General Electric Company

Quadrant Epp Ag

Other

Cmt Materials, Inc.

Richard W Campbell

Kenneth F Miller

Peter W Van Es

Theodorus O De Vroomen

Clayton B Quinn

Willem F Borman

Luca P Fontana

Christianus A Claesen

Stephan Glander

Scott Howard Williams

Noel J Tessier

Kirk L Kimbel

Chi Way Lau

Adrianus A Claesen

Clayton V Quinn

Luca P Fontane

Internal components of plasma reactors are composed of a toleratable, ceramic filled plasma-useful polymer such as a high temperature engineering thermoplastic, preferably a polyamideimide or polybenzimidazole. The parts exhibit a low erosion rate upon exposure to plasma at low pressure.

Process for plasma treatment employing ceramic-filled polymer composite parts

Internal components of plasma reactors are composed of a toleratable, ceramic filled plasma-useful polymer such as a high temperature engineering thermoplastic, preferably a polyamideimide. The parts exhibit a low erosion rate upon exposure to plasma at low pressure.

Process for plasma treatment employing ceramic-filled polyamideimide composite parts

The present invention provides an improved syntactic foam plug for plug assist thermoforming wherein such plug is composed of a thermoplastic material having a relatively high melting and/or glass transition temperature. Accordingly, the subject invention encompasses diminishing or removing the undesirable characteristics of thermoset syntactic plugs while increasing the ease by which these articles may be constructed for a given use, by forming such plugs from syntactic foams containing thermoplastics.

Method of thermoforming using a syntactic foam plug

Resins suitable for use in compression molding processes are prepared by mixing between about 10 and 30 weight % of chopped partially carbonized fibers, i.e. fibers having a carbon content of between about 70 to 95% by weight and an average size of about 100 &mgr;m, with compression grade molding resins. Typically the compression grade molding resins are about 100 &mgr;m When chopped carbon fibers of reduced conductivity are used the curve obtained by plotting the resistivity against the concentration of carbon fibers is less steep in the critical regions of interest (i.e., between about 10 and 10 and between about 10 and 10 ) than is the curve obtained when high conductivity fibers are used. It has been observed that even if some dielectric breakdown occurs, the connected fibers are not as conductive and the effect has been found not to be as significant as is the case with the usual carbon fibers which have maximized conductivity.

Electrostatic dissipative plastics adapted particularly for use at elevated temperatures

A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.

Copolyestercarbonate composition derived from dihydric phenol, carbonate

Copolyestercarbonate composition derived from dihydricphenol, carbonate

Polyester-carbonate resins blended with a fibrous reinforcing agent, an impact-modifier and optionally a flame-retarding agent are used to mold articles such as structural panels. The articles exhibit improved impact-resistance without significant loss of elastic modulus and fire-retardancy.

Polyester-carbonate resin compositions of improved impact-resistance

Phenolic compound end capped polyester carbonate

A flame resistant electrically insulating multilayer material is described herein, in which a flame resistant core which may be comprised of coextrudable, thermoformable thermoplastic materials has at least one electrically insulating outer layer attached thereto. Preferred polymeric materials forming the core include blends of polycarbonates with halogen-containing polycarbonates. Each outer layer typically may be formed from polycarbonates and linear polyesters. The multilayer material may be shaped to surround and shield any sensitive device requiring protection from high voltage arcing or fire.

Flame resistant electrical insulating material

Novel thermoplastic block carbonate-carboxylate copolyesters useful in films and molded articles are prepared by the interesterification of (a) high molecular weight aromatic carbonate polymers and (b) a copolyester of a linear aliphatic dicarboxylic acid and, optionally, an aromatic dibasic acid such as terephthalic or isophthalic acid with one or more straight or branched chain dihydric aliphatic glycols, or with a block copolyester of poly(1,4-butylene terephthalates) and polybutylene oxide or an aromatic/aliphatic polyester, a mixture of poly(1,4-butylene terephthalate) and a polyester of a linear aliphatic dicarboxylic acid and a branched chain dihydric aliphatic glycol or a poly(butylene oxide).

Block carbonate-carboxylate copolyesters and method for their preparation

A plastic article having adhered thereto a translucent and decorative UV cured coating on the surface thereof which coating is wrinkled in a macroscopically irregular but microscopically regular manner and comprised of the photoreaction products of (i) certain polyfunctional acrylate monomers (ii) certain polysiloxane-polyether block copolymer surfactants and (iii) azobisisobutyronitrile.

Photocurable polyfunctional acrylic coating and decorative articles

Novel nucleating agents have been discovered which are effective in polyesters, especially poly(ethylene terephthalate). The novel nucleating agents are copolymers derived from a poly(alkylene terephthalate) and a sulfonate salt. Also provided by this invention are a process for nucleating polyesters, particularly poly(alkylene terephthalates), especially poly(ethylene terephthalate) and the compositions so produced.

Copolymeric nucleating agent for polyester

Modified thermoplastic polyester compositions are provided which comprise (a) a poly(1,4-butylene terephthalate) resin or polyester copolymer and, optionally, a poly(ethylene terephthalate) resin and (b) a modifier therefor comprising a combination of a polyacrylate resin or a vinyl aromatic-diene block copolymer resin and a poly(1,3-butylene terephthalate), and, optionally (c) filler and/or reinforcing agent and/or (d) a flame retardant or combination of flame retardants. Modifier (b) provides enhanced resistance to impact fracture in articles molded from the compositions.

Modified polyester compositions

Thermoplastic molding compositions are described, comprising a high molecular weight linear polyester or polyesters, optionally in admixture with block copolyesters, an impact modifier and a filler. These compositions are moldable into articles having improved properties.

Thermoplastic molding composition having improved warp resistance and

A thermoplastic molding composition having improved physical properties is provided, the composition comprising an intimate admixture of a high molecular weight polyester, from about 0.1 to about 25% by weight, based on the total composition, of a copolymer of ethylene and vinyl acetate and a filler, said composition having been prepared by melt blending the polyester, the copolymer and the filler and further reacting the resultant blend in the solid state.

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Evansville, IN, United States of America

Richard W Campbell