METAL PRODUCT SURFACE-TREATED WITH ALKALI-SOLUBLE LUBRICATING FILM EXHIBITING EXCELLENT FORMABILITY AND EXCELLENT FILM REMOVAL PROPERTY BEING STABLE FOR A LONG TIME AND INDEPENDENT OF TEMPERATURE FOR DRYING FILM

Title:

Document Type and Number:

WIPO Patent Application WO/2002/078949

Kind Code:

A1

Abstract:

A metal product surface-treated with an alkali-soluble lubricating film, characterized in that one or both sides of the metal product are coated with an alkali-soluble lubricating film comprising, as main components, an aqueous composition containing an alkali-soluble polyurethane having a polyether polyol as a skeleton and containing a carboxyl group in the molecule thereof, and a lubricity-imparting agent in an amount of 1 to 30 mass % relative to the aqueous composition containing an alkali-soluble polyurethane, in a film thickness of 0.5 to 10 $g(m)m, and the film has a coefficient of elasticity of 0.5 to GPa at 25°C after coating. The metal product exhibits excellent formability and excellent film removal property which is stable for a long time and independent of the temperature for drying the film.

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Inventors:

YAMAOKA IKURO (JP)
KANAI HIROSHI (JP)
MIYASAKA AKIHIRO (JP)
MORI YOICHIRO (JP)
TAWA TSUTOMU (JP)
NISHIMURA MITSUHIRO (JP)
KOUDA CHIKAKO (JP)

Application Number:

PCT/JP2002/003232

Publication Date:

October 10, 2002

Filing Date:

March 29, 2002

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
MITSUI TAKEDA CHEMICALS INC (JP)
YAMAOKA IKURO (JP)
KANAI HIROSHI (JP)
MIYASAKA AKIHIRO (JP)
MORI YOICHIRO (JP)
TAWA TSUTOMU (JP)
NISHIMURA MITSUHIRO (JP)
KOUDA CHIKAKO (JP)

International Classes:

C08G18/08; C08G18/12; C08G18/48; C08G18/66; C08G18/75; C08G18/76; C09D175/04; C10M107/44; (IPC1-7): B32B15/08; B05D7/14; C23C22/00

Domestic Patent References:

WO2000023336A1	2000-04-27
WO2000050526A1	2000-08-31

Foreign References:

JP2000160096A	2000-06-13
JPH09254312A	1997-09-30
JPH08258214A	1996-10-08

Other References: