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. 28, 2000
Filed:
Dec. 02, 1998
M Bruce Welch, Bartlesville, OK (US);
Helmut G Alt, Bayreuth, DE;
Bernd Peifer, Marl, DE;
Syriac J Palackal, Bartlesville, OK (US);
Gary L Glass, Dewey, OK (US);
Ted M Pettijohn, Longview, TX (US);
Gil R Hawley, Dewey, OK (US);
Darryl R Fahey, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
The present invention provides polymers of ethylene having ethyl branches, a narrow molecular weight distribution, no substantial amount of branches longer than any comonomer employed in the polymerization, and an unusually low branching to density ratio. In one embodiment the polyethylenes are substantially free of any branches having more than 2 carbon atoms, i.e. ethyl branches, and the molar percent of ethyl branches is substantially the same for molecular fractions across the molecular weight distribution. In another embodiment the polyethylenes have other branches having 3 or more carbons and the molar percent of the ethyl branches is substantially the same for molecular fractions across the molecular weight distribution.