Abstract: A powdery opacifying additive, comprising a polymer of one or more monomers from the group comprising vinyl esters, (meth)acrylic esters, vinylaromatics, olefins, 1,3 dienes and vinyl halides and, if appropriate, further monomers which are copolymerizable therewith, in the form of agglomerated polymer particles with included air-voids, having a volume mean particle size dv of 20 to 80 ?m.

Abstract: The invention provides a polymer dispersion for paper coating compositions, obtainable by means of a radically initiated, aqueous emulsion polymerization in the presence of one or more emulsifiers and optionally protective colloids, of a) 50 to 93% by weight of at least one vinyl ester of an alkanoic acid with 1 to 12 C-atoms, whose homopolymer has a glass transition temperature Tg of below about 350° K, b) 2 to 30% by weight of ethylene, c) 5 to 20% by weight of at least one monomer whose homopolymer has a glass transition temperature Tg of at least about 350° K, d) 0.1 to 2% by weight of ethylenically unsaturated silane monomers, e) 0 to 5% by weight of further ethylenically unsaturated monomers that are copolymerizable with vinyl acetate and ethylene, based in each case on the total weight of the monomers used for the polymerization, with the data in % by weight summing in each case to 100% by weight.

Abstract: A grout compositions, storable with the exclusion of water, and crosslinkable upon ingress of water at room temperature is prepared by admixing a relatively minor proportion of a moisture-curable organopolysiloxanes, composition containing an alkoxysilyl-terminated, urethane-group-containing polymer and a silicone resin, with a major proportion of aggregate.

Abstract: Organopolysiloxanes bearing regularly spaced pendent carboxylic acid groups or salts thereof have a block polymer structure and are derived by the double half-esterification of a dianhydride and a silanol- or carbinol-functional organopolysiloxane or sulfur analog thereof. The products can form stable aqueous dispersions without the need for a surfactant.

Abstract: Stable emulsions of silicone terminated polyethers and silicone resins are used to prepare one-component grout with very good mechanical properties gained within a short time after the grout cures by adding a proportion of aggregate to the emulsions.

Abstract: Defoamer compositions contain a) a two-stage hydrosilylation product of one or more M4HQ or M3HTphenyl starting materials with a hydrosilylatable composition containing ?-methylstyrene, and then with a linear or branched organopolysiloxane bearing at least two hydrosilylatable groups; b) a silicone resin; and c) silica. The defoamers are particularly useful in machine laundering and dishwashing compositions.

Abstract: An omniphobic aqueous stain repellant integral grout additive contains an aminoalkyl-substituted polyorganosiloxane, preferably, a higher alkyl alkoxysilane, an organopolysiloxane T resin bearing silicon-bonded alkoxy groups, a fluoro(meth)acrylate polymer or copolymer, and preferably, a film forming (meth)acrylate polymer or copolymer latex. The omniphobic grout additive provides high stain repellancy to grout in an economic manner.

Abstract: Proppant particles coated with an arylolic resin/silicone resin copolymer, wherein the silicon resin contains D units and T units, are suitable for fracturing operations in geological formations and retain their deformability over time without becoming excessively brittle.

Abstract: The invention provides a polymer dispersion for paper coating compositions, obtainable by means of a radically initiated, aqueous emulsion polymerization in the presence of one or more emulsifiers and optionally protective colloids, of a) 50 to 93% by weight of at least one vinyl ester of an alkanoic acid with 1 to 12 C-atoms, whose homopolymer has a glass transition temperature Tg of below about 350° K., b) 2 to 30% by weight of ethylene, c) 5 to 20% by weight of at least one monomer whose homopolymer has a glass transition temperature Tg of at least about 350° K., d) 0.1 to 2% by weight of ethylenically unsaturated silane monomers, e) 0 to 5% by weight of further ethylenically unsaturated monomers that are copolymerizable with vinyl acetate and ethylene, based in each case on the total weight of the monomers used for the polymerization, with the data in % by weight summing in each case to 100% by weight.

Abstract: Water-in-oil invert emulsions containing no surfactant are formed by simple mixing of water with organopolysiloxanes containing all of aralkyl, long chain alkyl, and hydrophilic groups. The surfactant-free water-in-oil invert emulsions have a wide variety of uses, for example in compositions for surface care, antifog coating compositions, cosmetic compositions, and hair care compositions.

Abstract: A carpet product includes in sequence a) a primary backing material having a back side and a face side, with carpet fibers extending from the face side to form a carpet pile and also passing through the primary backing material and forming loops on the back side; b) a primary coating layer on the loops, including a vinyl acetate ethylene copolymer and present at from 542 to 1085 g/m2 (16 to 32 oz./yd2) on a dry solids basis; c) a secondary coating layer on the primary coating layer, including a styrene-butadiene copolymer; and d) a secondary backing material on the secondary coating layer and adhered thereby to the primary coating layer.

