Acrylic/epoxy hybrid materials for laminating adhesive applications
AssigneesDow Global Technologies LLC, Rohm and Haas Company
InventorsWenwen Li, Rui Xie, Zhenwen Fu
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Abstract
A laminating adhesive composition comprising a) an aqueous dispersion of thermoplastic polymer particles imbibed with an epoxy compound wherein the concentration of the epoxy compound is from 1 weight percent to 40 weight percent, based on the total weight of the solid content of the aqueous dispersion; and b) at least one water emulsifiable or water dispersible epoxy curing agent selected from polyamines, polyamides, amidoamines, carboxylic functional polyesters, anhydrides, mercaptans, polymer captans, cyclic amidines, and combinations thereof, is disclosed.
Claims7
A laminating adhesive composition, comprising:
- a) an aqueous dispersion of thermoplastic polymer particles imbibed with an epoxy compound, wherein the concentration of the epoxy compound is from 1 to 40 weight percent, based on the total weight of the solid content of the aqueous dispersion;
- and
- b) at least one water emulsifiable or water dispersible epoxy curing agent selected from polyamines, polyamides, amidoamines, carboxylic functional polyesters, anhydrides, mercaptans, polymercaptans, cyclic amidines, and combinations thereof.
A method, comprising:
- a) mixing an epoxy resin with water to form an epoxy emulsion, wherein the epoxy emulsion comprises epoxy particles having a size in the range of from 50 nanometers to 10 microns;
- b) mixing the epoxy emulsion with an aqueous acrylate dispersion to form an acrylic/epoxy latex having acrylic particles imbibed with epoxy;
- and
- c) mixing the acrylic/epoxy latex with a hardener to form an adhesive composition.
Dependencies are inferred from the claim text.