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:
Jun. 14, 2022
Filed:
Jul. 11, 2019
Nova Chemicals (International) S.a., Fribourg, CH;
XiaoChuan Wang, Calgary, CA;
Peter Zoricak, Calgary, CA;
Brian Molloy, Airdrie, CA;
Qinyan Wang, Calgary, CA;
Lawrence VanAsseldonk, Sarnia, CA;
Norman Aubee, Okotoks, CA;
NOVA CHEMICALS (INTERNATIONAL) S.A., Fribourg, CH;
Abstract
A polyethylene composition includes a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 15,000 to 100,000 and a molecular weight distribution Mw/Mn of <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a soluble fraction in a CEF analysis of at least 10 weight percent. Film made from the polyethylene composition may have a machine direction 1% secant modulus of □190 MPa (at a film thickness of about 1 mil), a seal initiation temperature (SIT) of ≤100° C. (at a film thickness of about 2 mil), an area of hot tack window (AHTW) of ≥160 Newtons·C° (at a film thickness of about 2 mil) and an oxygen transmission rate (OTR) of ≥650 cm3 per 100 inch2 per day (at a film thickness of about 1 mil).