Chevron Research Company

Samuel H Sharman

William A Sweeney

Ralph House

Alan E Straus

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.

Foam well cleanout using oligomeric sulfonic acids

Foam well cleanout using oligomeric sulfonates

High sudsing phosphate-free heavy duty detergent composition comprises a compound of the formula ##EQU1## in which R.sub.1 and R.sub.2 are substantially linear saturated or unsaturated aliphatic groups of 3 to 19 carbon atoms, R.sub.3 is alkylene of 2 to 4 carbon atoms, u, v, x and y are 0 or 1, z is an integer 1 to 4, M is H or a water-soluble salt-forming cation, the sum of the carbon atoms in R.sub.1 and R.sub.2 is 13 to 21, the sum of the unsaturated sites in R.sub.1 and R.sub.2 is 0 to 1, the sum of u and v is 1, the sum of x and y is 1, and the sum of u and x is 1, and as a foam enhancing component, from 0.05 to 0.30 parts by weight of an essentially straight chain primary alcohol of 11 to 14 carbon atoms.

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Kensington, CA, United States of America

Samuel H Sharman