Abstract: A method of producing a composition in powder form involves the following steps (a) to (c): (a) providing highly dispersed silica particles, hydrophobic silica particles, and a cationic surfactant; (b) forming primary hydrophobic silica particles carrying the cationic surfactant on their surface and/or agglomerates of these primary particles; and (c) mixing the highly dispersed silica particles with the product obtained in step (b), thereby obtaining the composition in powder form; and a composition in powder form obtainable by the method.

Abstract: An aqueous disinfectant solution comprising peroxyacetic acid; hydrogen peroxide; and a carbonate buffer is provided.

Abstract: A treatment fluid composition for treating a subterranean formation penetrated by a well bore is formed from an aqueous fluid, a hydratable polymer and an inorganic peroxide breaking agent, which is classified as a stable, non-oxidizer according to UN standards but which retains oxidizing properties as measured by the content of available oxygen. A method of treating a subterranean formation penetrated by a well bore may also be performed by forming a treatment fluid from an aqueous hydrated polymer solution. This is combined with a stable, inorganic peroxide breaking agent. The treating fluid is then introduced into the formation. An optional crosslinking agent capable of crosslinking the polymer may also be included.

Abstract: A cleaning compound for cleaning surfaces that includes at least one container, with each container including a peroxide and/or an alkaline reactant therein. The alkaline reactant is selected to raise the pH of the cleaning compound into the alkaline range when the peroxide and the alkaline reactant are mixed together. The cleaning compound may be a liquid or dry compound, which is applied to the surface to be cleaned.

Abstract: A preparation, comprising a mixture of dibenzoyl peroxides where the mixture of dibenzoyl peroxides contains 50 to 99.7 mole % of a symmetric dibenzoyl peroxide and 0.3 to 50 mole % asymmetric dibenzoyl peroxides, shows a reduced decomposition temperature of the peroxides compared to the symmetric dibenzoyl peroxide and is suitable for hot cross-linking silicone rubber. The preparation can be produced by reacting a mixture containing a first benzoyl chloride and a second benzoyl chloride that is different therefrom with hydrogen peroxide, wherein the mixture of benzoyl chlorides contains 70 to 99.7 mole % of the first benzoyl chloride and 0.3 to 30 mole % of the second benzoyl chloride.

Abstract: Peroxycarboxylic acid compositions having reduced hydrogen peroxide content are generated according to the invention, having enhanced antimicrobial efficacy. Simultaneously, a stable hydrogen peroxide and active oxygen coordinating compound complex is generated and has utility as a recycled bleaching component. In particular, methods of using an active oxygen coordinating compound to selectively and non-destructively remove hydrogen peroxide are provided. Preferred active oxygen coordinating compounds suitable for use with the peroxycarboxylic acid compositions include nitrogen-containing compounds, preferably urea, urea copolymers and/or derivatives, PVP, PVP copolymers and/or derivatives, and/or inorganic carbonates.

Abstract: Peroxycarboxylic acid compositions having reduced hydrogen peroxide content are generated according to the invention, having enhanced antimicrobial efficacy. Simultaneously, a stable hydrogen peroxide and active oxygen coordinating compound complex is generated and has utility as a recycled bleaching component. In particular, methods of using an active oxygen coordinating compound to selectively and non-destructively remove hydrogen peroxide are provided. Preferred active oxygen coordinating compounds suitable for use with the peroxycarboxylic acid compositions include nitrogen-containing compounds, preferably urea, urea copolymers and/or derivatives, PVP, PVP copolymers and/or derivatives, and/or inorganic carbonates.

Abstract: Methods have been developed for incorporation of peracid compounds and related compositions into a non-aqueous medium. The peracid incorporated into the non-aqueous medium is stable and keeps its chemical and antimicrobial activity for extended durations. The non-aqueous medium may be removed just prior to or during application of the peracid.

Abstract: The present invention provides systems and methods for in-situ remediation of soil and groundwater having contaminants such as but not limited to organic compounds perhaps providing adsorption, chemical oxidation, and even biodegradation of contaminants with novel treatments such as but not limited to mixtures of granular activated carbon, calcium peroxide, sodium persulfate, and nitrate perhaps in various concentrations.

Abstract: The present invention relates to medium chain peroxycarboxylic acid compositions of neutral or alkaline pH, to methods of making these compositions, and to methods employing these compositions. The methods include methods of cleaning. The compositions include cleaning compositions.

Abstract: The present disclosure provides methods for generating percarboxylic acid compositions and/or peroxycarboxylic acid compositions formed external to a point of use in non-equilibrium reactions for use in certain bleaching and antimicrobial applications, in particular laundry applications. The compositions are generated external to a point of use, at alkaline pH levels, viz. greater than about pH 12, and optionally suitable for use with detergents and/or surfactants for synergistic bleaching efficacy. Methods of bleaching and/or disinfecting are further provided.

Abstract: The present invention relates to novel sulfoperoxycarboxylic acid compounds, and methods for making and using them. The sulfoperoxycarboxylic compounds of the invention are storage stable, water soluble and have low to no odor. Further, the compounds of the present invention can be formed from non-petroleum based renewable materials. The compounds of the present invention can be used as antimicrobials, and bleaching agents. The compounds of the present invention are also suitable for use as coupling agents.

