Union Carbide Corporation

Union Carbide Chemicals & Plastics Technology Corporation

Union Carbide Chemicals and Plastics Company, Inc.

John H Robson

George Ernest Keller, Ii

John Robert Briggs

Brian Terry Keen

Kathleen F George

Lise Dahuron

Benjamin Bikson

Hwaili Soo

Erich Marcus

Bernard C Ream

George L O'Connor

Joseph A Collier

Robert D Best

Operative fluids containing lower glycol are contacted with semi-permeable membranes under reverse osmosis conditions to permeate lower glycol to provide a reclaimed lower glycol product. Exemplary operative fluids include antifreeze solutions, heat transfer fluids, deicers, quenchants, hydraulic fluids, lubricants, solvents and absorbents.

Treatment of lower glycol-containing operative fluids

A process for the catalytic hydrolysis of alkylene oxide to alkylene glycol using a hydrothermally stable, mixed metal framework catalyst composition selected from

Mixed metal framework compositions for monoalkylene glycol production

A method is disclosed for separating impurity components, UV absorbers and/or UV absorber precursors contained in an ethylene glycol-water stream thereby desirably allowing the recovery of the glycols contained in such stream in an economical and efficient manner. Specifically, these undesirable components are separated by contacting the ethylene glycol-water stream with a suitable semi-permeable membrane to effect such separation.

Treatment of impurity-containing liquid streams in ethylene oxide/glycol

Alkylene glycols are produced by the reaction of alkylene oxide with water in the presence of a metalate-containing solid wherein the metalate is in association with electropositive complexing sites on a solid support such as an anion exchange resin.

Process for the production of alkylene glycols with metalate-containing

Novel vicinal dioxyalkylene organometalates comprising a cation having a hydrocarbyl-containing substituent are disclosed. The vicinal dioxyalkylene organometalates can be reacted with water to yield alkylene glycols.

Organosalts of metalate anions and process for the production of

The process for the liquid-phase hydration of a vicinal alkylene oxide(s) to the corresponding alkylene glycol(s) comprising carrying out such hydration in an aqueous medium containing a water miscible alkylene glycol ether co-solvent.

Process for the production of alkylene glycols

An improved process for the hydrolysis of alkylene oxide to produce alkylene glycol which comprises:

Alkylene oxides are hydrolyzed in a reaction menstruum containing an aqueous phase, a water-immiscible liquid phase, and a selectivity-enhancing, dissociatable metalate anion-containing material. The concentration of the metalate anion-containing material is greater in the water-immiscible liquid phase than that in the aqueous phase. The water-immiscible liquid phase can be separated from the aqueous phase to recover metalate anion-containing material.

Preparation of monoalkylene glycols using two liquid phase reaction

A continuous process for making alkylene glycols by the hydrolysis of alkylene oxides in the presence of selectivity-enhancing organometalate wherein the alkylene glycol-containing hydrolysis product contains organometalate comprises recovering organometalate by extraction with a water-immiscible solvent, separating the resulting organometalate-containing solvent into an organometalate-lean stream for reuse in the extraction and an organometalate-rich stream for reuse in the hydrolysis.

Continuous process for the production of alkylene glycol in the presence

High selectivity to monoalkylene glycol is obtained by contacting in an associated moiety-forming zone alkylene oxide and a selectivity enhancing, dissociatable metalate anion under conditions sufficient to associate at least a portion of the alkylene oxide with metalate anion, and then contacting the associated moiety with water in a glycol-forming zone to form alkylene glycol. The alkylene glycol can be separated from metalate anion. Desirably, the metalate anion can be recycled to the associated moiety-forming zone.

Preparation of monoalkylene glycols in two stages

The process for the liquid-phase hydration of a vicinal alkylene oxide(s) to the corresponding alkylene glycol(s) comprising carrying out such hydration in the presence of a vanadate salt wherein the pH of the liquid phase is between about 5 and 12.

Compositions containing an amine acrylate and another radiation curable composition. The amine acrylates are produced by the reaction of a diacrylate ester and an organic amine. The compositions are rapidly cured by electron beam radiation as well as other types of radiation as well as by light curing means; they are useful in the field of protective coatings.

Amine acrylate addition reaction product compositions

Amine acrylates are produced by the reaction of a diacrylate ester and an organic amine. The amine acrylates are rapidly cured by electron beam radiation as well as other types of radiation as well as by light curing means. These compounds and coating compositions containing them are highly useful in the field of protective coatings. Illustratively, the diacrylate ester of diethylene glycol is reacted with piperazine to produce piperazine diacrylate.

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Charleston, WV, United States of America

John H Robson