Epoxy modified core-shell latices
First Claim
1. A stable one-part latex composition produced by an aqueous emulsion polymerization method wherein a core-shell polymer is formed, said method comprising:
- (a) forming a core polymer by emulsion polymerization, said core polymer comprising;
(1) from 1 to 60% by weight of an epoxy resin, and(2) from 40 to 99% by weight of at least one ethylenically unsaturated monomer; and
(b) forming a shell polymer on said core by emulsion polymerization of a second monomer composition in the presence of said core, said monomer composition comprising;
(1) from 1 to 99.5% by weight of at least one ethylenically unsaturated monomer; and
(2) from 0.5 to 10% by weight of a hydroxyl or carboxyl functional monomer;
providing that said monomers in both said core and shell do not contain amino functional groups and wherein said core-shell polymer comprises from 1 to 80% by weight of the core polymer and from 20 to 99% by weight of the shell polymer; and
(c) post-adding to the formed core-shell polymer composition an effective curing amount of an organic compound containing at least one amino functional group which is available for later reaction with said epoxy resin upon drying to produce a crosslinked polymer product.
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Accused Products
Abstract
This invention relates to stable one-part latex compositions prepared by aqueous emulsion polymerization wherein a core-shell polymer is formed, the core formed by emulsion polymerization of an ethylenically unsaturated monomer in the presence of an epoxy resin and the shell polymer formed by emulsion polymerization of a hydroxy carboxyl containing monomer composition in the presence of the core, providing that the monomers in both the core and the shell do not contain amino functional groups, and post-adding to the formed core-shell polymer an organic compound having at least one amino functional group which is available for later reaction with the epoxy resin upon drying to produce a crosslinked polymer product.
16 Citations
18 Claims
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1. A stable one-part latex composition produced by an aqueous emulsion polymerization method wherein a core-shell polymer is formed, said method comprising:
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(a) forming a core polymer by emulsion polymerization, said core polymer comprising; (1) from 1 to 60% by weight of an epoxy resin, and (2) from 40 to 99% by weight of at least one ethylenically unsaturated monomer; and (b) forming a shell polymer on said core by emulsion polymerization of a second monomer composition in the presence of said core, said monomer composition comprising; (1) from 1 to 99.5% by weight of at least one ethylenically unsaturated monomer; and (2) from 0.5 to 10% by weight of a hydroxyl or carboxyl functional monomer;
providing that said monomers in both said core and shell do not contain amino functional groups and wherein said core-shell polymer comprises from 1 to 80% by weight of the core polymer and from 20 to 99% by weight of the shell polymer; and(c) post-adding to the formed core-shell polymer composition an effective curing amount of an organic compound containing at least one amino functional group which is available for later reaction with said epoxy resin upon drying to produce a crosslinked polymer product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification