Patent ID: 6084033
Filing Date: 2000-07-04
Classification: B01J,C08C,C08F

Abstract:
A bimetallic complex catalyst system for the selective hydrogenation of carbon carbon double bond (C.dbd.C) in unsaturated copolymers, having the following empirical formula:M.sup.1.sub.a M.sup.2.sub.b X.sub.m (L.sub.1).sub.n,wherein M.sup.1 is rhodium (Rh) or ruthenium (Ru), M.sup.2 is ruthenium (Ru) or a rare earth metals of the lanthanum group (lanthanide); when M.sup.1 is rhodium (Rh), M.sup.2 is ruthenium (Ru) or a rare earth metal of the lanthanum group (lanthanide); and when M.sup.1 is ruthenium (Ru), M.sup.2 is a rare earth metal of the lanthanum group (lanthanide);X is H, Cl, Br or the combinations thereof;L.sub.1 is organophosphine (PR.sub.1 R.sub.2 R.sub.3), diphosphane (R.sub.1 R.sub.2 P(CH.sub.2).sub.n PR.sub.3 R.sub.4), organoarsine (AsR.sub.1 R.sub.2 R.sub.3) or organic compounds containing N, S, O atoms or mixtures thereof, the groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are either identical or different, and are C.sub.1 .about.C.sub.6 alkyl, C.sub.6 .about.C.sub.12 cycloalkyl, aryl, C.sub.7 .about.C.sub.12 aralkyl, or aryloxy groups;1.ltoreq.a.ltoreq.4;1.ltoreq.b.ltoreq.2;3.ltoreq.m.ltoreq.6; and6.ltoreq.n.ltoreq.15.