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:
May. 19, 2026
Filed:
Dec. 03, 2021
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventors:
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 210/16 (2006.01); C08F 4/659 (2006.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
C08F 210/16 (2013.01); C08F 4/65908 (2013.01); C08F 4/65912 (2013.01); C08J 5/18 (2013.01); C08J 2323/08 (2013.01);
Abstract
The copolymerization of ethylene with vinylcyclohexane (VCH) is carried out with a catalyst system comprising a bridged hafnocene. High levels of vinylcyclohexane incorporation can be achieved affording ethylene-vinylcyclohexane copolymers having low degrees of crystallinity as measured by differential scanning calorimetry (Xc in %). These copolymers have good barrier properties when made into film.