发明名称 |
Polypropylene resin pre-foamed particle and method for producing same, and polypropylene resin in-mold foaming molded article |
摘要 |
Provided are polypropylene resin pre-foamed particles including, as base resin, polypropylene resin that satisfies the following requirements (a) through (c): (a) in cross fractionation chromatography, an amount of components eluted at a temperature of not more than 40� C. is not more than 2.0% by weight; (b) a melting point is not less than 100� C. but not more than 160� C.; and (c) propylene monomer units are present in an amount of not less than 90 mol % but not more than 100 mol %, and olefin units each having a carbon number of 2 or 4 or more are present in an amount of not less than 0 mol % but not more than 10 mol %. The polypropylene resin pre-foamed particles can be molded by in-mold foaming molding at a not high molding heating steam pressure, and a polypropylene resin in-mold foaming molded product excellent in dimensional stability at high temperatures can be prepared from the polypropylene resin pre-foamed particles. |
申请公布号 |
US8598241(B2) |
申请公布日期 |
2013.12.03 |
申请号 |
US201013146333 |
申请日期 |
2010.01.13 |
申请人 |
YOSHIDA TORU;TSUNEISHI HIROSHI;KANEKA CORPORATION |
发明人 |
YOSHIDA TORU;TSUNEISHI HIROSHI |
分类号 |
C08J9/16;B29C44/44;C08F4/44;C08F110/00;C08F210/00;C08J9/00;C08J9/18;C08J9/22 |
主分类号 |
C08J9/16 |
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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