Method for the degradation of nitrile rubber by metathesis...

Details Method for the degradation of nitrile rubber by metathesis... Method for the degradation of nitrile rubber by metathesis...

2006-08-25

2008-12-30

Rábago, Roberto (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S329100, C525S338000, C525S370000, C526S341000, C526S342000

Reexamination Certificate

active

07470750

ABSTRACT:
A novel process for the degradation of nitrile rubber by metathesis using ruthenium- or osmium-based catalysts which have both a substituted or unsubstituted imidazolidine ligand and a carbene ligand bearing a phosphonium radical is provided.

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Romero et al., Angew. Chem. Int. Ed. 43 (2004) 6161-6165.
Angew. Chem. Int. Ed. 2004, 43, 6161-6165, Patricio E. Romero, Warren E. Piers, and Robert McDonald,“Rapidly Initiating Ruthenium Olefin-Metathesis Catalysts”.

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