Patent GB-433305-A (GB)
Title: Improvements in the manufacture and production of wetting, washing and dispersing agents
Filed: 1934-02-08
Abstract: Oxidation products of non-aromatic hydrocarbons of high molecular weight are dissolved in a water-insoluble solvent or mixture of solvents, the solution is treated with an alkaline substance dissolved in water in such amount that the acid portions of the oxidation products are neutralized, the aqueous soap solution is separated and the unsaponifiable constituents may then be extracted from it by means of the same or another water-insoluble solvent.  The soap solution may be evaporated to dryness and formed into shaped soaps, soap powder, or other form of washing, wetting, or dispersing agents.  There may be used oxidation products of paraffin wax, mineral oils including petroleum and middle oils, or oxidation products of substances obtained by destructive hydrogenation of coal or tar.  Benzine, benzene, cyclohexane, cyclohexanol, tetrahydro-naphthalene, carbon tetrachloride, or mixtures of benzine and alcohol may be used as solvent.  The aqueous alkali solution may contain alkali metal hydroxide, alkali metal carbonate, ammonia, methylamine, ethylamine, dimethylamine, ethanolamine, or diethanolamine.  In an example, hard paraffin wax is oxidized with air by heating in the presence of sodium and manganese palmitates. The product is dissolved in a mixture of benzine and alcohol and stirred with warm sodium carbonate solution.  The soap solution is removed after settling, extracted with benzine and evaporated in a roller drier to form a soap powder.  In another example, a mineral oil middle fraction is oxidized with air by heating in the presence of manganese naphthenate and the product dissolved in benzene is stirred with caustic soda solution.  After settling, the soap solution is removed and extracted with benzene.  The solution may be used directly for washing or evaporated by spraying to form a soap powder.  In another example the solvent used is diethyl ether and the alkali is triethanolamine dissolved in water.  Alcohol is added while the mixture is stirred.  The soap solution may be extracted with ether.ALSO:Oxidation products of non-aromatic hydrocarbons of high molecular weight are dissolved in a water-insoluble solvent or mixture of solvents, the solution is treated with an alkaline substance dissolved in water in such amount that the acid portions of the oxidation products are neutralized, the aqueous soap solution is separated and the unsaponifiable constituents may then be extracted from it by means of the same or another water-insoluble solvent.  The soap solution may be evaporated to dryness and formed into shaped soaps, soap powder, or other form of washing, wetting, or dispersing agents.  There may be used oxidation products of paraffin wax, mineral oils including petroleum and middle oils, or oxidation products of substances obtained by destructive hydrogenation of coal or tar.  Benzine, benzene, cyclohexane, cyclohexanol, tetrahydro-naphthalene, carbon tetrachloride, ether, or mixtures of alcohol and benzine may be used as solvent.  The alkali may be alkali metal hydroxide or carbonate, ammonia, methylethyl-, dimethyl-, ethanol-, or diethanol-amine.  In an example, hard paraffin wax is oxidized with air in presence of sodium and manganese palmitates. The product is dissolved in benzine and alcohol and stirred with warm sodium carbonate solution.  The soap solution is removed, extracted with benzine and evaporated in a roller drier to form a soap powder. In another example, a mineral oil middle fraction is oxidized with air in presence of manganese naphthenate and the product is dissolved in benzene and stirred with caustic soda solution.  The soap solution is removed and extracted with benzene.  The solution may be used directly for washing or evaporated by spraying to form soap powder. In another example the solvent used is diethyl ether and the alkali is triethanolamine dissolved in water.  Alcohol is added while the mixture is stirred.  The soap solution may be extracted with ether.