发明名称 |
High melt strength polyethylene compositions |
摘要 |
The invention is a polyethylene composition having a polydispersity index of less than or equal to 3, an average branching index (g') as measured by GPC/Vis>/=0.9, and a melt strength (MS) (centiNewton, 190 DEG C.) that satisfies the relationship: In a preferred embodiment these polyethylene compositions comprise A) branched polyethylene copolymers prepared by insertion polymerization of ethylene, ethylene-containing macromers, and optionally, additional copolymerizable monomers, and B) essentially linear ethylene copolymers. Improved melt strength without sacrificing the benefits of narrow polydispersity index are exhibited by the invention compositions.
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申请公布号 |
US6114457(A) |
申请公布日期 |
2000.09.05 |
申请号 |
US19980019567 |
申请日期 |
1998.02.06 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
MARKEL, ERIC J.;DEGRACIA, CARLOS U.;DEKMEZIAN, ARMEN H. |
分类号 |
C08F110/02;C08F210/18;C08F255/00;C08F255/02;C08F257/02;C08F290/00;C08F290/04;C08F297/08;C08L23/02;C08L23/08;C08L51/06;(IPC1-7):C08L23/06 |
主分类号 |
C08F110/02 |
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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