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:
Oct. 14, 2025
Filed:
Feb. 10, 2021
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventors:
Carmine D'Agostino, Mississauga, CA;
Gilbert Arnould, Calgary, CA;
Celine Bellehumeur, Calgary, CA;
Henry Hay, Calgary, CA;
Van Dang, Calgary, CA;
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 23/0807 (2025.01); C08K 5/00 (2006.01);
U.S. Cl.
CPC ...
C08L 23/0815 (2013.01); C08K 5/005 (2013.01); C08L 2201/08 (2013.01); C08L 2205/025 (2013.01);
Abstract
A rotomolding composition comprises a blend of two polyethylenes: 1) a well stabilized polyethylene; and 2) a poorly stabilized polyethylene having a very low flow rate. The poorly stabilized polyethylene is further characterized by having a large particle size (from 500 to 3000 microns). Rotomolded parts prepared from the composition have a rough inner surface. Polyurethane foam adheres well to this rough surface.