The Dow Chemical Company

Dow Global Technolgoies LLC

Jorge Soto

Peter N Nickias

Jasson T Patton

David D Devore

David R Wilson

Jerzy Klosin

Michael J Mullins

Richard E Campbell, Jr

Eugene Y Chen

David D Graf

D Patrick Green

William Jack Kruper, Jr

Daniel D VanderLende

Gordon R Roof

Gregory F Schmidt

James C Stevens

Francis J Timmers

Ravi B Shankar

R Vernon Snelgrove

Phillip S Athey

William J Kruper

Harold W Boone

Richard D Peffley

Joginder N Anand

Carlos Gilberto Ortiz

Timothy A Herzog

Bernard P Friedrichsen

Franis J Timmers

Metal complexes comprising a substituted inden-1-yl group or hydrogenated or partially hydrogenated derivative thereof, said group being substituted at least at the 2-position thereof with a Cligand group containing a secondary or tertiary substitution pattern at the &#x3b2;-carbon thereof, polymerization catalysts; and olefin polymerization processes using the same are disclosed.

Substituted indenyl metal complexes and polymerization process

Low molecular weight olefin polymers are prepared by a polymerization process employing titanium complexes comprising a 3-aryl-substituted cyclopentadienyl ring or substituted derivatives thereof as polymerization catalysts.

Low molecular weight ethylene interpolymers and polymerization process

Group 4 metal complexes of the constrained geometry type, catalysts derived therefrom, and polymerization processes using the same, characterized by an alkaryl-substituted silane bridging group are disclosed.

Alkaryl-substituted group 4 metal complexes, catalysts and olefin polymerization process

Transition metal donor complexes and olefin polymerization process

Group 4 metal complexes of the constrained geometry type, catalysts derived therefrom and polymerization processes using the same, characterized by a nitrogen containing aliphatic or cycloaliphatic moiety that is substituted with one or more aryl groups, an aryl-substituted silane bridging group, or one or more Group 14 organometalloid substituted hydrocarbyl substituents on the metal.

Substituted group 4 metal complexes, catalysts and olefin polymerization process

The invention includes a process for inhibiting deterioration in an olefin polymer by adding a phenolic free radical inhibitor during or before polymerization with a metallocene type transition metal catalyst without inactivating the free radical inhibitor because does not inhibit the transition metal catalyst activity. Preferably the free radical inhibitor is first to remove compounds which inhibit catalyst activity. The invention also includes a composition comprising at least one olefin monomer, a polymer of the monomer, a metallocene type transition metal catalyst and at least one free radical inhibitor having sufficient substituents to hinder the active inhibiting group such that it does not undesirably inhibit the transition metal catalyst.

Incorporation of free radical inhibitors in polyolefins

This invention relates to copolymers from alpha-olefins, especially ethylene and propylene, and hindered allyl phenols (and other heteroatom-containing olefins) using Ziegler catalysts. New polyolefin compositions containing reactive groups can be prepared from this process. These copolymers have improved coatability and blending characteristics.

Incorporation of functionalized comonomers in polyolefins

Yttrium containing metal complexes and olefin polymerization process

Disclosed is a process for preparing bridged Group 4 metal complexes containing a neutral diene ligand starting from the corresponding novel, metal diene containing complexes by reaction thereof with the divalent derivative of a bridged bidentate ligand compound. The novel, intermediate metal diene complexes, their formation from tetravalent metal salts and an integrated process combining both process steps are claimed.

Integrated process for preparation of diene complexes

Diene complexes of group 4 metals and process of preparation

Substituted indenyl containing metal complexes and olefin polymerization

Compositions comprising Group 4 metal complexes containing a diene moiety and activating cocatalysts are used as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers. Vinylidene aromatic monomers, particularly styrene are polymerized to form highly syndiotactic polymers.

Polymerization process using diene containing catalysts

Disclosed are novel, stable aqueous dispersions of ionic polyurethane-urea prepared by reacting an aliphatic or cycloaliphatic diisocyanate, an organic polyol, a large particle size hydrophobic copolymer polyol, a difunctional isocyanate reactive component, and a water dispersible amine chain extender. Also disclosed are the films and coated substrates obtained through the use of said dispersions as coatings.

Polyurethane-urea resins with incorporated hydrophobic microparticle

Growing community of inventors

Midland, MI, United States of America

Jorge Soto