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:
Jan. 22, 1980
Filed:
Jul. 17, 1978
William Kirch, Clinton, IA (US);
Paul A Thompson, Clinton, IA (US);
Chemplex Company, Rolling Meadows, IL (US);
Abstract
A catalyst for polymerizing one or more 1-olefins and prepared by the process of (1) forming an initial mixture of a finely divided support such as silica and a chromium.sup.+3 compound of either of the formulas ##STR1## or Cr(OOCR).sub.3 or a mixture in an amount to provide about 0.1-30 weight percent of chromium in the finished catalyst and in which each R is individually selected from hydrogen or a hydrocarbyl group of 1-20 carbon atoms and the necessary hydrogen atoms, followed by (2) heating the mixture of (1) in a stream of dry, inert, and non-oxidizing gas and heating to a temperature of about 230.degree.-540.degree. C., and then (3) forming a second combination by adding a titanium compound to the product of (2) at a temperature ranging from 95.degree.-370.degree. C., and then (4) activating the mixture of (3) by heating in a dry, oxidizing atmosphere such as dry air to a temperature of about 370.degree.-1100.degree. C. The disclosure also includes a method of preparing such a catalyst and the method of polymerizing at least one 1-olefin with said catalyst.