General Electric Company

The University of Akron

Sadhan C Jana

Hua Wang

Avraam I Isayev

Gerrit De Wit

Irene Dris

Robert Walter Venderbosch

Coleen Pugh

Johannes Everardus Fortuyn

Gary Stephen Balch

Andrew Jay Salem

Joel Matthew Caraher

Uttandaraman Sundararaj

Marinus Cornelis Adriaan Van Der Ree

Christian Maria Emile Bailly

Prasad Raut

Frits Jan Viersen

Earl W Scott

Hamad Albehaijan

Nicole Swanson

Eduard Aarts Van Den Berg

Coupling agents useful for preparing vulcanized composition with filers such as silica and carbon black are provided. The coupling agents include fluorine substituted styrene compounds and styrene compounds containing a hydrocarbyloxysilane functional group. The coupling agents may be grafted onto polydiene polymers or added into a vulcanizable composition as an oligomer. The use of one or both of fluorine substituted styrene compounds and styrene compounds containing a hydrocarbyloxysilane functional group may improve the strength, rolling resistance, and/or cure rate of a vulcanized polymer compared to a vulcanized polymer without a coupling agent.

Polybutadiene graft copolymers as coupling agents for carbon black and silica dispersion in rubber compounds

A process for preparing a polymer composition useful as a prepreg comprises (a) melt-mixing at least one thermoplastic polymer above the glass transition temperature or melt temperature of the thermoplastic polymer with either (i) an uncured epoxy resin or (ii) an epoxy curing agent or a catalyst; (b) melt-mixing above the glass transition temperature or melt temperature of the thermoplastic polymer, the other of (i) an uncured epoxy resin or (ii) an epoxy curing agent or a catalyst to form a substantially uncured but essentially curable and/or polymerizable composition; (c) optionally forming a shaped product from the melt-mixed composition of (b); and (d) fast-curing and/or fast-polymerizing the optionally formed shaped product.

Melt-mixing thermoplastic and epoxy resin above Tg or Tm of thermoplastic with curing agent

A multi-layered article includes a first nonconductive layer containing a base polymer and, optionally, a nonconductive filler, and a second conductive layer, set forth so as to be a surface of the article and containing a base polymer and a conductive material and, optionally, a nonconductive filler, wherein the base polymers have essentially the same molecular structure of repeating units and wherein the mechanical properties of the first and second layers are essentially the same. Method for the production of such a multi-layered article including the steps of forming the layers using injection molding, extrusion, or blow molding techniques are also provided.

Multi-layered article having a conductive surface and a non-conductive core and process for making the same

Graft copolymer particles comprising an elastomeric base polymer such as polybutadiene and grafted chains of a thermoplastic, non-elastomeric polymer such as styrene-acrylonitrile are coagulated for isolation from aqueous emulsion by subjecting the emulsion to mechanical shear in the absence of chemical coagulants at a temperature greater than or equal to the glass transition temperature of the thermoplastic, non-elastomeric portion of the copolymer.

Method of coagulating and isolating graft copolymers from latices

A single extruder screw is presented which includes a plurality of equidistant undercut barriers disposed in a preselected pattern within the channel of an extrusion screw. The undercut barriers are disposed in the first metering stage and second metering stage and provide increased dispersive and distributed mixing for highly viscous difficult to blend materials. In another embodiment the single extruder includes a slotted blister ring, having slots and lands disposed thereon, positioned between the first metering stage and the vent zone to further increase the amount of mixing.

Single extruder screw for efficient blending of miscible and immiscible

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Fairlawn, OH, United States of America

Sadhan C Jana