公开(公告)号：US11312823B2

公开(公告)日：2022-04-26

申请号：US16622964

申请日：2018-06-26

申请人： DIC Corporation

发明人： Masaya Kadoki ,  Saori Nara ,  Taku Ibaraki ,  Hideki Watanabe ,  Satoshi Inoue

IPC分类号： C08G75/0259 ,  C08G75/0213 ,  C08G75/0254 ,  C08J3/20 ,  C08J5/00

摘要： Provided is a method for producing a polyarylene sulfide resin, the method including subjecting a dihaloaromatic compound and a sulfidizing agent to a polymerization reaction in the presence of an aliphatic cyclic compound having a ring openable by hydrolysis, in which corrosion of a production apparatus is suppressed. More particularly, provided is a method for producing a polyarylene sulfide resin, the method including a dehydration step (1) in which a water-containing sulfidizing agent and an aliphatic cyclic compound having a ring openable by hydrolysis are heated in the presence of a dihaloaromatic compound to a liquid temperature in the range of 90° C. or higher and 170° C. or lower under the atmospheric pressure, and then dehydration is performed while maintaining the liquid temperature and reducing the pressure to a pressure in the range of 30 [kPa abs] or higher and 80 [kPa abs] or lower to thus obtain a mixture.

公开(公告)号：US20210147630A1

公开(公告)日：2021-05-20

申请号：US16622964

申请日：2018-06-26

申请人： DIC Corporation

发明人： Masaya Kadoki ,  Saori Nara ,  Taku Ibaraki ,  Hideki Watanabe ,  Satoshi Inoue

IPC分类号： C08G75/0259 ,  C08G75/0254 ,  C08G75/0213 ,  C08J5/00 ,  C08J3/20

摘要： Provided is a method for producing a polyarylene sulfide resin, the method including subjecting a dihaloaromatic compound and a sulfidizing agent to a polymerization reaction in the presence of an aliphatic cyclic compound having a ring openable by hydrolysis, in which corrosion of a production apparatus is suppressed. More particularly, provided is a method for producing a polyarylene sulfide resin, the method including a dehydration step (1) in which a water-containing sulfidizing agent and an aliphatic cyclic compound having a ring openable by hydrolysis are heated in the presence of a dihaloaromatic compound to a liquid temperature in the range of 90° C. or higher and 170° C. or lower under the atmospheric pressure, and then dehydration is performed while maintaining the liquid temperature and reducing the pressure to a pressure in the range of 30 [kPa abs] or higher and 80 [kPa abs] or lower to thus obtain a mixture.