Patents Assigned to Wacker-Chemie
  • Method for producing silicone emulsions
    Patent number: 9814667
    Abstract: A method for producing aqueous silicone emulsions containing highly viscous polyorganosiloxanes having a low content of cyclic siloxanes in several steps; the addition of acidic compounds intended to catalyze polycondensation of the polyorganosiloxanes being carried out only after an emulsion is produced in the first step exclusively with nonionogenic emulsifiers, without impairing the rate of the polycondensation reaction.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: November 14, 2017
    Assignee: WACKER CHEMIE AG
    Inventors: Holger Rautschek, Marco Kauschke
  • WATER-REDISPERSIBLE POLYMER POWDERS FOR CARPET COATING COMPOSITIONS
    Publication number: 20170321375
    Abstract: The use of redsipersible polymer powders containing no organic emulsifier for a binder in the production of carpeting is surprisingly superior to use of the same polymers in the form of an aqueous dispersion. Tuft removal force in particular, is improved. The compositions contain no thickener, or a reduced level of thickener.
    Type: Application
    Filed: December 10, 2015
    Publication date: November 9, 2017
    Applicant: Wacker Chemie AG
    Inventors: Timo MELCHIN, Ulf DIETRICH, Holger KUENSTLE
  • PRODUCTION OF ISOCYANATE FUNCTIONAL ORGANOSILANES
    Publication number: 20170320896
    Abstract: Isocyanate-functional silanes are prepared in high yield by pyrolysis of an O-carbamate prepared by reaction of a dialkylcarbonate with an aminoalkyl-functional silane in the presence of a basic catalyst, where the catalyst is neutralized by an acid which has a pKa of all protolysis stages of not more than 4. The neutralized or partially neutralized catalyst need not be removed prior to pyrolysis. The isocyanato-functional silanes exhibit higher storage stability as compared to those prepared from O-carbamates where catalyst neutralization is effected by weak acids.
    Type: Application
    Filed: October 29, 2015
    Publication date: November 9, 2017
    Applicant: Wacker Chemie AG
    Inventors: Volker STANJEK, Lars ZANDER
  • METHOD FOR THE HYDROPHOBIC IMPREGNATION OF FIRED CERAMIC MOLDED BODIES
    Publication number: 20170321015
    Abstract: Fired clay moldings are hydrophobicized by applying a long chain alkyl-substituted alkoxysilane or hydrolysate thereof having up to 5 silicon atoms, and an alkoxy-functional silicone resin. The moldings, which may be roof tiles, are hydrophobicized to a significant depth, without discoloration.
    Type: Application
    Filed: November 10, 2015
    Publication date: November 9, 2017
    Applicant: Wacker Chemie AG
    Inventors: Hartmut ACKERMANN, Rudolf HAGER
  • FLUIDIZED BED REACTOR FOR PRODUCING POLYCRYSTALLINE SILICON GRANULES AND METHOD FOR THE ASSEMBLY OF SUCH A FLUIDIZED BED REACTOR
    Publication number: 20170320035
    Abstract: Assembly of a fluidized bed reactor for the preparation of polycrystalline silicon granules by chemical vapor deposition of silicon onto seed particles and removal of polycrystalline silicon granules is facilitated without breakage and with gas tightness by a specific assembly sequence.
    Type: Application
    Filed: November 3, 2015
    Publication date: November 9, 2017
    Applicant: Wacker Chemie AG
    Inventors: Dirk WECKESSER, Gerhard FORSTPOINTNER, Harald HERTLEIN
  • CURABLE, HIGHLY TRANSPARENT SILICONE COMPOSITION WITH IMPROVED MECHANICS, FOR OPTICAL COMPONENTS
    Publication number: 20170321039
    Abstract: Cast silicone compositions with high transparency suitable for use as optical components contain a base polymer with a refractive index?1.42, and a reinforcing particulate silica which is surface modified to have a refractive index within 0.03 of the refractive index of the base polymer, by reaction with an aryl-silane or aryl-siloxane.
    Type: Application
    Filed: October 29, 2015
    Publication date: November 9, 2017
    Applicant: Wacker Chemie AG
    Inventors: Arvid KUHN, Inge SCHREIBER
  • FLUIDIZED BED REACTOR AND PROCESS FOR PRODUCING POLYCRYSTALLINE SILICON GRANULES
    Publication number: 20170312724
    Abstract: Contamination of fluidized bed-produced polycrystalline granules by phosphorus is reduced by employing as seals and/or packings, graphite containing <500 ppmw of phosphorus.
