Abstract: A composition for ingestion by ruminants to remove protozoa contains a peroxide of a metal of group 2 of the Periodic Table.

Abstract: A process for the preparation of coated seeds, in which the seeds are initially treated with an aqueous phase. The treated seeds are then coated with a coating agent containing a peroxide compound and a hydrophilic polymer, and the coated seeds are dried.

Abstract: The present invention relates to in-situ leaching of uranium, particularly employing an acidic leach liquor containing an oxidant, and especially in respect of ores containing significant amounts of transition metals that act as catalysts for peroxidant decomposition. When hydrogen peroxide is used as oxidant under such conditions it decomposes leading to the formation of gas bubbles and exacerbation of ore-blinding, and a reduction in the efficiency of extraction of uranium.The present invention employs peroxymonosulphuric acid as oxidant and thereby ameliorates the problems aforesaid. Preferably, additionally, sulphuric acid is present in the leach liquor and in many preferred embodiments the peroxymonosulphuric acid concentration is from 0.001 to 0.03 moles/liter and the sulphuric acid from 0.025 to 0.075 moles/liter.

Abstract: Process for reclaiming waste paper without deinking which involves pulping the waste paper in the presence of soft water and then adding to the pulp thus obtained a compound capable of liberating, in aqueous solution, ions with a positive charge equal to or greater than 2.

Abstract: Particles of peroxygenated compounds stabilized with polymers, possessing hydroxyl groups and carboxyl groups, which contain monomeric units of the formula ##STR1## where R.sub.1 and R.sub.2 represent hydrogen or an alkyl group containing from 1 to 3 carbon atoms and where M represents hydrogen, an alkali metal atom or an alkaline earth metal atom M-. The particles can be used in compositions having a bleaching action.

Abstract: Particulate washing and bleaching compositions containing a peroxy compound and an alkali carbonate have their tendency to cake during storage reduced by incorporating within the compositions an alkaline aryl sulphonate, such as sodium methyl naphthalene sulphonate, and a water-insoluble inorganic compound, such as magnesium trisilicate. The compositions can be used for washing and bleaching textiles and fibers and cleaning hard surfaces.

Abstract: Process for the culture of aerobic microorganisms in a culture medium provided with at least one source of oxygen, at least one source of carbon and at least one source of hydrogen, comprises providing oxygen originating from the decomposition of hydrogen peroxide as a source of oxygen and providing at least one highly inflammable product as a source of carbon and hydrogen.

Abstract: Process for stabilizing particles of peroxygenated compounds by coating by means of a solid coating agent comprises applying a coating agent which contains at least one boron compound from metaboric acid, orthoboric acid and tetraboric acid.

Abstract: A composition suitable for disinfecting a water supply consists essentially of an aqueous solution of monochloroamine and hydrogen peroxide. The weight ratio of the hydrogen peroxide to monochloroamine is from 2:1 to 50:1, preferably 4:1 to 20:1.An advantage of employing a combination of monochloroamine and hydrogen peroxide as disinfectant is that a comparatively long lasting residual bactericide is thereby provided.

Abstract: Substituted anthraquinones are obtained by thermal or catalytic dehydrochlorination of the corresponding substituted ortho-benzoylbenzoic acid chloride.They may be used for the production of hydrogen peroxide and the synthesis of dyes.

Abstract: The present invention relates to processes and compositions for the disinfection of aqueous media and particularly bacteria-containing aqueous effluents, e.g. treated municipal sewage or effluents from paper or food-processing industries, employing hydrogen peroxide-containing compositions as an alternative to chlorine. Specifically, the disinfectant comprises a combination of hydrogen peroxide, a soluble copper salt such as copper sulphate and an autoxisable reducing agent such as ascorbic acid or sodium sulphite, which can be employed in dilute concentrations at pH from 6 to 9, preferably 6.5 to 8. Particularly preferred combinations of the components are of mole ratios 1:1 to 60:1 of hydrogen peroxide:copper: and 5:1 to 1:1.2 copper:reducing agent.

Abstract: The present invention relates to a process for the oxidation of sulphur dyes, particularly when they are incorporated in natural or regenerated cellulose textile fibres such as cotton, which employs an alternative oxidant to the ecologically undesirable dichromate now used. The process employs two steps, in the first of which the sulphur dyed textile is contacted with dilute hydrogen peroxide, very conveniently having a pH of 3-5 and at a temperature of from 40-80.degree. C. and in the second step, the textile is then contacted with a dilute solution of activator often ferric sulphate, preferably at pH 3-4 and from 0.1 to 1.0 g/l activator concentration. The process can be effected with relatively minor alteration or addition to existing equipment.

