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:
Feb. 01, 2022
Filed:
Aug. 21, 2018
Applicant:
Akzo Nobel Chemicals International B.v., Arnhem, NL;
Inventors:
Wilhelm Klaas Frijlink, Zwolle, NL;
Jan Martijn Van Der Schuur, Hengelo, NL;
Auke Gerardus Talma, Bathmen, NL;
Waldo Joseph Elisabeth Beek, Deventer, NL;
Hendrikus Johannes Maria Kamp, Lochem, NL;
Assignee:
NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/48 (2006.01); C08K 5/134 (2006.01);
U.S. Cl.
CPC ...
C08F 8/48 (2013.01); C08K 5/134 (2013.01);
Abstract
A process for enhancing the melt strength of polypropylene by extruding said polypropylene in a twin-screw extruder, under inert atmosphere, at a temperature between about 150° C. and about 300° C., and in the presence of about 0.1 to about 3.0 wt %, based on the weight of the polypropylene, of a para-substituted dibenzoyl peroxide.