    Type: Application
    Filed: October 21, 2015
    Publication date: November 2, 2017
    Applicant: Wacker Chemie AG
    Inventors: Gerhard FORSTPOINTNER, Dirk WECKESSER
  • METHOD FOR PRODUCING SILICONE ELASTOMER PARTS
    Publication number: 20170312981
    Abstract: Silicon elastomer articles are prepared by a 3-D printing process by depositing droplets of high viscosity curable silicone onto a substrate layer by layer from independently spatially controllable nozzles and irradiation with independently spatially controllable electromagnetic energy.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 2, 2017
    Applicant: Wacker Chemie AG
    Inventors: Ernst SELBERTINGER, Frank ACHENBACH, Bernd PACHALY
  • Apparatus and process for treating liquids containing chlorosilanes
    Patent number: 9802837
    Abstract: Chlorosilane-containing process streams are treated by vaporizing the process stream, contacting the vaporized process stream with an alkaline medium in a scrubber, the scrubbing liquid being maintained at a pH of 9-13 by introduction of alkaline medium, and feeding the scrubbing medium to a waste treatment plant containing at least one mixing tank in which the pH is adjusted to the range of 7-9 by addition of mineral acid, separating solids by means of a centrifuge, and isolating separated solids.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: October 31, 2017
    Assignee: WACKER CHEMIE AG
    Inventors: Sebastian Liebischer, Daniel Braeunling, Daniel Gaess, Jeffery Thompson
  • Aqueous vinyl acetate ethylene copolymer dispersion for paper coating
    Patent number: 9803101
    Abstract: The invention relates to a polymer dispersion for paper coating compositions obtainable by means of a radically initiated, aqueous emulsion polymerization of a) 60 to 97% by weight of vinyl acetate, b) 2 to 30% by weight of ethylene, c) 0.5 to 5% by weight of at least one ethylenically unsaturated silane monomer, d) 0.5 to 5% by weight of at least one ethylenically unsaturated carboxylic acid, based in each case on the total weight of the monomers used for the polymerization, and the data in % by weight summing in each case to 100% by weight, in the presence of one or more polymeric emulsifiers.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 31, 2017
    Assignee: WACKER CHEMIE AG
    Inventors: Yong Hae Choi, Jong Bok Kim, Woo Jae Lee
  • PROCESS FOR SILANE OLIGOMER COMPOSTITION PREPARATION AND USE THEREOF
    Publication number: 20170305940
    Abstract: Epoxy silane oligomers are prepared from a glycidoxypropyl alkoxysilane in the presence of an alcohol and an esterification and/or transesterification catalyst, and have improved storage stability. The oligomers are particularly useful as scrub-resistant additives for aqueous architectural coatings.
    Type: Application
    Filed: January 8, 2015
    Publication date: October 26, 2017
    Applicant: Wacker Chemie AG
    Inventors: Mark SHA, Deng JI, Shuai (Tony) TIAN
  • METHOD FOR THE DIRECT SYNTHESIS OF METHYL CHLOROSILANES IN FLUIDIZED-BED REACTORS
    Publication number: 20170305939
    Abstract: Methylchlorosilanes are synthesized by an at least two stage reaction in which contact composition from a first fluidized bed reactor is fed to a second fluidized bed reactor.
    Type: Application
    Filed: November 19, 2015
    Publication date: October 26, 2017
    Applicant: Wacker Chemie AG
    Inventors: Javad MOHSSENI, Jochen GROSS, Konrad MAUTNER, Natalia SOFINA, Till WUESTENFELD
  • DEVICE FOR INSULATING AND SEALING ELECTRODE HOLDERS IN CVD REACTORS
    Publication number: 20170306477
    Abstract: Siemens CVD reactors are sealed in a manner which facilitates long production campaigns without refurbishing the seals, by the use of at least two seals, and an electrically insulating member having a thermal conductivity of from 1 to 200 W/mK, a sustained use temperature of at least 400° C., and a resistivity of more than 1-109 ?cm.
    Type: Application
    Filed: November 6, 2015
    Publication date: October 26, 2017
    Applicant: Wacker Chemie AG
    Inventors: Heinz KRAUS, Christian KUTZA, Dominik RENNSCHMID
  • METHOD FOR PRODUCING ORGANOFUNCTIONAL SILICONE RESINS
    Publication number: 20170306097
    Abstract: Organofunctional organopolysiloxanes resins are prepared by reaction of a reactive silicone resin with a symmetrically substituted disiloxane in the presence of a heterogeneous activated silicate catalyst.
