Invention Grant
US3726848A Polymerisation of styrene and related monomers using a two stage continuous heating cycle
失效
使用两段连续加热循环的苯乙烯和相关单体的聚合
- Patent Title: Polymerisation of styrene and related monomers using a two stage continuous heating cycle
- Patent Title (中): 使用两段连续加热循环的苯乙烯和相关单体的聚合
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Application No.: US3726848DApplication Date: 1970-06-09
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Publication No.: US3726848APublication Date: 1973-04-10
- Inventor: SQUIRE J , GAMMON G
- Applicant: BRITISH PETROLEUM CO
- Assignee: BP PLC
- Current Assignee: BP PLC
- Priority: DE1953885 1969-10-25; FR7010693 1970-03-25; GB2043168 1968-04-30; JP2972170 1970-04-07; NL7001096 1970-01-27; US4489270 1970-06-09
- Main IPC: C08F2/00
- IPC: C08F2/00 ; C08F2/18 ; C08F2/36 ; C08F4/00 ; C08F4/28 ; C08F12/04 ; C08F7/04 ; C08F7/06
Abstract:
A VINYL AROMATIC MONOMER IS POLYMERISED WITH TWO INITIATORS OF DIFFERENT HALF LIVES USING A TWO STAGE CONTINUOUS TEPERATURE RISE. THE TEMPERATURE CYCLE IS AN INITIAL INCREASE TO 105-125*C. IN LESS THAN 1 HOUR AND A FURTHER RISE TO BETWEEN 1300 AND 150*C. IN UP TO AN HOUR OR MORE.
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