Shell Oil Comapny

Coenraad H Wilms

Donald Reinalda

Frank J Janssen

Hendrik W Bruijn

Johannes A Van Broekhoven

Leonardus Petrus

Barend Mastenbroek

An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon in the presence of a reaction diluent and a catalyst composition formed from a palladium compound, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus, nitrogen or sulfur comprises conducting a first polymerization to produce a prepolymer and completing the polymerization at a lower temperature in the presence of sufficient prepolymer to constitute a substantial proportion of the polymerization mixture.

Polymerization of CO/olefin with two distinct temperatures

1. A catalyst system for olefin disproportionation containing molybdenum oxide supported on alumina prepared by a process which comprises:

Catalyst system for olefin disproportionation

A catalyst system for olefin disproportionation containing molebdenum oxide supported on alumina prepared by a process which comprises:

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Am Amsterdam, Netherlands

Coenraad H Wilms