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Maurice S Brookhart, Lynda Kaye Johnson, Christopher Moore Killian, Elizabeth Forrester McCord, Stephan James McLain, Kristina Ann Kreutzer, Steven Dale Ittel, Daniel Joseph Tempel: Olefin polymers. E I du Pont de Nemours and Company, Craig A Evans, Joel D Citron, March 9, 1999: US05880241 (95 worldwide citation)

Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Sinc ...


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James C Stevens, Daniel D Vanderlende, Samuel Ethiopia: Isotactic propylene copolymer fibers, their preparation and use. Dow Global Technologies, Whyte Hirschboeck Dudek SC, March 18, 2008: US07344775 (53 worldwide citation)

Fibers comprising a propylene homopolymer or a copolymer of propylene and at least one of ethylene and one or more unsaturated comonomers exhibit desirable properties. The homopolymers are characterized as having 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peak ...


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Stephen P Krupp, John O Bieser, Edward N Knickerbocker: Linear ethylene polymer staple fibers. The Dow Chemical Company, May 12, 1992: US05112686 (41 worldwide citation)

Blends of high molecular weight linear polyethylene and low molecular weight linear polyethylene provide improved staple fiber-forming capabilities over that found with either polymer taken alone. Preferably at least one of the polymers used in the blend is a linear low density polyethylene, LLDPE, ...


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Zdravko Jezic, Gene P Young: Biconstituent polypropylene/polyethylene fibers. The Dow Chemical Company, July 28, 1992: US05133917 (39 worldwide citation)

Extrudable blends of polypropylene and polyethylene, especially LLDPE, are prepared in a dynamic mixer and extruded as novel biconstituent fibers comprising polypropylene as one phase and polyethylene as another phase. Improved tenacity and hand are obtained, as compared to polypropylene alone.


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Hyunkook Shin: Plexifilament and nonwoven made of alternating ethylene/carbon monoxide copolymer. E I du Pont de Nemours and Company, July 20, 1999: US05925442 (4 worldwide citation)

Olefin/carbon monoxide alternating polymers are flash-spun to form plexifilamentary products, pulp products, and foam products from alcohol or halogenated hydrocarbon solvents having 1 to 3 carbon atoms.


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Hendrik T Maat, Peter J Cloos, Harm Van Der Werff, Bert J Lommerts: Polyketone yarn and a method of manufacturing same. Akzo Nobel, Joseph M Noto, Loretta A Miraglia, Louis A Morris, September 3, 1996: US05552218 (3 worldwide citation)

The invention relates to polyketone yarns of which the maximum tangential modulus at an elongation of more than 0.2% is at least 10 N/tex which display both high strength and, if so desired, a high elongation at break. The quality number, which is measured on a single filament out of a bundle of at ...


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Alessandra Sutti, Tong Lin, Mark Alexander Kirkland: Fibre-forming process and fibres produced by the process. Heiq, McDonnell Boehnen Hulbert & Berghoff, March 20, 2018: US09920454 (1 worldwide citation)

The present invention relates to a process for the preparation of fibers and fibers prepared by the process. The process can provide discontinuous colloidal polymer fibers in a process that employs a low viscosity dispersion medium.