Patent GB-688621-A (GB)
Title: Improvements in or relating to the production of wetting compositions
IPC: C11D1/12
Filed: 1949-06-24
Abstract: Wetting agents in solid form are prepared by heating tertiary-alkyl sulpho polyethoxyethanol (obtained by reacting ethylene oxide with a tertiary-alkyl mercaptan), a polyoxyethylene ether derivative of alkyl phenol or sodium dioctyl sulpho succinate, or mixtures thereof, to a temperature of about 180 DEG  to 220 DEG  F., intimately mixing therewith 7.5 to 13.5 per cent by weight of stearic acid, lauric acid or coconut fatty acid, adding to the mixture an aqueous solution containing 7 to 30 per cent of sodium hydroxide in quantity sufficient to saponify the fatty acid, agitating the mass to uniformly saponify in situ the fatty acid, cooling to about 150 DEG F., moulding the mass while fluid and cooling to solidify.  The sodium hydroxide may be replaced in part by sodium carbonate, sodium silicate or other soluble-silicate, the silicates serving as hardeners.  Compatible dyes may be added to colour the composition. The product may be used to reduce the surface-tension of water by placing the product in stick or cake-form in a container in the path of a stream of water for incorporation therein at a gradual controlled rate.  In examples: (1) and (2) tertiary-dodecyl sulpho deca-ethoxy ethanol and sodium di-octyl sulpho-succinate are heated together to 220 DEG  F. with stirring, stearic acid or coconut fatty acid is then added, followed by aqueous sodium hydroxide, with or without sodium silicate, and a dye, the mass then being kept stirred until the temperature falls to 150 DEG  F., whereupon it is poured into containers and allowed to solidify; (3) and (4), as in (1), using a tertiary-dodecyl sulpho deca-ethoxyethanol, stearic or coconut fatty acid, sodium hydroxide and a dye; (5) a mixture of the wetting agents specified in (1) is heated to 220 DEG  F., then stearic acid is added, followed by caustic soda, next coconut fatty acid is added and then more caustic soda to saponify and lastly a dye, and the mixture is finished as in (1).  The dodecyl sulpho deca-ethoxy ethanol may be replaced wholly or in part by di-isopropyl phenoxy polyethoxyethanol.  Specification 643,456 is referred to. The Specification as open to inspection under Sect. 91 relates to solid surface-tension reducing compositions comprising a water-agent, a fatty acid and sufficient of an aqueous solution of sodium hydroxide to react in situ with the fatty acid and render the mixture solid.  This subject-matter does not appear in the Specification as accepted.ALSO:Solid soap compositions are prepared by heating tertiary-alkyl sulpho polyethoxyethanol (obtained by reacting ethylene oxide with a tertiary alkyl mercaptan), a polyoxyethylene ether derivative of alkyl phenol or sodium di-octyl sulphosuccinate, or mixtures thereof, to a temperature of about 180 DEG -220 DEG F, intimately mixing therewith 7.5 to 13.5 per cent by weight of stearic acid, lauric acid or coconut fatty acid, adding to the mixture an aqueous solution containing 7 to 30 per cent of sodium hydroxide in quantity sufficient to saponify the fatty acid, agitating the mass to uniformly saponify in situ the fatty acid, cooling to about 150 DEG F, moulding the mass while fluid and cooling to solidify.  The sodium hydroxide may be replaced in part by sodium carbonate or sodium silicate or other soluble silicate, the silicates serving as hardeners.  Compatible dyes may be added.  In examples: (1)-(2) t-dodecyl sulpho deca-ethoxyethanol and sodium dioctyl sulpho-succinate are heated together to 220 DEG F, stearic acid or coconut fatty acid is added, then sodium hydroxide with or without sodium silicate and finally a dye, the mass is stirred until the temperature falls to 150 DEG F whereupon it is poured into containers and solidified; (3)-(4), as in (1) using t-dodecyl sulpho deca-ethoxy ethanol, stearic or coconut fatty acid NaOH and a dye; (5) a mixture of the wetting agents of (1) are heated to 220 DEG F, stearic acid is added and then NaOH to saponify, next coconut fatty acid and more NaOH and finally a dye and the mixture is finished as in (1).  The dodecyl sulpho decaethoxyethanol may be replaced wholly or in part by di-isopropyl phenoxy polyethoxyethanol.  Specification 643,456, is referred to.  The Specification as open to inspection under Sect. 91, relates to a solid soap composition comprising a wetting agent, a fatty acid and sufficient of an aqueous solution of sodium hydroxide to react in situ with the fatty acid and render the mixture solid. This subject-matter does not appear in the Specification as accepted.