Pigment grinding resin for electrodeposition paint and pigment p

Details Pigment grinding resin for electrodeposition paint and pigment p Pigment grinding resin for electrodeposition paint and pigment p

1995-01-09

1996-12-31

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, 205317, C08K 320, C08L 6302

Patent

active

055895271

ABSTRACT:
A pigment grinding resin of the formula: ##STR1## wherein, Ep is a residue of an epoxy resin having an epoxy equivalent of 150 to 2000 and a hydroxyl group equivalent of 300 to 4000; R.sup.1 represents a hydrophilic group selected from a 2-hydroxyethyl group and a group of the formula --CH.sub.2 CH(OH)CH.sub.2 R.sup.3 wherein, R.sup.3 is a hydroxyl group or a hydroxylalkyl group having 1 to 10 carbon atoms; R.sup.2 represents a hydrophilic group selected from 3-hydroxypropyl, 2-hydroxypropyl and 4-hydroxybutyl; R.sup.4 is a hydrogen atom or an alkyl, hydroxylalkyl or alkylamide group having 1 to 5 carbon atoms; m is a numerical value of 0.1 to 2.0; A is residue of a diisocyanate; B is a residue of an alcohol, an amine, a carboxylic acid, an oxime and a caprolactam having 1 to 20 carbon atoms; and n is a numerical value of 10.1 to 2.0. The pigment grinding resin of the present invention has excellent dispersibility. This invention provides a pigment grinding resin and pigment paste capable of affording a coated film having good appearance and corrosion resistance.

REFERENCES:
patent: 5401782 (1995-03-01), Kawakami et al.
Database WPI, Week, 9423, Derwent Publications Ltd., London, GB: AN 94-189024.

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