Coating Color Formulations

The ready availabiUty of computers has led to the detailed analysis of the colorant formulation problems faced every day by the textile, coatings, ceramics, polymer, and related industries. The resulting computer match prediction has produced improved color matching and reductions in the amounts of colorants required to achieve a specific result with accompanying reductions of cost. Detailed treatments have been given for dyes and for pigments (13,29,30). 

Ti02-mica pigments are used in all color formulations of conventional pigments where brilliance and luster are required in addition to color, i.e., in plastics, coatings, printing, and cosmetics. A major market for silver white pigments (pearl pigments, white metallic ) is the plastics industry. 

Pearl luster pigments are used to obtain pearl, iridescent (rainbow), or metaUic effects, and in transparent color formulations to obtain briUiance or two-tone color, luster flops, and color travel effects (changing with viewing angle). The most important appUcations are plastics, industrial coatings, printing inks, cosmetics, and automotive paints. 

Uses Antifoamer for coating color formulation of paper... 

Chem. Descrip. 2-Ethylhexyl-2-cyano-3,3-diphenylacrylate CAS 6197-30-4 EINECS/ELINCS 228-250-8 Uses UV stabilizer for plastics (PVC plastisols, plasticized PVC, liq. color formulations), acrylic coatings, varnishes, nitrocellulose and other lacquers, PUs, polyester gelcoats, inks, acrylic and vinyl adhesives Features Good heat stability... 

The primary resins used in this market are the radiation-curable epoxy acrylates, accounting for 60% of the resins used. A small amoimt of cycloaliphatic epoxies are also used in UV-curable inks and resists. Phenol and cresol epoxy no-volacs, and bisphenol A based epoxies are used in thermally cured formulations. The epoxy novolacs are used where higher heat resistance is needed such as in solder masks. Both free-radical and cationic-curable UV inks and colored base coats have grown rapidly because of the needs for higher line speeds, faster cleanup or line turnaround, less energy consumption, less capital for a new hne, and fewer emissions. 

Colored pigments are applied more often in surface coloring and coating formulations where they are superior to soluble dyes, because they do not follow the water into the paper sheet when the starch or size or pigment coating is appHed. 

More details about coating color formulations depending on the specific paper and board grades are mentioned in Section 7.5. 

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