Akzo N.v.

Akzo Nobel N.v.

David L Kershner

Paul K Hanna

Andrzej M Piotrowski

Andrzej M Piotowski

The disclosure describes a process for preparing a TiCl.sub.3 ether complex, such as TiCl.sub.3 (THF).sub.3, by reaction of corresponding TiCl.sub.4 ether complex with a metal powder, which produces a soluble metal chloride complex, in ether solvent. The TiCl.sub.3 ether complex that is prepared has a low aluminum content.

Process for producing trivalent titanium coordination complex

A linear alternating copolymer of carbon monoxide and propylene, which is substantially free of ester and ether linkages, is formed by the catalyzed reaction of carbon monoxide and propylene in a ketone solvent medium (e.g., acetone). Acid end groups can be introduced if a mixture of water and ketone is used.

Copolymer of carbon monoxide and propylene and process for its formation

Copolymer of carbon monoxide and propylene produced in water/ketone

Polyketone compositions can be prepared by polymerizing carbon monoxide and at least one ethylenically unsaturated monomer using a catalyst system containing a palladium compound, an anion of a non-hydrohalogenic acid, and a phosphorus compound bidentate ligand, a bis(diphenylphosphino)oxaalkane compound which can have the formulae: ##STR1## where R is an alkylene bridging group.

Process for preparing polyketone using bis(diphenylphosphino) oxaalkane

Polyketones can be formed from carbon monoxide and at least one olefin by using, as a catalytic complex, a catalyst which comprises a Group VIII metal, an anion of an acid having a pK.sub.a of less than about four, and a tin tetradentate phosphine ligand, preferably of the formula Sn(RPR'.sub.2).sub.4 where R is methylene and R' is phenyl.

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Tenafly, NJ, United States of America

David L Kershner