E.i. Dupont De Nemours and Company

Other

The University of North Carolina at Chapel Hill

Oxford Medical Limited

Jeffrey David Cohen

David Neil Marks

Raymond F Tietz

Joseph M DeSimone

Che-Hsiung Hsu

Sharon Loretta Haynie

Donald W Edwards

Ian Leitch McDougall

Albert W Alsop

Jan M Stouffer

Elwood Neal Blanchard

Henry Kobsa

John M Iwasyk

Ernest Keith Marchildon

Stuart Fergusson

Michael H Scholla

Arthur N Roe

Ahmet Turgut Mutel

Alan G Armstrong

Dennis J Kountz

Clara Young Lin

Carl W Erkenbrecher, Jr

Michael J Kelley

Ramone Givens

Mitsutoshi Jikei

An improved process, such as a microbiological or enzymatic process, and apparatus, such as an apparatus for producing a cellular product, comprising introducing a gaseous feed stream of at least one gas of low solubility into an aqueous medium containing a microorganism capable of converting said gaseous feed stream to a cellular product, entraining the gas in the aqueous medium, stirring the gas-entrained aqueous medium so that the gas is retained within the reactor for a time sufficient for the microorganism to convert the majority of the gas to product.

Process and apparatus for performing a gas-sparged reaction

Process for making nylon 6 in which a feed stream containing a major portion of caprolactam and/or nylon 6 prepolymer and a minor portion of aminocapronitrile is fed to a multistage reactive distillation column in which the feed stream flows countercurrently to a steam stream.

Process for the production of nylon 6

A water flow monitoring system for determining the presence of leaks in plumbing pipes having water flowing through the pipes under high pressure includes a flow monitor which is mounted to the pipe for sensing the flow of water through the pipe. A controller composed of a timer and/or accumulated volume meter associated with the flow monitor, to determine when the flow has continued for a preselected period of time, and/or when the amount of water has exceeded a preselected accumulated volume threshold, and logic components responsive to changes in flow rate. Upon detection of flow for the preselected period of time, and/or preselected accumulated volume threshold, a valve is actuated to stop flow through the pipe.

Water flow monitoring system determining the presence of leaks and stopping flow in water pipes

A process of forming a polycarbonate comprises providing a reaction mixture of at least one polycarbonate-forming monomer and carbon dioxide; and then reacting the polycarbonate-forming monomer and carbon dioxide in the reaction mixture to form the polycarbonate. In one embodiment, the polycarbonate is present in a condensate, and the process further comprises removing carbon dioxide from the reaction mixture; and then collecting the condensate from the reaction mixture. Moreover, uncrystallized polycarbonate may be treated with carbon dioxide to form crystalline polycarbonate. The crystalline polycarbonate is then rendered useful for solid state polymerization.

Synthesis of polycarbonates using Co2

A process for the preparation of poly(urethaneurea) fibers by reacting a blocked aliphatic diamine with a capped glycol prepolymer, followed by extrusion spinning, is provided.

Preparation of poly (urethaneurea) fibers

Disclosed is a process for the preparation of polyamide polymers via prepolymer formation in a reactor system comprising a reactor, flasher and separator, crystallization of the prepolymer under controlled temperature conditions and the subsequent conversion of these crystallized prepolymers to high molecular weight polymer.

Process for preparing polyamides

Process for preparing antimicrobial polymeric materials using irradiation

A water flow monitoring system for determining the presence of leaks in plumbing pipes having water flowing through the pipes under high pressure includes a flow monitor which is mounted to the pipe for sensing the flow of water through the pipe. A timer and/or accumulated volume meter is associated with the flow monitor to determine when the flow has continued for a preselected period of time, and/or when the amount of water has exceeded a preselected accumulated volume threshold. Upon detection of flow for the preselected period of time, and/or preselected accumulated volume threshold, a valve is actuated to stop flow through the pipe.

Water flow monitoring system for determining the presence of leaks and

Magnetic field generating assembly and method

Polyaniline fibers are spun from stable solutions of the polymer in certain amine solvents.

Stable solutions of polyaniline and shaped articles therefrom

Growing community of inventors

Kennett Square, PA, United States of America

Jeffrey David Cohen