Dow Corning Toray Company, Ltd.

Dow Toray Co., Ltd.

Dow Corning Asia Limited

Dow Corning Corporation

Dow Silicones Corporation

Itn Energy Systems, Inc.

Dow Corning Toray Silicone

Dupont Toray Specialty Materials Kabushiki Kaisha

Michitaka Suto

Haruhiko Furukawa

Tomohiro Iimura

Maki Itoh

Kazuhiro Nishijima

Takashi Sagawa

Yoshitsugu Morita

Tadashi Okawa

Akihiro Nakamura

Atsushi Sugie

Hidefumi Tanaka

Akihito Sakakibara-Saitoh

Makoto Yoshitake

Takuya Ogawa

Bizhong Zhu

Dimitris Katsoulis

Akihiko Kobayashi

Satoshi Onodera

Kasumi Takeuchi

Haruna Mizuno

Nobuo Kushibiki

Akito Hayashi

Takeaki Tsuda

Takakazu Hino

Debbie Bailey

Steven Swier

Randall Gene Schmidt

Masaaki Amako

Joseph H Armstrong

Takateru Yamada

Thomas Duncan Barnard

Lawrence M Woods

Hidekatsu Hatanaka

Herschel Henry Reese

Yukinari Harimoto

Katsuya Eguchi

Dimitris Elias Katsoulis

Adam C Tomasik

Rosine M Ribelin

Nicole Anderson

Sawako Inagaki

Gregg Alan Zank

Hojin Choi

Yutaka Oka

Mayumi Mizukami

Sunny Kim

Jeonggi Kim

Elias Dimitris Katsoulis

Tetsuyuki Michino

A photocurable liquid silicone composition, having a low viscosity that facilitates injection into a small gap, having a refractive index (pre-cure) that is high not only in a visible region but also in an infrared region, and that is particularly useful as a material for a device using an infrared LED light source, is provided. The composition comprises: (A): (A1) an organosilane or organopolysiloxane having 1 to 5 silicon atoms, having an alkenyl group, and having at least one monovalent functional group selected from aromatic groups and aralkyl groups, and/or (A2) an organopolysiloxane having 2 to 5 silicon atoms, having an alkenyl group, and not having a monovalent functional group selected from aromatic groups and aralkyl groups; (C) a compound having at least two silicon-bonded hydrogen atoms; and (D) a hydrosilylation reaction catalyst. Pre-cure, the refractive index of the entire liquid composition is ≥1.47, and the viscosity is ≤500 mPa·s.

Curable liquid silicone composition, cured product of curable liquid silicone composition, optical filler including curable liquid silicone composition, and display device including layer comprising cured product of curable liquid silicone composition

Provided is a curable silicone composition for a release agent which can release a release film from a silicone adhesive with low release force without reducing the adhesive strength of the silicone adhesive to other substrates upon releasing the release film. A release film or laminate having the small release force of the silicone adhesive is also provided. The curable silicone composition comprises: (A) a mixture of two or more fluoroalkyl group-containing organopolysiloxanes having a fluoroalkyl group and at least two alkenyl groups per molecule, wherein the contents of the fluoroalkyl groups differ from each other, and the two or more fluoroalkyl group-containing organopolysiloxanes are a combination of those which are not completely compatibilized at 25° C. when mixed in the absence of a solvent; (B) an organopolysiloxane having at least three silicon-bonded hydrogen atoms per molecule; (C) an effective amount of a hydrosilylation reaction catalyst; and (D) an organic solvent.

Curable silicone composition, release coating agent comprising said composition, release film obtained using said release coating agent, and layered product including said release film

A curable organopolysiloxane composition is provided which forms a pressure sensitive adhesive (PSA) layer having a relatively low storage elastic modulus (G') at low temperatures, excellent curability, and sufficient adhesion for practical use. A PSA layer-forming organopolysiloxane composition comprises: (A) a chain organopolysiloxane having alkenyl groups; (B) an organopolysiloxane resin which has a content of 9 moles or less of hydroxyl groups and the like is a mixture of (b1) an organopolysiloxane resin having a weight average molecular weight (Mw) of 4500 or more and (b2) an organopolysiloxane resin having a Mw of less than 4500; (C) an organohydrogenpolysiloxane; and (D) a hydrosilylation reaction catalyst. The mass ratio of component (B) to component (A) is within a range of 0.9 to 2.0, and the shear storage elastic modulus G′ at −20° C. of a PSA layer obtained by curing the composition is within a range of 0.01 to 0.75 MPa.

