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发明授权
CN102229699B 一种改性的聚氨酯和聚氨酯树脂及其制备方法 有权 转让

一种改性的聚氨酯和聚氨酯树脂及其制备方法
摘要：
本发明提供了一种改性的聚氨酯、聚氨酯树脂及其制备方法，其中所述改性的聚氨酯的重复单元如下：其中R基团为：R′基团为：n为10-50的正整数，n’为6-17的正整数，m为1-5的正整数，m’为15-30的正整数，m”为4-10的正整数，改性聚氨酯树脂由质量百分数为80-95％的上述改性的聚氨酯与质量百分数0.1-0.2％的催化剂、质量百分数为2-8％的光热稳定剂、质量百分数为2-8％的水解稳定剂和质量百分数为0.8-4％的脱模剂组成。本发明提高了改性聚氨酯树脂的机械强度和加工工艺性能，更加提高了改性聚氨酯树脂的耐腐蚀老化性能。
摘要（英）：

The invention provides modified polyurethane, a polyurethane resin and a preparation method thereof. A repeating unit of the modified polyurethane is as shown in the formula 1, wherein R group is as shown in the formula 2; R' group is as shown in the formula 3; n is a positive integer from 10 to 50; n' is a positive integer from 6 to 17; m is a positive integer from 1 to 5; m' is a positive integer from 15 to 30; and m'' is a positive integer from 4 to 10. The modified polyurethane resin is composed of 80-95 wt% of the above modified polyurethane, 0.1-0.2 wt% of a catalyst, 2-8 wt% of an optothermal stabilizer, 2-8 wt% of a hydrolysis stabilizer and 0.8-4 wt% of a mold release agent. The preparation method provided by the invention improves the mechanical strength and processing performance of the modified polyurethane resin and strongly raises the anti-corrosion and anti-aging performance of the modified polyurethane resin.

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