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    • 1. 发明授权
    • Random copolymers of ethylene and 4-vinylphenyl esters and method for preparing the same
    • 乙烯和4-乙烯基苯基酯的无规共聚物及其制备方法
    • US07534837B2
    • 2009-05-19
    • US11235300
    • 2005-09-26
    • Michael Thomas SheehanMark E. Wagman
    • Michael Thomas SheehanMark E. Wagman
    • C08F226/06C08F16/18
    • C08F6/001C08F210/02C08L23/08C08F4/32C08F2/00C08F218/12C08F2500/01C08F2500/12C08F2500/20C08F220/06
    • The invention discloses a composition consisting essentially of an E/X/M random copolymer wherein X is from 0.1 to 20 mol % of the E/X/M copolymer and is a 4-vinylphenyl ester, preferably 4-acetoxystyrene; M is from 0 to 40 mol % of the E/X/M copolymer and is one or more ethylenically unsaturated monomers; and E is ethylene. The invention further encompasses a high pressure radical polymerization process for providing the novel polymers; and a base catalyzed transesterification process for conversion of the E/X/M copolymer to an E/Y/M copolymer wherein Y is derived from 4-hydroxystyrene. Another embodiment of the invention is a composition consisting essentially of an E/Y/M random copolymer wherein Y is greater than 1.0 to about 20 mol % of the E/Y/M copolymer and is 4-hydroxystyrene; M is from 0 to 40 mol % of the E/Y/M copolymer and is one or more ethylenically unsaturated monomers; and E is ethylene.
    • 本发明公开了一种基本上由E / X / M无规共聚物组成的组合物,其中X为E / X / M共聚物的0.1-20摩尔%,是4-乙烯基苯基酯,优选4-乙酰氧基苯乙烯; M为E / X / M共聚物的0〜40摩尔%,为一种或多种烯属不饱和单体; E是乙烯。 本发明还包括用于提供新型聚合物的高压自由基聚合方法; 以及用于将E / X / M共聚物转化成其中Y衍生自4-羟基苯乙烯的E / Y / M共聚物的碱催化酯交换方法。 本发明的另一个实施方案是基本上由E / Y / M无规共聚物组成的组合物,其中Y大于E / Y / M共聚物的1.0至约20mol%且为4-羟基苯乙烯; M为0〜40摩尔%的E / Y / M共聚物,为一种或多种烯属不饱和单体; E是乙烯。