Abstract: A stabilized acidic aqueous composition comprising hydrogen peroxide, metallic ions, and 3-amino-1,2,4-triazine, said triazine being present in an amount sufficient to improve the stability of said composition against decomposition of said peroxide and the methods of utilizing such composition to treat metallic surfaces and to precipitate hydrated uranium peroxide from a solution containing uranium dissolved therein.

Abstract: An aqueous composition containing hydrogen peroxide, or a precursor which will form said peroxide in aqueous solution, is inhibited from decomposition in the presence of small amounts of copper, iron, manganese or other transition metal ions and in the presence of significant amounts of alkaline earth metal ions, e.g. Ca or Mg, by the presence of a combination of inhibitors one being from the group consisting of alkyleneaminephosphonic acids and the other being from the group consisting of polyalkylenepolycarboxylic acids and their analogous amides and sulfonic acid derivatives.

Abstract: A cyclic process for hydrogen peroxide production comprises a reduction of a quinone compound, followed by an oxidation into hydroperoxide, then finally a water extraction giving an aqueous hydrogen peroxide solution. An aqueous solution containing an organophosphonic acid, such as diethylene triamino pentamethylenephosphonic acid, and optionally associated with nitric acid or a nitrate is introduced during the oxidation and extraction phases to reduce the corrosion during the oxidation and extraction phases and improve the oxidation yield.

Abstract: An aqueous 25% to 35% solution of hydrogen peroxide with a residue on evaporation of 20 mg/l or less are stabilized against decomposition by a maximum of 1.4 mg/l tin. The tin is maintained in the solution in the form of a very fine colloidal sol by the addition of a maximum of 2-5 mg/kg of phosphate added as a phosphonic acid and a maximum of 5.5 mg/kg of a hydroxycarboxylic acid.

Abstract: The present invention relates to aqueous alkaline bleach compositions containing hydrogen peroxide. Under alkaline conditions, it is particularly difficult to prevent the hydrogen peroxide decomposing excessively rapidly during storage, but the addition of an alkaline additive minimizes any change in the pH of washing solutions obtained by dissolution of generally bleach free washing compositions containing anionic surfactants. Hydrogen peroxide-containing aqueous alkaline bleach having acceptable peroxide stability can be obtained by employing ethanol or isopropanol in conjunction with a phosphonate, especially ethylene (diamino tetramethylene phosphonate,) particularly with a polyhydroxy carboxylate, preferably gluconate, or an amino acetate. The liquid bleach can contain a small proportion of a surfactant.

Abstract: A modified alkaline peroxide pre-bond process for the surface treatment of titanium is useful as a practical production process. In this modified process, an exceptionally wide range of allowable peroxide concentration, namely, from 0.001 molar to 0.2 molar (and preferably 0.001 molar to 0.01 molar) may be tolerated and a novel real-time peroxide monitoring and control technique is employed. The process is further improved by means of the use of stabilizers such as precipitated magnesium silicate which greatly increases bath life-time and reduces the overall operating cost of the process. Solution operating conditions have been defined which permit titanium adherends to be processed satisfactorily over a wide range of hydrogen peroxide concentration. In particular, the acceptable temperature range is 125.degree. F.-165.degree. F. (51.7.degree. C.-73.8.degree. C.); the treatment period is 15 to 25 minutes and the hydroxide concentration is 0.3 to 0.9 molar. The preferred values are approximately 145.degree. F.

Abstract: A liquid bleach composition comprises a hydrogen peroxide precursor which includes as an enzyme an alcohol oxidase and as a substrate for the enzyme the corresponding alcohol, the enzyme and the substrate being incapable of substantial interaction in the composition. The composition contains less than 1 unit of catalase for every 2 units of the alcohol oxidase so that peroxide formation, when the composition is diluted with 100 times its volume of water to trigger the interaction of the enzyme and its substrate, it not substantially impaired. The diluted composition has a pH value of from 7.5 to 11. Preferably, the composition also comprises detergent active compound.

