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composition in powder for armed king surfaces of objects with a decorative or protective finishing
composition in powder for armed king surfaces of objects with a decorative or protective finishing
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机译：粉末状成分，用于带有装饰性或防护性装饰的物体的武装王表面
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摘要
Powder coating compositions are disclosed which, exclusive of pigments and other nonreactive components, comprise a coreactive mixture of: (A) a copolymer of between about 5 and about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and between about 95 to about 80 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature in the range of 40 DEG C to 90 DEG C and a number average molecular weight (Mn) of between about 2500 and about 8500; and (B) an organic carboxylic acid anhydride crosslinking agent, said anhydride being present in the amount of from about 0.4 to about 1.0 anhydride groups for each epoxy group in the copolymer.
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