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Gordon W Calundann, Herbert L Davis, Frederick J Gorman, Robert M Mininni: Melt processable thermotropic wholly aromatic polyester. Celanese Corporation, April 11, 1978: US04083829 (159 worldwide citation)

A wholly aromatic polyester is provided which has been found to be highly amenable to melt extrusion to yield high performance fibers. Such fibers following thermal treatment exhibit high tenacity and tensile modulus properties which are well retained at elevated temperatures while exhibiting a low ...


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Herbert L Davis, Michael L Jaffe, Herman L LaNieve III, Edward J Powers: Polyester yarn of high strength possessing an unusually stable internal structure. Celanese Corporation, July 18, 1978: US04101525 (51 worldwide citation)

An improved high performance polyester (at least 85 mol percent polyethylene terephthalate) multifilament yarn possessing a novel internal structure is provided. The multifilament yarn of the present invention possesses a high strength (at least 7.5 grams per denier) and an unusually stable internal ...


3
Herbert L Davis, Michael L Jaffee, Michael M Besso: Process for the expeditious formation and structural modification of polyester fibers. Celanese Corporation, Thomas J Morgan, Charles B Barris, March 23, 1976: US03946100 (37 worldwide citation)

An improved process is provided for the production of polymeric filamentary material or film. Molten melt-spinnable polymeric material capable of undergoing crystallization (e.g., a polyester) is extruded through a shaped orifice to form a filamentary material or film under high stress conditions, q ...


4
Herbert L Davis, Michael L Jaffe, Herman L LaNieve III, Edward J Powers: Production of improved polyester filaments of high strength possessing an unusually stable internal structure. Celanese Corporation, Kenneth A Genoni, March 25, 1980: US04195052 (34 worldwide citation)

An improved process is provided for the formation of a high performance polyester (at least 85 mol percent polyethylene terephthalate) multifilament yarn. The product possesses a high strength (at least 7.5 grams per denier) and an unusually stable internal structure which renders it particularly su ...


5
Herbert L Davis, Michael L Jaffe, Michael M Besso: Polyester fiber. Celanese Corporation, Kenneth A Genoni, March 25, 1980: US04195161 (18 worldwide citation)

An improved polyester filament (i.e., a principally polyethylene terephthalate filament) suitable for use in commercial applications is provided having a unique internal structure. The filament possesses an interconnected highly oriented crystalline microstructure coextensive with its length coexist ...


6
John C Chen, Herbert L Davis: Process for enhancing the uniformity of dye uptake of false twist texturized polyethylene terephthalate fibrous materials. Celanese Corporation, Thomas J Morgan, October 20, 1981: US04296058 (8 worldwide citation)

The present invention provides an improvement in a process for providing a dyed, false twist texturized, fibrous material comprising at least 85 mole percent polyethylene terephthalate which is subject to variations in dye uptake induced by the false twist texturizing treatment conducted on said fib ...


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