cobalt, lead, zinc, zirconium, manganese, calcium and barium

Anti-skinning agents- prevent the solidification of paints’ surface during storage

RAW MATERIALSAnti-settling agents -improve the dispersion efficiency of the pigments into the binder to prevent settling of pigments during storage.

Plasticizers - improve the elasticity of paint films, and to minimize the paint films’ tendency of cracking. -these materials are special types of oils, phthalate esters or chlorinated paraffins

Dispersants - give the paint specific property for specific

purpose or application.

TITANIUM DIOXIDE PAINTS Titanium dioxide-also known as titania and it is a naturally

occurring oxide of titanium–widely used white pigment because of its

brightness and very high refractive index–it provides the whiteness and opacity to

products

RAW MATERIALS

Utilities

Steam is used for providing heat requirements and in some large facilities for electric power generations.

Water is used as process water, as rinse water, as boiler feed water or as cooling water and for domestic purposes.

DIFFERENT TYPES OF PAINTS Solvent-based paints Water-based paints Varnishes or clear coatings Printing inks Resins

THE EQUIPMENTS Mixers

-used to achieve homogeneity between different components

-The different types of mixers are: manual mixers, automatic mixers, kneaders, colloid mills, rotary churns and mixing by air streams.

Mills

-used to refine the texture of the mixture-In the roller mill, the clearance between rollers must be controlled accurately to maintain the desired finesse of dyes or paints.

Filters-used to separate or remove contaminations or foreign objects that may have been included in the liquids

THE EQUIPMENTS Packing Machines- may be manual, semi-automatic or automatic according to the size of production. The machines also differ in

speed and packs handling.

Schematic diagram of a paint production industry

PRODUCTION LINE

Production of solvent-based (household/industrial) paints

Mixing

Grinding Intermediate Storage

Thinning/

Dilution

Filtration and

Finishing

PACKAGING and

STORAGE

PRODUCTION LINE Production of water- based paints

Mixing

Grinding

Intermediate

Storage

Mixing of

Additives

FILTRATION and

FINISHING

PACKAGING and

STORAGE

APPLICATIONS

1.Paint can either be applied as a solid, a liquid or a gaseous suspension depending on the practical or artistic results desired.

2.The commonly used is the liquid application.

3.As a solid, the paint is applied as a very fine powder and is baked at a very high temperature.

4.In paint as a gaseous suspension, it is suspended in solid or liquid form that is sprayed on an object.

ROLE OF CHEMIST 1.Quality control department -for the maintenance of the quality of the raw

materials and the final product. The product should meet the specifications before releasing to the market

2.Research and development department

-the chemist would search for a new and efficient way for a new process and development of the product

QUALITY CONTROL OF PAINTS

Inspection of Physical Properties-inspection for density, fineness of

grind, dispersion and viscosity

Inspection of Paint’s Aesthetic components

-color, resistance to fading of color, hiding power, gloss

Conduction of tests to measure the paint’s more functional qualities

-mar resistance, adhesion, scrubbability, weathering, fire retardancy

WASTE MANAGEMENT California Rule 66 Use of paint powder coatings which

does not require solvents Water as solvents In-house water treatment facility Latex sludge as fillers for other

industrial processes Waste solvent recovering and recycling

Thank you for listening! ;)