发明名称 |
PREPARATION OF POLYPROPYLENE MOLDING COMPOUND |
摘要 |
A propylene block copolymer of high flowability and very good low-temperature toughness is obtained in high yield if the polymerisation of the propylene and the comonomers is carried out using a catalyst comprising a chiral metallocene of the formula I <IMAGE> containing bridges, and an aluminoxane. The polymerisation is carried out in two steps, a crystalline propylene polymer being prepared in liquid monomers in the first step, and a copolymer being prepared in the gas phase in the second step. |
申请公布号 |
JPH06206921(A) |
申请公布日期 |
1994.07.26 |
申请号 |
JP19900404498 |
申请日期 |
1990.12.20 |
申请人 |
HOECHST AG |
发明人 |
MITSUHIYAERU SHIYURETSUKU;ANDOREASU UINTAA;UARUTAA SHIYUPARETSUKU;HARUTOMUUTO KONDOTSUHO;YURUGEN ROORUMAN |
分类号 |
C08F2/00;C08F2/34;C08F2/44;C08F4/60;C08F4/602;C08F4/642;C08F4/6592;C08F10/00;C08F110/06;C08F210/06;C08F297/08;C08L23/10;C08L23/14;C08L23/16;C08L53/00 |
主分类号 |
C08F2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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