发明授权
- 专利标题： Controlled degradation of polypropylene in extruder-reactor
- 专利标题（中）： 挤出反应器中聚丙烯的控制降解
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申请号： US3608001D申请日： 1969-08-26
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公开(公告)号： US3608001A公开(公告)日： 1971-09-21
- 发明人: KOWALSKI RONALD C , HARRISON JOHN W , STATON JOHN C , KELLER JAMES P
- 申请人： EXXON RESEARCH ENGINEERING CO
- 专利权人： ExxonMobil Research and Engineering Co
- 当前专利权人： ExxonMobil Research and Engineering Co
- 优先权： US85301769 1969-08-26
- 主分类号： B29C47/92
- IPC分类号： B29C47/92 ; B29F3/00
摘要：
A process for producing in a reproducible, predictable and controllable manner a polypropylene having a desired weight average molecular weight and molecular weight distribution by heating the polypropylene in an extruder-reactor, sampling a portion of the polypropylene to measure a parameter of molecular weight and controlling the conditions in the extruder-reactor in response to the measured parameter.
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