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PU树脂组成JP 61130873(1986-06-18)这是由1种特殊的多异氰酸酯和1种丙烯酰基多元醇得到的PU树脂组成,其薄膜的干燥能力、力学性能、耐候性和耐化学品性都得到了改善。其中,多异氰酸酯是由质量比为(20/80)～(80/20)的TMXDI衍生物(A)与HDI衍生物(B)组成的混合物,而丙烯酰基多元醇的分子量为1000～100000,羟值为20～200。(A)是m-TMXDI或它的混合物与低分子量多元醇经反应得到的端异氰酸酯预聚物,(B)是HDI与低分子量多元醇经反应得到的预聚物。
PU resin composition JP 61130873 (1986-06-18) This is a PU resin obtained from a special kind of polyisocyanate and an acrylic polyol, and its film’s drying ability, mechanical properties, weatherability and chemical resistance Have been improved. Wherein the polyisocyanate is a mixture of a TMXDI derivative (A) and an HDI derivative (B) in a mass ratio of (20/80) to (80/20), and the acryl polyol has a molecular weight of 1,000 to 100,000, The hydroxyl value is 20-200. (A) is an isocyanate prepolymer obtained by reacting m-TMXDI or a mixture thereof with a low-molecular-weight polyol, and (B) a prepolymer obtained by reacting HDI with a low-molecular-weight polyol.