发明授权
- 专利标题： Method of separating and recovering alkenylbenzenes and unreacted alkylbenzenes from the alkenylation reaction product
- 专利标题（中）： 从烯基化反应产物中分离和回收烯基苯和未反应的烷基苯的方法
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申请号： US581052申请日： 1975-05-27
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公开(公告)号： US3954895A公开(公告)日： 1976-05-04
- 发明人: Takeo Shima , Michiyuki Tokashiki , Kazumi Iwata
- 申请人： Takeo Shima , Michiyuki Tokashiki , Kazumi Iwata
- 申请人地址： JA Osaka
- 专利权人： Teijin Limited
- 当前专利权人： Teijin Limited
- 当前专利权人地址： JA Osaka
- 主分类号： C07C2/72
- IPC分类号： C07C2/72 ; C07C7/04 ; C07C3/52
摘要：
In the method wherein an alkenylation reaction product liquid obtained by the alkenylation reaction of an alkylbenzene and a C.sub.4 - C.sub.5 conjugated diene in the presence of alkali metal catalysts and containing unreacted alkylbenzene, alkali metal catalysts and organo-alkalimetal compounds is conveyed to a distillation zone at which said alkenylation reaction product liquid is separated by distillation to recover an alkenylbenzene-containing fraction and an unreacted alkylbenzene-containing fraction, the improvement which comprises adjusting the total of the concentrations of said alkali metal catalysts and organo-alkalimetal compounds in said alkenylation reaction product liquid introduced to the distillation zone so as to be 0.09 - 15 milligram atoms per kilogram of said product liquid, calculated as alkalimetal atoms, and thereafter conducting the distillation of said product liquid under conditions of non-addition of alcohols.
公开/授权文献
- US5722962A Trocar port filter 公开/授权日：1998-03-03
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