Abstract: In a process according to the present invention pre-reduced lateritic ores containing iron and nickel are leached with an aqueous sulphuric acid leach liquor containing or into which is introduced in the presence of the ore a peroxidant selected from hydrogen peroxide and peroxymonosulphuric acid. By so doing, the liquor is obtained with a lower concentration of iron than if the peroxidant had not been employed.In preferred embodiments the leaching is carried out at from 40.degree. to 70.degree. C. for a period of 1 to 5 hours; when hydrogen peroxide is used, it is preferably introduced continuously or progressively throughout the reaction period and when peroxymonosulphuric acid is used it is preferably introduced initially. The acidity of the liquor can be reduced at the end of the reaction to pH3 to 4 to further lower the content of iron in solution.

Abstract: Solid particles containing calcium peroxide and coated with a coating agent containing a water-insoluble solid compound having a melting point of at least 50.degree. C.The particles can be used in the treatment of water and make it possible to ensure sufficient oxygenation for very long periods.

Abstract: The present invention provides aromatic peroxyacids containing at least three peroxyacid groups, which can be incorporated in detergent or bleaching compositions.The aromatic peroxyacids can be desensitized by intimate contact with a diluent e.g. magnesium sulphate or lauric acid, and coated to reduce destructive interaction with other components of the detergent or bleaching composition. Preferred aromatic peroxyacids include triperoxy trimellitic acid, triperoxy trimesic acid and tetraperoxy pyomellitic acid.The aromatic peroxyacids are especially suitable for washing white fabrics or cleaning hard surfaces, particularly at a temperature of from 30.degree. to 60.degree. C.

Abstract: The invention relates to the production of tungsten having a low impurity content of molybdenum from impure minerals such as scheelite.An aqueous acidic feed solution containing both molybdenum and tungsten, and also containing enough hydrogen peroxide to depolymerize heteropolymers of tungsten and molybdenum and prevent precipitation in the extractant, is contacted with an extractant composition comprising an organic phosphoric acid, a trialkyl phosphate and a tri-alkyl phosphine oxide in an hydrocarbon diluent. By selecting an appropriate combination of pH and hydrogen peroxide content of the feed, contents of the components of the extraction composition and temperature of extraction, selective extraction of molybdenum can be obtained. In some particularly preferred embodiments, the feed pH is in the range of 0.85 to 1.5, the mole ratio of hydrogen peroxide to tungsten and molybdenum is 0.6 to 1.0, the temperature of extraction is in the range 12.degree. to 20.degree. C.

Abstract: A process for disinfecting a water supply, employing as disinfectant a combination of monochloroamine and hydrogen peroxide for use as a disinfectant.The concentration of monochloroamine is preferably at least 0.02 ppm and generally not more than 0.5 ppm. The concentration of hydrogen peroxide is preferably at least 0.1 ppm and often not more than 1 ppm. Preferably the weight ratio of hydrogen peroxide to monochloroamine is in the range of 4:1 to 20:1.An advantage of employing a combination of monochloroamine and hydrogen peroxide as disinfectant is that a comparatively long lasting residual bactericide is thereby provided.

Abstract: In a process according to the present invention uranium is extracted into solution from its ore by leaching with an aqueous solution containing peroxomonosulphuric acid, the peroxoacid oxidizing the uranium through to its hexavalent state. Preferably the leaching is carried out at a temperature in the range of 50.degree. to 100.degree. C. The leach liquor can initially contain additional amounts of sulphuric acid or merely that present by virtue of the method of making the peroxomonosulphuric acid. In a preferred method of operation, the peroxoacid is introduced progressively into the leach liquor during the course of the leaching so as to maintain an electrochemical potential in the range of 450 to 650 mV.By use of the process, uranium is cleanly extracted into solution.

Abstract: The present invention provides aromatic peroxyacids containing at least two peroxyacid groups and a total of at least three peroxyacid or carboxy acid groups, which can be incorporated in detergent or bleaching compositions.The aromatic peroxyacids can be desensitized by intimate contact with a diluent e.g. magnesium sulphate or lauric acid, and coated to reduce destructive interaction with other components of the detergent or bleaching composition. Preferred aromatic peroxyacids include triperoxy trimellitic acid, triperoxy trimesic acid and tetraperoxy pyomellitic acid.The aromatic peroxyacids are especialy suitable for washing white fabrics or cleaning hard surfaces, particularly at a temperature of from 30.degree. to 60.degree. C.

Abstract: Abrasion resistant granules of sodium perborate monohydrate are made by introducing an aqueous solution containing hydrogen peroxide and an aqueous solution containing sodium metaborate simultaneously into a fluidized bed dryer which contains seeds of a size smaller than that of the desired granules. At least one surface active agent is introduced into at least one of the aqueous solutions containing hydrogen peroxide and sodium perborate. Water present in the aqueous solutions is evaporated by fluidization gas which is introduced into the fluidized bed dryer. The process produces, in one stage, granules of sodium perborate monohydrate having a high rate of dissolution, good flowability, abrasion resistance, and other desirable properties.