The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1998
Filed:
Sep. 13, 1996
George Ernest Keller, South Charleston, WV (US);
Keith Ernest Carmichael, Charleston, WV (US);
Jean Bowman Cropley, Scott Depot, WV (US);
Eldon Ronald Larsen, Charleston, WV (US);
Arakalud Venkatapathia Ramamurthy, East Windsor, NJ (US);
Mark Wilton Smale, Glen Gardner, NJ (US);
Timothy Todd Wenzel, Charleston, WV (US);
Clark Curtis Williams, Charleston, WV (US);
Union Carbide Chemicals & Plastics Technology Corporation, Danbury, CT (US);
Abstract
A process for the gas-phase polymerization of polymers which allows for the introduction of an unsupported polymerization catalyst system into the gas-phase reactor, wherein the unsupported polymerization catalyst system comprises (i) a non-volatile materials fraction containing a polymerization catalyst; (ii) a solvent fraction which is at least partially miscible with the non-volatile materials fraction and which is sufficiently volatile to allow for the formation of polymerization catalyst particles when the mixture of the solvent fraction and the non-volatile materials fraction is sprayed into the reactor; (iii) a compressed fluid; and (iv) optionally a slowly vaporizing solvent.