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:
Dec. 10, 2019
Filed:
Jan. 06, 2017
Applicant:
Equistar Chemicals, Lp, Houston, TX (US);
Inventors:
Harilaos Mavridis, Lebanon, OH (US);
Chun D. Lee, Cincinnati, OH (US);
Steven W. Horwatt, West Chester, OH (US);
Sameer D. Mehta, Mason, OH (US);
Assignee:
Equistar Chemicals, LP, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 23/06 (2006.01); B29C 48/09 (2019.01); B29C 48/00 (2019.01); C08L 23/14 (2006.01); F16L 9/127 (2006.01); B29K 23/00 (2006.01); B29L 23/00 (2006.01);
U.S. Cl.
CPC ...
C08L 23/06 (2013.01); B29C 48/022 (2019.02); B29C 48/09 (2019.02); C08L 23/14 (2013.01); F16L 9/127 (2013.01); B29K 2023/065 (2013.01); B29L 2023/22 (2013.01); C08L 2203/18 (2013.01); C08L 2205/02 (2013.01); C08L 2207/062 (2013.01);
Abstract
The present disclosure relates to pipes comprising bimodal high molecular weight high density polyethylene which has been extruded in the presence of one or more organic peroxides that are present in an amount ranging from 30 ppm to 200 ppm. The pipe has an improved long-term hydrostatic strength. Also provided are methods for preparing pipes having these characteristics.