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公开(公告)号:US5808169A
公开(公告)日:1998-09-15
申请号:US912750
申请日:1997-08-18
申请人: Hirofumi Aizono , Takeshi Kouchi , Kazuto Hironaga
发明人: Hirofumi Aizono , Takeshi Kouchi , Kazuto Hironaga
IPC分类号: B01J23/30 , B01J27/18 , B01J27/182 , B01J27/188 , C07B61/00 , C07C2/66 , C07C2/70 , C07C7/14 , C07C15/02
CPC分类号: C07C15/02 , C07C2/66 , C07C7/14 , B01J27/1813 , B01J27/182 , B01J27/188 , Y02P20/52
摘要: A process for preparing 1,2,4,5-dimethyldiisopropylbenzene includes conducting alkylation of p-xylene with propylene to produce an alkylation product, and crystallizing the alkylation product. A heteropolyacid-supported catalyst can be used as an alkylation catalyst for the reaction. The reaction solution produced from the alkylation reaction can be distilled before crystallization to improve yield and purity even more.
摘要翻译: 制备1,2,4,5-二甲基二异丙基苯的方法包括用丙烯进行对二甲苯的烷基化以产生烷基化产物,并使烷基化产物结晶。 可以使用杂多酸负载催化剂作为反应的烷基化催化剂。 从烷基化反应生成的反应溶液可以在结晶前进行蒸馏,甚至提高产率和纯度。