Union Carbide Chemicals & Plastics Technology Corporation

Other

Union Carbide Corporation

Robert Lorenz Boysen

Leonard Sebastian Scarola

Gary Harry Williams

Duan-Fan Wang

Robert Cecil Brown

Mark Gregory Goode

Thomas Edward Spriggs

Robert Darrell Olson

John Henry Moorhouse

Robert J Bernier

Kevin Joseph Cann

Maria A Apecetche

Natarajan Muruganandam

Gregory George Smith

Robert Joseph Noel Bernier

Timothy R Lynn

Cliff Robert Mure

Aaron S Rhee

Arnis U Paeglis

Jeffrey D Collins

A process for producing polymer in a gas phase reactor by introducing a stream of monomer and gas into a polymerization zone while providing at least one liquid component in the polymerization zone.

Gas phase polymerization process

The present invention provides a process and apparatus for feeding powders such as fine, cohesive, or powdery particulate materials from a low pressure system to a high pressure system. In a preferred embodiment a process and apparatus of pressurizing and feeding carbon black fluff to a polymerization reactor is provided particularly a gas phase fluidized polymerization reactor to provide for a close-coupling of a carbon black reactor to a polymerization reactor.

Process for feeding particulate material to a fluidized bed reactor

The present invention provides a process and apparatus for feeding powders such as fine, cohesive, or powdery particulate materials from a low pressure system to a high pressure system. There is provided in a preferred embodiment a process and apparatus of pressurizing and feeding carbon black fluff to a polymerization reactor, particularly a gas phase fluidized polymerization reactor to provide for a close-coupling of a carbon black reactor to a polymerization reactor.

A thermoplastic elastomer consisting essentially of a copolymer comprising a mixture of ethylene; one or more alpha-olefins having 3 to 12 carbon atoms; and, optionally, a diene, said copolymer being in an uncrosslinked state and having a crystallinity in the range of about 2 to about 40 percent by weight based on the weight of the copolymer wherein about 15 to about 85 percent by weight of the crystallinity melts at a temperature above 80.degree. C.; about 15 to about 85 percent by weight of the crystallinity melts at a temperature below 80.degree. C.; and the crystalline melting temperatures differ by at least about 30.degree. C.

Membrane and mixture comprising a thermoplastic elastomer

A process for producing polymers in a gas phase reactor by continuously introducing a stream of monomer and gas into a polymerization zone while maintaining the temperature within the polymerization zone below the dew point temperature of at least one monomer present in said polymerization zone.

A core-shell resin particle composed of a mixture of rubber and inert material with a core containing a majority of rubber while the shell contains a majority of inert material.

Core-shell resin particle

A coaxial cable having improved mechanical and electrical properties comprising an inner conductor; an outer inert gas blown cellular ethylene or propylene polymer dielectric layer having in unexpanded form a density of about 0.86 to 0.96 grams per cubic centimeter, a melt index of about 0.05 to 10 decigrams per minute and an expanded density up to 0.6 grams per cubic centimeter, said core member having a dissipation factor value of .ltoreq. 250 microradians at an electrical transmission frequency range of from 50 to 300 mega Hertz; and an outer coaxial conductor.

Coaxial cable with improved properties

Growing community of inventors

Lebanon, NJ, United States of America

Robert Lorenz Boysen