The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2024
Filed:
Aug. 07, 2019
Applicants:
Posco, Pohang-si, KR;
Noroo Coil Coatings Co., Ltd., Pohang-si, KR;
Inventors:
Chang-Hoon Choi, Pohang-si, KR;
Dong-Yun Kim, Anyang-si, KR;
Won-Ho Son, Pohang-si, KR;
Hee-Jea Eun, Pohang-si, KR;
Jae-Duck Ko, Anyang-si, KR;
Assignees:
POSCO CO., LTD, Pohang-si, KR;
NOROO COIL COATINGS CO., LTD., Pohang-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D 4/06 (2006.01); C09D 4/00 (2006.01); C09D 5/08 (2006.01); C09D 7/20 (2018.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01);
U.S. Cl.
CPC ...
C09D 7/61 (2018.01); C09D 4/00 (2013.01); C09D 4/06 (2013.01); C09D 5/084 (2013.01); C09D 7/20 (2018.01); C09D 7/63 (2018.01); C09D 7/67 (2018.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01);
Abstract
Provided is a composition for steel sheet surface coating, the composition comprising colloidal silica, a silane, a monomer, an organic resin, an acidity adjuster, a long-term corrosion-resistance improver, and a solvent; and a steel sheet coated with the composition. The steel sheet has excellent acid resistance, and maintains thickness uniformity thereof even when exposed to an acid for an extended period of time.