C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/4201, 400/42
C09D 133/24 (2006.01)
Patent
CA 1072232
Abstract of the Disclosure This invention relates to water-based coating compositions in which solvent or water popping and sagging are eliminated or at least substantially reduced. The composition comprises a thermosetting, film- forming organic binder dispersed in an aqueous medium containing from 60 to 100 parts by weight of water and 0 to 40 parts by weight of a volatile organic solvent. The organic binder is formulated from ( ) an acid-containing interpolymer adapted to be dissolved or dispersed in water with the aid of a base and (b) a water-soluble or water-dispersible polyether polyol or polyester polyol having a molecular weight of at least 300. The interpolymer consists essentially of the interpolymerization product of an N-alkoxyalkyl- substituted amide, an alpha, beta-ethylenically unsaturated carboxylic acid, and at least one other monomer containing a Image group. The properties of coatings formed from the compositions can be further enhanced if desired by incorporating (c) a water-soluble or water- dispersible aldehyde condensation resin into the organic binder.
260416
Christenson Roger M.
Evjen Clarence E.
Na
Ppg Industries Inc.
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