Abstract: Highly pure chlorine dioxide is generated very efficiently and safely in a single generator-crystallizer by reducing an alkali metal chlorate with chloride ion in a strong acid in the presence of hydrogen peroxide and a complex catalyst of palladium (II) with chloride ion.

Abstract: A process for producing sodium percarbonate which comprises reacting sodium carbonate with hydrogen peroxide in a working solution of sodium carbonate, hydrogen peroxide and water, said reaction being carried out in the presence of at least one N,N,N',N'-tetra(phosphonomethyl)diaminoalkane of the following formula ##STR1## wherein R is either ##STR2## and n is 0 or 1 to 4, and at least one salt selected from the group consisting of phosphates, silicates and magnesium salts.

Abstract: A process for producing sodium percarbonate which comprises reacting sodium carbonate with hydrogen peroxide in the presence of a stabilizer againsts the decomposition of hydrogen peroxide in a working solution of sodium carbonate, hydrogen peroxide and water, said stabilizer being at least one N,N,N',N'-tetra(phosphonomethyl)diaminoalkane of the following formula ##STR1## wherein R is either ##STR2## and n is 0 or 1 to 4.

Abstract: Stabilizer formulations have been developed for commercial hydrogen peroxide stored in stainless steel containers. These stabilizers, which include benzene phosphonous acid, 2,2'-dithiobenzoic acid, 1-allyl-thiourea, and thiocarbanilide are effective in the presence of typical decomposition catalysts when used in conjunction with typical organic phosphonic stabilizer systems, even when the commercial organic phosphonic stabilizers are present in less than the usually recommended quantities.

Abstract: Coagulated protein food products such as cottage cheese, bakers' cheese, cream cheese and "tofu," i.e., soybean curd, are prepared by adding an aliphatic C.sub.2-6 dione and hydrogen peroxide to bovine milk of varying solids content or to soybean milk, the acid necessary for the acidification and protein coagulation being generated by the oxidation of the dione "in situ." This acidogen system is likewise adaptable to the leavening of various bakery doughs in combination with sodium bicarbonate.

Abstract: Sodium percarbonate can be stabilized by treatment with an aqueous solution of an alkaline earth metal salt to form a thin layer of an alkaline earth metal carbonate on the surface. The resulting sodium percarbonate is improved its respect to the nonhygroscopic property, while maintaining the same solubility in water and effective oxygen content as initially.

Abstract: Effective stabilization of aqueous hydrogen peroxide solutions is achieved by the addition of a stabilizing phosphonate compound of the general formula: ##STR1## wherein n=1-4; and X=H or a water-soluble cation. The stabilizing phosphonate compound is particularly effective for use with alkaline hydrogen peroxide solutions.

Abstract: A bleaching composition which does not cause color change or fading of fabrics, which composition contains 50 to 98 weight % of a peroxide which releases oxygen in an aqueous solution, 1 to 49 weight % of nitrilotriacetic acid or salt thereof and 1 to 49 weight % of a water softener as critical components.

Abstract: Percompound activators comprising .alpha.-acyloxy-N-acylacetamides having the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are hydrogen or hydrocarbon radicals optionally substituted by other groups, used to activate percompounds in oxidizing and bleaching of textile fibers, oils, fats, and waxes, for cosmetic hair and skin treatment, metal surface passivation, purification, disinfection, and sterilization, the activators providing more rapid action at a given temperature and being useful at lower temperatures.

Abstract: An aqueous acidic etch-bleach solution comprising hydrogen peroxide, iron(III)ions and inorganic anions that form a silver salt having a solubility product not greater than 1.times.10.sup.-8 determined in water at 20.degree. C., characterized in that such solution contains in the dissolved state the combination of citric acid and a polymer containing alkylene oxide units for improved stabilization of the hydrogen peroxide.

Abstract: Organic peroxide compositions suitable for free radical polymerization, the compositions comprising a mixture of a shock-sensitive peroxide and a diluent, the diluent being a monomeric material containing olefinic unsaturation which does not readily homopolymerize.

