Patent · US Active

Use of ruthenium and osmium catalysts for the metathesis of nitrile rubber

US11203679B2 · kind B2 · utility

0Cited by

11References

13Claims

0Family size

Assignee

Arlanxeo Deutschland GmbH · DE

Inventors

Silvia Schnitzler · Jüchen, DE
Sarah David · Dormagen, DE

Key dates

Filing date	Apr 26, 2019
Grant date	Dec 21, 2021
Priority date	—
Expiry date	Apr 26, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08C19/00
WIPO fieldChemical engineering
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.