	US 12,152,103 B2
	Copolymerized saturated polyester resin and coating composition containing same
Hyung-Gon Kim, Seongnam-si (KR); Jong-Ki Sim, Gunpo-si (KR); and Soon-Ki Kim, Suwon-si (KR)
Assigned to SK CHEMICALS CO., LTD., Seongnam-si (KR)
Appl. No. 16/966,966
Filed by SK CHEMICALS CO., LTD., Seongnam-si (KR)
PCT Filed Jan. 31, 2019, PCT No. PCT/KR2019/001353 § 371(c)(1), (2) Date Aug. 3, 2020, PCT Pub. No. WO2019/156426, PCT Pub. Date Aug. 15, 2019.
Claims priority of application No. 10-2018-0041988 (KR), filed on Feb. 7, 2018.
Prior Publication US 2021/0040261 A1, Feb. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 167/02 (2006.01); C08G 63/183 (2006.01); C08G 63/189 (2006.01); C09D 7/63 (2018.01)

CPC C08G 63/183 (2013.01) [C08G 63/189 (2013.01); C09D 7/63 (2018.01); C09D 167/02 (2013.01)]

15 Claims

1. A copolymerized saturated polyester resin, which is formed by polycondensation of an acid component and an alcohol component, and

has an intrinsic viscosity of 0.4 to 0.65 dl/g, a number average molecular weight of 12,000 to 20,000 g/mol, and a polydispersity index (PDI) of 3.0 to 5.0,

wherein the acid component comprises (a-1) 90 to 95% by mole of an aromatic dicarboxylic acid or a C_1-2alkyl ester thereof and (a-2) 0.5 to 1.5% by mole of a trifunctional or higher functional carboxylic acid or an anhydride thereof,

wherein the alcohol component comprises (b-1) 20 to 55% by mole of an alicyclic polyhydric alcohol and (b-2) 45 to 80% by mole of an aliphatic polyhydric alcohol having a C_1-3alkyl side chain, and

wherein the alicyclic polyhydric alcohol (b-1) is one or more selected from the group consisting of cyclohexane dimethanol, tricyclodecane dimethanol, and isosorbide.