Dow Global Technolgoies LLC

Mingzhe Yu

Peter N Nickias

David Gordon Barton

Kurt Frederick Hirsekorn

Andrew T Heitsch

Mehmet Demirors

Stephen W King

Linfeng Chen

Wanglin Yu

Thomas Peterson

Wen-Sheng Lee

Sung-Yu Ku

Jeffrey A Sims

Sadeka Onam

Le Wang

Jing L Houser

Paulami Majumdar

Thomas H Peterson

A method including the step contacting an olefin, an alcohol, a metallosilicate catalyst and a solvent, wherein the solvent comprises structure (I): wherein Rand Rare each selected from the group consisting of an aryl group and an alkyl group with the proviso that at least one of Rand Ris an aryl group, further wherein n is 1-3.

Metallosilicate catalyst solvents for the formation of alkylene glycol monoalkyl ethers

A heterogeneous procatalyst includes a preformed heterogeneous procatalyst and a metal-ligand complex. The preformed heterogeneous procatalyst includes a titanium species and a magnesium chloride (MgCl) support. The metal-ligand complex has a structural formula (L)M(Y)(XR), where M is a metal cation; each L is a neutral ligand or (═O); each Y is a halide or (C-C)alkyl; each XRis an anionic ligand in which X is a heteroatom or a heteroatom-containing functional group and Ris (C-C)hydrocarbyl or (C-C) heterohydrocarbyl; n is 0, 1, or 2; m is 0-4; and b is 1-6. The metal-ligand complex is overall charge neutral. The heterogeneous procatalyst exhibits improved average molecular weight capability. A catalyst system includes the heterogeneous procatalyst and a cocatalyst. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.

Ziegler-Natta catalyst with an electron donor compound for increasing polymer molecular weight

A heterogeneous procatalyst includes a titanium species, a magnesium chloride component, and a chlorinating agent having a structure A(Cl)x(R)3-, where A is aluminum or boron, Ris a (C-C) hydrocarbyl, and x is 1, 2, or 3. The magnesium chloride component may be thermally treated at a temperature greater than 100 C for at least 30 minutes before or after introduction of the chlorinating agent and titanium species to the heterogeneous procatalyst. The heterogeneous procatalyst having the thermally treated magnesium chloride exhibits improved average molecular weight capability. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.

Ziegler-Natta catalyst system having a thermally treated magnesium chloride component

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Midland, MI, United States of America

Mingzhe Yu