Wacker, United States
Wacker, United States

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Patent
Wacker Chemical Corporation | Date: 2015-09-28

Defoamer compositions contain a) a two-stage hydrosilylation product of one or more M_(4)^(H)Q or M_(3)^(H)T^(phenyl )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.


Patent
Wacker Chemical Corporation | Date: 2017-02-01

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 350K, 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 350K, 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.


Patent
Wacker Chemical Corporation | Date: 2015-03-30

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 d_(v )of 20 to 80 m.


Patent
Wacker Chemical Corporation | Date: 2015-03-27

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.


Patent
Wacker Chemical Corporation | Date: 2015-12-01

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.


Patent
Wacker Chemical Corporation | Date: 2017-02-08

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 haiides and, if appropriate, further monomers which are copolymeriza- ble therewith, in the form of agglomerated polymer particles with included air-voids, having a volume mean particle size dv of 20 to 80 pm.


Patent
Wacker Chemical Corporation | Date: 2015-05-27

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.


Patent
Wacker Chemical Corporation | Date: 2015-02-09

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.


Patent
Wacker Chemical Corporation | Date: 2015-02-09

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.


Patent
Wacker Chemical Corporation | Date: 2015-05-12

The subject of the invention is a polymer-modified asphalt composition obtained by blending asphalt with a vinyl acetate/ethylene polymer, and optionally with further additives, and a process for the preparation of the polymer-modified asphalt composition, and the use of the polymer-modified asphalt composition.

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