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    • 8. 发明授权
    • Boric acid esters and oxetanes for stabilizing phosphite-free
polycarbonates
    • 用于稳定不含亚磷酸酯的聚碳酸酯的硼酸酯和氧杂环丁烷
    • US4225483A
    • 1980-09-30
    • US953131
    • 1978-10-20
    • Erich EimersRolf DheinWolfgang Cohnen
    • Erich EimersRolf DheinWolfgang Cohnen
    • C08L69/00C08K3/00C08K5/55C08K5/04C08K5/15
    • C08K5/55C08K5/15
    • Phosphite-free polycarbonate molding compositions are provided which contain either a boric acid ester containing oxetane groups, a mixture of a boric acid ester containing oxetane groups and a boron-free oxetane compound or a mixture of a boric acid ester which is free from oxetane groups and a boron-free oxetane compound, in amounts between about 0.01 and 1% by weight, relative to the weight of pure polycarbonate resin. A process for stabilizing phosphite-free polycarbonate compositions to light and heat without impairing their resistance to hydrolysis is also provided by the incorporation of either a boric acid ester containing oxetane groups, a mixture of a boric acid ester containing oxetane groups and a boron-free oxetane compound or a mixture of a boric acid ester which is free from oxetane groups and a boron-free oxetane compound.
    • 提供了不含亚磷酸酯的聚碳酸酯模塑组合物,其包含含有氧杂环丁烷基团的硼酸酯,含有氧杂环丁烷基团的硼酸酯和无硼氧杂环丁烷化合物的混合物或不含氧杂环丁烷基团的硼酸酯的混合物 和无硼氧杂环丁烷化合物,其量相对于纯聚碳酸酯树脂的重量为约0.01至1重量%。 通过掺入含有氧杂环丁烷基团的硼酸酯,含有氧杂环丁烷基团的硼酸酯的混合物和无硼的硼酸酯,可以提供将不含亚磷酸酯的聚碳酸酯组合物稳定发光和加热而不损害其抗水解性的方法 氧杂环丁烷化合物或不含氧杂环丁烷基的硼酸酯和无硼氧杂环丁烷化合物的混合物。