Patent ID: 8901204

Claim:
An ethylene propylene diene terpolymer latex blend comprising: a. 20 weight percent to 90 weight percent of a high solids 50 percent to 98 percent cross-linked ethylene propylene diene terpolymer latex comprising: (i) 15 weight percent to 88 weight percent ethylene propylene diene terpolymer with a molecular weight from 1300000 Mw to 5000 Mw, wherein the ethylene propylene diene terpolymer is formed from a plurality of random covalently linked monomers of ethylene and propylene having weight ratios from 40:60 to 85:15 of ethylene:propylene respectively; and 0.25 weight percent to 15 weight percent of the polymer is diene, wherein the diene is selected from the group: methylidene norbornene, dicyclopentadiene, ethylidene norbornene, 1,5, hexadiene, vinyl norbornene; (ii) 10 weight percent to 70 weight percent of a water, wherein the water is selected from the group consisting of: distilled water, deionized water, tap water, process water and combinations thereof; and (iii) 1 weight percent to 15 weight percent of a surfactant to form a latex, wherein the surfactant is selected from the group consisting of: a tetra-octyl ammonium chloride, a sulfo-succinate, a carboxylates, polyoxyethylene sorbates, cetyl ammonium chloride, sodium alkyl benzyl sulfonate, sodium lauryl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, rosin acids, tallow fatty acids, polyethylene stearyl ethers, perfluoro butane sulfonic acid, alkyl naphthalene sulfonate, or combinations thereof; and b. 10 weight percent to 80 weight percent of aqueous acrylic ester copolymer or a hydrofunctional polyacrylic dispersion.