Alliedsignal Inc.

Allied Corporation

Allied Chemical Corporation

Ausimont Usa, Inc.

Joseph E Mackey

Mingliang Lawrence Tsai

Yash P Khanna

Albert H Steinberg

Michael P Dellavecchia

Frank Mares

Kundan M Patel

Richard S Hatami

Charles Willard Paul

Alfieri Degrassi

John A Gregor

Gina R Kritchevsky

George S Wilson

Margaret M Randle

Harvey E Kline

Russell Lee Schneider

Yash Paul Khanna

William F Wiederspahn

The present invention provides highly oriented multilayer films. They are produced by coextruding or laminating films having at least one layer of a fluoropolymer, at least one layer of a polyolefin homopolymer or copolymer and an intermediate adhesive layer of a polyolefin having at least one functional moiety of an unsaturated carboxylic acid or anhydride thereof. With this structure the polyolefin layer allows the fluoropolymer layer to be stretched up to ten times its original length. Such a high orientation ratio for the fluoropolymer film increases the mechanical strength, toughness, and water vapor barrier properties of the film while using a thinner gauge fluoropolymer film. Coextrusion processing can be done at higher temperatures, i.e. in the range of from at about 280&deg; C. to about 400&deg; C. These temperatures allow films to be produced in the absence of polymer degradation and film melt fracture.

Highly oriented fluoropolymer films

A method of producing highly oriented multilayer films comprising laminating films having at least one layer of a fluoropolymer, at least one layer of a polyolefin homopolymer or copolymer and an intermediate adhesive layer of a polyolefin having at least one functional moiety of an unsaturated carboxylic acid or anhydride thereof. With this structure the polyolefin layer allows the fluoropolymer layer to be stretched up to ten times its original length. Such a high orientation ratio for the fluoropolymer film increases the mechanical strength, toughness, and water vapor barrier properties of the film while using a thinner gauge fluoropolymer film.

The present invention provides biaxially oriented multilayer fluoropolymer films. They are produced by coextruding or laminating films having at least one layer of a fluoropolymer, at least one layer of a thermoplastic homopolymer or copolymer and an intermediate adhesive layer which is preferably a polyolefin having at least one functional moiety of an unsaturated carboxylic acid or anhydride thereof. With this structure the thermoplastic layer allows the fluoropolymer layer to be biaxially stretched many times its original length. A high orientation ratio for the fluoropolymer film increases the mechanical strength, toughness, and water vapor barrier properties of the film while using a thinner gauge fluoropolymer film. Coextrusion processing can be done at higher temperatures, i.e. in the range of from at about 280.degree. C. to about 400.degree. C. These temperatures allow films to be produced in the absence of polymer degradation and film melt fracture.

Biaxial orientation of fluoropolymer films

A method of producing highly oriented multilayer films comprising coextruding films having at least one layer of a fluoropolymer, at least one layer of a polyolefin homopolymer or copolymer and an intermediate adhesive layer of a polyolefin having at least one functional moiety of an unsaturated carboxylic acid or anhydride thereof. With this structure the polyolefin layer allows the fluoropolymer layer to be stretched up to ten times its original length. Such a high orientation ratio for the fluoropolymer film increases the mechanical strength, toughness, and water vapor barrier properties of the film while using a thinner gauge fluoropolymer film. Coextrusion processing is done at higher temperatures, i.e. in the range of from at about 280.degree. C. to about 400.degree. C. These temperatures allow films to be produced in the absence of polymer degradation and film melt fracture.

This invention relates to a process for forming metal or non-metal carbide fiber from the corresponding metal or non-metal.

Process for preparation of metal carbide fibers

A process for forming a metal or non-metal carbide fiber comprising the steps of stabilizing a fiber comprising a carbon forming polymer and a metal or non-metal oxide or a mixture of more than 50% by weight of said oxide and a metal or non-metal to form a stabilized fiber; carbonizing the stabilized fiber to form a fiber comprising carbon and a metal or non-metal oxide or a mixture of said oxide and a metal or non-metal; reacting the carbon and metal or non-metal oxide or mixture of said oxide and metal or non-metal to form a fiber comprising a metal or non-metal carbide; and sintering the fiber comprising said metal or non-metal carbide to form a fiber having a density of greater than about 70% of the theoretical density of said metal or non-metal carbide.

This invention is directed to a process of forming composites comprising reinforcing fibers dispersed in a thermoplastic polymer matrix, said process comprising the steps of coating a reinforcing fiber with a curable resin and an initiator for the curing of the resin and for the polymerization of monomer of said polymer; curing said resin to form cured resin coated fiber; coating said resin coated fiber with monomer of said polymer; polymerizing the monomer coating to form a polymer/resin coated fiber; and aligning the polymer/resin coated fiber and molding same into a desired reinforced thermoplastic composite.

Composites via in-situ polymerization of composite matrices using a

The surface of a molten polymer is treated with a flame as the polymer is extruded; the polymer is co-calendered with a substrate as a fibrous web immediately downstream from the extruder and the flame. Articles so treated exhibit superior bond strengths. In one embodiment, both the polymer and the web are treated with a flame prior to the step of co-calendering.

Method of bonding glass fibers or other substrates to various polymers

Reinforced thermoplastic polymer composite sheets, formable into smooth, shaped objects in a stamping process. The composite sheet is produced by laminating together (1) a first layer of thermoplastic resin containing short glass fibers and a mineral filler such as kaolin, (2) a backing reinforcing layer comprising a long glass mat impregnated by thermoplastic resin and (3) optionally a third layer similar to said first layer. The long glass mat is positioned within the reinforcing layer during impregnation, whereby the mat becomes encased in a resin matrix.

Fiber reinforced multi-ply stampable thermoplastic sheet

An improved polymer sheet. The improvement is at least one surface polymer film layer and at least one fabric veil. A veil is laminated between each surface polymer film layer and the polymer sheet. There is a method of heating a polymer sheet containing the improvement of the present invention.

Thermoplastic laminate having masked surface fabric veil layer

Reinforced thermoplastic polymer composite sheets, formable into smooth, shaped objects in a stamping process. The composite sheet is produced by laminating together (1) a first layer of thermoplastic resin containing short nonsiliceous fibers and a mineral filler such as kaolin, (2) a backing reinforcing layer comprising a long nonsiliceous fiber mat impregnated by thermoplastic resin and (3) optionally a third layer similar to said first layer. The long fiber mat is positioned within the reinforcing layer during impregnation, whereby the mat becomes encased in a resin matrix.

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East Hanover, NJ, United States of America

Joseph E Mackey