Abstract: The present invention relates to medium chain peroxycarboxylic acid compositions of neutral or alkaline pH, to methods of making these compositions, and to methods employing these compositions. The methods include methods of cleaning. The compositions include cleaning compositions.

Abstract: The present invention relates to an aqueous dispersion polymerization process for preparing a (co)polymer wherein an organic peroxide is used as initiator (as a source of free radicals) during the polymerization process in conjunction with an effective amount of an organic peroxide stabilizing additive (controlling agent). The invention also relates to formulations comprising an organic peroxide and an effective amount of an organic peroxide stabilizing additive suitable for use in said polymerization process. The invention finally relates to 10 (co)polymers obtainable by the dispersion polymerization process.

Abstract: The present invention relates to a cyclic ketone peroxide formulation comprising one or more crystallizing cyclic ketone peroxides, one or more co-crystallizing compounds which solidify in said cyclic ketone peroxide formulation at a temperature above the crystallization temperature of the crystallizing cyclic ketone peroxide, and, optionally, one or more conventional phlegmatizers (diluents). These formulations show improved safety and storage stability compared to conventional cyclic ketone peroxide formulations. The invention also pertains to the use of these formulations in (co)polymerization and (co)polymer modification processes.

Abstract: A sterilizing composition for a food-packing material which comprises the following components (1) and (2): (1) an aqueous solution containing peracetic acid, hydrogen peroxide and acetic acid, and (2) a peracetic acid sterilizing power-improving agent comprising one or two or more compounds selected from the group consisting of esters obtained from a C2-C8 aliphatic acid and a C2-C8 aliphatic alcohol, C2-C8 aliphatic alcohols and aliphatic alcohols having a benzene ring.

Abstract: Safety stabilized solid, free-flowing compositions based on t-butyl peroxy maleic acid as well as processes for their preparation and use are disclosed.

Abstract: A sterilizing composition for a food-packing material which comprises the following components (1) and (2):

Abstract: The present invention provides supported peroxides, and a method of forming supported peroxides. Supported peroxides according to the invention are solid particles that include an organic peroxide and a metallic soap. In accordance with the method of the invention, supported peroxides are preferably formed by dispersing a mixture that includes at least one peroxide and at least one C4 to C30 carboxylic acid into an aqueous solution that includes a compound that is capable of reacting with the C4 to C30 carboxylic acid to form a water soluble soap. Dispersing the mixture into the aqueous solution results in the formation of an emulsion. A polyvalent metal compound that is capable of reacting with the water soluble soap to form a water insoluble metallic soap is then added to the emulsion, which converts the water soluble soap into a water insoluble metallic soap that precipitates from the solution. The organic peroxide is entrained within the precipitate.

Abstract: A method of forming bricks, tiles, and the like by treating clay, shale or other clay ceramic raw materials containing pyrite is disclosed. Such clay ceramic raw materials may be ground, and then mixed with an oxidizer in a pre-oxidation step to disperse the oxidizer within the clay to expose the maximum amount of clay surface to the oxidizer. One oxidizer that may be used is an aqueous solution of hydrogen peroxide. Clay is shaped into clay products and then heated to elevated temperatures. Pyrite within the clay is oxidized, thereby removing sulfur-containing compounds such as sulfur dioxide from the clay. The application of the invention may assist in preventing efflorescense by ensuring complete or nearly complete removal of pyrite from products oxidation treatment and subsequent firing at elevated temperatures. Similarly, by enhancing the oxidation of pyrite, faster firing cycles may be possible which facilitates reduced fuel consumption and faster process time.

Abstract: A peroxyacid antimicrobial concentrate and use composition is provided comprising a C1 to C4 peroxycarboxylic acid or a C1 to C4 peroxycarboxylic acid combined with a C6 to C18 peroxyacid in beverage processing. The combination of these materials produces a synergistic effect, providing a much more potent biocide than can be obtained by using these components separately. Other components can be added to the composition such as hydrotrope coupling agents, stabilizers, etc. An effective antimicrobial use solution is formed at low concentrations when the concentrate composition is diluted with water to a pH in the range of about 2 to 8. Sanitizing of substantially fixed, “in-place” processing lines in dairies, breweries, and other food and beverage processing operations is one utility of the composition. Another utility is in processes including aseptic cold filling of beverage containers such as cans, glass bottles or two liter PET bottles.

Abstract: Hardness-stabilizing and scale-preventing aqueous percarboxylic acid solutions contain a hardness stabilizer selected from the group (i) polymers prepared by oxidative polymerization of acrolein or of acrolein and acrylic acid, (ii) polyacrylic acid, (iii) copolymers of acrylic acid and another unsaturated carboxylic acid and (iv) polymaleic acid, wherein the average molecular weight Mw of the hardness stabilizer is in the range 500 to 25000, and the solutions are obtained by adding the hardness stabilizer to a percarboxylic acid solution. Preferred solutions contain a hardness stabilizer (i) with a Mw of 1000 to 15000. The solutions may also contain a surfactant. The solution can be used for controlling microorganisms in aqueous systems, in particular water-circulating systems.