发明名称 |
Polypropylene resin composition, polypropylene resin foamed material and process for producing the same |
摘要 |
The present invention relates to a polypropylene resin composition containing about 90 to 60 parts by weight of a polypropylene block copolymer (A); and about 10 to 40 parts by weight of a polyethylene resin (B), wherein the polypropylene block copolymer is a polypropylene block copolymer which contains about 99 to 90% by weight of a crystalline polypropylene (a) and about 1 to 10% by weight of an amorphous ethylene- alpha -olefin copolymer (b) and has a melt flow rate (MFR) of about 2 to 15 g/10 minutes, and a die swell ratio, measured by a capillary rheometer, of at least 1.7. Foamed materials containing a fine and uniform foam are obtainable from this composition.
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申请公布号 |
US5616627(A) |
申请公布日期 |
1997.04.01 |
申请号 |
US19950502880 |
申请日期 |
1995.07.17 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
SAKURAI, TADASHI;ASAO, KOUICHIROU;SAKAMOTO, AKINOBU |
分类号 |
C08J9/10;C08L53/00;(IPC1-7):C08J9/10 |
主分类号 |
C08J9/10 |
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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