Binder synthesis process
AssigneeRohm and Haas Company
InventorDavid M. Ingle
Life of this patent
Estimating the term…
Abstract
Wet adhesion, ICI viscosity, and scrub resistance of a paint are improved by incorporating into the paint a binder that comprises a film former and polymeric composition. The polymeric composition comprises either (a) about 15 to about 35 weight percent of substantially non-self-polymerizable monomer, about 30 to about 70 weight percent of a copolymerizable monomer whose homopolymer is water-soluble, and about 10 to about 35 weight percent of a wet adhesion promoting monomer, or (b) about 35 to about 65 weight percent of the substantially non-self-polymerizable monomer and about 35 to about 65 weight percent of the wet adhesion promoting monomer. The polymeric composition and film former are substantially inseparable by chromatographic means.
Claims20
A process for synthesizing a binder comprising the steps of:
- (a) forming a latex adhesion polymer comprising:
- (i) about 15 to about 35 weight percent of a substantially non-self-polymerizable monomer selected from the group consisting of itaconic acid, maleic acid, fumaric acid, itaconate ester, maleate ester, fumarate ester, and mixture thereof;
- (ii) about 30 to about 70 weight percent of a copolymerizable monomer having a water-soluble homopolymer selected from the group consisting of N-vinyl lactams having the formula ##STR10## m being an integer from about 3 to about 5;
- acrylates having the formula ##STR11## and acrylamides having the formula ##STR12## R.sub.5 and R.sub.6 being independently hydrogen or methyl, R.sub.7 being hydrogen or an alkyl group, n being an integer from 1 to about 30, an p being either 0 to 1;
- and
- (iii) about 10 to about 35 weight percent of a wet adhesion promoting monomer selected from the group consisting of ethyleneureido-containing monomers, cyanoacetoxy-containing monomers, acetoacetoxy-containing monomers, and hydroxymethyl diacetone acrylamide;
- and
- (b) polymerizing monomers in a reaction vessel to form a high molecular weight film former while delay adding the latex adhesion polymer.
A process for synthesizing a binder comprising the steps of:
- (a) forming a latex adhesion polymer comprising:
- (i) about 35 to about 65 weight percent of a substantially non-self-polymerizable monomer selected from the group consisting of itaconic acid, maleic acid, fumaric acid, itaconate ester, maleate ester, fumarate ester, and mixtures thereof;
- and
- (ii) about 35 to about 65 weight percent of a wet adhesion promoting monomer selected from the group consisting of ethyleneureido-containing monomers, cyanoacetoxy-containing monomers, acetoacetoxy-containing monomers, and hydroxymethyl diacetone acrylamide;
- and
- (b) polymerizing monomers in a reaction vessel to form a high molecular weight film former while delay adding the latex adhesion polymer.
Dependencies are inferred from the claim text.