发明名称 |
Process for producing unsaturated group-terminated isobutylene polymer |
摘要 |
The present invention provides a novel halogen-free solvent system which can produce a good isobutylene polymer and can be easily reused. A novel process for the production of an isobutylene polymer is provided which comprises using a hydrocarbon solvent having a boiling point of not lower than 105 DEG C. and a melting point of not higher than -90 DEG C. Heretofore, a solvent system containing a halogenated hydrocarbon such as methylene chloride has been used for the production of an isobutylene polymer. However, such a solvent system has a great adverse effect on the environment. Therefore, a non-halogenated solvent is desirable. The present invention is characterized by the use of a hydrocarbon solvent as a reaction solvent. The resulting polymer has good properties. Further, compounds which are produced as by-products during the reaction can be easily removed, enabling the recycling of the solvent used. Thus, the production cost can be reduced.
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申请公布号 |
US5811501(A) |
申请公布日期 |
1998.09.22 |
申请号 |
US19960671198 |
申请日期 |
1996.06.27 |
申请人 |
KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
CHIBA, TAKESHI;FUJISAWA, HIROSHI;YAMANAKA, YOSHIMICHI;DEGUCHI, YOSHIKUNI;YONEZAWA, KAZUYA |
分类号 |
C08F2/06;C08F10/10;(IPC1-7):C08F2/06 |
主分类号 |
C08F2/06 |
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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