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. 09, 2010
Filed:
Sep. 15, 2005
Paul J. Deslauriers, Bartlesville, OK (US);
Max P. Mcdaniel, Bartlesville, OK (US);
AL R. Wolfe, Bartlesville, OK (US);
Pamela L. Maeger, Bartlesville, OK (US);
William R. Coutant, Stillwater, OK (US);
David C. Rohlfing, Bartlesville, OK (US);
Steven J. Secora, Bartlesville, OK (US);
William B. Beaulieu, Tulsa, OK (US);
Elizabeth A. Benham, Spring, TX (US);
David F. Register, Bartlesville, OK (US);
Paul J. DesLauriers, Bartlesville, OK (US);
Max P. McDaniel, Bartlesville, OK (US);
Al R. Wolfe, Bartlesville, OK (US);
Pamela L. Maeger, Bartlesville, OK (US);
William R. Coutant, Stillwater, OK (US);
David C. Rohlfing, Bartlesville, OK (US);
Steven J. Secora, Bartlesville, OK (US);
William B. Beaulieu, Tulsa, OK (US);
Elizabeth A. Benham, Spring, TX (US);
David F. Register, Bartlesville, OK (US);
Chevron Phillips Chemical Company LP, The Woodlands, TX (US);
Abstract
The present invention is directed to PE-100 ethylene copolymers and pipe made thereof having a Tabor abrasion between about 0.01 and about 0.001 grams lost/1000 revolutions. These copolymers are formed by contacting ethylene with at least one mono-1-olefin comonomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. Additionally, the comonomers may be selected from mono-1-olefins having 4 to 10 carbon atoms, such as, 1-hexene, 1-butene, 4-methyl-1-pentene, 1-octene, and 1-decene. Further, these ethylene copolymers may be employed to produce PE-100 pipe having both small diameters and diameters in excess of 42 inches substantially without sagging or other gravitational deformation. Copolymers of ethylene and 1-hexene are disclosed which are used to produce PE-100 pipe.