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Pigments and dyes


A finely divided material which contributes to optical and other properties of paint, finishes, and coatings. Pigments are insoluble in the coating material, whereas dyes dissolve in and color the coating. Pigments are mechanically mixed with the coating and are deposited when the coating dries. Their physical properties generally are not changed by incorporation in and deposition from the vehicle. Pigments may be classified according to composition (inorganic or organic) or by source (natural or synthetic). However, the most useful classification is by color (white, transparent, or colored) and by function. Special pigments include anticorrosive, metallic, and luminous pigments.

Some of the important pigments


Titanium dioxide
Titanium dioxide, also known as titanium oxide or titania, is the naturally occurring oxide of titanium, chemical formula TiO2. When used as a pigment, it is called titanium white, Pigment White 6, or CI 77891. It has a wide range of applications, from paint to sunscreen to food colouring.
 


 
Related pages.
Epichlorohydrin  Terephthalic acid  Titanium dioxide Neopentylglycol (NPG) Trimellitic anhydride Isophthalic Acid (PIA)
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Article/information contributed by.............. Let's Finish it Team
 

This article is licensed under the  GNU Free Documentation License