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Title:
WATER-BASED SURFACE-TREATING AGENT FOR PLATED METAL SHEET, SURFACE-TREATED METAL SHEET, AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2002/066703
Kind Code:
A1
Abstract:
A water-based surface-treating agent which comprises an acrylic resin, water, and colloidal silica having a solid concentration of 5 to 35 wt.%, characterized in that the acrylic resin is a polymer having a glass transition temperature of 0 to 30°C obtained by polymerizing (a) 15 to 76 wt.% unsaturated (meth)acrylic ester monomer represented by the following general formula (1) (1) (wherein R?1¿ is hydrogen or methyl and R?2¿ is C¿1-8? linear or branched alkyl), (b) 2 to 10 wt.% a, $g(b)-ethylenically unsaturated monomer having a carboxyl group in the molecule, (c) 2 to 10 wt.% $g(a), $g(b)-ethylenically unsaturated monomer having a hydroxyl group in the molecule, (d) 10 to 30 wt.% styrene, (e) 10 to 30 wt.% acrylonitrile, and (f) 0 to 10 wt.% unsaturated monomer copolymerizable with these monomers. Also provided is a surface-treated metallic material produced with the agent.

Inventors:
Yoshida, Kengo (C/O NIPPON STEEL CORPORATION KIMITU WORKS 1, Kimitsu Kimitsu-shi, Chiba, 299-1193, JP)
Morishita, Atsushi (C/O NIPPON STEEL CORPORATION KIMITU WORKS 1, Kimitsu Kimitsu-shi, Chiba, 299-1193, JP)
Miyauchi, Yujiro (C/O NIPPON STEEL CORPORATION KIMITSU WORKS 1, Kimitsu Kimitsu-shi, Chiba, 299-1193, JP)
Takahashi, Akira (C/O NIPPON STEEL CORPORATION KIMITSU WORKS 1, Kimitsu Kimitsu-shi, Chiba, 299-1193, JP)
Ueno, Keiichi (C/O NIHON PARKERIZING CO, LTD. 1-15-1 Nihonbashi Chuo-ku, Tokyo, 103-0027, JP)
Sako, Ryosuke (C/O NIHON PARKERIZING CO, LTD. 1-15-1 Nihonbashi Chuo-ku, Tokyo, 103-0027, JP)
Application Number:
PCT/JP2002/001632
Publication Date:
August 29, 2002
Filing Date:
February 22, 2002
Export Citation:
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Assignee:
NIPPON STEEL CORPORATION (6-3 Otemachi 2-chome Chiyoda-ku, Tokyo, Tokyo, 100-8071, JP)
NIHON PARKERIZING CO., LTD. (15-1, Nihonbashi 1-chome Chuo-ku, Tokyo, 103-0027, JP)
International Classes:
B32B15/08; B32B15/082; C09D133/00; C23C22/24; C23C22/83; C23C26/00; C23C28/00; C23C30/00; C25D11/38; (IPC1-7): C23C26/00
Foreign References:
JPH0427538A1992-01-30
Attorney, Agent or Firm:
Ishida, Takashi (A. AOKI, ISHIDA & ASSOCIATES Toranomon 37 Mori Bldg. 5-, Toranomon 3-chome Minato-ku Tokyo, 105-8423, JP)
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