Shell Oil Comapny

Harold E De La Mare

Thomas F Brownscombe

Larry S Corley

Ronald S Bauer

Paul D Jones

John W Jenkins

Cure of an epoxy resin by an aliphatic amine is accelerated by a calcium sulfonate or calcium hydrocarbyl sulfate salt. The calcium salt is preferably a salt of a detergent-range sulfonic acid or hydrocarbyl sulfuric acid which is soluble in either the amine or the epoxy resin.

Calcium sulfonate or calcium hydrocarbyl sulfate accelerator for amine

The present invention provides a rapid curing epoxy composition, suitable for RIM processes, which exhibits unexpectedly high modulus and strength and stability which comprises

Curable epoxy compositions suitable for use in RIM processes

The present invention provides a rapid curing epoxy composition suitable for RIM processes which exhibits unexpectedly good physical properties which comprises (1) an epoxy resin, (2) at least one ethylenically unsaturated monomer, (3) a polyamine or polyamide, (4) a catalyst selected from Group I or Group II metal salts, and (5) a polyalkylene ether glycol.

Curable polyepoxide-unsaturated monomer compositions suitable for use in

Partial vinyl-epoxy ester compositions are disclosed which can be cured by a dual path comprising exposure to UV radiation followed by a post thermal treatment. Simply, the partial esters contain from about 1 to 10 parts per hundred parts by weight of ester of a catalyst compound such as tertiary amines and imidazole compounds, salts and adducts thereof.

Curable epoxy-vinyl ester compositions

A curable resin composition is prepared by first reacting a low molecular weight polybutadiene resin with a polycarboxylic acid anhydride of the general formula ##EQU1## and then reacting the resulting resin with a hydroxyalkyl acrylate of the general formula ##EQU2## Also disclosed are the cured resin compositions.

Polybutadiene resin

A process for the regeneration of a catalyst containing a metal of the group consisting of rhodium and ruthenium employed in the hydrogenation of an organic compound possessing at least one carbon-to-carbon bond unsaturation in the presence of a methylene dichloride solvent is taught whereby the catalyst is regenerated after deactivation by contacting the deactivated catalyst first with a hydrogen-containing gas then with an oxygen-containing gas and finally with a hydrogen-containing gas.

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Houston, TX, United States of America

Harold E De La Mare