Organopolysiloxane composition for forming pressure sensitive adhesive layer, and use of same

Provided is a curable silicone composition, a cured product thereof, a laminate body, a manufacturing method thereof, and an optical device or optical display exhibiting excellent performance for use as a member where transparency is required such as for an optical display, a touch panel, or the like. A curable silicone composition, comprises: (A) an organopolysiloxane having in a molecule at least 2 alkenyl groups with 2 to 12 carbon atoms; (B) an organohydrogenpolysiloxane having at least 2 silicon-bonded hydrogen atoms per molecule; and (C) a hydrosilylation reaction catalyst. Component (B) is present in an amount such that the silicon-bonded hydrogen atoms in component (B) are 0.5 to 2 mol per mol of aliphatic unsaturated carbon-carbon bonds in component (A), and 2 to 17.5 mol % of the silicon-bonded organic groups in the curable silicone composition are aryl groups.

Curable silicone composition and cured product of same, multilayer body and method for producing same, and optical device or optical display

Provided is a curable silicone composition for a release agent which can form a release film having a silicone adhesive with a low release force even when thin and which does not reduce the adhesive strength of the silicone adhesive to other substrates upon releasing the release film. A release film and laminate are also provided. The curable silicone composition comprises: (A) a fluorine-containing organopolysiloxane mixture obtained by mixing the following components (A1) and (A2) at a mass ratio of 1/99 to 45/55: (A1) a fluoro(poly)ether modified organopolysiloxane having at least two alkenyl groups per molecule along with a fluoro(poly)ether-containing organic group; (A2) a fluoroalkyl group-containing organopolysiloxane having at least two alkenyl groups per molecule along with a fluoroalkyl group having 1 to 12 carbon atoms; (B) an organopolysiloxane having at least three silicon atom-bonded hydrogen atoms per molecule; (C) a hydrosilylation reaction catalyst; and (D) an organic solvent.

Provided is a curable silicone composition for a release agent which can form a release film having a silicone adhesive with a low release force even when thin and which does not reduce the adhesive strength of the silicone adhesive to other substrates upon releasing the release film. Also provided is a release film, laminate, and method of manufacture. The curable silicone composition comprises: (A) a fluorine-containing organopolysiloxane mixture obtained by mixing the following components (A1) and (A2) at a mass ratio of 1/99 to 99/1; (A1) a fluoro(poly)ether modified organopolysiloxane having at least two alkenyl groups per molecule along with a fluoro(poly)ether-containing organic group; (A2) a fluoroalkyl group-containing organopolysiloxane having at least two alkenyl groups per molecule along with a fluoroalkyl group represented by CF—CHCH—; (B) an organopolysiloxane having at least three silicon atom-bonded hydrogen atoms per molecule; (C) a hydrosilylation reaction catalyst; and (D) an organic solvent.

A curable organopolysiloxane composition is provided which forms a pressure sensitive adhesive (PSA) layer having a low storage elastic modulus (G′), excellent curability, and sufficient adhesion, along with applications thereof. A PSA layer-forming organopolysiloxane composition comprises: (A) a chain organopolysiloxane having alkenyl groups; (B) an organopolysiloxane resin wherein the weight average molecular weight (Mw) thereof is less than 4500 and the sum of the content of hydroxyl groups, etc. is 9 mole % or less; (C) an organohydrogenpolysiloxane; and (D) a hydrosilylation reaction catalyst; and optionally, (A′) a chain organopolysiloxane which does not contain a carbon-carbon double bond-containing reactive group in the molecule. The mass ratio of the organopolysiloxane resin (B) to the chain organopolysiloxane (A) is within a specific range and the shear storage elastic modulus G′ at −20° C. of a PSA layer obtained by curing the composition is within a range of 0.01 to 1.0 MPa.

Provided is: a resin sheet having excellent characteristics as an optical member and exhibiting excellent performance when used in a light emitting device or the like; and a manufacturing method thereof. A curable silicone composition, comprises: (A) (a1) a straight chain or partially branched organopolysiloxane having an alkenyl group, and (a2) an organopolysiloxane having an alkenyl group, including an organopolysiloxane resin having an alkenyl group, comprising a certain amount of branched siloxane units; (B) (b1) a straight chain or partially branched organohydrogenpolysiloxane having a silicon-bonded hydrogen atom at an end of a molecular chain, (b2) an organohydrogenpolysiloxane, including a organohydrogenpolysiloxane resin, having a certain amount of branched siloxane units; and (C) a hydrosilylation reaction catalyst.

