FILM FORMATION COMPOSITION FOR PREVENTING BLACKENING OF STEEL SHEET, AND STEEL SHEET HAVING FILM FORMED BY COMPOSITION

Title:

FILM FORMATION COMPOSITION FOR PREVENTING BLACKENING OF STEEL SHEET, AND STEEL SHEET HAVING FILM FORMED BY COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2012/134179

Kind Code:

A2

Abstract:

The present invention relates to 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 a 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, wherein the steel sheet is a magnesium sheet comprising magnesium on the surface thereof or a steel sheet having a plated layer containing magnesium, a steel sheet comprising a film formed by the composition, and a method for forming the film.

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Inventors:

KWAK YOUNG-JIN (KR)
KIM DONG-YUN (KR)
JUNG WOO-SUNG (KR)
NAM KYUNG-HOON (KR)
LEE DONG-YOEUL (KR)
HONG SEOK-JUN (KR)
KIM TAE-YEOB (KR)
JUNG YONG-HWA (KR)
EOM MUN-JONG (KR)
CHOI MYOUNG-HEE (KR)
KIM GAB-YONG (KR)
PARK SANG-HOON (KR)
LEE SANG-CHEOL (KR)
NAM YANG-WOO (KR)

Application Number:

PCT/KR2012/002294

Publication Date:

October 04, 2012

Filing Date:

March 28, 2012

Export Citation:

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Assignee:

POSCO (KR)
NOROO COIL COATINGS CO LTD (KR)
KWAK YOUNG-JIN (KR)
KIM DONG-YUN (KR)
JUNG WOO-SUNG (KR)
NAM KYUNG-HOON (KR)
LEE DONG-YOEUL (KR)
HONG SEOK-JUN (KR)
KIM TAE-YEOB (KR)
JUNG YONG-HWA (KR)
EOM MUN-JONG (KR)
CHOI MYOUNG-HEE (KR)
KIM GAB-YONG (KR)
PARK SANG-HOON (KR)
LEE SANG-CHEOL (KR)
NAM YANG-WOO (KR)

International Classes:

C23C26/00; C09D5/08; C09D7/61; C09D171/12

Foreign References:

KR20070082367A	2007-08-21
US7754799B2	2010-07-13
JPH09241828A	1997-09-16
JPH07143679A	1995-06-02

Other References: