AGENT FOR FORMING RUST-PREVENTING COATING FILM ON METAL SURFACE, AND METHOD FOR FORMING RUST-PREVENTING COATING FILM FOR METAL SUBSTRATE BY USING SAME

WIPO Patent Application WO/2015/001645

A1

Provided are a method for forming a rust-preventing coating film for a metal substrate the surface of which is prone to oxidation when subjected to galvanization or the like, and an agent for forming a rust-preventing coating film which is used in the method. The agent for forming a rust-preventing coating film can impart satisfactory rust prevention properties and decorativeness while being completely free of chromium, and can be treated using the same dip and spin process as conventional chromate treatments. The agent for forming rust-preventing coating film is an alcohol solution containing a trialkoxysilane oliogmer having the chemical structure [R1(OR2)3Si] at a quantity of 0.5-7 wt.% relative to the total quantity of the solution. R1 is a functional group in which the terminal is a vinyl group, epoxy group, styryl group, methacrylic group, acrylic group, amino group, ureido group, mercapto group, sulfide group or isocyanate group. R2 is an alkyl group or alkylene group. Furthermore, it is preferable to incorporate a thermosetting phenolic resin, an organic titanium compound or an organic aluminum compound in the agent.

OKADA KAZUO (JP)
AZUMA HIROMICHI (JP)
ARATAKE HITOMI (JP)

PCT/JP2013/068378

January 08, 2015

July 04, 2013

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OKADA CHELATE CO LTD (JP)
OKADA KAZUO (JP)
AZUMA HIROMICHI (JP)
ARATAKE HITOMI (JP)

C23C22/02; C09D183/04; C09D183/08; C23C26/00

JPH1095933A	1998-04-14
JP2006192716A	2006-07-27
JPH11124544A	1999-05-11
JP3414348B2	2003-06-09
JP2008214744A	2008-09-18

NAKAGAWA, SHINJI (JP)
Shinji Nakagawa (JP)

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