E.i. Dupont De Nemours and Company

Stephan J Mclain

Lynda Kaye Johnson

Karl Jeffery Sweetman

Ying Wang

Steven Dale Ittel

Alex Sergey Ionkin

Lin Wang

Elizabeth Forrester McCord

Rinaldo Soria Schiffino

Alison Margaret Anne Bennett

Catherine E Radzewich

Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to silicon which are hydrolyzable. The polymers are useful for wire coating, crosslinked foams, pipes, and other uses.

Copolymers of olefins and vinyl- and allylsilanes

Olefin polymerizations employing a complex of a Group 8, 9, or 10 transition metal with a bidentate ligand as part of the polymerization catalyst system are improved by adding to the polymerization a silicon compound in which at least one atom of a Group 15 or 16 element is bound to a silicon atom. The polymerizations often have increased polymer productivity and/or the polymerization catalyst has a longer half life.

Olefin polymerization process

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Wilmington, DE, United States of America

Stephan J Mclain