Cationic pigment grinding resin for electrodeposition paint and

Details Cationic pigment grinding resin for electrodeposition paint and Cationic pigment grinding resin for electrodeposition paint and

1993-10-15

1995-03-28

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, C08K 320, C08L 6302, C09D 544

Patent

active

054017823

ABSTRACT:
Disclosed is a cationic resin which can produce a pigment paste having high dispersion stability, an electrodeposition paint with good storage stability and a coated film with preferred corrosion resistance. The cationic pigment grinding resin for electrodeposition paint obtained by reacting a) a hydrophobic epoxy resin obtained by reaction of a bisphenol A type epoxy resin with a half-blocked isocyanate; with b) sulfide; which contains a group having specific chemical formula in one molecule, in which said bisphenol A type epoxy resin has an epoxy equivalent of 180 to 1,000, said hydrophobic epoxy resin has a solubility parameter of 10.0 to 11.0 and a conversion rate to tertiary sulfonium is 70 to 90%.

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