发明授权
- 专利标题： Controlled degradation
- 专利标题（中）： 控制退化
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申请号： US3551943D申请日： 1966-12-19
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公开(公告)号： US3551943A公开(公告)日： 1971-01-05
- 发明人: STATON JOHN C , KELLER JAMES P , KOWALSKI RONALD C , HARRISON JOHN W
- 申请人： EXXON RESEARCH ENGINEERING CO
- 专利权人： Bayer AG
- 当前专利权人： Bayer AG
- 优先权： US60267666 1966-12-19
- 主分类号： B29C47/92
- IPC分类号： B29C47/92 ; C08F8/06 ; C08F8/50 ; B29F3/08
摘要：
A SYSTEM FOR THE CONTROLLED SCISSION OF POLYPROPYLENE COMPRISES AN EXTRUDER-REACTOR, MEANS FOR MEASURING A PARAMETER OF MOLECULAR WEIGHT OF POLYPROPYLENE AFTER PASSING THROUGH THE EXTRUDER-REACTOR, AND FEEDBACK MEANS FOR CHANGING THE CONDITIONS IN THE EXTRUDER-REACTOR IN RESPONSE TO THE PARAMETER OF MOLECULAR WEIGHT MEASURED. THIS SYSTEM MAY CONTAIN A PELLETIZER AND A CONTINUOUS RHEOMETER WHICH MEASURES THE PARAMETER OF MOLECULAR WEIGHT OF THE PELLETIZED POLYPROPYLENE.
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