Title:
LUBRICATING AQUEOUS POLYURETHANE RESIN COMPOSITION, METHOD FOR LUBRICATING SURFACE OF ZINC-PLATED STEEL SHEET USING SAME, AND SURFACE-TREATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2005/071052
Kind Code:
A1
Abstract:
Disclosed is an aqueous polyurethane resin composition for forming a coating film over a zinc-plated steel sheet which film is excellent in corrosion resistance, alkali resistance, coating adhesiveness and lubricity. The aqueous polyurethane resin composition contains (a) a polyurethane resin having a polyester skeleton part and a polyether skeleton part, a tensile strength at break of not less than 3.92 kN/cm2 (JIS 7113), a tensile elongation at break of not more than 50%, and a glass transition temperature of 80-150&ring C (Tg, JIS K 7121); (b) fine polyolefin resin particles having a melting point of 70-160&ring C and a particle diameter of 0.5-5 μm; and (c) a colloidal silica having a particle diameter of 5-50 nm. Relative to the mass of the total solid content (a + b + c), the solid content of the component (a) is 50-93 mass%, the solid content of the component (b) is 2-20 mass%, and the solid content of the component (c) is 5-40 mass%.
Inventors:
MORISHITA ATSUSHI (JP)
TAKAHASHI AKIRA (JP)
MIYAUCHI YUJIRO (JP)
KANAI HIROSHI (JP)
KINOSHITA YASUHIRO (JP)
SAKO RYOSUKE (JP)
UENO KEICHI (JP)
TAKAHASHI AKIRA (JP)
MIYAUCHI YUJIRO (JP)
KANAI HIROSHI (JP)
KINOSHITA YASUHIRO (JP)
SAKO RYOSUKE (JP)
UENO KEICHI (JP)
Application Number:
PCT/JP2005/001287
Publication Date:
August 04, 2005
Filing Date:
January 24, 2005
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
NIHON PARKERIZING (JP)
MORISHITA ATSUSHI (JP)
TAKAHASHI AKIRA (JP)
MIYAUCHI YUJIRO (JP)
KANAI HIROSHI (JP)
KINOSHITA YASUHIRO (JP)
SAKO RYOSUKE (JP)
UENO KEICHI (JP)
NIHON PARKERIZING (JP)
MORISHITA ATSUSHI (JP)
TAKAHASHI AKIRA (JP)
MIYAUCHI YUJIRO (JP)
KANAI HIROSHI (JP)
KINOSHITA YASUHIRO (JP)
SAKO RYOSUKE (JP)
UENO KEICHI (JP)
International Classes:
B32B15/095; C08G18/40; C09D175/04; C10M103/00; C10M107/02; C10M107/44; C10M125/26; C10M143/00; C10M149/14; C10M173/02; C23C2/26; C23C28/00; C23C30/00; C10N20/00; C10N20/06; C10N30/06; C10N30/12; C10N40/20; (IPC1-7): C10M173/02; C08L75/04; B32B15/08; C23C26/00
Foreign References:
| JPH06145559A | 1994-05-24 | |||
| JPH06173037A | 1994-06-21 | |||
| JP2000239690A | 2000-09-05 | |||
| JP2003055776A | 2003-02-26 | |||
| JP2002012885A | 2002-01-15 | |||
| JPH01301332A | 1989-12-05 | |||
| JPH0711089A | 1995-01-13 | |||
| JP2002144478A | 2002-05-21 | |||
| JP2003003278A | 2003-01-08 |
Attorney, Agent or Firm:
Aoki, Atsushi (Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chom, Minato-ku Tokyo 23, JP)
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