Cryovac, Inc.

California Institute of Technology

Chunming Wang

Robert Tan Li

Donald Albert Bansleben

Robert Howard Grubbs

Todd Ross Younkin

Stefan K Friedrich

Robert H Grubbs

Sukbok Chang

Stefan Kilian Friedrich

LeRoy Jones, Ii

The present invention is directed to certain novel late transition metal salicylaldimine chelates and, further, to novel bidentate ligand compounds of substituted salicylaldimine, and their utility as polymerization catalysts alone or in combination with adjunct agent and/or Lewis base in processes of polymerizing olefin monomers and copolymerizing olefin monomers with functionalized olefin monomers.

Catalyst compositions and processes for olefin polymers and copolymers

Catalyst compositions and processes for olefin oligomerization and polymerization

Substantially linear vinylene carbonate/1-olefin copolymers, a process of forming the same, and packaging materials incorporating the same are described. These copolymers are formed by reacting the component monomers in the presence of a single component, non-ionic polymerization catalyst at relatively low temperatures and pressures.

Linear vinylene carbonate/1-olefin copolymer and articles formed

The present invention generally relates to ruthenium and osmium carbene catalysts for use in olefin metathesis reactions. More particularly, the present invention relates to Schiff base derivatives of ruthenium and osmium carbene catalysts and methods for making the same. The inventive catalysts are generally prepared by the treatment of unmodified catalysts with the salts of the desired Schiff base ligands, in which an anionic and a neutral electron donating ligands of the unmodified catalysts are simultaneously replaced. The Schiff base derivatives of the ruthenium and osmium carbene catalysts show unexpectedly improved thermal stability while maintaining high metathesis activity, even in polar protic solvents. Although the inventive catalysts may be used in all metathesis reactions, use of these catalysts for ring-closing metathesis ('RCM') reactions is particularly preferred.

Schiff base derivatives of ruthenium and osmium olefin metathesis

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Highland Park, NJ, United States of America

Chunming Wang