公开(公告)号：EP3567071A1

公开(公告)日：2019-11-13

申请号：EP17890465.2

申请日：2017-12-25

申请人： Sumitomo Chemical Company, Limited

发明人： GOUDA Kenji ,  SUGIMURA Toshiaki ,  OHTOMO Shinji

IPC分类号： C08J3/12 ,  C08G75/23

摘要： A resin microparticle production method includes a step of pulverizing resin particles having a thermoplastic resin as a forming material and having a BET specific surface area of equal to or more than 5 m 2 /g using an impact type pulverizer

公开(公告)号：EP3385301A1

公开(公告)日：2018-10-10

申请号：EP16870259.5

申请日：2016-09-14

申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

发明人： YASUNAGA Tomokazu ,  OHTOMO Shinji ,  SUGIMURA Toshiaki

IPC分类号： C08G65/40 ,  C08G59/62 ,  C08G75/23

CPC分类号： C08L63/00 ,  C08G59/62 ,  C08G65/40 ,  C08G75/23 ,  C08J3/11 ,  C08L81/06

摘要： The present invention relates to a method for producing thermoplastic aromatic polysulfone resin, in which a polymerization reaction is performed in an organic solvent by using (A) a dihalogeno compound represented by Formula (I), (B) a divalent phenol represented by Formula (II) and (C) an alkali metal carbonate at a charging molar ratio satisfying the following Formulae (1) to (3): (1) 0.900
in Formulae (I) and (II), R 1 to R 4 represent an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, X and X' represent a halogen atom, Y represents one or more groups selected from the group consisting of -SO 2 -, -C(CH 3 ) 2 -, -CH 2 -, -O- and -CO-, or a single bond, and n1, n2, n3 and n4 represent an integer of 0 to 4.