Chevron Research Company

Ralph House

William A Sweeney

Alan E Straus

Samuel H Sharman

Gar L Woo

Certain polyhydric alcohols are thermal stabilization additives for normally solid polypyrrolidone at melt temperatures.

Polyol stabilization additive for polypyrrolidone

Detergent active materials which are effective in the absence of phosphate builders comprise ring polysulfonated alkylphenoxy alkylols of the formula: ##STR1## in which R is linear alkyl of 16 to 22 carbon atoms, R' is alkylene of 1 to 5 carbon atoms, X is H or a water-soluble salt-forming cation, and m is an integer of 1 to 10.

Ring polysulfonated alkylphenoxy alkylols as detergents

The process for preparing substantially anhydrous solid catalyst for the polymerization of 2-pyrrolidone includes the step of contacting equimolar amounts of an alkali metal hydroxide and 2-pyrrolidone.

Polymerization of 2-pyrrolidone with catalyst prepared from the reaction

The dialkylaminobenzaldehydes are thermal stabilization additives for solid polypyrrolidone at melt temperatures.

Dialkylaminobenzaldehyde polypyrrolidone composition

Carboxymethyloxysuccinate derivatives are new compounds whose water-soluble salts are effective sequestering agents (builders), especially in heavy-duty laundering compositions. The salts may be used in combination with anionic, nonionic, ampholytic and zwitterionic detergents. A process for the preparation of the acids and salts is provided.

Carboxymethyloxysuccinates

Carboxydisulfosuccinates useful as detergent builders are novel compounds prepared by addition of CO.sub.2 to disulfosuccinate.

Process of producing carboxydisulfosuccinates

A process for preparing nitroaromatic nitriles which comprises reacting an aromatic carbocyclic nitrile with a mixture of nitric acid and sulfuric acid at a temperature of at least 35.degree.C and an acids-to-nitrile mol ratio of at least 3.5:1 and a nitric acid-to-nitrile mol ratio of at least 1:1.

Process for preparing nitroaromatic nitriles

Carboxydisulfosuccinates

Organic disulfonic acids are produced by heating a sulfonate monomer at a temperature above 110.degree.C. in the substantial absence of water. Olefin sulfonation product mixtures, hydroxyalkane sulfonic acids, alkane sultones, alkene sulfonic acids and mixtures thereof are oligomerized under these conditions.

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El Sobrante, CA, United States of America

Ralph House