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Title:
NON-CHROMATE RUST-PREVENTIVE SURFACE TREATING AGENT FOR METALLIC MEMBER HAVING ZINC SURFACE, AND METALLIC MEMBER HAVING ZINC SURFACE COATED WITH THE RUST-PREVENTIVE COATING FILM
Document Type and Number:
WIPO Patent Application WO/2007/119812
Kind Code:
A1
Abstract:
Disclosed is a non-chromate rust-preventive surface treating agent which can form, on a zinc surface of a metal member, a silica-containing coating film which hardly causes cracking or detaching and can impart good anti-rust properties to the surface. The agent comprises a solution of an alkoxysilane oligomer having a weight average molecular weight of 1,000 to 10,000 in an alcohol, wherein 2.5 to 15% of silicon atoms in the alkoxysilane oligomer molecule are substituted by titanium atoms. The alkoxysilane oligomer which is partially substituted by titanium can be produced by reacting a titanium compound with a tetraalkoxysilane monomer or an alkoxysilane oligomer in an alcoholic solution, wherein the titanium compound can be prepared by chelating about half of alkoxide groups in titanium tetraalkoxide.

Inventors:
ENDO YASUHIKO (JP)
NOGAMI HIDEAKI (JP)
WATANABE SHUNJIRO (JP)
ADACHI SHOICHIRO (JP)
KAN YUKIYASU (JP)
Application Number:
PCT/JP2007/058137
Publication Date:
October 25, 2007
Filing Date:
April 13, 2007
Export Citation:
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Assignee:
INST TECH PRECISION ELECT (JP)
ENDO YASUHIKO (JP)
NOGAMI HIDEAKI (JP)
WATANABE SHUNJIRO (JP)
ADACHI SHOICHIRO (JP)
KAN YUKIYASU (JP)
International Classes:
C09D185/00; B05D5/00; B05D7/14; B05D7/24; B32B15/08; C09D1/00; C09D5/08; C09D129/14; C09D183/02; C09D183/04; C09D183/07; C09D201/00; C23C22/02
Foreign References:
JPH03239774A1991-10-25
JPH07157715A1995-06-20
JP2004527626A2004-09-09
JP2005264170A2005-09-29
JPH0320377A1991-01-29
JPH05179201A1993-07-20
JP2005097719A2005-04-14
JP2005264170A2005-09-29
JP2006225761A2006-08-31
JPH07157715A1995-06-20
JP2003160759A2003-06-06
Other References:
See also references of EP 2009073A4
Attorney, Agent or Firm:
MORITA, Hiroshi (Sankyo Central Plaza Building 5F11-8, Nishi-Nippori 5-chom, Arakawa-ku Tokyo 13, JP)
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