Dow Global Technolgoies LLC

Daniela Ferrari

Sean W Ewart

Pradeep Jain

Yijian Lin

Brien A Stears

Garmt R Meima

David Gordon Barton

Dean M Millar

Adam Chojecki

Alec Y Wang

Robert J Gulotty, Jr

Mark McAdon

Timothy Wayne Gambrel

Yu Liu

Susan G Brown

Edward O Madenjian

Thomas Davidian

Gerolamo Budroni

Palanichamy Manikandan

Rony S Vanspeybroeck

Gregory J Brennan

Evelyn Auyeung

Neelesh J Rane

Alberto Martinez Joaristi

Billy B Bardin

Rony Vanspeybroeck

Embodiments of a method of producing a multimodal ethylene-based polymer comprising a first catalyst and a second catalyst in a first solution polymerization reactor and a third catalyst in a second solution polymerization reactor.

Process for the production of multimodal ethylene-based polymers

A solution polymerization process for producing ethylene-based polymer includes introducing ethylene monomer, hydrocarbon solvent, and Ziegler-Natta catalyst into an entrance of a solution polymerization reactor. An ethylene-based polymer is produced by solution polymerizing the ethylene monomer in hydrocarbon solvent. Subsequently, a catalyst deactivator is introduced into x the exit of the solution polymerization reactor, thereby producing hydrochloric acid byproduct. The catalyst deactivator includes long chain carboxylate and at least one cation selected from Groups 1, 2, and 12 of the IUPAC periodic table, with the exception of calcium. The catalyst deactivator reduces the effectiveness of the Ziegler-Natta catalyst and neutralizes the hydrochloric acid by forming a chloride salt other than calcium chloride.

Ziegler-Natta catalyst deactivation and neutralization

Disclosed herein is a method for reducing isomerization during the copolymerization of ethylene with an &#x3b1;-olefin comprising adding to a reactor a reaction mixture comprising hydrogen, ethylene, an &#x3b1;-olefin, a solvent and a catalyst; where the catalyst does not include a chain shuttling agent that comprises dialkyl zinc; heating the reactor to a first temperature to react the ethylene with the &#x3b1;-olefin to form a copolymer; discharging from the reactor a first product stream to a heat exchanger; where the product stream comprises the copolymer; adding to the product stream prior to the heat exchanger a first additive that is operative to reduce isomerization of the &#x3b1;-olefin; and discharging from the heat exchanger a second product stream.

Method for isomer reduction during polymerization and system for accomplishing the same

The invention provides a process to form an ethylene/a-olefin interpolymer, comprising at least the following steps A) through C): A) polymerizing, in at least one reactor, at least one reaction mixture comprising ethylene and the a-olefin, in a solution polymerization, and in the presence of at least the following components I), II) and III): I) at least one compound of Structure 1, as described herein; II) at least one co-catalyst, as described herein; III) at least one compound of Structure 2, as described herein; B) separating the final polymer solution into at least a polymer-rich solution and a polymer-free solution; and optionally, at least a portion of the polymer-free solution is recycled back to the reactor; C) maintaining the level of the at least one compound of Structure 2 in the at least one reactor, from 100 ppm to 10,000 ppm, as described herein.

Process to form ethylene/&#x3b1;-olefin interpolymers

Convert dichloroisopropyl ether into a halogenated derivative by contacting the dichloroisopropyl ether with a source of hydrogen and a select heterogeneous hydrogenation catalyst under process conditions selected from a combination of a temperature within a range of from 50 degrees centigrade (&#xb0; C.) to 350&#xb0; C., a pressure within a range of from atmospheric pressure (0.1 megapascals) to 1000 pounds per square inch (6.9 MPa), a liquid feed volume flow to catalyst mass ratio between 0.5 and 10 L/Kg*h and a volume hydrogen/volume liquid ratio between 100 and 5000 ml gas/ml liquid. The halogenated derivative is at least one of 1-chloro-2-propanol and 1,2-dichloropropane 1, and glycerin monochlorohydrin.

Process for hydrogenating dichloroisopropyl ether

Catalyst compositions for producing mixed alcohols from a synthesis gas feed. The catalyst composition comprises a catalytic metal combination on a catalyst support, a first optional promoter and a second optional promoter, where the catalytic metal combination consists essentially of iridium, vanadium, and molybdenum.

Catalyst compositions for producing mixed alcohols

Catalytic composition for producing an alpha-olefin and methods of making same. The catalytic composition includes a gamma-alumina substrate dopes with at least one element consisting of bismuth, copper, gallium, phosphorus, tin, and zinc, an amount of each element being within a range of from 150 parts per million to 1000 parts per million relative to a total doped weight of the gamma-alumina substrate. Additionally, at least one element is combined with at least one element consisting of cesium, lithium, and magnesium, an amount of each element being within the range of from 150 parts per million to 1000 parts per million relative to the total doped weight of the gamma-alumina substrate.

Catalytic composition for production of alpha-olefins

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Rosharon, TX, United States of America

Daniela Ferrari