The Dow Chemical Company

Dowelanco

Filmtec Corporation

The Cynara Co.

Ritchie A. Wessling

Dale M. Pickelman

Dennis G. Wujek

Ritchie A Wessling

Dale M Pickelman

Donald L Schmidt

Dale S Gibbs

Richard F Fibiger

Chieh-Chun Chau

Earl H Wagener

Stephen E Bales

Larry D Yats

Thomas C Klingler

Alan F Burmester

David J Forgach

Henry N Beck

Thomas O Jeanes

Sharon S Whipple

Jee I Kau

Peter K Kim

George J Quarderer, Jr

Thomas Caldwell Young

David J Moll

Peter E Pierini

Kent B McReynolds

Michael J Colucci

Bethanne L Smith

Charles Z Hotz

William A Foster

Thomas E Davis

Kiyoshi I Aikawa

James E Clark

Ronald M Lacher

Dennis G Wujek

Ja-Young Koo

Patrick H Martin

Robert J Petersen

Kenneth J Cleereman

Norbert L Bradley

Craig J Bott

Thomas F Stocker

Daniel Bernardo Roitman

Zenon Lysenko

Mark F Sonnenschein

Selim Yalvac

Robert D Mahoney

Ying Hung So

Roberta C Cheng

Victor E Meyer

Steven J Martin

Matthew T Bishop

Jang-hi Im

Richard G Melcher

Hawk S Wan

Takaharu Ichiryu

Myrna Serrano

Katsuya Tani

Willie E Rochefort

Ashish Sen

Gary L Jewett

William O Perry

Masaru Nakagawa

John D Summers

Arie Cohen

Jiro Kawamoto

Donald E McLemore

Joel R Racchini

Robert D Vandell

Edward F Gurnee

Norman L Madison, Deceased

Katsuhiko Kato

Donald D Schmidt

Timothy M Finney

Darryl K Tolbert

Ken M Shaw

Gas separations utilizing glassy polymer membranes at sub-ambient

The present invention further provides a substantially non-aqueous agricultural pesticide concentrate formulation of a non-ionic surfactant and a amphipathic graft copolymer composition in admixture with a water-insoluble organic agricultural pesticide which concentrate formulation can be easily diluted with water to form non-settling, freeze-thaw stable formulations. The present invention further provides methods for the use of water-diluted agricultural pesticide concentrate formulations of the above non-ionic surfactant concentrate formulations in the kill and control of agricultural pest.

Amphipathic graft copolymer pesticide formulation compositions and

Described is a process for preparing a three-dimensional article of a lyotropic polymer comprising the steps of (a) forming a shaped article of a liquid crystalline solution of a lyotropic polymer; (b) washing the shaped article with a washing fluid under conditions sufficient to reduce the solvent content of the article to less than about 2,000 parts per million, wherein the dimensions of the washed article are no less than 0.05 inches by 0.05 inches by 0.05 inches. Such articles are useful for many applications, particularly those requiring fire- and/or heat-resistance.

Three-dimensional articles of lyotropic polymers and methods for the

The unsaturation of a hydroxyl-containing compound can be reduced by reaction with a nitrile oxide compound such as tetramethyl terephthalonitrile, N,N'-dioxide. The reaction of a nitrile oxide with terminal unsaturation associated with the preparation of a polyol from propylene oxide reduces the monol content of the polyol composition.

Polyols having reduced terminal unsaturation and a process for producing

This invention relates to a method of and apparatus for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures of 5.degree. C. or less so as to achieve superior separation of gas components.

The invention is a process for the preparation of polybenzazole staple fibers which includes extruding a solution of polybenzazole polymer to form a dope filament, cutting the dope filament to a desired length, and washing and drying the cut filament. It has been discovered that the process of the invention provides a suitable means to prepare staple fibers which does not require the cutting of washed, rigid polybenzazole filaments.

Process for the preparation of polybenzazole staple fiber

Described is a method for preparing a polybenzazole filament which comprises extruding a polybenzazole dope filament, drawing the filament across an air gap, coagulating and washing the filament, and drying the filament, characterized in that a solution of a compound selected from the group consisting of ferrocenes, ruthocene, iodide-, cobalt-, and copper-containing compounds, dyes, and mixtures thereof is contacted with a filament subsequent to the washing step and prior to the drying step. This method provides a means to improve the tensile strength retention of damaged polybenzazole filaments following exposure to sunlight.

