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    • 15. 发明授权
    • Coatings for thermoplastics
    • 热塑性塑料涂料
    • US4315091A
    • 1982-02-09
    • US137699
    • 1980-04-07
    • Helmut SteinbergerManfred SchonfelderHans-Heinrich MorettoChristian Wegner
    • Helmut SteinbergerManfred SchonfelderHans-Heinrich MorettoChristian Wegner
    • C08L83/00B32B27/00C08G18/61C08J7/04C08K5/09C08L83/04C09D183/04C08G77/04
    • C08J7/047C08G18/61C08K5/09C09D183/04C08J2483/00Y10T428/31507Y10T428/31663
    • A coating composition to improve the abrasion and scratch resistance of plastics such as polycarbonate, consisting essentially of about(A) 10-40% by weight of a partially hydrolyzed siloxane compound which is obtained by hydrolyzing in water at about 50.degree.-80.degree. C. over a period of about 1-12 hours at least one of(a) a hydrocarbon-trialkoxysilane of the formula R'Si(OR").sub.3 whereinR' is an alkyl group with 1 to 4 carbon atoms or a phenyl or vinyl group, andR" is an alkyl group with 1 to 4 carbon atoms,(b) a co-condensation product of (a) and about 1 to 40% by weight of a phenyl- or vinyl-trialkoxysilane, the alkoxy group containing 1 to 4 carbon atoms,(c) a co-condensation product of 1 mol of (a) and 0.05 to 1 mol of a tetraalkoxysilane, in which the alkoxy group contains 1 to 4 carbon atoms, and(d) a co-condensation product of 1 mol of (a) and 0.05 to 1 of a dialkyldialkoxysilane, in which the alkyl and alkoxy groups contain 1 to 4 carbon atoms.(B) 0 to 40% by weight of an aqueous dispersion of colloidal silicon dioxide,(C) 0 to 5% by weight of an etherified methylolmelamine,(D) 0.05 to 15% by weight of a blocked polyisocyanate,(E) 0.5 to 30% by weight of acetic acid, and(F) an inert organic solvent as the remainder.
    • 一种用于改善诸如聚碳酸酯的塑料的耐擦伤性和耐擦伤性的涂料组合物,其基本上由约(A)10-40%(重量)部分水解的硅氧烷化合物组成,所述部分水解的硅氧烷化合物通过在约50-80℃的水中水解获得 在约1-12小时的时间内,(a)式R'Si(OR“)3的烃 - 三烷氧基硅烷中的至少一种,其中R'是具有1至4个碳原子的烷基或苯基或 乙烯基,R“是具有1至4个碳原子的烷基,(b)(a)和约1至40重量%的苯基或乙烯基 - 三烷氧基硅烷的共缩合产物,烷氧基 含有1〜4个碳原子的烷氧基,(c)1摩尔(a)和0.05〜1摩尔含有1〜4个碳原子的烷氧基的四烷氧基硅烷的共缩合产物,(d) 1摩尔(a)和0.05〜1的烷基和烷氧基含有1〜4个碳原子的二烷基二烷氧基硅烷的缩合产物。 (B)0〜40重量%胶体二氧化硅水分散体,(C)0〜5重量%的醚化羟甲基三聚氰胺,(D)0.05〜15重量%的封端多异氰酸酯,(E)0.5 至30重量%的乙酸,和(F)作为其余的惰性有机溶剂。