Abstract: An aqueous carpet coating composition includes a particulate filler, a polymeric thickener and an aqueous dispersion of a copolymer that includes vinyl acetate units and ethylene units. The dispersion stabilization system includes a) 1.5 to 3 wt % of a combination of polyvinyl alcohols including a1) one or more partially hydrolyzed polyvinyl alcohols with a degree of hydrolysis of 85 to 95 mol % and a Hoeppler viscosity of 10-33 mPa·s, and a2) one or more highly hydrolyzed polyvinyl alcohols with a degree of hydrolysis of 98 to 100 mol % and a Hoeppler viscosity of 10-33 mPa·s; and b) 1.5 to 3 wt % of an emulsifier component consisting of one or more nonionic emulsifiers and one or more anionic emulsifiers. The dispersion has a viscosity of ?1500 mPa·s and the viscosity of the coating composition is 6000 to 7000 mPa·s.

Abstract: An aqueous composition includes polyvinyl alcohol, an acid having a pKa of at most 4.0, and a dispersion of a polymer in which vinyl acetate units constitute at least 60 wt % of the polymer. The polymer does not contain units of any N-methylol-containing monomer, and at least a portion of the polyvinyl alcohol is present in the form of an emulsion stabilizer for the polymer. The wet strength of a fibrous nonwoven substrate can be increased by applying one or more aqueous compositions that together include polyvinyl alcohol, an acid having a pKa of at most 4.0, and a dispersion of a polymer as described above, followed by a final drying step. A fibrous nonwoven article can be prepared in this way.

Abstract: Emulsions of silicone terminated polyethers are used to modify paints and coatings over masonry, plaster, cellulous, and EIFS substrates to increase flexibility, water repellency, and elastomeric properties of the paints and coatings to protect the paint and coating substrates from cracking due to moisture penetration. The modified paints and coatings are also used as anti-graffiti paint.

Abstract: T-aminoalkyl-functional organopolysiloxanes with defined viscosity can be reproducibly prepared without gelling by condensing an organopolysiloxane containing at least two Si-bonded hydroxyl groups with an aminoalkyltrialkoxysilane in the presence of an organic compound bearing one or more hydroxyl groups.

Abstract: Organopolysiloxanes having a greater degree of defined reactivity through epoxy, isocyanate, anhydride, amino, carboxy, and (meth)acrylate groups are prepared by cohydrolytic condensation of reactive group-containing precursors and other condensable precursors in amounts such that the reactive organopolysiloxanes product contains on average more than two reactive groups, less than 20% by weight of alkoxy groups, and a proportion of non-reactive optionally substituted hydrocarbon groups such that the ratio of non-reactive hydrocarbon groups to Si atoms is greater than 1.

Abstract: A process for preparing an aqueous emulsifier-stabilized vinyl acetate-ethylene copolymer dispersion with weight average particle size in a range from 100 nm to 300 nm includes emulsion polymerization of a reaction mixture including: a) vinyl acetate and ethylene, b) 0.05 to 1% by weight, based on the total weight of monomers and comonomers, of at least one functional comonomer selected from the group consisting of ethylenically unsaturated monomers with at least one phosphate group or phosphonic acid group or their salts and ethylenically unsaturated sulphonic acids or their salts, c) 0.5 to 5% by weight, based on the total weight of monomers and comonomers, of at least one anionic emulsifier and optionally one or more nonionic emulsifiers, and d) optionally at most 0.5%, based on the total weight of monomers and comonomers, of a protective colloid. The process reactor uses an external heat exchange circuit.

Abstract: Aqueous emulsions of in situ-polymerized hydroxyl-functional organopolysiloxanes prepared in the presence of an acid catalyst and an alkanol have lower neat fluid viscosities than otherwise similar polymers prepared in the absence of the alkanol.

Abstract: Organopolysiloxanes having a greater degree of defined reactivity through epoxy, isocyanate, anhydride, amino, carboxy, and (meth)acrylate groups are prepared by cohydrolytic condensation of reactive group-containing precursors and other condensable precursors in amounts such that the reactive organopolysiloxanes product contains on average more than two reactive groups, less than 20% by weight of alkoxy groups, and a proportion of non-reactive optionally substituted hydrocarbon groups such that the ratio of non-reactive hydrocarbon groups to Si atoms is greater than 1.

Abstract: Water-in-oil invert emulsions containing no surfactant are formed by simple mixing of water with organopolysiloxanes containing all of aralkyl, long chain alkyl, and hydrophilic groups.