Dow Corning Corporation

Toray Industries, Inc.

Gerald A Gornowicz

Chi-long Lee

Gary T Decker

Kuniaki Tobukuro

Gerardo Caporiccio

David Joseph Romenesko

Bernard Boutevin

Igor Chorvath

Thomas J Tangney

Hongxi Zhang

Jeffrey Paul Sage

Maris J Ziemelis

Arthur James Tselepis

Randall P Sweet

Lauren Marie Tonge

Linda Denise Kennan

Ryuzo Mikami

Jun Liao

Kermit S Kwan

Anil Kumar Saxena

Craig Gross

Thomas M Gentle

Yung K Kim

Stephen Clay Warren

Kevin Edward Lupton

Mark Hartmann

William R Pfister

Rocco Joseph Voci

Kim Struble

Gifford Neale Shearer

Frank P Larkin

Thomas Tangney

Gifford Shearer

A method is disclosed for preparing an elastomeric base composition comprising: (I) mixing (A) a fluorocarbon elastomer with (B) a compatibilizer, (C) an optional catalyst, (II) mixing the product of step (I) with (D) a silicone base comprising a curable organopolysiloxane, (E), an optional crosslinking agent, (F) a cure agent in an amount sufficient to cure said organopolysiloxane; and (III) dynamically vulcanizing the organopolysiloxane, wherein the weight ratio of fluorocarbon elastomer (A) to silicone base (B) in the elastomeric base composition ranges from 95:5 to 30:70. The cured rubber compositions obtained from the elastomeric base compositions herein have good fuel resistance properties.

Fluorocarbon elastomer silicone vulcanizates

Re-processable thermoplastic elastomer composition comprising (A) a thermoplastic polyurethane polymer, and (B) a silicone elastomer, wherein the weight ratio of the silicone elastomer to the thermoplastic polyurethane polymer is from 5:95 to 85:15, are disclosed along with methods for making such compositions.

Thermoplastic polyurethane-silicone elastomers

Toughened thermoplastic resins

There is disclosed a method for preparing a thermoplastic elastomer, said method comprising:

Thermoplastic silicone vulcanizates prepared by condensation cure

There is disclosed a method for preparing a thermoplastic elastomer composition which exhibits improved mechanical properties, said method comprising:

Thermoplastic silicone elastomers based on fluorocarbon resin

Thermoplastic silicone elastomers

Method for homopolymerization of polyorganosiloxane macromonomers having acryloxy or methacryloxy groups. A miniemulsion of a methacryloxy functional polydimethylsiloxane macromonomer was prepared by mixing the macromonomer with a surfactant(s), and subjecting it to a high shear device. The macromonomer was polymerized in the miniemulsion by using a free radical initiator at high temperature. The amount of unreacted macromonomer is very low.

Homopolymerization of acrylate or methacrylate endblocked

The invention relates to an improved distillation method wherein hexamethylcyclotrisiloxane is isolated from a crude blend thereof by mixing the crude blend with a hydrocarbon co-solvent having a normal boiling point of 125.degree. C. to 150.degree. C. and distilling the resulting mixture in an apparatus having a reboiler, a fractionating column and a condenser, whereby deposition of solid hexamethylcyclotrisiloxane in the condenser is eliminated.

Method for distilling hexamethylcyclotrisiloxane

The present invention describes uncured fluorocarbon elastomer base compositions and cured fluorocarbon elastomer compositions comprising a fluorocarbon elastomer, an amorphous silicone resin, and optionally a polydiorganosiloxane gum or a hydrocarbon polymer elastomer. The cured fluorocarbon elastomers typically contain additional components such as an acid acceptor, a cure agent, and a filler. The cured compositions have high strength, low temperature flexibility, high solvent resistivity, and low fuel permeability.

Fluorocarbon rubbers modified by silicone resins

A process for preparing a cured, fiber-reinforced composite comprises (I) blending an aminofunctional silicone resin containing monophenyl siloxy units and aminofunctional siloxy units, an epoxy resin and a hardener for the epoxy resin such as an aromatic diamine, (II) impregnating reinforcing fibers with the blend, (III) laying up at least two layers of the impregnated fibers, and (IV) heating the layed-up laminate at a temperature and time sufficient to cure the epoxy resin.

Preparing epoxy resin/hardener/aminopolysiloxane composite

A cured, fiber-reinforced composite is prepared by blending an amino-functional silicone resin containing monophenyl siloxy units and amino-functional siloxy units, an epoxy resin, a hardener for the epoxy resin and an aromatic oligomer such as a polyether optionally with reactive primary amine groups, impregnating fibers into said blend, laying up at least two layers of the impregnated fibers, and heating the layed-up laminate at a temperature and time sufficient to cure the epoxy resin.

Preparing epoxy resin/aminopolysiloxane/aromatic oligomer composite

A fiber-reinforced composite is prepared from fibers embedded in a composition comprising cured epoxy resin(s), an aromatic oligomer such as a polyether optionally with reactive primary amine groups, and an amino-functional silicone resin with monophenyl siloxy units and amino-functional siloxy units.

Epoxy resin/aminopolysiloxane/aromatic oligomer composite

This invention relates to fluorohydrocarbon polymers which are modified by the incorporation of substitiuents bearing a functional group such as vinyl, allyl, acrylate, alkoxysilane, amido, sulfonic acid salt, pyridine, carboxylic ester, and carboxylic salt. The functional groups may be further reacted to obtain branching, grafting, or crosslinking of the polymers. Copolymers of vinylidene fluoride and hexafluoropropene such as VITON A rubber and KYNAR FLEX 2801 plastomer, are typical of the class of fluorohydrocarbon polymers which are modified to obtain the new materials of this invention.

Modified fluorohydrocarbon polymers

A fiber-reinforced composite is prepared from fibers embedded in a cured epoxy resin(s) containing therein a amino-functional silicone resin with monophenyl siloxy units and amino-functional siloxy units.

Epoxy resin/aminofunctional polysiloxane fiber-reinforced composite

Growing community of inventors

Midland, MI, United States of America

Gerald A Gornowicz