Dow Corning Corporation

Dow Silicones Corporation

Gerald Kenneth Schalau, Ii

Xavier Jean-Paul Thomas

Robert O Huber

Simon Toth

Victor Albert Raul

David Clayton Gantner

Gary Lee Loubert

Anne K Shim

Katherine L Ulman

John Joseph Kennan

Xavier Thomas

Linda Sue Nartker

Isabelle Van Reeth

Chana Wilson Evans

Kathryn Elizabeth Messner

Concettina Scavuzzo

Janelle L Cabala

Silicone acrylate copolymer composition, namely, silicone resin-acrylate copolymers and methods of preparing the same. The silicone acrylate composition may include a silicone resin coupled with an acrylate polymer via a linking group. The silicone acrylate composition may be formed by preparing an acrylate or a (meth)acrylate functional resin and carrying out acrylate polymerization in the presence of a functionalized resin. A silane-functional acrylate polymer may be prepared, followed by a reaction to couple a resin to the silane-functional acrylate polymer. The resulting copolymer may then be used as desired, e.g., added to a silicone and acrylate mixture to create a non-separating blend.

Silicone acrylate compositions and methods of preparing the same

A multi-phase silicone acrylic hybrid visco-elastic composition prepared by polymerizing an ethylenically unsaturated monomer and a silicon-containing pressure sensitive adhesive composition comprising acrylate or methacrylate functionality in a first solvent in the presence of an initiator, removing the first solvent, and adding a second solvent to form the multi-phase silicone acrylic hybrid visco-elastic composition. Alternatively, a multi-phase silicone acrylic hybrid visco-elastic composition prepared by polymerizing an ethylenically unsaturated monomer and a silicon-containing pressure sensitive adhesive composition comprising acrylate or methacrylate functionality in a first solvent in the presence of an initiator, adding a processing solvent having a higher boiling point than the first solvent, applying heat to selectively remove a majority of the first solvent, removing the processing solvent, and adding a second solvent to form the multi-phase silicone acrylic hybrid visco-elastic composition. The phase arrangement of the multi-phase silicone acrylic hybrid visco-elastic compositions is selectively controlled by selection of the second solvent.

Multi-phase silicone acrylic hybrid visco-elastic compositions and methods of making same

Silicone paste compositions are disclosed by combining a silicone organic elastomer gel with water or a hydrophilic solvent. The silicone paste compositions may further contain a personal or healthcare active. The silicone organic elastomer gel is prepared by reacting in a carrier fluid an organohydrogensiloxane with two polyoxyalkylenes, the first polyoxyalkylene having aliphatic unsaturation at both each molecular termini, and the second polyoxyalkylene having aliphatic unsaturation at one molecular terminal.

Silicone paste compositions

A method for increasing the adherence of a silicone gel to a substrate using a primer material. The method is particularly useful for adhering a medical prosthesis to a human or animal body.

Method for adhering silicone gels to plastics

A controlled-release composition for topical application to a substrate includes an oil-in-water emulsion and an active agent incorporated into the oil-in-water emulsion. The oil-in-water emulsion is substantially free of lipophilic solvent and is formed by mechanical inversion of a water-in-oil emulsion. The water-in-oil emulsion includes a silicone component, a surfactant, and water. A method of delivering the active agent to the substrate provides the oil-in-water emulsion and incorporates the active agent into the oil-in-water emulsion for delivery of the active agent to the substrate upon application of the oil-in-water emulsion to the substrate.

Controlled-release composition for topical application and a method of delivering an active agent to a substrate

A silicone adhesive composition used for adhering a device or a substance to a wet surface contains (i) a silicone resin that is cohydrolysis product of a trialkyl hydrolyzable silane and an alkyl silicate in which the cohydrolysis product contains a plurality of silicon-bonded hydroxy groups; (ii) a linear organopolysiloxane fluid containing terminal silicon-bonded hydroxy groups having a viscosity above 200,000 mm/at 25&#xb0; C.; (iii) a trialkylsiloxy terminated polyorganosiloxane fluid having a viscosity of 100,000-600,000 mm/at 25&#xb0; C.; (iv) a water soluble muco-adhesive polymer selected from the group consisting of a poly(ethylene oxide) polymer having a molecular weight of 100,000 to 8,000,000, an acrylic acid polymer having a molecular weight of 500,000 to 4,500,000,000, and a hydroxyethylcellulose polymer having a molecular weight of 90,000 to 1,300,000,000; and optionally, (v) a solvent selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons, esters, volatile linear and cyclic silicone compounds. Other components such as a silicone polyether, a silicone wax, a drug, an excipient, and/or an active ingredient can also be included.

Silicone adhesive for adhesion to wet surfaces

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Freeland, MI, United States of America

Gerald Kenneth Schalau, Ii