发明名称 |
Block copolymer of propylene and ethylene |
摘要 |
Catalyst systems comprising, on the one hand, a catalytic solid based on complexed titanium trichloride and, on the other hand, a nonhalogenated organoaluminium activator. When employed in gas phase olefin polymerisation processes, these catalyst systems make it possible to manufacture a wide range of homopolymers and copolymers (random and block) with an isotacticity index which can be adjusted to very low values and with excellent pourability, even in the case of copolymers of high comonomer content. In the absence of transfer agents they also make it possible to synthesize polymers of very high molecular masses, with an increased activity. These polymerization processes yield particularly advantageous results in the case of propylene.
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申请公布号 |
US5922813(A) |
申请公布日期 |
1999.07.13 |
申请号 |
US19950476025 |
申请日期 |
1995.06.07 |
申请人 |
SOLVAY POLYOLEFINS EUROPE-BELGIUM |
发明人 |
COSTA, JEAN-LOUIS;PAMART, SABINE;HALLOT, GAETANE |
分类号 |
C08F4/642;C08F4/60;C08F4/655;C08F4/658;C08F10/00;C08F10/02;C08F10/06;C08F110/06;C08F210/06;C08F210/16;C08F297/06;C08F297/08;(IPC1-7):C08F297/08 |
主分类号 |
C08F4/642 |
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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