Dow Corning Corporation

Dale E Hauenstein

Paul Joseph Popa

Linda Denise Kennan

Thomas M Gentle

David Joseph Romenesko

Caibao Qian

William James Schulz, Jr

Binh Thanh Nguyen

Don Lee Kleyer

Harold L Vincent

Lori Ann Stark-Kasley

Arnold W Lomas

Kevin Edward Lupton

Sean P Davern

The present invention relates to a method for processing a thermoplastic resin composition by extruding the composition through a nickel die to provide an extrudate having a low degree of surface roughness, said composition comprising

Method for extruding thermoplastic resins

There is disclosed a method for treating and protecting a substrate, said method comprising coating the surface of said substrate with a composition comprising a blend of

Method for treating plastic, leather or rubber substrates

There is disclosed a polyolefin composition which can be extruded at relatively high rates to provide extrudate having a low surface roughness (sharkskin), said composition comprising (A) 100 parts by weight of a polyolefin resin; and (B) 0.01 to 1 part by weight of a hydroxy-functional diorganopolysiloxane process aid, said diorganopolysiloxane having a number average molecular weight of at least 10,000. In particularly preferred embodiments, a hydroxy-functional diorganopolysiloxane in combination with a low density polyethylene is used as a process aid for linear low density polyethylene.

Polyolefin composition containing diorganopolysiloxane process aid

There is disclosed a polyolefin composition which can be extruded at relatively high rates to provide extrudate having improved hydrophobicity, said composition comprising (A) 100 parts by weight of a polythylene resin; and (B) 1 to 5 parts by weight of an interactive diorganopolysiloxane process aid, said diorganopolysiloxane having a number average molecular weight of at least 10,000. In particularly preferred embodiments, an interactive diorganopolysiloxane in combination with a low density polyethylene is used as a process aid for linear low density polyethylene.

Low density polyethylene modified with silicone materials

There is disclosed a polyolefin composition which can be extruded at relatively high rates to provide extrudate having improved hydrophobicity, said composition comprising (A) 100 parts by weight of a thermoplastic resin; and (B) at least 1 part by weight of an interactive diorganopolysiloxane process aid, said diorganopolysiloxane having a number average molecular weight of at least 10,000.

Organic polymers modified with silicone materials

A composition is disclosed, said composition comprising (A) a polydimethylsiloxane having a viscosity greater than about 2 cS at 25.degree. C.; and (B) a polyisobutylene oligomer having a number average molecular weight of about 200 to about 2,300 and having at least one end terminated with a 2-methylpropenyl group.

Blended composition of 2-methylpropenyl-terminated polyisobutylene with

The present invention relates to a fluid comprising a compatible blend of (A) a polydimethylsiloxane and (B) a polybutylene wherein the viscosities of these two components are substantially identical such that the viscosity of the blend is less than the viscosity of either component (A) or (B), each viscosity being measured at the same operating temperature and pressure. This synergistic viscosity reduction is enhanced when particular moieties are present in the polydimethylsiloxane and/or polybutylene components and as the polydispersity of the polydimethylsiloxane is increased.

Silicone-polybutylene blends

The present invention relates to a peroxide-curable silicone rubber composition which, when cured, exhibits a reduced modulus and improved tear strength relative to prior art systems without sacrificing other desirable properties, such as high tensile strength of the cured rubber or storage stability of the uncured rubber base, said composition comprising:

Curable silicone rubber composition

A composition is disclosed, said composition comprising

Epoxy-terminated polyisobutylene-polydimethylsiloxane compositions

An aqueous emulsion composition suitable for treating cellulosic or masonry surfaces to render them water repellent is disclosed, said composition comprising:

Water repellent compositions

This invention discloses a method of controlling hydrosilylations in a reaction mixture by controlling the solution concentration of oxygen in the reaction mixture, relative to any platinum present in the reaction mixture. This invention further discloses a method for controlling isomerization in linear or branched alkenyl compounds having at least 4 carbon atoms during a hydrosilylation reaction by introducing a controlled amount of oxygen into the alkenyl compounds during the hydrosilylation. This invention further discloses a method for producing dicycloalkylsubstituted silanes by reacting a halo-or alkoxy-silane with a unsaturated cycloalkenyl compound in the presence of oxygen and a hydrosilylation catalyst.

Method for controlling hydrosilylation in a reaction mixture

An efficient method for preparing an oximosilane-functional vinylic copolymer is disclosed wherein the corresponding alkoxysilane-functional vinylic copolymer is reacted with an organoketoxime in a dry environment. The oximosilane-functional vinylic copolymers produced by the method of the present invention find utility in moisture-curable coating systems.

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Midland, MI, United States of America

Dale E Hauenstein