Midland, MI, United States
Midland, MI, United States

Dow Corning is an American multinational corporation headquartered in Midland, Michigan, USA. Dow Corning specializes in silicone and silicon-based technology, offering more than 7,000 products and services. Dow Corning is an equally owned joint venture of Dow Chemical and Corning. On November 13, 2014, Dow Chemical's CEO Andrew N. Liveris revealed in a presentation to investors that Corning Incorporated intended to exit the joint venture of 71 years, citing other priorities. It is speculated that Dow could be taking over the Corning's stake at Dow Corning. Liveris declined to disclose details. Wikipedia.

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A method of forming an SiC crystal including placing in an insulated graphite container a seed crystal of SiC, and supporting the seed crystal on a shelf, wherein cushion rings contact the seed crystal on a periphery of top and bottom surfaces of the seed crystal, and where the graphite container does not contact a side surface of the seed crystal; placing a source of Si and C atoms in the insulated graphite container, where the source of Si and C atoms is for transport to the seed crystal to grow the SiC crystal; placing the graphite container in a furnace; heating the furnace; evacuating the furnace; filling the furnace with an inert gas; and maintaining the furnace to support crystal growth to thereby form the SiC crystal.


Patent
Dow Corning | Date: 2017-01-31

A method of forming an SiC crystal, the method including: placing a SiC seed in a growth vessel, heating the growth vessel, and evacuating the growth vessel, wherein the seed is levitated as a result of a temperature and pressure gradient, and gas flows from a growth face of the seed, around the edge of the seed, and into a volume behind the seed, which is pumped by a vacuum system.


The present invention provides a release control agent for producing a release agent composition that has sufficient releasability from a silicone-based adhesive agent and that exhibits excellent releasability even when pressure is applied to a cured product; a silicone release agent composition containing such a release control agent; a release sheet having a cured layer formed from the cured product of the silicone release agent composition; and a laminated body having the release sheet and an adhesive layer. The present invention includes a release control agent containing from 15 to 29 mol% of a fluorine atom-containing organic group in each molecule, and an organopolysiloxane having no hydrosilylation reactive group; a silicone release agent composition containing such a release control agent; a release sheet; and a laminated body.


Disclosed is an emulsion type silicone pressure sensitive adhesive composition and a process for the production thereof. Also provided is an emulsion type silicone pressure sensitive adhesive composition, comprising: (A) 100 parts by weight of a silicone pressure sensitive adhesive; (B) 1-30 parts by weight of an emulsifier selected from the group consisting of a polyvinylalcohol and a polyether modified MQ resin wherein M is R 3SiO 1/2, and Q is SiO 4/2, wherein R represents C 1-20 alkyl; (C) water; and (D) catalyst.


Patent
Dow Corning, Multibase SA and Multibase Inc. | Date: 2017-01-11

Process for increasing the scratch resistance of a composition comprising a thermoplastic organic polymer and a scratch resistant polymer composition per se. The process for increasing the scratch resistance of a composition comprising a thermoplastic organic polymer (P) comprises reactively mixing a thermoplastic organic polymer (A) and an organopolysiloxane (B) in a first step (I) at a temperature at which the thermoplastic organic polymer (A) and the organopolysiloxane (B) are in liquid phases to form a masterbatch, wherein the organopolysiloxane (B) contains at least one functionality capable of reacting with the thermoplastic organic polymer (A) so that a copolymer of (A) and (B) is formed in the masterbatch during the reactive mixing, and in a second step (II) mixing the masterbatch with the composition comprising thermoplastic organic polymer (P).


A production method for a liquid high purity sugar derivative-modified silicone or a composition thereof, the method comprising the steps of: capturing hydrophilic impurities in solid particles by causing an impurity containing composition containing liquid sugar derivative-modified silicone and the hydrophilic impurities derived from a sugar derivative to contact the solid particles, the sugar derivative being a hydrophilic modifier of the sugar derivative-modified silicone, and the solid particles being able to capture the hydrophilic impurities; and separating the sugar derivative-modified silicone and the solid particles. The present invention provides the production method for the liquid high-purity sugar derivative-modified silicone and the composition thereof useful for production on a commercial scale.


Provided are a thermally conductive silicone composition excelling in heat resistance and thermal conductivity, in which thickening in an uncured state is suppressed, and which has excellent handling ease; and an electrical/electronic apparatus in which said thermally conductive silicone composition is used as a member. A thermally conductive silicone composition comprising (A) 100 parts by mass of either (a1) an organopolysiloxane having, in each molecule thereof, at least one alkoxysilyl-containing group bonded to a silicon atom and expressed by the general formula:


The present invention provides an adhesion promoter that can achieve excellent initial adhesion improvement effects towards various types of substrates, a curable organopolysiloxane composition containing this adhesion promoter, and a protective agent or adhesive composition for electric and electronic components. An adhesion promoter containing the following components (A) to (C) in a specific weight ratio, a curable organopolysiloxane composition containing this adhesion promoter, and a particular agent for electric and electronic components:(A) A reaction mixture of an organoalkoxysilane having an amino group and an organoalkoxysilane having an epoxy group; (B) An organic compound having at least two alkoxysilyl groups in a molecule and having a bond other than a silicone-oxygen bond between these silyl groups; (C) a silane containing an epoxy group or a partially hydrolyzed condensate thereof.


A production method of a liquid high-purity polyhydric alcohol derivative-modified silicone or a composition thereof, the method comprising: a capturing step of bringing into an impurity-containing composition containing a liquid polyhydric alcohol derivative-modified silicone and hydrophilic impurities originating from a polyhydric alcohol derivative, the polyhydric alcohol derivative being a hydrophilic modifier of the polyhydric alcohol derivative-modified silicone, into contact with solid particles capable of capturing the hydrophilic impurities, and then capturing the hydrophilic impurities with the solid particles; and a separating step of separating the polyhydric alcohol derivative-modified silicone and the solid particles. An object of the present invention is to provide a production method of a liquid high-purity polyhydric alcohol derivative-modified silicone and a composition thereof useful for production on a commercial scale.


Patent
Dow Corning | Date: 2017-09-13

The invention pertains to a method of passivating direct process solids and to passivated and quenched compositions resulting from said method. The method of passivating direct process solids according to the invention comprises combining direct process solids with a passivating composition comprising clay, base, and water. The passivated composition of the invention comprises direct process solids and a passivating composition comprising clay, base, and water. The quenched composition of the invention comprises the passivated composition, wherein the passivated composition has been held for a sufficient period of time for the reactive species from the direct process solids to be substantially quenched and/or oxidized.

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