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:
Nov. 16, 1982
Filed:
Jul. 17, 1981
BASF Aktiengesellschaft, , DE;
Abstract
A process for the preparation of ethylene homopolymers, and ethylene copolymers with minor amounts of higher .alpha.-monoolefins, by polymerizing the monomer or monomers by means of a supported catalyst (1) containing a chromium-hydrocarbon complex (1.2) on an inorganic oxide carrier (1.1), wherein (1) a supported catalyst is employed which contains (1.2) a chromium-hydrocarbon complex of the formula RCrACrR, where R is a cyclic and/or open-chain hydrocarbon, or hydrocarbon radical, of 2n and 2n+1 carbon atoms respectively and having from 1 to n non-cumulated double bonds, n being from 2 to 10, Cr is chromium and A is cyclooctatetraene, a divalent n-octatetraene radical or alkyl-substituted homologs thereof, on (1.1) a particular inorganic oxide carrier, with or without (2) a co-catalyst chosen from a particular group of alkyl-aluminum compounds. The process gives polymers having a particularly broad molecular weight distribution.