The Webb Law Firm
Film formation composition for preventing blackening of steel sheet, and steel sheet having film formed by composition
Provided is a film formation composition for improving the blackening of the surface of a steel sheet, particularly, the surface of a steel sheet containing Mg on the surface thereof, such as a Mg sheet, a plated steel sheet having a plated layer comprising Mg, and the like, a steel sheet comprising a film formed by the composition, and a method for forming the film. Provided are a film formation composition for preventing the blackening of the surface of the steel sheet, comprising: 2.5-7.5 parts by weight of a water-soluble phenoxy resin; 0.1-0.5 parts by weight of a fluorometal acid; 0.1-0.5 parts by weight of a metal compound; and 1-5 parts by weight of a cross-linking agent.
NOROO COIL COATINGS CO., LTD. POSCO
Y C C C C C C C C
Y10T C08K C08G C09D C09D C23C C09D C08K C23C
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Woo-Sung Yang-Woo Yong-Hwa Tae-Yeob Dong-Yun Young-Jin Dong-Yoeul Mun-Jong Seok-Jun Gab-Yong Kyung-Hoon Myoung-Hee Sang-Hoon Sang-Cheol
Jung Nam Jung Kim Kim Kwak Lee Eom Hong Kim Nam Choi Park Lee