发明名称 |
PROCESS FOR PRODUCTION OF PROPYLENE BLOCK COPOLYMER |
摘要 |
Disclosed is a propylene block copolymer having excellent flexibility and impact resistance and showing a good polymer powder form. Also disclosed is a process for producing the copolymer. More specifically, the copolymer is a novel propylene block copolymer which satisfies a specific requirement and is produced by a process comprising continuously performing a multi-step polymerization composed of a former step in which a propylene homopolymer component or a specific propylene copolymer component is produced in the presence of a metallocene catalyst carried on a support and a latter step in which propylene and a specific copolymer component are produced by gas phase polymerization.
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申请公布号 |
EP1911779(A1) |
申请公布日期 |
2008.04.16 |
申请号 |
EP20060781876 |
申请日期 |
2006.07.28 |
申请人 |
JAPAN POLYPROPYLENE CORPORATION |
发明人 |
YUKAWA, KIYOSHI;SAGAE, TAKEHIRO |
分类号 |
C08F297/08;C08L23/10;C08L53/00 |
主分类号 |
C08F297/08 |
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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