Abstract: Gloss enhancing compositions for polymer surfaces are microemulsions of a diaminoorganopolysiloxane, a film forming acrylate polymer, and a wax. The compositions exhibit high gloss, low sling off, and high durability, and can be formulated without organic solvents.
Type:
Application
Filed:
December 13, 2013
Publication date:
June 18, 2015
Applicant:
Wacker Chemical Corporation
Inventors:
Michael Lee Coffey, Frances Marie Fournier
Abstract: Branched organopolysiloxanes of low molecular weight contain bonded arylalkyl groups. Si—C bonded surfactant groups, preferably polyoxyalkylene polyether groups, and long chain alkyl groups, exhibit a high refractive index, are completely or partially self-emulsifying, and are compatible with a variety of cosmetically acceptable oils and solvents.
Type:
Grant
Filed:
January 31, 2013
Date of Patent:
June 9, 2015
Assignee:
Wacker Chemical Corporation
Inventors:
Aroop K. Roy, Amitabha Mitra, Michael L. Coffey
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: Aqueous emulsions of epoxy- and organo-substituted, branched organopolysiloxanes are prepared by emulsifying the latter in water with the aid of a dispersing agent. The emulsions are storage stable and are useful in multi-component coating, adhesive, and binder systems.
Abstract: Robust oiling agent compositions for use in preparing carbon fibers from acrylic polymer carbon fiber precursors contain at least one silicone copolymer minimally containing an organopolysiloxane moiety, a polyoxyalkylene polyether moiety, and at least one internal or terminal urea or urethane group.
Type:
Grant
Filed:
October 21, 2011
Date of Patent:
March 24, 2015
Assignee:
Wacker Chemical Corporation
Inventors:
Goekhan Ural, Michael W. Head, Megan P. Powell
Abstract: Liquid silicone rubber base polymer compositions having improved color are prepared by reaction of fumed silica reinforcing filler with a silazane, and without drying the silazane-treated filler, an aliphatically unsaturated silicone is added, heated to above 80° C., and then further aliphatically unsaturated silicone is added. The compositions have improved whiteness and color reproducibility.
Abstract: Blocking resistance of highly pigmented aqueous coating compositions is improved by addition of an anti-blocking organosilicon composition containing. A) 100 parts by weight of at least one aminoalkyl-functional organopolysiloxane; B) from 1 to 20 parts by weight of at least one aminoalkyl-functional alkoxysilane or partial hydrolysis product thereof, and C) from 10 to 500 parts by weight of at least one silanol-functional organopolysiloxane free of aminoalkyl groups, wherein the weight percentages of A), B), and C) are relative to the total weight of components A), B), and C). The organosilicon composition is advantageously supplied in the form of an aqueous emulsion.
Abstract: Branched organopolysiloxanes of low molecular weight contain bonded arylalkyl groups. Si—C bonded surfactant groups, preferably polyoxyalkylene polyether groups, and long chain alkyl groups, exhibit a high refractive index, are completely or partially self-emulsifying, and are compatible with a variety of cosmetically acceptable oils and solvents.
Type:
Application
Filed:
January 31, 2013
Publication date:
July 31, 2014
Applicant:
Wacker Chemical Corporation
Inventors:
Aroop K. Roy, Amitabha Mitra, Michael L. Coffey
Abstract: Woodstains of improved weatherability are prepared by incorporating polymer coated nanoparticles, and preferably at least one silicone, fluorocarbon, organosilane or wax water repellant into the woodstain.
Type:
Application
Filed:
January 28, 2013
Publication date:
July 31, 2014
Applicant:
Wacker Chemical Corporation
Inventors:
Amanda Andrews, Frank Sandmeyer, James D. Greene, Ricky W. Coffey
Abstract: Blocking resistance of highly pigmented aqueous coating compositions is improved by addition of an anti-blocking organosilicon composition containing. A) 100 parts by weight of at least one aminoalkyl-functional organopolysiloxane; B) from 1 to 20 parts by weight of at least one aminoalkyl-functional alkoxysilane or partial hydrolysis product thereof, and C) from 10 to 500 parts by weight of at least one silanol-functional organopolysiloxane free of aminoalkyl groups, wherein the weight percentages of A), B), and C) are relative to the total weight of components A), B), and C). The organosilicon composition is advantageously supplied in the form of an aqueous emulsion.
