Burghausen, Germany
Burghausen, Germany

Wacker Chemie AG is a worldwide operating company in the chemical business, founded 1914. The company is controlled by the Wacker-family holding more than 50 percent of the shares. The corporation is operating more than 25 production sites in Europe, Asia, and the Americas. The product range includes silicone rubbers, polymer products like ethylene vinyl acetate redispersible polymer powder, chemical materials, polysilicon and wafers for semiconductor industry. The company sells its products in more than 100 countries. As of 31 December 2010 16,314 employees have been with Wacker. Corporate annual sales in 2010 were about 4,75 billion Euros, up 28% compared to 2009.The biggest production site of Wacker Chemie is the Burghausen plant in the south-east of Bavaria, Germany, with about 10,000 employees. The US headquarters are located at Adrian, Michigan. Wikipedia.


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Patent
Wacker Chemie AG | Date: 2016-11-04

Weathering-resistance and hydrophobicity of paints and coatings are enhanced by addition of a composition comprising an organopolysiloxanes bearing pendent aminoalkyl groups and fatty acid ester-based epoxy group-containing compounds.


Reversibly water-absorbtive silicone rubbers are prepared from addition cross-likable organopolysiloxanes by means of a hydrosilylation catalyst, and initially contain anhydrous sodium sulfate, anhydrous magnesium sulfate, or a mixture thereof. The silicone rubbers are capable of absorbing large amounts of water.


Patent
Wacker Chemie AG | Date: 2015-03-23

The invention relates to a process for transvinylation of a carboxylic acid feedstock with a vinyl ester feedstock to obtain a vinyl ester product and the corresponding acid of the vinyl ester feedstock in the presence of one or more ruthenium catalysts, wherein a) the vinyl ester feedstock, the carboxylic acid feedstock and a ruthenium catalyst are fed to the reactor, and b) the transvinylation reaction is carried out, characterized in that a carbonyl-free Ru(III) carboxylate is used as the ruthenium catalyst and in that no carbon monoxide is supplied, c) the reaction is carried out at a temperature of 110 to 170 C., d) upon completion of the transvinylation reaction, the vinyl ester feedstock and the corresponding acid are separated from the reaction mixture by distillation, e) the vinyl ester product is separated by distillation from the bottom product of the distillation, and f) the remaining reaction mixture is recycled into the reactor.


Patent
Wacker Chemie AG | Date: 2017-01-25

The invention relates to a reactor for preparing granular polysilicon by deposition of polycrystalline silicon on silicon seed particles, comprising a reaction vessel, an inner reactor tube for a fluidized bed comprising granular polysilicon and a reactor bottom within the reactor vessel, a heating device for heating the fluidized bed in the inner reactor tube, at least one bottom gas nozzle for introduction of fluidizing gas and at least one reaction gas nozzle for introduction of reaction gas, a feed device to introduce silicon seed particles and also an offtake line for granular polysilicon and a device for discharging reactor offgas from the reactor vessel, characterized in that a cylindrical component which has openings on its cylindrical surface, with at least 5% and not more than 95% of the cylindrical surface being open, is located between inner reactor tube and heating device.


Patent
Wacker Chemie AG | Date: 2017-02-15

The invention relates to a process for transvinylation of a carboxylic acid feedstock with a vinyl ester feedstock to obtain a vinyl ester product and the corresponding acid of the vinyl ester feedstock in the presence of one or more ruthenium catalysts, wherein a) the vinyl ester feedstock, the carboxylic acid feedstock and a ruthenium catalyst are fed to the reactor, and b) the transvinylation reaction is carried out, characterized in that a carbonyl-free Ru(III) carboxylate is used as the ruthenium catalyst and in that no carbon monoxide is supplied, c) the reaction is carried out at a temperature of 110 to 170 C, d) upon completion of the transvinylation reaction, the vinyl ester feedstock and the corresponding acid are separated from the reaction mixture by distillation, e) the vinyl ester product is separated by distillation from the bottom product of the distillation, and f) the remaining reaction mixture is recycled into the reactor.


Polyvinyl acetate copolymers having specific ranges of vinyl acetate, vinyl chloride, and ethylene show improved adhesion under widely varying conditions when used in hydraulically setting construction materials.


A rod having a length of 0.5 m to 4 m and having a diameter of 25 mm to 220 mm, comprising a high-purity alloy composed of 0.1 to 50 mol % germanium and 99.9 to 50 mol % silicon, the alloy having been deposited on a thin silicon rod or on a thin germanium-alloyed silicon rod, the deposited alloy having a polycrystalline structure.


Patent
Wacker Chemie AG | Date: 2016-02-03

The present invention provides a method of making a nanoemulsion comprising the steps of:a) solubilizing a silicone resin in an organic solvent system to yield a silicone resin solution concentration of 80% or less, wherein the organic solvent system comprises diethyleneglycol monobutyl ether and at least one additional solvent selected from the list consisting of monoalcohols, polyalcohols, ethers of monoalcohols, ethers of polyalcohols, fatty esters, Guerbet alcohols, isoparaffins, naphthols, glycol ethers or mixtures thereof, provided that if the additional solvent is a glycol ether it is not diethyleneglycol monobutyl ether;b) mixing the silicone resin solution from a) with an aminosiloxane polymer to obtain an aminosiloxane polymer:silicone resin mixture having ratio of about 20:1;c) allowing the aminosiloxane polymer:silicone resin mixture to age for at least about 6 hours at ambient temperature;d) adding the aminosiloxane polymer:silicone resin mixture to a vessel;e) optionally adding with agitation an additional organic solvent to the aminosiloxane polymer:silicone resin mixture;f) mixing until homogenous;g) adding a protonating agent;h) additionally adding an aqueous carrier in an amount to produce the desired concentration of emulsion;and a nanoemulsion preparable by said method.


Patent
Wacker Chemie AG | Date: 2016-03-10

The invention relates to a process for preparing chloroacetaldehyde acetals of monohydric, dihydric or higher-functionality aliphatic alcohols, in which the chloroacetaldehyde acetal is obtained from an aqueous chloroacetaldehyde solution in the presence of the alcohol to be acetalized and an acid catalyst by azeotropic removal of water with the aid of a solvent, wherein the solvent is a halogenated solvent.


Patent
Wacker Chemie AG | Date: 2016-02-03

The present invention provides a method of making a nanoemulsion comprising the steps of:a) solubilizing a silicone resin in an organic solvent system to yield a silicone resin solution concentration of about 80% or less, wherein the organic solvent system comprises a single solvent selected from the group consisting of monoalcohols, polyalcohols, ethers of monoalcohols, ethers of polyalcohols, fatty esters, Guerbet alcohols, isoparaffins, naphthols, glycol ethers, provided that if the solvent is a glycol ether it is not diethyleneglycol monobutyl ether;b) mixing the silicone resin solution from a) with an aminosiloxane polymer to obtain an aminosiloxane polymer:silicone resin mixture having ratio of about 20:1;c) allowing the aminosiloxane polymer:silicone resin mixture to age for at least about 6 hours at ambient temperature;d) adding the aminosiloxane polymer:silicone resin mixture to a vessel;e) optionally adding with agitation an additional organic solvent to the aminosiloxane polymer:silicone resin mixture;f) mixing until homogenous;g) adding a protonating agent;h) additionally adding an aqueous carrier in an amount to produce the desired concentration of emulsion;and a nanoemulsion preparable by said method.

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