Dow Corning Corporation

Dow Corning Toray Company, Ltd.

Dow Silicones Corporation

Dow Toray Co., Ltd.

Dow Corning Korea Ltd.

Kent R Larson

Haruhiko Furukawa

Takuya Ogawa

Peter Cheshire Hupfield

Keiji Wakita

Kouichi Ozaki

Eiji Kitaura

Wataru Nishiumi

Hong Sub Kim

Myron T Maxson

Masayuki Onishi

James Steven Tonge

Hiroshi Fukui

Gerald Lawrence Witucki

Toyohiko Fujisawa

Lawrence Joseph Rapson

Donnie Ray Juen

Junying Liu

Afrooz A Zarisfi

Shengqing Xu

Son Thanh Phan

Joan M Donatelli

Daniel F McMahon

Joel McDonald

Kristen E Steinbrecher

Matt D Dowland

Kelly J Messing

Daesup Hyun

The present invention relates to organopolysiloxane compositions which exhibits both UV and moisture initiated curing.

Dual cure organopolysiloxane composition

The present invention provides a curable organopolysiloxane composition capable of producing a cured article that can be used as a transducer and provided with excellent mechanical characteristics and/or electrical characteristics. The present invention also relates to a novel curable organopolysiloxane composition for transducer use comprising a curable organopolysiloxane composition, dielectric inorganic fine particles having a specific dielectric constant of greater than or equal to 10, and fine particles having a specific dielectric constant of less than 10.

Curable organopolysiloxane composition for transducers and applications of such curable silicone composition for transducers

The present invention provides a curable organopolysiloxane composition capable of producing a cured article that can be used as a transducer and provided with excellent mechanical characteristics and/or electrical characteristics. The present invention also relates to a novel curable organopolysiloxane composition for transducer use comprising a curable organopolysiloxane composition and a compound having a highly dielectric functional group.

A stable thermal radical curable silicone composition is provided that comprises (I) a clustered functional polyorganopolysiloxane having one or more radical curable groups selected from an acrylate group and a methacrylate group; (II) a reactive resin and polymer; (III) a radical initiator; (IV) a moisture cure initiator; and (V) a crosslinker. The reactive resin and polymer includes (a) an organopolysiloxane polymer and (b) an alkoxy-functional organopolysiloxane resin. The alkoxy-functional organopolysiloxane resin comprises the reaction product of a reaction of (i) an alkenyl-functional siloxane resin, (ii) an alkoxysilane-functional organosiloxane, and (iii) an endcapper in the presence of (iv) hydrosilylation catalyst. The stable thermal radical curable silicone composition can be utilized for electronics applications.

Stable thermal radical curable silicone adhesive compositions

A composition useful for adhering polysulfide sealant to silicone sealant or to silicone sealant contaminated surfaces is obtained by mixing 1 part by weight of alkoxy functional, titanate catalyzed silicone sealant with from 0.1 to 40 parts by weight of polysulfide sealant.

Bonding polysulfide sealant to silicone

Oligomers wherein phenylalkylsiloxane units comprise at least a portion of the repeating units increase the ability to penetrate porous substrates that is exhibited by crosslinkable liquid organosiloxane compositions containing polyorganosiloxanes when the oligomer exhibits limited compatibility with the crosslinkable polyorganosiloxane(s) present in the curable organosiloxane composition.

Organosiloxane compositions exhibiting increased penetration into porous

A room temperature curable organosiloxane composition, containing an alkenyl-containing polyorganosiloxane, an organohydrogensiloxane, a platinum catalyst, a methylvinylcyclosiloxane and an acetylenic alcohol, which exhibits a long working time and a fast cure time.

Fast curing organosiloxane compositions with long working times

Liquid adhesion-promoting compositions for cohesively bonding organosiloxane materials to organic polymers comprise (A) a copolymer derived from at least one ethylenically unsaturated organic compound and at least one silane containing an ethylenically unsaturated organic group and at least two silicon-bonded hydrolyzable groups per molecule, (B) an organohydrogensiloxane, (C) an aminosilane containing at least 2 alkoxy or other hydrolyzable groups, and (D) an amount of an organic liquid sufficient to solubilize ingredients A, B and C of said composition and achieve the desired viscosity.

Compositions for bonding organosiloxane elastomers to organic polymers

Adhesion promoting compositions for bonding a layer of organic polymer to a layer of organosiloxane elastomer during curing of the elastomer by a platinum group metal-catalyzed hydrosilation reaction comprise (a) a copolymer containing repeating units derived from at least one ethylenically unsaturated organic compound and at least one silane containing an ethylenically unsaturated organic group and at least two silicon-bonded hydrolyzable groups per molecule, and (b) an organohydrogensiloxane containing an average of at least three silicon-bonded hydrogen atoms per molecule. If the adhesion promoting composition is to be used with an elastomer prepared by curing an organosiloxane elastomer at temperatures below about 80 degrees C., the adhesion promoting composition includes an alkyl orthosilicate and an organotitanium compound.

Laminates comprising organosiloxane elastomers and organic polymers and

Low concentrations of a liquid silanol terminated polydiorganosiloxane with a number average molecular weight less than about 1000 extend the working time of tin-catalyzed moisture curable organosiloxane compositions without substantially decreasing the cure rate of the composition or adversely affecting the physical properties of cured materials, particularly elastomers, prepared using these compositions.

Moisture curable organosiloxane compositions exhibiting extended

Organosiloxane compositions curable by a platinum-catalyzed hydrosilation reaction contain as the adhesion promoter a silane comprising an silicon-bonded alkenyl radical containing at least five carbon atoms and at least one alkoxy group. The silane or a hydrolysis-condensation product thereof is optionally used in combination with a catalyst that promotes reaction of the silane with groups present on the surface of the substrate to which bonding is desired.

Organosiloxane compositions exhibiting improved bonding to substrates

A composition useful for adhering polysulfide sealant to silicone sealant or to silicone sealant contaminated surfaces is obtained by mixing 1 part by weight of alkoxy functional, titanate catalyzed silicone sealant with from 0.1 to 40 parts by eight of polysulfide sealant.

Bonding polysulphide sealant to silicone

An optical laminate having improved resistance to delamination upon exposure to moisture consists essentially of a layer of organosiloxane composition, a primer layer, and a layer of organic elastomer. The organosiloxane composition comprises a polydiorganosiloxane gum containing at least two ethylenically unsaturated hydrocarbon radicals per molecule, an organohydrogensiloxane containing at least two silicon-bonded hydrogen atoms per molecule, and a platinum containing hydrosilation catalyst. The primer comprises a specific mixture of organosilicone compound, silane copolymer, organohydrogensiloxane, and solvent being as least 50 percent of an ethylenically unsaturated alcohol. The organic elastomer is selected from a polyvinylbutyral or polyurethane of the types used for optical laminates.

Growing community of inventors

Midland, MI, United States of America

Kent R Larson