Dow Global Technolgoies LLC

The Dow Chemical Company

Hoechst Marion Roussel

Merrell Dow Pharmaceuticals

Paul C Vosejpka

Francis J Timmers

Harold W Boone

James C Stevens

David D Devore

Richard E Campbell, Jr

Duane R Romer

Daryoosh Beigzadeh

Brian A Jazdzewski

Hendrik E Tuinstra

Timothy Todd Wenzel

Cynthia L Rand

David H Bank

Aleksander Jozef Pyzik

R Garth Pews

Edmund M Carnahan

Kevin A Frazier

Christian T Goralski

Daniel J Arriola

Daniel D VanderLende

George J Frycek

Zenon Lysenko

Burkhard Eric Wagner

Jonathan C Evans

Nicole L Wagner

Guenter A Jueptner

Brian G Landes

Jan Willem Van Egmond

Robin Paul Ziebarth

Michael T Malanga

James J O'Brien

Carl N Iverson

Roger B Painter

Nicholas M Shinkel

P J Thomas

Joseph N Coalter, Iii

Clifford S Todd

Lewis J Fouts, Jr

Dennis A Hucul

Bassam S Nader

Andrew S Kende

Ted A Morgan

Daniel Randolph Henton

Richard G Pews

Jun Jason Cai

Robert M Campbell

Ian M Munro

Larry N Ito

Daniel D Vanderlende

Bob R Maughon

Ashish Kotnis

Kevin P Peil

Keith Jeffrey Watson

Robert P Dion

Weshi Wu

Jr Richard E Campbell

Joseph N Iii Coalter

Brian A Jazdazewski

Gregory M Godziela

A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by grain boundary phase comprised of silica, yttrium and oxygen wherein the amount of alkali metals, alkaline earth metals and other transition metals not including rare earth metals is at most 2% by weight of the grain boundary phase.

Porous mullite bodies having improved thermal stability

A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by a grain boundary phase comprised of silica, rare earth element that is Eu, Gd, Nd or mixture thereof and oxygen and optionally yttrium, wherein the grain boundary phase has a amount of an alkali, an alkaline earth metal and a transition metal other than yttrium that is at most 2% by weight of the grain boundary phase.

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

Organic polymer particles are provided in a cement composition that is used to apply a skin to a ceramic honeycomb, or to bond the ceramic honeycomb to another honeycomb or another material. The presence of the organic polymer particles reduces the penetration of the cement composition through porous walls of the honeycomb. In this way, less blocking of the honeycomb cells is seen, and the reduction in thermal shock performance that is often seen when cement compositions are applied to ceramic honeycombs is reduced.

Process for producing cemented and skinned ceramic honeycomb structures

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

Meta-block copolymers and a process for preparing a product mixture comprising meta-block copolymers by contacting a metathesis catalyst under metathesis conditions with a composition comprising two or more ethylenically unsaturated polymers, said unsaturation defining one or more polymer segments in each ethylenically unsaturated polymer, at least one polymer segment in at least one ethylenically unsaturated polymer being chemically distinguishable from at least one polymer segment in at least one other ethylenically unsaturated polymer, characterized in that each meta-block copolymer in the product mixture comprises a random distribution of said chemically distinguishable polymer blocks.

Production of meta-block copolymers by polymer segment interchange

Two or more chemically distinguishable ethylenically unsaturated polymers, at least one having from 0.001 to 50 mole percent unsaturation and at least one other having an expected Tg or measured Tm value greater than 100&#xb0; C. are cross-metathesized to form thermoplastic elastomers having improved performance properties.

Production of metathesis products by high melting polymer segment interchange

A composition comprising a polymerization modifier for the copolymerization of at least one olefin monomer and 1-octene and a polymerization process using the polymerization modifier.

Polymerization modifiers

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 composition comprising a polymerization modifier for the copolymerization of at least one olefin monomer and propylene and a polymerization process using the polymerization modifier.

A cross-metathesized product mixture is prepared by contacting a metathesis catalyst under metathesis conditions with a composition comprising two or more chemically distinguishable ethylenically unsaturated polymers, at least one of said ethylenically unsaturated polymers (first polymer) having from 0.001 to 50 mole percent unsaturation and at least one other of said ethylenically unsaturated polymers (second polymer) being an amorphous polymer having a Tg less than 0&#xb0; C. and having from 0.001 to 5 mole percent unsaturation.

Production of metathesis products by amorphous polymer segment interchange

A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin polymerization processes resulting therefrom.

A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising:

Supported catalysts for manufacture of polymers

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Midland, MI, United States of America

Paul C Vosejpka