Dow Corning Corporation

Dow Silicones Corporation

Dow Corning Toray Company, Ltd.

Jacob William Steinbrecher

Michael Raymond Strong

Wei Rong

Stanton James Dent

Emil Radkov

Harold W Brunt, Jr

Yoshitsugu Morita

Makoto Yoshitake

Tomohiro Iimura

Hiroaki Yoshida

Fumito Nishida

Afrooz A Zarisfi

Yusuke Miyamoto

Joel McDonald

Michelle R Cummings

Clinton Whiteley

Bradley W Tuft

Bradley Tuft

An injection moldable composition, comprising: A) a silicone resin (I) [RSiO][RRSiO][SiO], wherein R, R, and Rare hydrocarbyl, hydrocarbyloxy, or hydroxyl, at least one of Ror Ris alkenyl, subscripts a, b, and c are each &#x3e;0 and a+b+c=1, B) 0 to 90% (w/w), based on the weight of A) and B), of a silicone resin (II) [RSiO][SiO]wherein Ris hydrocarbyl, hydrocarbyloxy, or hydroxyl, at least one of Ris alkenyl, subscripts d and e are each &#x3e;0, and d+e=1, C) a siloxane polymer having formula (III), [RSiO]RRSiO]. wherein Rare hydrocarbyl or hydroxyl, at least one of Ris alkenyl, subscripts f and g are each &#x3e;0, and f+g=1, D) a silicone crosslinker having at least two silicon-bonded hydrogen atoms per molecule, and E) a hydrosilylation catalyst, wherein the ratio of silicon-bonded hydrogen atoms to carbon-carbon double bonds is from 1.2 to 2.2.

Injection moldable silicone composition

A copolymer composition is provided that is formed as the reaction product of (I) a cured polyorganosiloxane intermediate having repeating Si&#x2014;O&#x2014;Si units and at least one Si&#x2014;OH functional group and (II) a polyfluoropolyether silane. The cured polyorganosiloxane intermediate has a surface having a water contact angle ranging from 40&#xb0; to 90&#xb0; as measured by ASTM 5946-04. In certain embodiments, the copolymer composition provides improved dust resistance as compared with cured polyorganosiloxanes from which the copolymer composition is formed.

Fluorinated copolymer compositions and associated methods, uses and articles

This invention relates to a curable silicone composition comprising: (A) a straight-chain organopolysiloxane having at least two alkenyl groups in a molecule; (B) an organopolysiloxane represented by the following average unit formula: (RSiO)(RSiO)(RSiO)(SiO)(XO)wherein, Reach independently represent an alkyl group having from 1 to 12 carbons, an alkenyl group having from 2 to 12 carbons, an aryl group having from 6 to 20 carbons, an aralkyl group having from 7 to 20 carbons, or a group in which some or all of the hydrogen atoms of these groups are substituted with halogen atoms, with the proviso that at least two Rin a molecule are the alkenyl groups, X is a hydrogen atom or an alkyl group, a is a number from 0 to 0.3, b is 0 or a positive number, c is a positive number, d is a positive number, e is a number from 0 to 0.4, a+b+c+d=1, c/d is a number from 0 to 10, and b/d is a number from 0 to 0.5; (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule; (D) a cerium-containing organopolysiloxane; and (E) a hydrosilylation reaction catalyst. The curable silicone composition does not develop cracks due to thermal aging and can form a cured product having little yellow discoloration.

Curable silicone composition, cured product thereof, and optical semiconductor device

An opto-physical material comprises a curable matrix composition and an effective amount of an ultraviolet light additive dispersed therein. The opto-physical material has a refractive index ranging from 1 to 1.8 at 589 nm wavelength and a light transmission value of 30% or less at any wavelength in the ultraviolet light spectrum. In addition, a test value of an optical physical property for the opto-physical material does not differ by more than 5% from a predetermined value of the optical physical property when the predetermined value is measured under the same measurement conditions for an opto-physical material comprising a comparative curable matrix composition lacking the ultraviolet light additive, wherein the optical physical property is selected from color shift in the visible light spectrum, light diffusivity at any wavelength in the light spectrum, light transmission in the visible light spectrum, and combinations thereof.

Selective light blocking opto-physical materials and optical devices including such selective light blocking opto-physical materials

A reflector for reflecting light emitted by an LED light source and a method of forming the same are provided. The reflector has a unitary silicone body having a first end and a second end opposite the first end. The unitary silicone body has an inner surface extending between the first and second ends. The inner surface defines a first aperture at the first end for receiving the LED light source. The inner surface defines a second aperture at the second end for permitting light emitted from the LED light source to escape the unitary silicone body. The inner surface has a maximum inner diameter between the first and second ends. The inner surface has an inner diameter at the second end that is less than the maximum inner diameter.

Reflector for an LED light source

A composition comprises (A) a silicone resin; (B) an organosilicon compound; (C) a hydrosilylation catalyst; and (D) a flame retardant component comprising aluminum hydroxide. The composition further comprises (E) a reflective component different from component (D) and comprising titanium dioxide. The composition forms articles having excellent physical properties, including reflectance, flame retardant properties, and self-extinguishing properties. An article formed from the composition and a method of forming a molded article are also provided.

Composition for forming an article having excellent reflectance and flame retardant properties and article formed therefrom

Reflector

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Midland, MI, United States of America

Jacob William Steinbrecher