Union Carbide Chemicals & Plastics Technology Corporation

Union Carbide Corporation

Charles Arnold Smith

Stephen W King

Albert Ferris Joseph

Cheryl Marie Wizda

Denise Christine Galante

Richard Charles Hoy

Robert J Knopf

Louis F Theiling, Jr

James H McCain, Jr

Fedor Poppelsdorf

Charles F Hauser

A nonionic surfactant having cyclic 1,3-dioxane and/or 1,3-dioxolane functionality which is irreversibly splittable by lowering the pH of its aqueous solution is useful in various processes requiring the removal of emulsified hydrophobic contaminants or other hydrophobic materials from an aqueous stream. After splitting of the surfactant into its component aldehyde and polyol, the hydrophobic components phase-separate and can be removed from the aqueous stream by routine means.

Method for treating contaminated surface with aldehyde-based surfactant

Methods of cleaning fabrics with splittable aldehyde-based surfactants

Aldehyde-based surfactant and method for treating industrial commercial

A nonionic surfactant having cyclic 1,3-dioxane and/or 1,3-dioxolane functionality which is irreversibly splittable by lowering the pH of its aqueous solution is useful in various processes requiring the removal of emulsified hydrophobic contaminants or other hydrophobic materials from an aqueous stream. After splitting of the surfactant into its component ketone and polyol, the hydrophobic components phase-separate and can be removed from the aqueous stream by routine means.

Ketone-based surfactant and method for treating industrial, commercial,

Aldehyde-based surfactant and method for treating industrial,

Ketone-based surfactant and method for treating industrial, commerical,

This invention relates to modified bimetallic or polymetallic (other than Groups IA, IIA and IIB metals) catalysts and the use thereof in the preparation of alkoxylation products, i.e., condensation reaction products of alkylene oxides and organic compounds having at least one active hydrogen. In another aspect of this invention, processes are provided for preparing the modified bimetallic or polymetallic catalysts for alkoxylation using a divalent or polyvalent metal or a divalent or polyvalent metal-containing compound as sources for the catalytically-active metal. In a further aspect of this invention, processes are provided for preparing alkoxylation products that have beneficial, narrow molecular weight ranges using the modified bimetallic or polymetallic catalysts.

Alkoxylation catalysis

An improved calcined hydrogenation catalyst shape which is useful for the catalysis of hydrogenation reactions in a tubular reactor is provided. The catalyst shape has an annular configuration with an open center core, and wherein the shape contains, as a reinforcing matrix distributed therein, up to about 50 percent by weight of milled glass fibers having specific dimensions and wherein the crush strength of the shape is vastly improved with little change in catalytic activity over the non-reinforced shape of comparable size. Additionally, when the shapes of the present invention are employed pressure-drop and diffusion problems are reduced. The catalyst shapes are particularly useful for the hydrogenation of alkyl oxalates to ethylene glycol whereby the reaction can be conducted at lower temperatures and hence by-product formation is minimized.

Hydrogenation of alkyl oxalates

In the production of propiophenone by a vapor-phase, cross-decarboxylation process, an undesirable by-product, isobutyrophenone, is suppressed by addition of water or steam to the reactant stream.

Production of propiophenone

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Charleston, WV, United States of America

Charles Arnold Smith