Patent ID: 7531600

Claim:
A water-in-oil emulsion composition comprising: (a) 5% to 99% by weight of a water-in-oil emulsion comprising: (i) 10% to 90% by weight of a hydrophobic oil phase; (ii) 0.5% to 10% by weight of a surfactant system; and (iii) 5% to 90% by weight of a polymer-containing aqueous phase comprising water and a polymer or copolymer containing repeat units from an acrylamide monomer, wherein the polymer or copolymer comprises from 2% by weight to 89.5% by weight of the water-in-oil emulsion; (b) 0.1% to 10% by weight of one or more inorganic microparticles; (c) 0.5% to 90% by weight of a carrier solvent; and (d) 0 to 90% by weight of a fluidizing agent, wherein each of the above weight percentages is based upon the total weight of the composition.