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:
Dec. 21, 2021
Filed:
Apr. 26, 2019
Applicant:
Arlanxeo Deutschland Gmbh, Dormagen, DE;
Inventors:
Silvia Schnitzler, Jüchen, DE;
Sarah David, Dormagen, DE;
Assignee:
ARLANXEO DEUTSCHLAND GMBH, Dormagen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08C 19/02 (2006.01); C08L 9/02 (2006.01); B01J 31/22 (2006.01); C08C 19/00 (2006.01);
U.S. Cl.
CPC ...
C08L 9/02 (2013.01); B01J 31/2208 (2013.01); B01J 31/2278 (2013.01); C08C 19/02 (2013.01); B01J 2231/546 (2013.01); B01J 2231/645 (2013.01); B01J 2531/821 (2013.01); C08C 2019/09 (2013.01);
Abstract
The present invention relates to the use of Ru and Os carbene complexes with a hydroxamic acid (ester) function for the metathesis degradation of nitrile rubber (NBR). The invention further relates to a method for producing hydrogenated nitrile rubbers, by subjecting a nitrile rubber to a metathesis degradation in the presence of the said catalyst, and the degraded nitrile rubber obtained subsequently undergoes a hydrogenation, preferably in situ.