Solution composition for steel sheet surface treatment, zinc-based plated steel sheet surface-treated with same, and manufacturing method therefor

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United States of America Patent

PATENT NO 11346003
APP PUB NO 20190264333A1
SERIAL NO

16309667

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Abstract

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Provided is a solution composition for steel sheet surface treatment, comprising 30 wt % to 60 wt % of a trivalent chromium compound containing chromium phosphate (A) and chromium nitrate (B); 0.2 wt % to 0.4 wt % of a rust-inhibiting and corrosion-resisting agent; 0.1 wt % to 0.3 wt % of a molybdenum-based compound; 5 wt % to 10 wt % of a water-soluble cationic urethane resin; 0.5 wt % to 2.0 wt % of a silane coupling agent; and 27.3 wt % to 64.2 wt % of water, a zinc-based plated steel sheet surface-treated with the same, and a manufacturing method therefor, the zinc-based plated steel sheet surface-treated with the solution composition for steel sheet surface treatment containing trivalent chromium may have an excellent effect on corrosion resistance, blackening resistance, fingerprint resistance, oil resistance, and alkali resistance.

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Patent Owner(s)

Patent OwnerAddress
NOROO COIL COATINGS CO LTDGYEONGSANGBUK-DO 37871
POSCO CO LTDPOHANG-SI GYEONGSANGBUK-DO 37859

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bae, Dae-Chul Pohang-si, KR 7 72
Cho, Soo-Hyoun Pohang-si, KR 14 25
Kim, Dong-Yun Anyang-si, KR 17 77
Park, Chang-Hyun Ansan-si, KR 15 29

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