Paint types heat-resistant coatings

Some of the paint types belonging to classes such as alkyds, coaltar epoxies, epoxy, heat-resistant, inorganic zinc types, polyurethanes, water-borne coatings as described by Sigma coatings are given in Table 1.29. 

Powders used for fluidized-bed painting [248, 249] include low- and high-pressure polyethylene, polyvinyl butyral (Butvar), polystyrene emulsion, polyamide resin type AK-7, polyoxymethyl-ene, polyvinyl chloride, a copolymer of styrene with methylmeta-crylate, epoxy resin type E-41, phenolformaldehyde resin No. 108, In addition to the main components, pigments and dyes imparting heat resistance and other qualities to the coating are introduced. 

Vinyl lacquers are used mainly where a high degree of chemical resistance is required these lacquers are based on vinyl chlorides and vinyl acetates. Acrylic lacquers are based on methyl methacrylate and methyl acrylate polymers and copolymers. Other esters of acrylic and methacrylic acid also may be used to make nonconvertible film formers. Judicious selection of these acrylic acid or methacrylic acid esters allows one to produce film formers with specifically designed properties such as hardness, flexibility, gloss, durability, heat, and chemical resistance. Acrylic lacquers, however, are not noted for their water resistance. The principal uses of acrylic-type lacquers are fluorescent and metallic paints, car refinish applications, clear lacquers and sealers for metals, and protective coatings for aircraft components and for vacuum-deposited metals, as well as uses in pigmented coatings for cabinets and appliances. 

Chem. Desap. Polyethylene waxes and PTFE Uses Lubricantforflexo, gravure web of L heat-set and quick-set sheetfed printing inks, UV and metal decorating printing inks, coil coatings, industrial paints or finishes and all types of overprint varnishes Features Provides exc. rub resist, and hardness can directly replace high priced PTFE powds. 

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