发明名称 |
PROPYLENE POLYMERS INCORPORATING POLYETHYLENE MACROMERS |
摘要 |
A polyolefin product is provided which comprises a branched olefin copolymer having an isotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole percent. Also, the mass ratio of the isotactic polypropylene to the polyethylene ranges from 99.9:0.1 to 50:50. Additionally, a process is provided for preparing a branched olefin copolymer which comprises: a) copolymerizing ethylene, optionally with one or more copolymerizable monomers, in a polymerization reaction under conditions sufficient to form copolymer having greater than 40 % chain end-group unsaturation; b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor under suitable polypropylene polymerization conditions using a chiral, stereorigid transition metal catalyst capable of producing isotactic polypropylene; and c) recovering a branched olefin copolymer.
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申请公布号 |
CA2277063(A1) |
申请公布日期 |
1998.08.13 |
申请号 |
CA19982277063 |
申请日期 |
1998.02.06 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
DEKONINCK, JEAN-MARC;GADKARI, AVINASH CHANDRAKANT;DEKMEZIAN, ARMEN H.;WENG, WEIQING;MARKEL, ERIC J. |
分类号 |
C08F2/08;C08F4/64;C08F10/06;C08F110/02;C08F210/18;C08F255/00;C08F255/02;C08F257/02;C08F290/00;C08F290/04;C08F297/08;C08L23/02;C08L23/08;C08L51/06;C08L55/00;(IPC1-7):C08F297/08 |
主分类号 |
C08F2/08 |
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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