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发明授权
US5373043A Particulate polymers and stabilizer compounds and polymer compositions prepared therefrom 失效
颗粒聚合物和稳定剂化合物及由其制备的聚合物组合物

Particulate polymers and stabilizer compounds and polymer compositions prepared therefrom
摘要：
This invention relates to a solid particulate polymer comprising 1) a backbone containing (a) a plurality of moieties selected from the group consisting of alkylene, arylene, aralkylene, alkylarylene, cycloalkylene, alkyleneoxy, and polyalkyleneoxy; (b) a plurality of moieties selected from the group consisting of internal urea, thiourea, biuret and dithiobiuret; and 2) end groups selected from the group consisting of internal urea, thiourea, biuret and dithiobiuret. The particulate polymer dispersions can be used for preparing reinforced polymer matrices, especially where the matrix comprises urethane and/or urea linkages.The invention allows for the preparation of a particulate polymer without using organic polyisocyanate.
摘要（中）：

本发明涉及固体颗粒聚合物，其包含1）主链，其含有（a）多个选自亚烷基，亚芳基，亚芳基，烷基亚芳基，亚环烷基，亚烷基氧基和聚亚烷基氧基的部分; （b）多个选自内部尿素，硫脲，缩二脲和二硫代替西脲的部分; 和2）选自内部尿素，硫脲，缩二脲和二硫代替西脲的端基。 颗粒聚合物分散体可用于制备增强聚合物基质，特别是在基质包含氨基甲酸酯和/或脲键的情况下。 本发明允许制备颗粒聚合物而不使用有机多异氰酸酯。

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