Abstract: An anti-foaming agent containing (A) an organopolysiloxane and a finely powdered inorganic filler, (B) a polyoxyalkylene group-containing branched chain organopolysiloxane, and (C) an anionic surfactant. This anti-foaming agent exhibits stable anti-foaming performance even at high temperatures that reach, for example, 80QC or under strongly alkaline conditions and produces no aggregates.

Abstract: In a process for separating a solid material from a suspension of the solid material in water, an organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure is added to the suspension of solid material in water and the suspension is drained. The organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure increases the rate of drainage of the suspension.

Abstract: An anti-foaming agent containing (A) an organopolysiloxane and a finely powdered inorganic filler, (B) a polyoxyalkylene group-containing branched chain organopolysiloxane, and (C) an anionic surfactant. This anti-foaming agent exhibits stable anti-foaming performance even at high temperatures that reach, for example, 80 QC or under strongly alkaline conditions and produces no aggregates.

Abstract: A silicone composition comprises: (A) a silicone based antifoam agent and (B) a carboxy functional silicone. Optionally, the silicone composition further comprises at least one of: (C) an emulsifier selected from a silicone polyether emulsifier, an organic emulsifier, or mixtures thereof, or (D) a hydroxy compound selected from a glycol, water, or mixtures thereof. A process for preparing the silicone composition comprises the step of: combining (A), (B), and optionally at least one of (C) or (D).

Abstract: In a process for separating a solid material from a suspension of the solid material in water, an organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure is added to the suspension of solid material in water and the suspension is drained. The organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure increases the rate of drainage of the suspension.

Abstract: A silicone foam control composition comprises a finely divided filler, an organosilicon compound that contains at least two silicon-bonded hydroxy groups in each molecule, an organosilicon compound having at least two silicon-bonded aminoxy groups in each molecule, and optionally an inert fluid. At least (B) and (C) react so the silicone foam control composition has a viscosity of from 1,000 mPa·s to 1,000,000 mPa·s at 25° C. An oil-in-water silicone emulsion composition comprising the silicone foam control composition, a process for making the silicone foam control composition, and a method of using the composition, are also disclosed.

Abstract: This invention relates to a foam control composition comprising: (A) a silicone antifoam comprising (i) an organopolysiloxane having at least one silicon-bonded substituent of the formula X—Ar, wherein X represents a divalent aliphatic group bonded to silicon through a carbon atom and Ar represents an aromatic group, (ii) an organosilicon resin having the formula R1aSiO(4-a)/2 where R1 represents a hydrocarbon, a hydrocarbonoxy or a hydroxyl group and a has an average value of 0.5 to 2.4, and (iii) a hydrophobic filler; and (B) an organopolysiloxane resin having at least one polyoxyalkylene group in which the organopolysiloxane resin comprises tetrafunctional siloxane units having the formula SiO4/2 and monofunctional siloxane units having the formula R23SiO1/2, wherein the total number of tetrafunctional siloxane units in the resin is at least 50% based on the total number of siloxane units, and R2 represents a hydrocarbon group.

Abstract: This invention relates to a foam control composition comprising: (A) a silicone antifoam comprising (i) an organopolysiloxane having at least one silicon-bonded substituent of the formula X—Ar, wherein X represents a divalent aliphatic group bonded to silicon through a carbon atom and Ar represents an aromatic group, (ii) an organosilicon resin having the formula R1aSiO(4-a)/2 where R1 represents a hydrocarbon, a hydrocarbonoxy or a hydroxyl group and a has an average value of 0.5 to 2.4, and (iii) a hydrophobic filler; and (B) an organopolysiloxane resin having at least one polyoxyalkylene group in which the organopolysiloxane resin comprises tetrafunctional siloxane units having the formula SiO4/2 and monofunctional siloxane units having the formula R23SiO1/2, wherein the total number of tetrafunctional siloxane units in the resin is at least 50% based on the total number of siloxane units, and R2 represents a hydrocarbon group.

Abstract: Silicone antifoaming agent of the present invention demonstrates excellent antifoaming effect with regard to aqueous foaming systems, and is especially suitable for use in conjunction with inks where it significantly suppresses development of cissing during use of ink. The silicone antifoaming agent is characterized by comprising a polyoxyalkylene-modified silicone that has polyoxyalkylene groups expressed by general formula (1) and (2) given below and contains 10 to 200 diorganosiloxane units in one molecule, said polyoxyalkylene-modified silicone satisfying the following conditions: 3?E?90 and 0.01?E/(E+P)?0.45, wherein P is the total number of oxypropylene units (—C3H6O—) and E is the total number of oxyethylene units (—C2H4O—) contained in one molecule.

Abstract: Silicone antifoaming agent of the present invention demonstrates excellent antifoaming effect with regard to aqueous foaming systems, and is especially suitable for use in conjunction with inks where it significantly suppresses development of cissing during use of ink. The silicone antifoaming agent is characterized by comprising a polyoxyalkylene-modified silicone that has polyoxyalkylene groups expressed by general formula (1) and (2) given below and contains 10 to 200 diorganosiloxane units in one molecule, said polyoxyalkylene-modified silicone satisfying the following conditions: 3≦E≦90 and 0.01≦E/(E+P)≦0.45, wherein P is the total number of oxypropylene units (—C3H6O—) and E is the total number of oxyethylene units (—C2H4O—) contained in one molecule.