发明名称 |
Propylene-ethylene block copolymer |
摘要 |
Disclosed is a propylene-ethylene block copolymer which is superior in stiffness, hardness and moldability and also in balance between toughness and low-temperature impact resistance. The copolymer contains from 60 to 85% by weight of a crystalline polypropylene portion and from 15 to 40% by weight of a specific propylene-ethylene random copolymer portion, wherein the propylene-ethylene block copolymer has a melt flow rate (MFR) of from 5 to 120 g/10 min.
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申请公布号 |
US2004030052(A1) |
申请公布日期 |
2004.02.12 |
申请号 |
US20030436252 |
申请日期 |
2003.05.13 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
KANZAKI SUSUMU |
分类号 |
C08F110/06;C08F210/06;C08F210/16;C08F297/08;(IPC1-7):C08F293/00 |
主分类号 |
C08F110/06 |
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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