Oxazolidone ring-containing modified epoxy resins and cathodic e

Details Oxazolidone ring-containing modified epoxy resins and cathodic e Oxazolidone ring-containing modified epoxy resins and cathodic e

1994-05-16

1995-08-29

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

2041814, 2041817, 528 45, 528 52, 528117, C08K 320, C08L 6302

Patent

active

054460778

ABSTRACT:
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 crosslinker or cationic binder resin or pigment dispersing agent.

REFERENCES:
patent: 5272189 (1993-12-01), Kaufman
patent: 5276072 (1994-01-01), Ishii et al.

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