Invention Grant
US08193287B2 Process for brominating butadiene copolymers by the addition of water or certain solvents
有权
通过加入水或某些溶剂来溴化丁二烯共聚物的方法
- Patent Title: Process for brominating butadiene copolymers by the addition of water or certain solvents
- Patent Title (中): 通过加入水或某些溶剂来溴化丁二烯共聚物的方法
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Application No.: US12866992Application Date: 2009-02-25
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Publication No.: US08193287B2Publication Date: 2012-06-05
- Inventor: David B. Gorman
- Applicant: David B. Gorman
- Applicant Address: US MI Midland
- Assignee: Dow Global Technologies LLC
- Current Assignee: Dow Global Technologies LLC
- Current Assignee Address: US MI Midland
- Agency: Gary C Cohn PLLC
- International Application: PCT/US2009/035046 WO 20090225
- International Announcement: WO2009/139942 WO 20091119
- Main IPC: C08F8/20
- IPC: C08F8/20
Abstract:
Butadiene copolymers are brominated using certain quaternary ammonium tribromides as the brominating agent. The bromination process proceeds easily under mild conditions, and produces a brominated product that has excellent thermal stability. A quaternary ammonium monobromide salt is produced as a reaction by-product. A solvent for the monobromide salt is added to the reaction after 25-90% bromination of the aliphatic carbon-carbon double bonds. This provides for significantly shorter reaction times while providing a product with few impurities.
Public/Granted literature
- US20110021715A1 PROCESS FOR BROMINATING BUTADIENE COPOLYMERS BY THE ADDITION OF WATER OR CERTAIN SOLVENTS Public/Granted day:2011-01-27
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