Water-based metal surface treatment agent

Stock material or miscellaneous articles – Composite – Of epoxy ether

Reexamination Certificate

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Details

C428S413000, C523S402000, C523S406000, C148S022000

Reexamination Certificate

active

06921577

ABSTRACT:
A water-based metal surface treatment agent for the surface treatment of metals including aluminum products such as pre-coated aluminum sheets gives excellent coating film adhesion, flexibility and acid resistance.The water-based metal surface treatment agent contains the following components (1) to (3):(1) A copolymer, containing in a side chain, a diketene or ketoester capable of switching between keto and enol tautomeric forms, and containing at least one hydrophilic side chain containing a cationic group, an anionic group, or a nonionic group;(2) An epoxy resin modified with a phosphoric acid type compound; and(3) A water-soluble curing agent.

REFERENCES:
patent: H03-192166 (1991-08-01), None
patent: H05-148447 (1993-06-01), None
patent: H05-222324 (1993-08-01), None
patent: H09-176285 (1997-07-01), None
patent: 2001-039927 (2001-02-01), None
patent: 2001-316835 (2001-11-01), None
Machine Translation, JP 2001-316835, Tsuchida et al., Nov. 16, 2001.
“Hyomen Gijutsu” (‘Surface Technology’), 49(3), 221 (1998) with English abstract.

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