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:
Mar. 10, 2026
Filed:
Mar. 24, 2021
Nova Chemicals (International) S.a., Fribourg, CH;
Soheil Sadeghi, Calgary, CA;
Fazle Sibtain, Calgary, CA;
Zengrong Zhang, Calgary, CA;
Niousha Kazemi, Calgary, CA;
Monika Kleczek, Calgary, CA;
Vinod Konaganti, Calgary, CA;
Bronwyn Gillon, Calgary, CA;
Shivendra Goyal, Calgary, CA;
Sepideh Kasiri, Calgary, CA;
Stephen Salomons, Calgary, CA;
Kenneth Taylor, Sarnia, CA;
Mehdi Keshtkar, Calgary, CA;
NOVA CHEMICALS (INTERNATIONAL) S.A., Fribourg, CH;
Abstract
This disclosure relates to ethylene interpolymer compositions, films prepared therefrom and a nonlinear rheology method capable of determining presence of long-chain branched structures in these ethylene interpolymer compositions. Ethylene interpolymer compositions disclosed herein specifically relates to ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δ, greater than or equal to 0.01, satisfying 0.01×(Z−48)≤Δ≤0.01×(Z−60)inequality wherein Z is a normalized molecular weight defined by (I) where Mw and Me are the weight average and entanglement molecular weights; and a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity, M/M, from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI) from about 1% to about 98%.