US 12,297,370 B2
Undercoat paint composition
Se Jun Shin, Busan (KR); Sang Hyeak Yoon, Seoul (KR); Soon Jong Park, Ulsan (KR); Chi Uk Kim, Ulsan (KR); Jong Yun Park, Ulsan (KR); Dong Geon Kim, Ulsan (KR); Ick Jae Cho, Ulsan (KR); and Hyuk Jeong, Seoul (KR)
Assigned to KCC Corporation, Seoul (KR)
Appl. No. 17/615,458
Filed by KCC Corporation, Seoul (KR)
PCT Filed Apr. 9, 2020, PCT No. PCT/KR2020/004797
§ 371(c)(1), (2) Date Nov. 30, 2021,
PCT Pub. No. WO2020/251153, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 10-2019-0070821 (KR), filed on Jun. 14, 2019; and application No. 10-2019-0103160 (KR), filed on Aug. 22, 2019.
Prior Publication US 2022/0228021 A1, Jul. 21, 2022
Int. Cl. C09D 167/02 (2006.01); C08G 63/00 (2006.01); C08G 63/183 (2006.01); C08G 63/20 (2006.01); C08G 63/91 (2006.01); C08K 3/04 (2006.01); C08K 3/22 (2006.01); C08K 3/34 (2006.01); C09D 7/61 (2018.01)
CPC C09D 167/02 (2013.01) [C08G 63/183 (2013.01); C08G 63/20 (2013.01); C08G 63/916 (2013.01); C08K 3/04 (2013.01); C08K 3/22 (2013.01); C08K 3/34 (2013.01); C09D 7/61 (2018.01); C08K 2003/2241 (2013.01); C08K 2003/343 (2013.01)] 20 Claims
 
1. An undercoat paint composition comprising an acid-modified polyester-based resin, a pigment, and a solvent,
wherein the acid-modified polyester-based resin is a polyester-based resin modified with one or more acids selected from the group consisting of organic acids and inorganic acids, and
the undercoat paint composition comprises 40 to 55 parts by weight of an acid-modified polyester-based resin, 3 to 25 parts by weight of a pigment, and 25 to 40 parts by weight of a solvent.