Abstract: The invention relates to a powder bleach composition comprising a plurality of particles wherein substantially each of the particles comprises soda ash and sufficient sodium percarbonate to provide about 1 to 6 weight percent available oxygen content. The bleach composition is made by contacting particulate soda ash, either anhydrous sodium carbonate or sodium carbonate monohydrate, with sufficient of a spray of an aqueous solution of hydrogen peroxide, the contacting being at a temperature from about 35.degree. C. to about 70.degree. C. to provide the aforedescribed bleach composition. The powder bleach composition is recovered from the contacting step once sufficient reaction has occurred to provide sufficient sodium percarbonate so that the bleach composition has from about 1 to about 6 weight percent available oxygen and a remainder which comprises soda ash and minor additives.

Abstract: N-benzoyl 2-methyl-imidazole as an activator for peroxygen compounds for bleaching.

Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and an effective amount of a ketone soluble in the solution.

Abstract: Clean etchings at high rates are obtained using a solution containing sulfuric acid, hydrogen peroxide, a catalytic amount of a selenium compound of a +4 oxidation state and a secondary or tertiary alcohol.

Abstract: A process for the preparation of uniform, stable diacyl peroxide compositions is disclosed. The process comprises reacting the corresponding acyl chloride with hydrogen peroxide in an alkaline aqueous medium in the presence of a desensitizing agent.

Abstract: Phosphorus-containing activators for percompounds, the activators being tris(acetoxymethyl) phosphine oxide and its precursors including tris(acetoxymethyl) phosphine and tetrakis(acetoxymethyl) phosphonium compounds, together with the use of such activators with percompounds for oxidizing or bleaching such as in bleaching fibers, oils, fats, and waxes, cosmetological treatment of hair and skin, metallic surface passivation, and purification, disinfection and sterilization techniques, the use of such activators providing more rapid action at a given temperature or equal activity at a lower temperature.

Abstract: Aqueous hydrogen peroxide solutions used in metal dissolution processes are effectively stabilized against decomposition caused by metal ion contaminants by addition of saccharin or an alkali-metal salt of saccharin to the solutions.

Abstract: Aqueous hydrogen peroxide solutions are stabilized against decomposition due to transition metal impurities by adding at least about 0.001 milliliters of acetonitrile per milliliter of total solution.

Abstract: Hydrogen peroxide in aqueous solution is stabilized against decomposition due to transition metal impurities by a synergistic combination of sulfonic acid type ion exchange resin and acetonitrile.

Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and a catalytic amount of a thiosulfate of sodium or potassium.

Abstract: A stable aqueous peroxy-containing concentrate containing by weight of the concentrate 1 to 60 percent of perglutaric acid; 1 to 50 percent of hydrogen peroxide; 0.01 to 2 percent of a stabilizing agent for the perglutaric acid and hydrogen peroxide; and the remainder to 100 percent water.

Abstract: Novel percompound activators having the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are the same or different and are hydrogen or certain substituted or unsubstituted straight or branched chain alkyl radicals, cycloalkyl radicals, or hydrocarbon radicals containing at least one aromatic ring, or R.sub.5 and/or R.sub.6 are COR.sub.7, where R.sub.7 is hydrogen or certain substituted or unsubstituted straight or branched chain alkyl radicals or hydrocarbon radicals containing at least one aromatic ring, the activators producing more rapid bleaching or oxidation at a given temperature or the same bleaching effect at a lower temperature and being useful for bleaching textile fibers, oils, fats, and waxes; hair and skin treatment; metal surface passivation; or purifying, sterilizing and disinfecting techniques.

Abstract: A bleaching composition comprising 50 to 99.9 wt.% of an inorganic peroxide and 0.01 to 10 wt.% of a compound having the formula: ##STR1## wherein R.sub.1 is hydrogen or alkyl having 1 to 3 carbon atoms, ##STR2## is a radical of a 5 member or 6 member heterocyclic ring system containing only nitrogen and carbon, or nitrogen, oxygen and carbon, atoms in the ring, which can be fused to a benzene ring or another heterocyclic ring to give a polycyclic radical, R.sub.2 is hydrogen or substituted or unsubstituted alkyl having 1 to 10 carbon atoms, substituted or unsubstituted phenyl, pyridyl or pyrrolidone group, R.sub.3 is hydrogen, substituted or unsubstituted alkyl, phenyl, alkoxy, phenoxy, amino, acyloxy, carbamoyl or acyl group or halogen, or R.sub.3 may form together with R.sub.4 a benzo radical, and R.sub.4 is hydrogen or a monovalent group --R.sub.5 Y in which R.sub.