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: 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.
Type:
Application
Filed:
September 27, 2012
Publication date:
March 27, 2014
Applicant:
Wacker Chemical Corporation
Inventors:
Dennis Sagl, John McClurken, Ronald Joseph Pangrazi
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 epoxy- and organo-substituted, branched organopolysiloxanes are prepared by emulsifying the latter in water with the aid of a dispersing agent. The emulsions are storage stable and are useful in multi-component coating, adhesive, and binder systems.
Abstract: A method of forming on a substrate an adhesive region that includes an adhesive composition employs steps of: a) applying a dispersion of the adhesive composition in a solvent to an anilox roller on a flexographic press, said adhesive composition comprising an adhesive polymer; b) contacting the anilox roller with a flexographic plate to transfer a portion of the dispersion thereto, said flexographic plate comprising an adhesive application region having a shape substantially matching that of the adhesive region on the substrate; c) contacting the flexographic plate with the substrate to transfer the dispersion to the substrate; and d) drying the dispersion on the substrate to form the adhesive region.
Type:
Grant
Filed:
November 18, 2008
Date of Patent:
January 7, 2014
Assignee:
Wacker Chemical Corporation
Inventors:
Bruce Gruber, Monaca Flexer, Mark Monahan
Abstract: Amphiphilic silicons which are dispersible or self-dispersing in water, have a high refractive index, and are prepared by a hydrosilylation reaction, resulting in products which are free of cyclic organopolysiloxanes. The high refractive index and dispersibility make the amphiphilic silicones useful in personal care and cosmetics where high shine or gloss is desired.
Abstract: Copper complexes of aminoorgano group-containing organosilicon compounds exhibit high thermal stability and can be used to impart thermal stability to a wide variety of polymer compositions. The complexes are particularly useful as constituents of xerographic rollers and fuser oils, and are simply and economically prepared.
Type:
Grant
Filed:
July 27, 2011
Date of Patent:
July 9, 2013
Assignee:
Wacker Chemical Corporation
Inventors:
Elizabeth Sorensen Paps, Fushu Fu, Theodore D. Johnson
Abstract: Low VOC mineral surface enhancer compositions are non-yellowing and contain a condensable aminoorgano-functional organopolysiloxane fluid, a condensable organopolysiloxane resin, and a condensation catalyst. The compositions provide a durable, color enhancing wet look to mineral surfaces to which they are applied.
Type:
Grant
Filed:
July 28, 2011
Date of Patent:
June 25, 2013
Assignee:
Wacker Chemical Corporation
Inventors:
Hartmut Ackermann, Daniel J. Mania, Richard L. Kirkpatrick, Mike Coffey
Abstract: An aqueous composition includes a blend of: a) an aqueous dispersion of a vinyl acetate ethylene or vinyl acetate polymer, stabilized by polyvinyl alcohol and optionally also by a surfactant, wherein the polymer does not include units of any N-methylol-containing monomer; and b) an aqueous dispersion of an N-methylol-containing vinyl acetate ethylene or vinyl acetate polymer, stabilized with a surfactant, polyvinyl alcohol or a combination thereof. A method of increasing the wet strength of a fibrous nonwoven substrate includes applying to the substrate the abovementioned aqueous composition, followed by a drying step. A fibrous nonwoven article is produced.
Type:
Application
Filed:
December 7, 2011
Publication date:
June 13, 2013
Applicant:
Wacker Chemical Corporation
Inventors:
John Richard Boylan, Conrad William Perry
Abstract: An aqueous composition includes a blend of: a) an aqueous dispersion of an N-methylol-containing vinyl acetate ethylene or vinyl acetate polymer, stabilized by polyvinyl alcohol and optionally also by a surfactant, wherein N-methylol-containing monomer units constitute from 0.025 to 0.4 wt % of the polymer; and b) an acid. The invention provides a method of increasing the wet strength of a fibrous nonwoven substrate, including applying to the substrate the above aqueous composition, followed by a drying step. A fibrous nonwoven article is thereby provided.