C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 13/04 (2006.01) C09D 5/08 (2006.01) C09D 5/44 (2006.01) C25D 13/06 (2006.01)
Patent
CA 2463280
A metal coating method excellent in corrosion resistance, which comprises: using a cationic coating composition containing a base resin and a curing agent; and forming a film onto such as a metal having a glass transition point (Tg) of from 60 to 95°C, and an oxygen permeability of from 5 × 10 -13 (cc.cndot.cm/cm2.cndot.sec.cndot.cmHg) to 5 × 10 - 11 (cc.cndot.cm/cm2.cndot.sec.cndot.cmHg) at a film thickness of 20 µm. The base resin is a xylene-formaldehyde-resin-modified amino-containing epoxy resin obtained by reacting an epoxy resin (1) having an epoxy equivalent of from 180 to 2500 with a xylene formaldehyde resin (2) and an amino-containing compound (3). The curing agent is a blocked polyisocyanate compound obtained by blocking an isocyanate group of a polyisocyanate compound with a blocking agent.
Iijima Hideki
Shimasaki Akihiko
Kansai Paint Co. Ltd.
Nelligan O'brien Payne Llp
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