- Patent Title: Catalyst system containing a metathesis catalyst and at least one phenolic compound and a process for metathesis of nitrile-butadiene rubber (NBR) using the catalyst system
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Application No.: US17299985Application Date: 2019-12-02
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Publication No.: US11673130B2Publication Date: 2023-06-13
- Inventor: Karola Schneiders , Karsten Knebel , Volker Wege , Jurgen Kirsch
- Applicant: ARLANXEO DEUTSCHLAND GMBH
- Applicant Address: DE Dormagen
- Assignee: ARLANXEO DEUTSCHLAND GMBH
- Current Assignee: ARLANXEO DEUTSCHLAND GMBH
- Current Assignee Address: DE Dormagen
- Agency: Norris McLaughlin PA
- Priority: EP 212017 2018.12.12
- International Application: PCT/EP2019/083341 2019.12.02
- International Announcement: WO2020/120207A 2020.06.18
- Date entered country: 2021-06-04
- Main IPC: B01J31/22
- IPC: B01J31/22 ; B01J31/02 ; B01J31/18 ; B01J31/24 ; C08C19/02 ; C08C19/08 ; C08C19/00
Abstract:
The present invention relates to a catalyst system containing a metathesis catalyst containing at least one N-heterocyclic carbene ligand and at least one phenolic compound and to a process for performing the metathesis on nitrile rubbers for reducing their molecular weight using a metathesis catalyst containing at least one N-heterocyclic carbene ligand (NHC ligand) and at least one phenolic compound.
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