E.i. Dupont De Nemours and Company

Dupont Displays Inc

Other

Mark F Teasley

Che-Hsiung Hsu

Christopher P Junk

Charles J Dubois

Viacheslav Alexandrovich Petrov

Andrew Edward Feiring

Steven Dale Ittel

Frank Peter Uckert

Stephan James McLain

Zhen-Yu Yang

Elizabeth Forrester McCord

Alison Margaret Anne Bennett

Barry Alan Morris

Amy Qi Han, Legal Representative

Beth E Dunlap

Karl Jeffrey Sweetman

Edward J Stancik

Natalie Daoud

Giampiero Morini

Samuel David Arthur

Lech Wilczek

Mark Gerrit Roelofs

Ofelia Fusco

Dewey Lynn Kerbow

Andrew J Sitter

Sunghan Kim

Gurdial Singh

Rameshchandra M Gohil

Yuefei Tao

Fulton F Rogers, Jr

Andrew Edward Feiging

Viascheslav A Petrov

Zheng-Yu Yang

Tiziano Dall 'Occo

A fiber comprising poly(p-phenylene terephthalamide) having monomers such as N-(4-vinylphenyl)maleimide grafted onto the fiber surface.

Grafted para-aramid fiber and method of making

A method of making a fiber comprised of poly(p-phenylene terephthalamide) having monomer groups grafted onto the fiber surface, the method comprising the steps of (i) providing a fiber of poly(p-phenylene terephthalamide) that has been dried to remove adsorbed moisture, (ii) treating the fiber, in a non-polar solvent that will not dissolve the fiber, with a phosphazene base that exhibits a pKa in dimethylsulfoxide of at least 21 so as to generate anions at the amide sites on the surface of the poly(p-phenylene terephthalamide) fiber, (iii) washing the base-activated fiber with an aprotic solvent, (iv) grafting a monomer onto the anion sites so as to introduce reactive functional groups onto the surface of the poly(p-phenylene terephthalamide) fiber, and (v) washing the grafted fiber of step (iv) with a protic solvent to extract any residual base compounds and grafting agents that are unbound to the surface of the fibers.

Blends comprising 65-95 wt % poly(trimethylene terephthalate-co-sebacate), 5 to 35 wt % polylactic acid and a chain extender are provided that exhibit greatly increased melt strength compared to that of poly(trimethylene terephthalate-co-sebacate) alone. Such improvements allow these compositions to be processed readily by melt-blowing, which is useful for packaging and for preparing items such as biodegradable garbage bags.

Copolyester blends with improved melt strength

Described herein is a process to prepare crosslinkable polymers based on trifluorostyrene, and their use as polymer electrolyte membranes.

Process to prepare crosslinkable trifluorostyrene polymers and membranes

Provided are sulfone-containing polyarylene polymers, and processes for preparing the polymers. The polyarylene polymers are suitable for use as engineering polymers.

Polyarylene polymers and processes for preparing

There are provided electrically conducting polymer compositions comprising an electrectically conductive polymer or copolymer and an organic solvent wettable fluorinated acid polymer. Electrically conductive polymer materials are derived from thiophene, pyrrole, aniline and polycyclic heteroaromatic precursor monomers. Non-conductive polymers derived from alkenyl, alkynyl, arylene, and heteroarylene precursor monomers. The organic-solvent wettable fluorinated acid polymer is fluorinated or highly fluorinated and may be colloid-forming. Acidic groups include carboxylic acid groups, sulfonic acid groups, sulfonimide groups, phosphoric acid groups, phosphonic acid groups, and combinations thereof. The compositions can be used in organic electronic devices.

Electrically conductive polymer compositions

Disclosed is a composition comprising an aliphatic-aromatic copolyester consisting essentially of a dicarboxylic acid component that includes a terephthalic acid component and a linear aliphatic dicarboxylic acid component; and a glycol component consisting essentially of a linear aliphatic glycol component and 0 to 4 mole percent based on 100 mole percent total glycol component of a dialkylene glycol component; starch; optionally water; and polyol plasticizer. Also disclosed are shaped articles such as films which exhibit greater than expected tear strength and methods for preparing the films.

Biodegradable starch-containing composition with improved tear strength

Disclosed is a composition comprising an aliphatic-aromatic copolyester consisting essentially of a dicarboxylic acid component that includes a terephthalic acid component and a linear aliphatic dicarboxylic acid component, a glycol component consisting essentially of a linear aliphatic glycol component and 0 to 4 mole percent based on 100 mole percent total glycol component of a dialkylene glycol component and at least one additional component; starch; water; and polyol plasticizer. Also described are shaped articles such as films which exhibit greater than expected tear strength and methods for preparing the films.

Biodegradable starch-containing blend

The preparation of aromatic sulfonimide polymers useful as membranes in electrochemical cells is described.

Arylene-fluorinated-sulfonimide ionomers and membranes for fuel cells

Aromatic sulfonimide ionene polymers useful as membranes in electrochemical cells are prepared.

Process for the preparation of arylene fluorinated sulfonimide polymers and membranes

Arylene fluorinated sulfonimide polymers and membranes

Described herein are aromatic sulfonimide compositions that can be used to prepare polymers useful as membranes in electrochemical cells.

Arylene fluorinated sulfonimide compositions

Aromatic sulfonimide ionene compositions useful as monomers for polymers in electrochemical cells are prepared.

Bridged arylene fluorinated sulfonimide compositions and polymers

There are provided electrically conducting polymer compositions comprising an electrically conductive polymer or copolymer and an organic solvent wettable fluorinated acid polymer. Electrically conductive polymer materials are derived from thiophene, pyrrole, aniline and polycyclic heteroaromatic precursor monomers. Non-conductive polymers derived from alkenyl, alkynyl, arylene, and heteroarylene precursor monomers. The organic-solvent wettable fluorinated acid polymer is fluorinated or highly fluorinated and may be colloid-forming. Acidic groups include carboxylic acid groups, sulfonic acid groups, sulfonimide groups, phosphoric acid groups, phosphonic acid groups, and combinations thereof. The compositions can be used in organic electronic devices.

The present disclosure relates to electrically conductive polymer compositions, comprising at least one electrically conductive copolymer; and at least one fluorinated acid polymer, their use in organic electronic devices, and methods for preparation.

Growing community of inventors

Landenberg, PA, United States of America

Mark F Teasley