专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06284931B1 Process for producing 3, 3, 5-trimethylcyclohexylidenebisphenol 有权
标题翻译：制备3,3,5-三甲基亚环己基双酚的方法
公开(公告)号：US06284931B1
公开(公告)日：2001-09-04
申请号：US09421372
申请日：1999-10-20
申请人： Yoichiro Isota , Toru Nakaguchi , Hiroshi Takenaka , Kazuhiko Yao
发明人： Yoichiro Isota , Toru Nakaguchi , Hiroshi Takenaka , Kazuhiko Yao
IPC分类号： C07L3917
CPC分类号： C08G64/06 , C07C37/20 , C07C2601/14 , C08G75/23 , C07C39/17
摘要： A process for producing a 3,3,5-trimethylcyclohexylidenebisphenol, comprising pre-reacting a phenol (A), i.e., phenol whose 2- and 6-positions may be monosubstituted or disubstituted with an alkyl group having 1 to 4 carbon atoms, with 3,3,5-trimethylcyclohexanone (B) at a molar ratio ((A)/(B)) of 3 to 7 in the presence of an acid catalyst until 3,3,5-trimethylcyclohexanone (B) exhibits a degree of conversion of at least 90 mol %; adding the phenol (A) and/or an aromatic hydrocarbon (C) to the thus obtained reaction mixture; and post-reacting the resultant mixture. This process enables not only suppressing a rise of the viscosity of the reaction mixture but also obtaining the desired product at high yield. Therefore, this process is applicable to not only the productivity enhancement in batch processing but also a continuous reaction processing which has been regarded as being difficult.
摘要翻译：一种制备3,3,5-三甲基亚环己基双酚的方法，包括将苯酚（A）即其2-和6-位可以被具有1至4个碳原子的烷基单取代或二取代的苯酚预反应，（A）/（B））的摩尔比为3至7的3,3,5-三甲基环己酮（B）在酸催化剂存在下直至3,3,5-三甲基环己酮（B）显示出转化程度至少90mol％; 向由此得到的反应混合物中加入苯酚（A）和/或芳族烃（C）; 并使所得混合物反应。该方法不仅可以抑制反应混合物的粘度上升，而且能够以高收率得到所需的产物。因此，该方法不仅适用于分批处理的生产率提高，而且适用于被认为难以进行的连续反应处理。

IPRDB

热门服务

关于我们

友情链接

联系方式