Dow Global Technolgoies LLC

The Dow Chemical Company

Harold W Boone

Paul C Vosejpka

Kevin A Frazier

Daniel D VanderLende

James C Stevens

Carl N Iverson

Shrikant Dhodapkar

Vincenzo Busico

Santosh S Bawiskar

Roberta Cipullo

Francesca Alfano

Michael J Mullins

Yi Jin

Peter N Nickias

Pradeep Jain

R Vernon Snelgrove

Phillip S Athey

Jorge Soto

Michael D Turner

Ian M Munro

Michael Joseph Zogg, Jr

Guang Ming Li

Daniel D Vanderlende

Wayde V Konze

Rennisha R Wickham

Remi A Trottier

Frank J Cerk

Kate R Brown

Kevin P Peil

Gregory Earl Johnson

Intan M Hamdan

Daniel S Rynearson

George W Haun, Jr

Michelle D Dirk

Barry D Kluge, Jr

Jr Michael J Zogg

Jr George W Haun

Gregory E Johnson

Jr Barry D Kluge

Joseph N Iii Coalter

A process to form coated polymer particles comprising polymer particles formed from a polymer composition comprising an olefin-based polymer, and a coating formed from a coating composition comprising an aqueous metal acid dispersion and an aqueous polysiloxane emulsion, said process comprising the following: mixing together the aqueous metal acid dispersion and the aqueous polysiloxane emulsion to form a dispersion/emulsion mixture; applying the dispersion/emulsion mixture to a portion of the surfaces of the polymer particles to form wet-coated polymer particles; drying the wet-coated polymer particles to form the coated polymer particles. The aqueous metal acid dispersion and the aqueous polysiloxane emulsion may also be applied, individually, in separate steps.

Coated olefin-based polymers with reduced blocking

A process to form a first composition comprising a functionalized olefin-based polymer comprises: a) polymerizing a composition comprising an olefin to form a reaction product comprising an olefin-based polymer; b) subjecting at least a portion of the reaction product to at least one devolatilization to form a polymer-rich melt, wherein step b) occurs downstream from and in-line with step a); and c) reacting at least a portion of the polymer-rich melt with at least one functionalization agent and, optionally, at least one free-radical initiator to form the first composition, wherein step c) occurs downstream from and in-line with step b), wherein 'the viscosity of the functionalized olefin-based polymer (177&#xb0; C./350&#xb0; F.)' to 'the viscosity of the olefin-based polymer (177&#xb0; C./350&#xb0; F.)' is from 0.1 to 5.0.

Non-extrusion process for functionalization of low viscosity polyolefins

A process to form an olefin-based polymer, said process comprising at least the following steps: a) polymerizing a reaction mixture comprising an olefin, in at least one reactor, in a solution polymerization, to form a polymer solution; b) feeding at least a portion of the polymer solution through at least one devolatilizer, to form the olefin-based polymer, in melt form; c) feeding at least a portion of the olefin-based polymer, in melt, form through a heat exchanger, and then into a pastillation apparatus to form polymer particles.

Polymerization and isolation of low viscosity polymers using pastillation technology

An apparatus and method for delivery of additives(s), e.g., catalyst, co-catalyst, scavengers, and/or other reaction- or product-modifying agents, to a reaction or mixing site, such as a reaction vessel, offers the capability for multi-additive delivery and customization of additive selection, flow and flow rate, and if desired, mixing thereof, without production train shutdowns. The invention includes at least two additive sources that are detachably connected, with conduit, to the reaction or mixing site, and a process control means, preferably automated, that is capable of initiating, terminating, and determining the rate of flow from the additive sources.

Multi-additive delivery system

Group 4 metal complexes comprising a polyvalent, heteroaryl donor ligand and their use as components of olefin polymerization catalysts, especially suited for preparing propylene copolymer products having high isotacticity and low molecular weight, are disclosed.

High activity, low molecular weight olefin polymerization process

Group 4 metal complexes comprising a polyvalent, heteroaryl donor ligand and their use as components of olefin polymerization catalysts, especially suited for preparing propylene/ethylene copolymer products having high isotacticity and low molecular weight, are disclosed.

The invention relates to a process for preparing a stable 2-substituted benzofuran-3-yl borate ester corresponding to the formula: said process comprising contacting 3-bromo-2-substituted-benzofuran corresponding to the formula: with an Calkyllithium at a temperature less than &#x2212;60&#xb0; C. to form 3-lithio-2-substititued-benzofuran, contacting the 3-lithio-2-substituted- benzofuran at a temperature less than &#x2212;60&#xb0; C. with an borate ester corresponding to the formula: and recovering the resulting borate ester product,

Process for preparing A 2-substituted benzofuran-3-yl borate ester

Hafnium complexes of heterocyclic organic ligands having improved solubility in aliphatic hydrocarbon solvents and their use as components of olefin polymerization catalysts as well as novel syntheses of component parts thereof are disclosed.

Hafnium complexes of heterocyclic organic ligands

A catalyst composition comprising a zirconium complex of a polyvalent aryloxyether and the use thereof in a continuous solution polymerization of ethylene, one or more Colefins, and a conjugated or nonconjugated diene to prepare interpolymers having improved processing properties are disclosed.

Ethylene/&#x3b1;-olefin/diene solution polymerization process and polymer

A process for forming tactic polymers employing at least one olefin polymerization catalyst comprising a non-racemic mixture of the R- and S-enantiomers of a metal complex containing at least one asymmetrically substituted (chiral) carbon atom, and a chain shuttling agent, a polar aprotic organic compound, or both a chain shuttling agent and a polar aprotic organic compound.

Tactic polymer polymerization process using chiral catalysts

A process for forming a high molecular weight, multi-block copolymer comprising two or more chemically distinguishable segments or blocks, the process comprising polymerizing one or more olefin monomers in the presence of a chain shuttling agent and a catalyst composition comprising two or more olefin polymerization catalysts capable of preparing polymers having differing chemical or physical properties under equivalent polymerization conditions, or a catalyst composition comprising at least one olefin polymerization catalyst containing multiple active catalyst sites capable of preparing polymers having differing chemical or physical properties.

Multi-block copolymer process using polar solvents

Group 4 metal complexes useful as addition polymerization catalysts of the formula:wherein

High activity olefin polymerization catalyst and process

Transition metal donor complexes and olefin polymerization process

Growing community of inventors

Sugar Land, TX, United States of America

Harold W Boone