US 12,454,623 B2
Matting agent-free matte metallic steel sheet for home appliance and refrigerators including the same
Choongkeon Kim, Suwon-si (KR); Youngdeog Koh, Suwon-si (KR); Kwangjoo Kim, Suwon-si (KR); Yonghwan Kim, Suwon-si (KR); Dahyun Byeon, Suwon-si (KR); and Seok Rhee, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Sep. 8, 2023, as Appl. No. 18/243,748.
Application 18/243,748 is a continuation of application No. PCT/KR2023/012320, filed on Aug. 21, 2023.
Claims priority of application No. 10-2022-0151060 (KR), filed on Nov. 11, 2022; and application No. 10-2023-0004332 (KR), filed on Jan. 11, 2023.
Prior Publication US 2024/0158648 A1, May 16, 2024
Int. Cl. C09D 7/61 (2018.01); C09D 5/00 (2006.01); C09D 133/04 (2006.01); C09D 167/00 (2006.01); F25D 23/02 (2006.01)
CPC C09D 7/61 (2018.01) [C09D 5/002 (2013.01); C09D 133/04 (2013.01); C09D 167/00 (2013.01); F25D 23/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A matting agent-free matte metallic steel sheet for a home appliance comprising:
a steel sheet;
a primer layer formed on the steel sheet;
a basecoat layer formed on the primer layer;
a print layer formed on the basecoat layer; and
a clearcoat layer formed on the print layer,
wherein the clearcoat layer comprises an acrylic resin having a weight average molecular weight (Mw) range of 70,000 to 100,000,
wherein the matting agent-free matte metallic steel sheet has a gloss measurement at 60° in a range of 72 to 75, and
wherein the matting agent-free matte metallic steel sheet has a brightness reduction rate that is less than or equal to 5% while maintaining light transmission and reflection from the basecoat layer.