发明名称 |
High tensile strength amorphous 1-butene/propylene and ethlene/propylene copolymers |
摘要 |
Amorphous propylene/1-butene and ethylene/propylene copolymers having increased tensile properties produced by the process comprising: reacting propylene and 1-butene monomers or ethylene and propylene monomers in the presence of a catalyst system comprising: (a) a solid supported catalyst component is prepared by the method comprising: (i) co-comminuting magnesium halide support base and alumminum trihalide in a molar ratio from about 8:0.5 to about 8:3 in the absence of added electron donor; and (ii) then co-comminuting the product of step (i) in the absence of added electron donor with sufficient titanium tetrahalide to provide a molar ratio of magnesium halide to titanium tetrahalide from about 8:0.1 to about 8:1.0; (b) a trialkylaluminum co-catalyst, having from 1 to 9 carbon atoms in each alkyl group in an amount such that the Al/Ti ratio is between about 50:1 and about 500:1; and (c) an alkoxy silane component of the formula RnSi(OR')4-n where n=1-3, R=aryl or alkyl and R'=C1-3 alkyl.
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申请公布号 |
US5637665(A) |
申请公布日期 |
1997.06.10 |
申请号 |
US19950473289 |
申请日期 |
1995.06.07 |
申请人 |
REXENE CORPORATION |
发明人 |
SUSTIC, ANDRES;ALLEN, GEORGE C. |
分类号 |
C08F4/649;C08F4/654;C08F210/06;C08F210/08;C08F210/16;(IPC1-7):C08F4/649 |
主分类号 |
C08F4/649 |
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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