Reactive coalescents
AssigneeRohm and Haas Company
InventorsWilliam D. Emmons, Daniel A. Bors, Andrew J. Kielbania, Jr.
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Abstract
A coating or impregnating composition containing an aqueous dispersion of a vinyl addition polymer and a reactive coalescent is provided. The reactive coalescent contains at least one acetoacetate grouping, or an enamine thereof. In one embodiment the reactive coalescent also functions as an emulsion polymer crosslinker.
Claims8
A composition adapted to coat or impregnate a substrate comprising an aqueous dispersion of a vinyl addition polymer and about 1% to about 200% by weight, based on the weight of said polymer, of a reactive coalescent of formula II, ##STR3## wherein R is a monovalent or polyvalent organic radical, X is an integer from 1 to 6 whose value is equal to the valence of the organic radical R and R.sup.1 is hydrogen or C.sub.1 -C.sub.22 alkyl.
A composition adapted to coat or impregnate a substrate comprising an aqueous dispersion of a vinyl addition polymer and about 1% to about 200% by weight based on the weight of said polymer, of a reactive coalescent of formula II, ##STR4## wherein R is a monovalent or polyvalent organic radical, X is an integer from 1 to 6 whose value is equal to the valence of the organic radical R and R.sup.1 is hydrogen or C.sub.1 -C.sub.22 alkyl;
- further comprising about 0.0005% to about 2% by weight drier based on the weight said reactive coalescent.
A method for improving the coalescence of an aqueous dispersion of a vinyl addition polymer comprising admixing about 1% to about 200% by weight, based on the weight of said polymer, of a reactive coalescent of formula II,
- wherein R is a monovalent or polyvalent organic radical, X is an integer from 1 to 6 whose value is equal to the valence of the organic radical R and R.sup.1 is hydrogen or C.sub.1 -C.sub.22 alkyl.
Dependencies are inferred from the claim text.