发明名称 |
Propylene-base random copolymer particles and production process thereof |
摘要 |
Disclosed herein are propylene-base random copolymer particles suitable for use in the production of pre-foamed particles. The copolymer particles are obtained by heating starting copolymer particles to the crystallization temperature thereof and then quenching them in a medium of (the crystallization temperature-30 DEG C.) or lower. Processes for obtaining the copolymer particles are also disclosed. Pre-foamed particles produced using the copolymer particles contain large cells. They can thus provide foamed moldings which are substantially free of shrinkage and have good flexibility.
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申请公布号 |
US4602082(A) |
申请公布日期 |
1986.07.22 |
申请号 |
US19850795431 |
申请日期 |
1985.11.06 |
申请人 |
JAPAN STYRENE PAPER CORPORATION |
发明人 |
AKIYAMA, HIROYUKI;IZAWA, SUSUMU;KUWABARA, HIDEKI |
分类号 |
C08J9/16;B29B9/00;B29B9/06;B29K23/00;C08J3/00;C08J9/18;(IPC1-7):C08F6/00 |
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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