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:
Jul. 15, 1997
Filed:
Apr. 01, 1994
David T Henry, Baton Rouge, LA (US);
Doulgas J McLain, Walker, LA (US);
Joseph D Domine, Humble, TX (US);
Aspy Keki Mehta, Humble, TX (US);
William Joseph Zafian, Pasadena, TX (US);
Norbert Baron, Cologne, DE;
Bernard J Folie, Rhode-St. Genese, BE;
Exxon Chemical Patents, Inc., Wilmington, DE (US);
Abstract
The invention provides a continuous process for catalytically polymerizing a monomer feed of ethylene and at least one comonomer which comprises introducing a catalyst including a bulky ancillary ligand transition metal compound and monomer feed in an upstream reaction zone for polymerization, introducing further catalyst in a downstream reaction zone for further polymerization, the peak temperature in the downstream reaction zone being at least 50.degree. C. higher than in the upstream zone and being above 150.degree. C. The process economically produces polymer of good properties which is melt processable.