GB501729A - Improvements in and relating to the production of sulphonic compounds - Google Patents

Abstract

501,729. Sulphonated products. PERLMUTEER, S. Z. Aug. 30, 1937, No. 10376/36. [Classes 2 (iii) and 16(ii)] Products stated to have foaming, emulsifying, softening and detergent properties are obtained by condensing high molecular aliphatic carboxylic acids containing more than 12 carbon atoms or their esters with amino alcohols and esterifying the resulting amides with aromatic di- or poly-sulphonic acids. In a modification, the amides obtained as intermediate products are mixed with hydrocarbon oils before the treatment with aromatic sulphonic acids is effected. Further sulpho groups may be introduced by treating the products with sulphonating agents, advantageously in stages using sulphuric acid of increasing strength with decreasing temperature. The products may be used in the textile, dyeing, leather, fur, paper, cosmetic and pharmaceutical industries. In examples: (1) butanolamine is reacted in the presence of chloral hydrate as catalyst with a mixture of palm oil, stearin and arachis oil and the resulting intermediate product treated with naphthalene polysulphonic acid ; the product is neutralized and may be dried by dispersing its solution in vacuo ; (2) monoethanolamine is reacted with a mixture of arachis oil, soyabean oil, palm, oil and colophony and the product further treated as in example 1; (3) monoethanolamine is reacted with a mixture of olive, coconut and spermaceti oils and the intermediate product treated with a product obtained by sulphonating a mixture of cresol and naphthalene.