Crosslinked microgel for cathodic electrocoating compositions

Details Crosslinked microgel for cathodic electrocoating compositions Crosslinked microgel for cathodic electrocoating compositions

1993-07-19

1994-12-06

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523415, 2041814, C08K 320, C08L 6302

Patent

active

053711203

ABSTRACT:
A cationic finely divided polymeric microgel dispersed in an aqueous medium for use in cationic electrocoating compositions containing a poly epoxy hydroxy ether resin having terminal epoxy groups and having about 20-60% of the terminal epoxy groups reacted with ketimine or oxazolidine, 10-60% of the terminal epoxy groups reacted with a primary or secondary amine or mixtures thereof to form hydroxy and amine groups and 10-40% of the terminal epoxy groups are unreacted; wherein the terminal epoxy groups are reacted with amine groups thereby forming a crosslinked microgel and residual amine groups are neutralized with acid to form cationic groups thereby forming a water dispersible microgel.

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