Amoco Corporation

Lee P McMaster

Paul A Winslow

Markus Matzner

James E Harris

George T Kwiatkowski

Robert A Clendinning

Lloyd Mahlon Robeson

Louis M Maresca

James H Kawakami

Marvin E Sauers

Tyler F Hartsing, Jr

Bernard Cooker

Injection-moldable copolyesters of terephthalate units, ethylene units and a high proportion (e.g. 82-87) mole %) of oxybenzoate units, and cookware made of such copolyesters. Process for making such copolyesters by reacting polyethylene terephthalate with p-acetoxybenzoic acid in a solvent, first at a temperature below 240.degree. C. to product a fragmented polyester, raising the temperature to split off acetic acid, then adding more acetoxybenzoic acid to raise the oxybenzoate content to more than 80 mole %.

Copolyesters

Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).

Bis(acid chloride) terminated polyaryl ether ketone oligomer

A continuous plastic laminate having improved stiffness at use temperature, comprising at least three melt coextruded sheets, each comprising a thermoplastic polymer or polymer blend, the outside sheets having a higher stiffness at use temperature than at least one inside sheet.

Laminates containing coextruded scrap

Poly (aryl ether ketone) block copolymers

Poly(aryl ether ketone) block copolymers

Described herein are novel poly(aryl ether ketones) which display unique and outstanding high temperature properties, a unique blending behavior and excellent fabricability characteristics.

Novel poly(aryl ether ketones)

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Brookfield, CT, United States of America

Lee P McMaster