发明名称 |
Preparation of expandable propylene polymer beads |
摘要 |
A process prepares expandable propylene polymer beads by mixing propylene polymer melt with a volatile organic blowing agent and with a nucleating agent in an extruder, whereupon the extrusion and pelletization of the extrudate takes place in a water bath under conditions of temperature and pressure at which practically no foaming of the pellets takes place.
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申请公布号 |
US2002185768(A1) |
申请公布日期 |
2002.12.12 |
申请号 |
US20010042708 |
申请日期 |
2001.11.05 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
MALETZKO CHRISTIAN;HAHN KLAUS;DE GRAVE ISIDOR;EHRMANN GERD;DIETZEN FRANZ-JOSEF |
分类号 |
C08J3/12;C08J9/16;C08K3/00;C08K5/00;C08L23/10;(IPC1-7):B29C44/02 |
主分类号 |
C08J3/12 |
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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