US 12,252,623 B2
Bio-paint composition having improved hydrolysis resistance and method of preparing same
Ji Won Lee, Seoul (KR); Jae Beom Ahn, Anyang-si (KR); Soon Gi Kim, Cheonan-si (KR); and Sung Kyu Lee, Cheonan-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Noroo Automotive Coatings Co., Ltd., Hwaseong-si (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and NOROO BEE CHEMICAL CO., LTD., Cheonan-si (KR)
Filed on Dec. 9, 2021, as Appl. No. 17/546,864.
Claims priority of application No. 10-2021-0051609 (KR), filed on Apr. 21, 2021.
Prior Publication US 2022/0356368 A1, Nov. 10, 2022
Int. Cl. C08F 220/40 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/75 (2006.01); C08L 33/12 (2006.01); C09D 133/12 (2006.01)
CPC C09D 133/12 (2013.01) [C08F 220/40 (2013.01); C08G 18/4018 (2013.01); C08G 18/42 (2013.01); C08G 18/4829 (2013.01); C08G 18/755 (2013.01); C08L 33/12 (2013.01); C08L 2205/03 (2013.01)] 18 Claims
 
1. A bio-paint composition comprising:
a biomass polyurethane;
at least one acrylic resin; and
an additive,
wherein the at least one acrylic resin comprises a first acrylic resin having a hydroxyl content of 2% to 3% and a glass transition temperature of 85° C. to 90° C.; and a second acrylic resin having a hydroxyl content of 3% to 4% and a glass transition temperature of 80° C. to 85° C., wherein the first acrylic resin and second acrylic resin are not the same resin.