Curable silicone composition and cured product thereof, layered product and production method therefor, and optical device or optical display

A method for producing a silicone-based adhesive is disclosed. The method comprises: (1) applying a silicone composition (I) to one surface of a peelable substrate, and then forming a silicone layer (I) by curing or drying the silicone composition (I); and (2) applying a silicone composition (II) to a surface of the silicone layer (I), and then forming the silicone-based adhesive by curing the silicone composition (II). The silicone composition (I) contains a silicone resin. The silicone composition (II) either does not contain the silicone resin or if contained, its content amount is lower than that in the silicone composition (I). The method is useful for producing a silicone-based adhesive with low peel resistance from a peelable substrate even with a low modulus.

Method for producing silicone-based adhesive

Disclosed is an adhesive film. The adhesive film has a silicone adhesive layer on one surface or both surfaces of a substrate film. A silicone adhesive material is used to form the silicone adhesive layer. The silicone adhesive material has 120 to 380% of an elongation at break (tensile speed of 300 mm/min, temperature of 25&#xb0; C.) specified in JIS K 6251, and 1.8&#xd7;10to 4.5&#xd7;10Pa of a shear storage modulus (frequency of 10 Hz, temperature of 25&#xb0; C.). The adhesive film generally has good wettability to the surface of an adherend and in general can be easily attached without creating air bubbles, to the extent that, even if air bubbles are created, the air bubbles can be easily dissipated. Further, even though the adhesive film is generally not easily peeled, peeling is generally possible with a small adhesive force during high speed peeling.

Adhesive film

Disclosed is a curable silicone composition. The composition comprises: (A) an organopolysiloxane having at least two alkenyl groups and at least one aryl group in each molecule; (B) a polyoxyalkylene compound represented by the general formula: XO&#x2014;(CHO)(CHO)(YO)&#x2014;X, wherein, each X represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an acryl group, or a methacryl group, provided that at least one X in each molecule is the alkenyl group, the acryl group, or the methacryl group, Y represents a divalent hydrocarbon group, n represents an integer of 3 to 6, p and q are integers satisfying: 2&#x2264;p&#x2264;100 and 0&#x2264;q&#x2264;50, and r represents 0 or 1; (C) an organopolysiloxane having at least two silicon bonded hydrogen atoms in each molecule; and (D) a catalyst for a hydrosilylation reaction. The composition forms a cured product having improved properties.

Curable silicone composition, cured product thereof, and optical display

A hydrosilylation curable polysiloxane comprising at least one of units of formula (I) and units of formula (II), wherein Ar is C-Caryl, R1 is C-Calkenyl, and R, R, Rand Rindependently are C-Chydrocarbyl. 

Hydrosilylation curable silicone resin

A flexible laminate, in which it is possible to achieve both flexibility and durability, is disclosed. A flexible display using the flexible laminate is also disclosed. The flexible laminate includes one or more units of a laminate structure in which two hard layers interposing one or more intermediate layers therebetween are bonded together as one unit. The intermediate layer has viscoelasticity. When the flexible laminate is bent, a neutral plane is formed in each inner portion of the hard layers that are bonded together to interpose the intermediate layer therebetween.

Flexible laminate having viscoelasticity and flexible display using same

A flexible laminate for which increased flexibility and improved durability can coexist, and a flexible display provided with same, are disclosed. The flexible laminate has at least one unit of a laminated structure in which two hard layers closely adhere to each other with at least one intermediate layer therebetween. When the flexible laminate is bent, neutral planes are formed inside each of the hard layers that closely adhere to each other with the intermediate layer therebetween. The flexible laminate satisfies the following expression: a&#xd7;ln(tan &#x3b4;&#xd7;E/0.01)&#x2265;100. In the expression, a is any value ranging from 200 to 2,000, tan &#x3b4; represents a loss factor for a substance configuring the intermediate layer, and Erepresents an elastic modulus (MPa) of the substance configuring the intermediate layer.

Flexible laminate and flexible display provided with same

The present invention relates to a curable silicone composition comprising: (A) a diorganopolysiloxane having at least two alkenyl groups in a molecule, (B) at least two types of resinous organopolysiloxanes having different mass average molecular weights, (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, and (D) a hydrosilylation reaction catalyst. The curable silicone composition enables the production of an optical semiconductor device in which the marked viscosity elevation of the resulting composition can be inhibited, in which the fluidity and packing properties are outstanding and that has outstanding gas barrier properties when used as a sealant, and in which the device has outstanding initial optical output efficiency even when organopolysiloxane resin is blended in order to form cured product with moderate hardness and strength.

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

Growing community of inventors

Ichihara, Japan

Michitaka Suto