Process for the metathetic degradation of nitrile rubbers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C525S338000, C525S340000, C525S370000, C525S375000, C525S329100

Reexamination Certificate

active

07662889

ABSTRACT:
An improved process for the metathetic degradation of nitrile rubber using catalyst systems comprising the catalyst and also a phosphane or diphosphane is provided.

REFERENCES:
patent: 3700637 (1972-10-01), Finch, Jr.
patent: 4019130 (1977-04-01), Sakamoto et al.
patent: 4464515 (1984-08-01), Rempel et al.
patent: 4503196 (1985-03-01), Rempel et al.
patent: 4581417 (1986-04-01), Buding et al.
patent: 4631315 (1986-12-01), Buding et al.
patent: 4795788 (1989-01-01), Himmler et al.
patent: 4812528 (1989-03-01), Rempel et al.
patent: 4978771 (1990-12-01), Fiedler et al.
patent: 6683136 (2004-01-01), Guo et al.
patent: 2002/0107138 (2002-08-01), Hoveyda et al.
patent: 2004/0127647 (2004-07-01), Ong et al.
patent: 2004/0132891 (2004-07-01), Ong et al.
patent: 2007/0049700 (2007-03-01), Obrecht et al.
patent: 25 39 132 (1977-03-01), None
patent: 0 419 952 (1991-04-01), None
patent: 0 471 250 (1992-02-01), None
patent: 96/04289 (1996-02-01), None
patent: 97/06185 (1997-02-01), None
patent: 00/71554 (2000-11-01), None
patent: 02/100905 (2002-12-01), None
patent: 02/100941 (2002-12-01), None
patent: 03/002613 (2003-01-01), None
patent: 2004/035596 (2004-04-01), None
J. Am. Chem. Society 1997, 119, 3887-3897, Dias, Nguyen and Grubbs “Well-Defined Ruthenium Olefin Metathesis Catalysts: Mechanism and Activity” XP002433026.
Angew. Chem. Int. Ed., 2003, 42, 4592-4633; Richard R. Schrock and Amir H. Hoveyda; “Molybdenum and Tungsten Imido Alkylidene Complexes as Efficient Olefin-Metathesis Catalysts”.
Eur. J. Org. Chem. 2003, 963-966; Karol Grela and Mikhail Kim; A Good Bargain: An inexpensive, Air-Stable Ruthenium Metathesis Catalyst Derived from α-Asarone.
Angew. Chem. Int. Ed. 2002, 41, 4038-4040; Karol Grela, Syuzanna Harutyunyan and Anna Michrowska; “A Highly Efficient Ruthenium Catalyst for Metathesis Reactions”.
J. Org. Chem. 2004, 69, 6894-6896; Robert Bujok et al; “Ortho- and Para-Substituted Hoveyda-Grubbs Carbenes. An Improved Synthesis of Highly Efficient Metathesis Initiators”.
Chem. Eur. J. 2004, 10, 777-784; Krause, Nuyken, Wurst and Buchmeiser; “Synthesis and Reactivity of Homogeneous and Heterogeneous Ruthenium-Based Metathesis Cataysts Containing Electron-Withdrawing Ligands”.
Angew. Chem. Int. Ed. 2004, 43, 6161-6165; Patricio E. Romero, Warren E. Piers, and Robert McDonald; “Rapidly Initiating Ruthenium Olefin-Metathesis Catalysts” +.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for the metathetic degradation of nitrile rubbers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the metathetic degradation of nitrile rubbers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the metathetic degradation of nitrile rubbers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4170898

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.