Vinyl-containing stereospecific polypropylene macromers
    15.
    发明授权
    Vinyl-containing stereospecific polypropylene macromers 失效
    含乙烯基立体定向聚丙烯大分子单体

    公开(公告)号:US6117962A

    公开(公告)日:2000-09-12

    申请号:US20101

    申请日:1998-02-06

    摘要: Stereospecific polypropylene macromers having a high percentage of vinyl terminal bonds and a method for preparing them are provided. The stereospecific polypropylene macromers have number average molecular weights (M.sub.n) of about 2,000 Daltons to about 50,000 Daltons, and the total number of vinyl groups per 1000 carbon atoms is greater than or equal to 7000.div.M.sub.n. The method for preparing the macromers involves:a) contacting, in solution, at a temperature from about 90.degree. C. to about 120.degree. C., two or more propylene monomers with a catalyst composition comprising a chiral, stereorigid transition metal catalyst compound; andb) recovering stereospecific polypropylene chains having number average molecular weights of about 2,000 Daltons to about 50,000 Daltons and significant vinyl unsaturation.

    摘要翻译: 提供了具有高百分比乙烯基端键的立体特异性聚丙烯大分子单体及其制备方法。 立体有择性聚丙烯大分子单体的数均分子量(Mn)为约2,000道尔顿至约50,000道尔顿,每1000个碳原子的乙烯基总数大于或等于7000分子量Mn。 制备大分子单体的方法包括:a)在溶液中,在约90℃至约120℃的温度下接触两种或多种具有包含手性立体刚性过渡金属催化剂化合物的催化剂组合物的丙烯单体; 和b)回收数均分子量为约2,000道尔顿至约50,000道尔顿的立体有择聚丙烯链和显着的乙烯基不饱和度。