Bimetallic complex catalyst systems, their preparations and appl

Details Bimetallic complex catalyst systems, their preparations and appl Bimetallic complex catalyst systems, their preparations and appl

1998-05-08

2000-07-04

Lipman, Bernard

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

Synthetic resins

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

525339, 556 14, 556 23, 556 28, 556 30, 556 31, C08F 804

Patent

active

060840331

ABSTRACT:
The present invention relates to a new bimetallic complex catalyst system having the empirical formula of M.sup.1.sub.a M.sup.2.sub.b X.sub.m (L.sub.1).sub.n, wherein M.sup.1 is Rh or Ru, M.sup.2 is Ru or a lanthanide, when M.sup.1 is Rh, M.sup.2 is Ru or a lanthanide; when M.sup.1 is Ru, M.sup.2 is a lanthanide; X is H, Cl, Br or the combinations thereof; L.sub.1 is the ligand to the metal salt; 1.ltoreq.a.ltoreq.4; 1.ltoreq.b.ltoreq.2; 3.ltoreq.m.ltoreq.6; 6.ltoreq.n.ltoreq.15. The present invention also relates to a corresponding improved process for the hydrogenation of unsaturated copolymers, particularly NBR type rubber, wherein the above mentioned new bimetallic complex catalyst system is used.

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