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US4276212A High solids coating composition of a low molecular weight acrylic polymer and an alkylated melamine cross-linking agent 失效
低分子量丙烯酸聚合物和烷基化三聚氰胺交联剂的高固含量涂料组合物

High solids coating composition of a low molecular weight acrylic
polymer and an alkylated melamine cross-linking agent
摘要:
The high solids coating composition contains at least 50% by weight of a binder of film-forming constituents in which the constituents are of(A) an acrylic polymer that has a number average molecular weight of about 500-4,500, a hydroxyl content of at least 2% by weight, a glass transition temperature of about -20.degree. C. to +20.degree. C. and optionally contains a chain transfer agent, and is ofan alkyl methacrylate,a hydroxy alkyl acrylate ora hydroxy alkyl methacrylate,and optionally, an alkylacrylate or styrene(B) an alkylated melamine formaldehyde cross-linking agent;the composition is particularly useful as an exterior finish for automobiles, trucks, airplanes and can be used as an appliance finish and for coil coatings.
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