Abstract: The method of activating aqueous solutions of percompounds utilizing N-acylated uracils and benzouracils as activators; solid activated compositions comprising solid percompounds and N-acylated uracils and benzouracils as activators; and novel diacylated uracils and benzouracils.

Abstract: A chemically digestive agent for releasing photoresist films comprising hydrogen peroxide and sulfamic acid is particularly suitable for the production of the fluorescent screen of a black matrix color television image receiving tube in that it has a strong releasing action for various photoresist films and low corrosiveness for machinery and appliances. The addition of a fixed amount of iron ion can further improve the characteristics of the chemically digestive agent.

Abstract: The present invention provides a process for producing diphthaloyl peroxide comprising the steps of reacting particulate phthalic anhydride with aqueous hydrogen peroxide in a mobile slurry or paste and thereafter separating diphthaloyl peroxide from the aqueous phase. Preferably the minimum volume of hydrogen peroxide solution is employed commensurate with obtaining a mobile slurry or paste in a mole ratio of phthalic anhydride to hydrogen peroxide of 4:3 to 1:3. Preferably the reaction is effected at a temperature of from 25.degree. to 50.degree. C.Diphthaloyl peroxide is particularly suitable for washing/bleaching fabrics, optionally in conjection with an inorganic persalt e.g. sodium perborate, at a temperature of from 30.degree. to 60.degree. C.

Abstract: A process for the activation of peroxide-based bleaches comprises conjointly incorporating into an aqueous medium a peroxide-based bleach, sufficient buffering agent to maintain the aqueous medium under alkaline conditions, cyanamide or a metal cyanamide as a peroxide activator, and magnesium, which acts in conjunction with cyanamide or metal cyanamide to further activate the peroxide-based bleach. Stable concentrated liquid or solid peroxide-based bleach compositions containing cyanamide or a metal cyanamide activator and a magnesium compound are also disclosed.

Abstract: A solution for chemically polishing surfaces of copper and its alloys contains acid oxalates at a pH value of 3.0 - 5.0 in combination with hydrogen peroxide and one or more stabilizers and brighteners.

Abstract: A process for the activation of peroxide-based bleaches comprises conjointly incorporating into an aqueous medium a peroxide-based bleach, sufficient buffering agent to maintain the aqueous medium under alkaline conditions and certain metal cyanamides (e.g., calcium cyanamide, disodium cyanamide and sodium acid cyanamide), which have been found to be highly effective peroxide activators when employed under alkaline conditions. Stable concentrated liquid and solid metal cyanamide-activated bleaching compositions are also disclosed.

Abstract: Aqueous hydrogen peroxide solutions containing (1) an organophosphorus compound selected from the group consisting of alkylidene diphosphonic acids, aminotri(methylenephosphonic acid), ethylenediaminetetra(methylenephosphonic acid), and soluble alkali metal salts of the foregoing acids an (2) and organic hydroxy compound selected from allyl alcohol, methallyl alcohol, phenol, o-chlorophenol, o-nitrophenol, o-aminophenol, p-chlorophenol, p-nitrophenol, p-aminophenol, and mixtures thereof are stable during use over a pH range of about 0.5 to 10 against catalytic decomposition by heavy metal ions and by surfaces of insoluble heavy metal sulfides. The stabilizer combinations of this invention are apparently synergistic and give unexpected hydrogen peroxide stability. The stabilized hydrogen peroxide solutions of the invention are especially useful in hydrometallurgical processes and in mineral separations and purifications.

