Momentive Performance Materials Gmbh

Sandeep Naik

Anubhav Saxena

Shreedhar Bhat

Pranabesh Dutta

Vinu Krishnan Appukuttan

Monjit Phukan

Masanori Takanashi

Raveendra Mathad

Chetan Shah

Kenrick M Lewis

Tiberiu Mircea Siclovan

Pranav Ramchandra Joshi

Alok Sarkar

Amar Pawar

Meenal Mehra

Yun Huang

Kwanho Chang

Arindam Sannigrahi

Debarshi Dasgupta

Dian Liu

Shrutisagar D Haveli

A process for producing a silicone pressure sensitive adhesive is shown and described herein. The process comprises reacting a MQ silicone resin with a polydiorganosiloxane in the absence of a solvent. The MQ silicone resin is a solid, solventless MQ resin. The reaction may be conducted in the presence of a catalyst, a chain extension reagent, or a combination thereof, and the resulting pressure sensitive adhesive can be dissolved in a solvent and the solids content adjusted. The present method provides a manner to provide a cleaner adhesive material that is free of unwanted materials such as aromatic solvents and also substantially free of cyclic siloxane impurities.

Silicone pressure sensitive adhesive and method of making the same

Provided is a polymer of the formula: and compositions comprising the same. The polymers comprise a cyclic unsaturated group (Z) within the siloxane polymer backbone. The polymers have been found to exhibit good thermal conductivity and may find utility in a variety of applications.

Silicone polymer

Provided is a silicone polymer of the Formula (I):MMMDDDTTTQ.

Thermal conducting silicone polymer composition

Silicone polymer and composition comprising the same

A hydrophilic siloxane copolymer of siloxane and hydrophilic organic monomer/s The copolymers can be functionalized to make them capable of undergoing further polymerization by thermal or actinic radiations. The hydrophilicity of these polymers can be varied by varying the siloxane versus organic monomer ratio thereby going from water dispersible to soluble states. The siloxane content can be tuned accordingly in order to provide moderate to high oxygen permeability. These copolymers can be used as a single component curable composition which results in hydrogels to minimize the presence of leachable components thus by reducing the processing cost. The polymers may also find applications in personal care formulations as copolymers, film-formers, hydrogels, coating, emulsions/latex etc.

Silicone-based hydrophilic copolymer and hydrogel compositions comprising the same

A hydrophobic hybrid organosiloxane nano latex is provided as the copolymerizate of:

Composition comprising organosiloxane nano latex and preparation of organosiloxane nano latex

A thermally conductive silicone composition is shown and described herein. The thermally conductive silicone composition comprises (A) an ionically modified siloxane, and (B) a thermally conductive filler comprising a first filler and a second filler, where the first filler and/or the second filler comprises a plurality of filler types, the plurality of filler types differing from one another in terms of particle size and/or morphology. The ionically modified siloxane may function as a dispersing aid or wetter for efficient dispersion of thermal conducting organic and inorganic fillers to achieve high thermal conductivity.

Thermal interface composition comprising ionically modified siloxane

A linear silicone polymer suitable for use in producing homopolymers, copolymers, polymerized emulsions, latex compositions, and hydrogel polymer films. In one aspect, a hydrophilic silicone monomer is of the Formula 1:WABW&#x2003;&#x2003;(1)Where, A is a divalent block comprising a silicone-containing pendant group. In one embodiment, the silicone-containing pendant group comprises polyalkylene oxide groups. The structure of the polymer can be controlled and tuned to provide a material with excellent wettability and oxygen permeability. The polymers are suitable for use in a variety of applications including in providing a film for forming contact lenses.

Organo-modified silicone polymers

A hydrophilic silicone polymer composition suitable for use in producing hydrogel polymer films disclosed. In one aspect, a hydrophilic silicone monomer is of the Formula 1:AB&#x2003;&#x2003;(1)where A is a divalent block comprising a silicone-containing pendant group. In one embodiment, the silicone-containing pendant group comprises polyalkylene oxide groups. The structure of the polymer can be controlled and tuned to provide a material with excellent wettability and oxygen permeability. The polymers are suitable for use in a variety of applications including in providing a film for forming contact lenses.

Organo-modified silicone polymers and hydrogels comprising the same

A composition comprising a carbocyclic group and a hydrophilic moiety attached thereto an alpha, beta-unsaturated organosilicon compound. Such compounds are useful in developing water absorbing silicone-hydrogel films. Silicone-hydrogel films provide increased oxygen to pass through a lens or other treated materials.

Hydrophilic silicone composition

A composition including an actinic radiation or thermally curable polyorganosiloxane ionomer having one or more reactive groups, for example, vinyl, acrylate, epoxy groups.

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Bengaluru, India

Sandeep Naik