| 发明名称 |
Process for the preparation of a polypropylene molding composition |
| 摘要 |
Process for the preparation of a polypropylene molding composition A propylene block copolymer having good flow properties and a very good low temperature impact strength is obtained in a high yield if a catalyst which consists of a chiral metallocene, containing a bridge, of the formula I <IMAGE> (I) and an aluminoxane is used for the polymerization of propylene and the comonomers. The polymerization is carried out in two stages, a crystalline propylene polymer being prepared in the first stage.
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| 申请公布号 |
US5708090(A) |
申请公布日期 |
1998.01.13 |
| 申请号 |
US19950461406 |
申请日期 |
1995.06.05 |
| 申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
SCHRECK, MICHAEL;WINTER, ANDREAS;DOLLE, VOLKER;KONDOCH, HARTMUT;ANTBERG, MARTIN;ROHRMANN, JUERGEN |
| 分类号 |
C08F4/60;C08F4/622;C08F4/626;C08F4/642;C08F4/646;C08F4/6592;C08F4/68;C08F4/69;C08F8/00;C08F10/06;C08F210/06;C08F210/16;C08F297/04;C08F297/08;C08L23/10;C08L23/12;C08L23/14;C08L23/16;C08L53/00;(IPC1-7):C08L23/06 |
主分类号 |
C08F4/60 |
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