Patent ID: 7105581
Filing Date: 2006-09-12
Classification: B01D,D21H

Abstract:
1. An antifoam formulation comprising: (A) at least one siloxane antifoam based on siloxane composition, and (B) at least one branched polyether/polysiloxane copolymer comprising structural elements of the formula  in which Y is a trivalent to decavalent, hydrocarbon radical optionally containing one or more hetero atoms selected from the group consisting of the oxygen, nitrogen and silicon, R are identical or different monovalent, optionally halogenated hydrocarbon radicals having 1 to 18 carbon atoms per radical, A is a radical of the formula —R G is a monovalent radical of the formula —C Z is a radical of the formula  in which R a, b and c are 0 or an integer between 1 and 1000, with the proviso that the branched polyether/polysiloxane copolymers (B) contain on average at least one group Z.