US 11,732,088 B2
Polyester carbonate resin and optical lens
Manabu Hirakawa, Kanagawa (JP); Noriyuki Kato, Tokyo (JP); Eiichi Honda, Kanagawa (JP); Yasuaki Yoshimura, Kanagawa (JP); and Yuichiro Satake, Kanagawa (JP)
Assigned to MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP)
Appl. No. 17/283,747
Filed by MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP)
PCT Filed Oct. 8, 2019, PCT No. PCT/JP2019/039690
§ 371(c)(1), (2) Date Apr. 8, 2021,
PCT Pub. No. WO2020/080199, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018-195283 (JP), filed on Oct. 16, 2018.
Prior Publication US 2021/0347937 A1, Nov. 11, 2021
Int. Cl. C08G 63/64 (2006.01); C08G 63/85 (2006.01); G02B 1/04 (2006.01)
CPC C08G 63/64 (2013.01) [C08G 63/85 (2013.01); G02B 1/041 (2013.01)] 7 Claims
 
1. A polyester carbonate resin comprising a constituent unit represented by the following general formula (1), a constituent unit represented by the following general formula (2), and a constituent unit represented by the following general formula (3):

OG Complex Work Unit Chemistry
wherein R represents hydrogen or an alkyl group containing 1 to 4 carbon atoms,

OG Complex Work Unit Chemistry
wherein Q represents the following:

OG Complex Work Unit Chemistry
wherein n and m each independently represent an integer of 0 to 5, and

OG Complex Work Unit Chemistry