Patent ID: 8507597

Claim:
A defoamer formulation comprising 0.01 to 50% by weight of a combination of an acrylate polymer with 1-20 mol % acrylic acid in a suitable diluent, based on a total weight of the formulation; 20-80% by weight of an organic carrier, based on a total weight of the formulation, the organic carrier selected from diisodecyl phthalate, diisooctyl adipate, bis-2-ethylhexyl adipate, dioctyl adipate, dihexyl phthalate, polybutenes having a molecular weight of from about 300-1300 atomic mass units, fatty acid esters, or mixtures thereof; 0.01 to 15% by weight of an additive, based on a total weight of the formulation; and optionally, 0.01 to 30% by weight of a surfactant, based on a total weight of the formulation; wherein the defoamer formulation does not contain oil or free silicone.