发明授权
US5286782A Coating composition of an acrylic polymer, polyol and polyisocyanate crosslinking agent 失效
丙烯酸聚合物,多元醇和多异氰酸酯交联剂的涂料组合物

Coating composition of an acrylic polymer, polyol and polyisocyanate
crosslinking agent
摘要:
A coating composition primarily used as a clear coat of a clearcoat/color coat automotive finish; the composition has a film forming binder solids content of about 30-70% by weight contains about(A) 50-80% by weight, based on the weight of the binder, of an acrylic polymer of polymerized monomers of styrene, and two methacrylate monomers and a hydroxy alkyl methacrylate or acrylate each having 1-4 carbon atoms in the alkyl group and the polymer has a number average molecular weight of about 1,000-12,000 and a calculated Tg of at least 40.degree. C. and(B) 1-20% by weight, based on the weight of the binder, of a polyol component and(C) 10-49% by weight, based on the weight of the binder, of an organic polyisocyanate.
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