Abstract: A corrosive solution, designed to accelerate the rupture of workpieces of aluminum and its alloys in stress-corrosion-cracking tests, contains sodium chloride, hydrogen peroxide and sodium acetate dissolved in water, with maintenance of an acidic pH.

Abstract: Aqueous hydrogen peroxide solutions are stabilized with the use of phenylphosphonic acids or salts thereof, preferably in combination with known stabilizer additives: stannates, nitrates, and pyrophosphates.

Abstract: A solution for pickling copper and its alloys contains one or more mineral acids, such as sulphuric acid or phosphoric acid, in combination with hydrogen peroxide and a hydroxy acid, such as citric acid or gluconic acid, together with a nitrogen combination of the type substituted triazole and/or a tertiary amine of the general formula ##STR1## in which R is an aliphatic carbon chain containing less than 24 carbon atoms and the sum of n.sub.1 and n.sub.2 is less than 30.

Abstract: Stable peroxy-containing concentrates useful for the production of microbicidal agents consisting essentially of0.5% to 20% by weight of peracetic or perpropionic acid or their precursors,25% to 40% by weight of H.sub.2 O.sub.2,0.25% to 10% by weight of an organic phosphonic acid capable of sequestering bivalent metal cations and their water-soluble acid salts,0 to 5% by weight of anionic surface-active compounds of the sulfonate and sulfate type,Remainder: water.

Abstract: Peroxy-containing concentrates, stable in storage, useful for the production of functional agents consisting essentially of0.5% to 20% by weight of peracetic or perpropionic acid or their precursors,25% to 40% by weight of H.sub.2 O.sub.20 to 5% by weight of anionic surface-active compounds of the sulfonate and sulfate type,Remainder: water.

Abstract: In the surface treatment of copper and its alloys with an acidic aqueous solution of hydrogen peroxide, methylcyclohexanol or cyclohexanol or both of the two are added to the solution thereby inhibiting the hindering action of chlorine ion in removal of metals and oxide scales by dissolution.

Abstract: Aqueous hydrogen peroxide solutions are stabilized with the use of cyanoalkyl ethers of trialkanolamines, such as the condensation product of triethanolamine and acrylonitrile, preferably in combination with known stabilizer additives, i.e., stannates, nitrates, and pyrophosphates.

Abstract: Aqueous hydrogen peroxide solutions are stabilized with the use of phosphorous triamides and phosphoric triamides such as hexamethylphosphorous triamide, hexamethylphosphoric triamide, and bis(dimethylamino)morpholinophosphorus oxide, preferably in combination with known stabilizer additives, i.e., stannates, nitrates, and pyrophosphates.

Abstract: Hydrogen peroxide-containing acidic baths for pickling metals, the bath compositions being stabilized according to the invention so that the baths can be used over long periods of time without appreciable decomposition of hydrogen peroxide, such baths containing from about 10 to 400 g/liter of sulfuric acid, 2 to 80 g/liter of 100% hydrogen peroxide, and 10 to 500 mg/liter of an oxyquinoline derivative stabilizer, the compositions optionally containing a surface active agent, and/or from 0.3 to 2 g/liter of fatty alcohol-ethylene oxide polycondensate stabilizer as well as methods for pickling metals using such baths.

Abstract: Aqueous hydrogen peroxide solutions are stabilized with the use of a 3-N-morpholinylpropionitrile, preferably in combination with known stabilizer additives, i.e., stannates, nitrates, and pyrophosphates.

Abstract: Particulate peroxygen compounds such as sodium percarbonate are coated with a copolymer of vinylidene chloride and another copolymerizable monomer. These coated compounds can be used in detergent mixtures. The coating of peroxygen compound with such films protect the compound from the effect of decomposition by wet air during storage while it permits liberation of the peroxygen compound in an aqueous washing solution.

Abstract: Aroyl-N-hydroxyformimidoyl halides of the formula: ##EQU1## wherein Ar represents a substituted or unsubstituted aryl radical and X is halogen, are bleach activators of high strength and good activity at low temperatures in peroxygen salt bleach compositions and do not change the shade of cotton dyed with various classes of dyes, particularly Vat Blue 6.