US 12,378,364 B2
Polysiloxane-polycarbonate copolymer using hydroxy-terminated polysiloxane mixture, and method for producing same
Yun Ju Chang, Daejeon (KR); Kyung Moo Shin, Chilgok-gun (KR); Ki Tae Kang, Gimpo-si (KR); Mi Ran Kim, Daejeon (KR); Seung Pil Jung, Gwangju-si (KR); Jin Sik Choi, Daejeon (KR); and Seong Hyen Heo, Sejong-si (KR)
Assigned to SAMYANG CORPORATION, Seoul (KR)
Appl. No. 17/917,278
Filed by SAMYANG CORPORATION, Seoul (KR)
PCT Filed Apr. 22, 2021, PCT No. PCT/KR2021/005079
§ 371(c)(1), (2) Date Oct. 6, 2022,
PCT Pub. No. WO2021/215838, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 10-2020-0049940 (KR), filed on Apr. 24, 2020.
Prior Publication US 2023/0295381 A1, Sep. 21, 2023
Int. Cl. C08G 77/448 (2006.01); C08G 64/18 (2006.01); C08G 77/458 (2006.01); C08L 83/10 (2006.01)
CPC C08G 77/448 (2013.01) [C08G 64/186 (2013.01); C08G 77/458 (2013.01); C08L 83/10 (2013.01)] 13 Claims
 
1. A polysiloxane-polycarbonate copolymer comprising:
as repeating units, a hydroxyl-terminated polysiloxane of the following chemical formula 1; a hydroxyl-terminated polysiloxane of the following chemical formula 2; and a polycarbonate block;
wherein total 100 parts by weight of the hydroxyl-terminated polysiloxanes of chemical formulas 1 and 2 consists of 1 to 39 parts by weight of the hydroxyl-terminated polysiloxane of chemical formula 1 and 61 to 99 parts by weight of the hydroxyl-terminated polysiloxane of chemical formula 2:

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry
wherein: in the above chemical formulas 1 and 2,
each R1 independently represents hydrogen atom, halogen atom, hydroxy group, an alkyl group, an alkoxy group, or an aryl group;
each R2 independently represents a hydrocarbon group having 1 to 13 carbon atoms, or hydroxy group;
each R3 independently represents an alkylene group having 2 to 8 carbon atoms;
A represents a substituted or unsubstituted divalent hydrocarbon group comprising one or more groups selected from ester group, ether group, thioether group, ketone group or urethane group;
l represents an integer of 0 to 4; and
each of m and n independently represents an integer of 2 to 1,000.