发明名称 |
Polypropylene impact copolymers with high clarity |
摘要 |
The present invention teaches propylene-ethylene copolymers of about 5 to about 100 dg/min melt flow that have a homopolymer phase combined with a copolymer rubber phase in which the ethylene content of the rubber is between about 75 to about 95% w and a clarity of greater than 25%. The rubber content of the copolymer ranges between about 3% w to about 60% w. In addition to improved clarity, these copolymers have high stiffness (flexural modulus) and good falling weight impact toughness at low temperatures.
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申请公布号 |
US6015854(A) |
申请公布日期 |
2000.01.18 |
申请号 |
US19970957418 |
申请日期 |
1997.10.24 |
申请人 |
UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION |
发明人 |
MCCULLOUGH, JR., JAMES DOUGLAS |
分类号 |
C08F297/08;C08L23/12;C08L23/16;(IPC1-7):C08J5/36 |
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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