Symyx Technologies, Inc.

Dow Global Technolgoies LLC

Exxonmobil Chemical Patents Inc.

Symyx Solutions, Inc.

Unilever Home and Personal Care Usa, Division of Conopco, Inc.

Unilever Plc

Unilever, N.v.

Victor Oswaldo Nava-Salgado

Gary Michael Diamond

James A W Shoemaker

James M Longmire

Margarete K Leclerc

Anne Marie Lapointe

Lily Joy Ackerman

Pu Sun

Dominique Charmot

Jerzy Klosin

Vince J Murphy

Xiaohong Bei

Francis Charles Rix

Paul Mansky

Laughlin G McCullough

Keith Hall

Mingjun Liu

Han-Ting Chang

John F Walzer, Jr

Mark Micklatcher

Robert John Carswell

Giovanni Francesco Unali

Wilfried Blokzijl

Cynthia Lee Micklatcher

Robert Alan Hunter

Manikandan Jayaraman

Lily Ackerman

This invention relates to a method to selectively oligomerize olefins comprising contacting olefins with: 1) at least one diaryl-substituted diphosphine ligand; 2) a chromium metal precursor; and 3) optionally, one or more activators. In a particular embodiment, the method for selectively oligomerizing olefins includes trimerizing ethylene to selectively form 1-hexene.

Phosphine ligand-metal compositions, complexes, and catalysts for ethylene trimerizations

Metal complexes comprising certain polydentate heteroatom containing ligands, catalysts, and coordination polymerization processes employing the same are suitably employed to prepare polymers having desirable physical properties.

Polydentate heteroatom ligand containing metal complexes, catalysts and methods of making and using the same

Ligands, compositions, and metal-ligand complexes that incorporate heterocycle-amine compounds are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalyst have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene to form isotactic polypropylene.

Methods of using heterocycle-amine ligands, compositions, complexes, and catalysts

Copolymers of an olefin or alpha-olefin and a cyclic olefin where the cyclic olefin comprises greater than 50 mole percent by weight of the copolymer have been discovered. These copolymers have unique properties, including low density, high chemical resistance, low elongation to break, low shrinkage, good processability, low water absorption and good clarity. The copolymers also may be used as an engineering plastic. A process for making these copolymers is also disclosed, with the process comprising reaction of the olefin or alpha-olefin with the cyclic olefin under polymerization conditions including a catalyst comprising a metal-ligand complex having a bridged bi-phenyl phenol ligand structure.

Cyclic olefin copolymers, and methods of making the same

Ligands, compositions, and metal-ligand complexes that incorporate heterocycle-amine compounds are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalysts have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene to form isotactic polypropylene.

Heterocycle-amine ligands, compositions, complexes, and catalysts

A laundry treatment composition comprising at least one polymeric material comprising a cationic polymer moiety and a polydialkylsiloxane moiety, and at least one other component.

Laundry treatment compositions comprising a polymer with a cationic and polydialkylsiloxane moiety

Control agents that have an oxygen-nitrogen bond covalently bonded to a thiocarbonyl moiety are provided for living-type free radical polymerization of a wide variety of monomers, particularly vinyl monomers.

Control agents for living-type free radical polymerization and methods of polymerizing

Growing community of inventors

Cupertino, CA, United States of America

Victor Oswaldo Nava-Salgado