Dow Global Technolgoies LLC

Dow Agrosciences LLC

Blue Cube IP LLC

Kurt Frederick Hirsekorn

Max Markus Tirtowidjojo

Debashis Chakraborty

William Jack Kruper, Jr

Juergen Eiffler

Thomas U Luebbe

Heinz Groenewald

Manfred Kokott

Marcus Wobser

Shirley Shaw Sexton

Peter Wenzel

Linfeng Chen

Hua Bai

Andrew T Heitsch

Avani Maulik Patel

Jeffrey A Sims

Mehmet Demirors

Teresa Plumley Karjala

Peter N Nickias

David M Pearson

David Gordon Barton

Mingzhe Yu

William J Kruper

Brien A Stears

Matthew Lee Grandbois

Thomas Peterson

Edward M Calverley

Thomas J Parsons

Patrick H Au-Yeung

Marlos Giuntini De Oliveira

Brayden E Glad

Gregory J Brennan

Jon W Hobson

Sadeka Onam

Yongchao Zeng

Elva L Lugo

Patrick Ho-Sing Au-Yeung

Holger Meeman

Holger Meemann

William J Kruper Jr

David Stephen Laitar

Thomas H Peterson

Thomas Ulrich Luebbe

Embodiments of the present disclosure are specifically related to LLDPE compositions produced from heterogeneous procatalyst compositions and blown and cast films incorporating these LLDPE compositions.

Ziegler-Natta catalyzed polyethylene resins and films incorporating same

The catalyst system includes a heterogeneous procatalyst, an electron donor, and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula CpTiXTiCpor CpTiX. In formula CpTiX, each Cp is a cyclopentadienyl substituted with at least one R, wherein Ris (C-C)alkyl; and each X is independently monoanionic or neutral, wherein each X is independently (C-C)hydrocarbon, (C-C)heterohydrocarbon, (C-C)hydrocarbyl, (C-C)heterohydrocarbyl, or a halogen atom.

Polymerization catalysts for production of polyethylene with high molecular weight

The catalyst system includes a heterogeneous procatalyst and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula CpTiX, In formula CpTiX, each Cp is a cyclopentadienyl substituted with at least one R, wherein Ris (C-C)alkyl; and each X is independently a halogen atom.

Polymerization of ethylene in solution processes using a Ziegler-Natta catalyst and a hydrogenation catalyst

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

The heterogeneous procatalyst of this disclosure includes a titanium species; a hydrocarbon soluble transition metal compound having a structure M(OR); a chlorinating agent having a structure A(Cl)(R), and a magnesium chloride component. M of M(OR)is a non-reducing transition metal other than titanium, the non-reducing transition metal being in an oxidation state of +2 or +3. Each Ris independently (C-C)hydrocarbyl or &#x2014;C(O)R, where Ris (C-C)hydrocarbyl. Subscript z of M(OR)is 2 or 3. Each Rand Rmay be optionally substituted with one or more than one halogen atoms, or one or more than one &#x2014;Si(R), where each Ris (C-C)hydrocarbyl. A of A(Cl)(R)is aluminum or boron; Ris (C-C)hydrocarbyl; and x is 1, 2, or 3; and a magnesium chloride component.

Ziegler-Natta catalysts for the production of polyethylene

The present invention provides adiabatic plug flow reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors comprise one or more designs that minimize the production of by-products at a desired conversion.

Adiabatic plug flow reactors and processes incorporating the same

Processes for the production of alkenes are provided. The processes make use of methane as a low cost starting material.

Process for the production of alkenes and/or aromatic compounds

Zero-valent silver compositions include 4-dimethylaminopyridine as stabilizers. The zero-valent silver and the 4-diemthylaminopyridine form stabilized nano-particles in solution. The zero-valent silver compositions may be used as catalysts in the metallization of non-conductive substrates.

Stabilized silver catalysts and methods

The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process.

Processes for the production of hydrofluoroolefins

The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20&#xb0; C. different from a desired reaction temperature.

Isothermal multitube reactors

Processes for the production of chlorinated and/or fluonnated propenes provide good product yield with advantageous impurity profiles in the crude product. Advantageously, the processes may be conducted at lower temperatures than 600&#xb0; C., or less than 500&#xb0; C., so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.

Process for the production of chlorinated and/or fluorinated propenes

The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures than 500&#xb0; C. so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.

Processes for the production of chlorinated and/or fluorinated propenes and higher alkenes

Isothermal multitube reactors and processes incorporating the same

Growing community of inventors

Midland, MI, United States of America

Kurt Frederick Hirsekorn