Method of preparing phosphonium compound for cyclic olefin...

Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C556S013000

Reexamination Certificate

active

07638653

ABSTRACT:
Provided is a method of preparing a phosphonium compound by reacting a protic phosphonium compound represented by [(R1)—P(R2)a(R2′)b]HX and a salt compound represented by [C][Ani]. Therefore, a phosphonium compound used as a cocatalyst for the preparation of a polar cyclic olefin polymer can be produced at high yield.

REFERENCES:
patent: 5468819 (1995-11-01), Goodall et al.
patent: 5569730 (1996-10-01), Goodall et al.
patent: 5705503 (1998-01-01), Goodall et al.
patent: 5912313 (1999-06-01), McIntosh, III et al.
patent: 6031058 (2000-02-01), McIntosh, III et al.
patent: 6455650 (2002-09-01), Lipian et al.
patent: WO 2005/019277 (2005-03-01), None
Sen, A., et al.,Catalysis by Solvated Transition-Metal Cations. Novel Catalytic Transformations of Alkenes by Tetrakis(acetronitrile)palladium Dietrafluoroborate. Evidence for the Formation of Incipient Carbonium Ions of Intermediates, Chandlee Laboratory, Dept. of Chemistry, 1981 American Chemical Society, pp. 4627-4629.
Hennis, A.D., et al.,Novel, Efficient, Palladium-Based System for the Polymerization of Norbornene Derivaties: Scope and Mechanism, 2001 American Chemical Society, pp. 2802-2812.

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

Method of preparing phosphonium compound for cyclic olefin... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of preparing phosphonium compound for cyclic olefin..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing phosphonium compound for cyclic olefin... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4145410

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