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Dow Technology Investments Llc patents


Recent patent applications related to Dow Technology Investments Llc. Dow Technology Investments Llc is listed as an Agent/Assignee. Note: Dow Technology Investments Llc may have other listings under different names/spellings. We're not affiliated with Dow Technology Investments Llc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Dow Technology Investments Llc-related inventors


Crystalline ligand

A ligand crystal structure of 6,6′-[[3,3′,5,5′-tetrakis(1,1-dimethylethyl)-[1,1′-biphenyl]-2,2′-diyl]bis(oxy)]bisdibenzo[d,f][1,3,2]-dioxaphosphepin. Formule (i). ... Dow Technology Investments Llc

Method for the preparation of a stabilized organophosphorous compound solution

A process involving admixing a ligand and an alkanolamine. The process allows the use of ligand despite the presence of contaminating amounts of phosphorus acid, and improves the shelf life of premixed ligand solutions.. ... Dow Technology Investments Llc

Process for manufacturing ethylene oxide using scaled selectivity values

Disclosed herein are methods of using scaled selectivities to assist in determining whether changes to the value of a target ethylene oxide production parameter—such as ethylene oxide production rate—used in the process of epoxidizing ethylene with a high-selectivity catalyst, have caused the process to move away from optimal operation. If the deviation from optimal operation has not worsened, it is generally unnecessary to perform a full optimization study even if the value of a target ethylene oxide production parameter has changed, which reduces or eliminates process disturbances caused by carrying out such studies. ... Dow Technology Investments Llc

Hydroformylation process

Catalytic metal loss when using a hydroformylation catalyst comprising an organophosphite ligand is ameliorated by adding co to a strip gas vaporizer.. . ... Dow Technology Investments Llc

Hydroformylation process

The present invention relates generally to hydroformylation processes. In one embodiment, a process of the present invention comprises: (a) contacting co, h2, and at least one olefin under hydroformylation conditions sufficient to form at least one aldehyde product in the presence of a hydroformylation catalyst; (b) removing a product-containing liquid from the reaction zone and sending it to a vaporizer, which comprises a vaporizing zone and a vapor/liquid separation zone, wherein the product-containing liquid, which comprises crude product and catalyst, is heated in the vaporizing zone to form a mixture of gas and catalyst-containing liquid, which mixture is then phase separated in the separation zone, which separation zone has a liquid withdrawal port, a liquid region, a vapor space and a gas-liquid interface, wherein the liquid region comprises at least one divider plate, which optionally contains at least one perforation, wherein at least a portion of at least one divider plate is in proximity to the gas-liquid interface, with the proviso that at least a portion of at least one divider plate is at or below the interface, and wherein the temperature of the catalyst-containing liquid, measured at the liquid withdrawal port, is lower than the temperature of the vapor space.. ... Dow Technology Investments Llc

Stabilized organophosphorous compounds

A hydroformylation process wherein the hydrolyzable organophosphorous ligand component of the catalyst is supplied as a stabilized ligand composition comprising a hydrolyzable organophosphorous ligand and, per 100 moles compound, from 0.05 to 13 acid-neutralizing equivalents of an acid scavenger.. . ... Dow Technology Investments Llc

Reflux condenser

Methods, apparatus, and processes are provided for a condenser including flowing a vapor stream including formaldehyde into a tube bundle in a vertical upflow reflux condenser, where a tube in the tube bundle has a length to outside diameter ratio of greater than about 170:1, flowing a cooling fluid on a shell-side of the vertical upflow reflux condenser to condense at least a portion of the vapor stream, where the condensed portion of the vapor stream forms a wetted tube internal surface area on each tube in the generally upright tube bundle; and maintaining the vapor stream velocity at a rate that provides a liquid residence time where formaldehyde condensed on the wetted internal surface area of each tube can react with water to form methylene glycol, removing at least sixty percent (60%) of formaldehyde from the vapor stream fed to the condenser.. . ... Dow Technology Investments Llc

Hydroformylation process

A hydroformylation process wherein a water-soluble amine is contacted with the reaction fluid, liquid from the reactor is sent to an extraction zone, and a neutralized phosphorus acidic compound is at least partially removed from the extraction zone.. . ... Dow Technology Investments Llc

Method of formulating alkylene oxide catalyst in relation to catalyst reference properties

Methods of preparing a second high-efficiency, rhenium-promoted silver catalyst for producing alkylene oxide from an alkylene based on a first catalyst are disclosed and described. In accordance with the disclosed methods, the first and second catalysts include at least one promoter that includes a rhenium promoter. ... Dow Technology Investments Llc

Method for the production of ethylene oxide

A method for the production of ethylene oxide wherein the partial pressure of water vapor at the inlet of the reactor is at least about 8 kpa using a high purity carrier comprising alpha-alumina, a promoting amount of at least one group ia metal, and a promoting amount of rhenium.. . ... Dow Technology Investments Llc








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