公开(公告)号：US20230091908A1

公开(公告)日：2023-03-23

申请号：US17788071

申请日：2020-12-16

申请人： Osaka Gas Chemicals Co., Ltd.

发明人： Koji KONISHI ,  Rie YASUDA ,  Shinsuke MIYAUCHI ,  Ibuki MOTOHIRO ,  Mayato MITSUZANE ,  Yuichiro YASUDA

IPC分类号： C07C69/52 ,  C07C67/08

摘要： The di(meth)acrylate compound of the present disclosure is represented by the following formula (1): wherein Z1a and Z1b each represent an arene ring, R1a and R1b each represent a substituent, k1 and k2 each denote an integer of not less than 0, m1 and m2 each denote an integer of 0 to 4, and at least one of m1 and m2 denotes 1 or more, R2a and R2b each represent a substituent, n1 and n2 each denote an integer of 0 to 4, m1+n1 and m2+n2 each denote 4 or less, A1a and A1b each represent a straight- or branched-chain alkylene group, A2a and A2b each represent a straight- or branched-chain alkylene group, p1 and p2 each denote an integer of not less than 0, and R3a and R3b each represent a hydrogen atom or a methyl group.
The di(meth)acrylate compound is a novel compound having a high refractive index.

公开(公告)号：US20210294013A1

公开(公告)日：2021-09-23

申请号：US17265569

申请日：2019-08-07

申请人： Osaka Gas Chemicals Co., Ltd.

发明人： Yoshiya OTA ,  Shinichi KAMEI ,  Shinsuke MIYAUCHI

IPC分类号： G02B5/30 ,  C08J5/18 ,  C08G63/672 ,  C08G63/83 ,  B29C55/00 ,  B29C55/04 ,  B29C55/12

摘要： Provided are a retardation film that has a high heat resistance, has excellent formability and handleability even in a single-layer structure, has a negative thickness-direction retardation Rth value, and is suitable as a negative A-plate or a positive C-plate and a method for producing the film. The retardation film is formed of a stretched film of a polyester resin, contains a unit (A1) represented by the formula (1) as a diol unit (A) and a unit (B1) represented by the formula (2a) or (2b) as a dicarboxylic acid unit (B), and is a negative A-plate or a positive C-plate. In the formulae, Z1 and Z2 represent an aromatic hydrocarbon ring, R1, R2a, R2b, R3a and R3b represent a substituent, k, p1 and p2 denotes an integer of 0 to 8, q denotes an integer of 0 to 4, m1, m2, n1 and n2 denotes an integer of not less than 0, A1a and A1b represents an alkylene group, and A2a, A2b and A3 represents a divalent hydrocarbon group.