Polybenzazole fibers having improved tensile strength retention

Stable emulsions of water-insoluble organic pesticides are formed by mixing the pesticide with an aqueous dispersion of a graft copolymer comprising a reactive polymeric surfactant base polymer and a nonionic hydrophobic grafted composition. The graft copolymer spontaneously absorbs organic pesticides with low water solubility upon simple mixing. The resulting product is much more stable to coalescence than emulsions made with conventional or polymeric surfactants. Emulsifiable organic based concentrates, having a continuous oil phase, which are formed from admixtures of pesticidally active water-insoluble organic pesticides with graft copolymers can be diluted with or in water, thus, inverting the continuous oil phase to stable water based oil-in-water emulsions of the active pesticide.

Stable concentrates and emulsions of water-insoluble organic pesticides

This invention relates to a low heat release, low density, fiber-reinforced composite comprising a matrix comprising a thermoplastic polymer selected from the group consisting of polyarylsulfone, polyethersulfone, polyetheretherketone, polyetherketoneketone, a copolycarbonate of 4,4'-thiodiphenol and at least one member of the group consisting of bisphenol A, 9,9-bis(4-hydroxyphenyl) fluorene, and 1,1-bis-(4-hydroxyphenyl)-1-phenyl ethane, a copolycarbonate of bisphenol A and 9,9-bis(4-hydroxyphenyl) fluorene, 1,1-bis(4-hydroxyphenyl)-1-phenyl ethane polycarbonate, bisphenol A polycarbonate, and polyetherimide, and from about 10 to about 70 percent by weight of the composite of randomly oriented reinforcing fibers, less than 0.5 inch in length, distributed throughout the matrix. The matrix has a void volume of from about 20 to about 90 percent by volume. The composite has a thermoplastic skin layer on each of the major surfaces thereof. A process for making the composite is also disclosed.

Low heat release polymeric composites

This invention relates to a low heat release, low density, fiber-reinforced composite comprising a matrix comprising a thermoplastic polymer selected from the group consisting of polyarylsulfone, polyethersulfone, polyetheretherketone, polyetherketoneketone, a copolycarbonate of 4,4'-thiodiphenol and at least one member of the group consisting of bisphenol A, 9,9-bis(4-hydroxyphenyl)fluorene, and 1,1-bis(4-hydroxyphenyl)-1-phenyl ethane, a copolycarbonate of bisphenol A and 9,9-bis(4-hydroxyphenyl)fluorene, 1,1-bis(4-hydroxyphenyl)-1-phenyl ethane polycarbonate, bisphenol A polycarbonate, and polyetherimide, and from about 10 to about 70 percent by weight of the composite of randomly oriented reinforcing fibers, less than 0.5 inch in length, distributed throughout the matrix. The matrix has a void volume of from about 20 to about 90 percent by volume. The composite has a thermoplastic skin layer on each of the major surfaces thereof. A process for making the composite is also disclosed.

A structural panel for a vehicle or building contains a substrate and a layer of flame resistant polybenzazole polymer. If the substrate is heat resistant, the panel can serve as a fire barrier. If the substrate is not heat resistant, the polybenzazole layer can still serve to delay ignition and contain any volatile gases and molten polymer that forms when the panel is subjected to heat.

Fire resistant panel

The present invention relates to a process for preparing a microporous permselective membrane from a poly(phenylene sulfide) (PPS) polymer, an organic compound which substantially solubilizes the PPS below its melting point to form a homogenous mixture, heating the resulting mixture, extruding or casting the mixture into a membrane (fiber or film), quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, after leaching, or a combination thereof. In one embodiment, the solvent optionally includes an organic non-solvent to assist in obtaining the desired microporsity. The permselective polymers are useful to separate gaseous or liquid components from a mixture of components.

Process of making microporous hollow fiber or film membrane of

The invention relates to novel xylylene based polyether gas separation membranes and a method of separating gases using such membranes.

Xylylene based polyether membranes for gas separation

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Midland, MI, United States of America

Ritchie A Wessling