Oxazolidone ring-containing modified epoxy resins and...

Details Oxazolidone ring-containing modified epoxy resins and... Oxazolidone ring-containing modified epoxy resins and...

C - Chemistry, Metallurgy

08

G

C08G 59/14 (2006.01) C08G 18/00 (2006.01) C08G 18/80 (2006.01) C08G 59/26 (2006.01) C08G 59/28 (2006.01) C08G 59/40 (2006.01) C09D 5/44 (2006.01) C09D 17/00 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2123671

Polyglycidyl epoxy resins are modified to have a blocked isocyanate moiety bound to the resin backbone through an oxazolidone ring by reacting the epoxy resin with an asymmetrically blocked diisocyanate. Further reaction with a cationic active hydrogen compound gives a modified epoxy resin having a cationic group in addition to the blocked isocyanate moieties. The modified epoxy resins are incorporated into cathodic electrodeposition paint as a cationic binder resin or pigment dispersing agent.

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