发明名称 |
Continuous preparation of melt-processable polyurethane in a twin screw extruder |
摘要 |
The invention relates to a process for the continuous preparation of melt-processable polyurethanes, wherein an isocyanate-terminated prepolymer is intensively mixed with chain extender at temperatures of <200° C., and the mixture obtained is converted to melt processable polyurethane in a twin screw extruder under quasi-adiabatic reaction conditions.
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申请公布号 |
US6294637(B1) |
申请公布日期 |
2001.09.25 |
申请号 |
US19980141132 |
申请日期 |
1998.08.27 |
申请人 |
BAYER AG |
发明人 |
BRäUER WOLFGANG;MüLLER FRIEDEMANN;WINKLER JüRGEN;HEIDINGSFELD HERBERT |
分类号 |
C08J5/18;B29C45/00;B29C47/00;B29K75/00;C08G18/08;C08G18/10;C08G18/66;C08L75/04;C09D175/04;D01F6/70;(IPC1-7):C08G18/10;C08G18/32;C08G18/38 |
主分类号 |
C08J5/18 |
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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