    Type: Application
    Filed: September 16, 2015
    Publication date: October 26, 2017
    Applicant: Wacker Chemie AG
    Inventor: Frank SANDMEYER
  • METHOD FOR PRODUCING POLYCRYSTALLINE SILICON
    Publication number: 20170305748
    Abstract: The rate of rod fallover in the production of polycrystalline silicon by the Siemens process is sharply reduced by cleaning the Siemens reactor base plate by at least a two-step procedure comprising suctioning the base plate in one step, and subsequently cleaning with liquid or solid cleaning medium in a second step, between each phase of rod removal and new support body installation.
    Type: Application
    Filed: August 10, 2015
    Publication date: October 26, 2017
    Applicant: Wacker Chemie AG
    Inventors: Friedrich POPP, Harald HERTLEIN
  • PURIFICATION OF CHLOROSILANES BY MEANS OF DISTILLATION AND ADSORPTION
    Publication number: 20170296942
    Abstract: Separation of chlorosilane mixtures containing boron, arsenic, and/or phosphorus impurities is facilitated by a distillative separation using at least one divided column, with recycle streams to a first column being passed through an external absorbent for the impurities.
    Type: Application
    Filed: October 7, 2015
    Publication date: October 19, 2017
    Applicant: Wacker Chemie AG
    Inventors: Maximilian AIGNER, Uwe PAETZOLD, Jan PROCHASKA
  • Method for providing an active ruthenium catalyst solution for the transvinylation of carboxylic acids
    Patent number: 9782752
    Abstract: The invention relates to a method for providing a ruthenium catalyst solution which is active during the transvinylation of a surfactant vinyl ester with a surfactant carboxylic acid, comprising an Ru metal concentration of more than 0.5 wt. % based on the total weight of the ruthenium catalyst solution. The invention is characterized in that a) at least one ruthenium (III) halogenide with at least one inorganic or organic base, at least one surfactant vinyl ester, and at least one surfactant carboxylic acid is reacted at a temperature of 70° C. to 170° C.; b) the molar ratio of surfactant vinyl ester to surfactant carboxylic acid is 1:1.8 to 1.8:1; and c) the ruthenium (III) halogenide is used in a quantity of >0.5 wt. % of Ru metal based on the total weight of the surfactant vinyl ester and surfactant carboxylic acid.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: October 10, 2017
    Assignee: Wacker Chemie AG
    Inventor: Peter Gigler
  • AQUEOUS COATING MATERIALS
    Publication number: 20170283654
    Abstract: Silicone resin dispersions containing at least one silicone resin having at least two differently substituted T units are used in aqueous coating materials producible therefrom for mineral building materials, wood or metal. The aqueous coating materials exhibit good hydrophobicity without beading, low water permeability, and acquire these properties rapidly after application.
    Type: Application
    Filed: July 13, 2016
    Publication date: October 5, 2017
    Applicant: Wacker Chemie AG
    Inventors: Frank SANDMEYER, Albert HAUSBERGER, Martin SEBALD
  • ORGANOPOLYSILOXANE COMPOSITIONS WHICH CAN BE CROSSLINKED BY MEANS OF A CONDENSATION REACTION
    Publication number: 20170283559
    Abstract: Moisture curable elastomer compositions are highly suitable for use as sealants, and initially contain an organopolysiloxane having condensable groups, a tri-acyloxy functional organosilicon compound, and as fillers, anhydrite and silica.
    Type: Application
    Filed: January 18, 2016
    Publication date: October 5, 2017
    Applicant: Wacker Chemie AG
    Inventors: Torsten SIXT, Franz NEUHAUSER
  • Chunk polycrystalline silicon and process for cleaning polycrystalline silicon chunks
    Patent number: 9776876
    Abstract: The invention provides chunk polycrystalline silicon having a concentration of carbon at the surface of 0.5-35 ppbw. A process for cleaning polycrystalline silicon chunks having carbon contaminations at the surface, includes a thermal treatment of the polycrystalline silicon chunks in a reactor at a temperature of 350 to 600° C., the polycrystalline silicon chunks being present in an inert gas atmosphere during the thermal treatment, and the polycrystalline silicon chunks after the thermal treatment having a concentration of carbon at the surface of 0.5-35 ppbw.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: October 3, 2017
    Assignee: WACKER CHEMIE AG
    Inventors: Gerhard Traunspurger, Laszlo Fabry, Reiner Pech