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:
Jul. 17, 2018
Filed:
May. 31, 2017
Nova Chemicals (International) S.a., Fribourg, CH;
Celine Bellehumeur, Calgary, CA;
Brian Molloy, Airdrie, CA;
Hamidreza Khakdaman, Houston, TX (US);
XiaoChuan Wang, Calgary, CA;
Tieqi Li, Calgary, CA;
Christopher Dobbin, Calgary, CA;
Fazle Sibtain, Calgary, CA;
Kenneth Taylor, Sarnia, CA;
NOVA Chemicals (International) S.A., Fribourg, CH;
Abstract
This disclosure relates to rotomolded articles, having a wall structure, where the wall structure contains at least one layer containing an ethylene interpolymer product, or a blend containing an ethylene interpolymer product and an ethylene polymer, where the ethylene interpolymer product has a Dilution Index (Y) greater than 0 and improved Environmental Stress Crack Resistance (ESCR). The ethylene interpolymer product has a melt index from about 0.5 to about 15 dg/minute, a density from about 0.930 to about 0.955 g/cm, a polydispersity (M/M) from about 2 to about 6 and a CDBIfrom about 50% to about 98%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.