Preparation of regio-regular copolymer of CO/olefin of at least three carbon atoms in the presence of tetraalkyl diphosphine

摘要

Regio-regular copolymers of carbon monoxide and an ethylenically unsaturated hydrocarbon are produced by contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a more active catalyst composition formed from a palladium compound, the anion of a strong nonhydrohalogenic acid, and a tetraalkyl diphosphine ligand.