| abstract |
A metal catalyst for hydrogenating unsaturated carbon-carbon bonds of copolymer is provided. The metal catalyst is a bimetallic complex comprising iridium and ruthenium. The metal catalyst has a formula comprising M 1 a M 2 b X m (L 1 ) n , wherein the M 1 is iridium, M 2 is ruthenium; X is hydrogen, chlorine, bromine, iodine or pseudo halide; L 1 is phosphine, bisphosphine, arsane or organic with nitrogen, sulfur and oxygen. |