Patent ID: 7700527

Claim:
A composition of matter resistant to foaming comprising a hydrocarbon oil and an acrylate copolymer dispersed in the said hydrocarbon oil, which acrylate copolymer contains at least one polymerised fluorinated methacrylate monomer wherein the said at least one fluorinated methacrylate monomer in the acrylate copolymer is selected from the group consisting of 2,2,2-trifluoroethyl methacrylate, 3,3,3-trifluoropropyl methacrylate, 2,2,3,3,3-penta-fluoropropyl methacrylate, 2,2,2-trifluoroisopropyl methacrylate and 2,2, 2,2′,2′-hexafluoroisopropyl methacrylate.