EP1628912A2 - Verwendung von pulverf rmigen mischungen, enthaltend wassers toffperoxid und hydrophobiertes siliciumdioxid zur kontrollierten freisetzung von wasserstoffperoxid oder sauerstoff - Google Patents

Verwendung von pulverf rmigen mischungen, enthaltend wassers toffperoxid und hydrophobiertes siliciumdioxid zur kontrollierten freisetzung von wasserstoffperoxid oder sauerstoff

Info

Publication number
EP1628912A2
EP1628912A2 EP04731928A EP04731928A EP1628912A2 EP 1628912 A2 EP1628912 A2 EP 1628912A2 EP 04731928 A EP04731928 A EP 04731928A EP 04731928 A EP04731928 A EP 04731928A EP 1628912 A2 EP1628912 A2 EP 1628912A2
Authority
EP
European Patent Office
Prior art keywords
hydrogen peroxide
silicon dioxide
released
use according
oxygen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04731928A
Other languages
German (de)
English (en)
French (fr)
Inventor
Egon Walzer
Corinna Schmidt
Friedhelm Brandner
Steffen Hasenzahl
Mario Scholz
Birgit Del Grosso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102004002356A external-priority patent/DE102004002356A1/de
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of EP1628912A2 publication Critical patent/EP1628912A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K33/00—Medicinal preparations containing inorganic active ingredients
    • A61K33/40—Peroxides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0216—Solid or semisolid forms
    • A61K8/022—Powders; Compacted Powders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/11—Encapsulated compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/22—Peroxides; Oxygen; Ozone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/25—Silicon; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
    • A61K8/585—Organosilicon compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/08—Preparations for bleaching the hair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/10—Preparations for permanently dyeing the hair
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0203—Preparation of oxygen from inorganic compounds
    • C01B13/0211—Peroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/01—Hydrogen peroxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/14—Peroxyhydrates; Peroxyacids or salts thereof containing silicon
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3942—Inorganic per-compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/41—Particular ingredients further characterized by their size
    • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
    • A61L2300/11—Peroxy compounds, peroxides, e.g. hydrogen peroxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
    • A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
    • A61L2300/602—Type of release, e.g. controlled, sustained, slow

Definitions

  • Hydrogen peroxide and hydrophobicized silicon dioxide for the controlled release of hydrogen peroxide or
  • the invention relates to the use of powdery mixtures containing hydrogen peroxide and hydrophobized silicon dioxide for the controlled release of hydrogen peroxide and / or oxygen.
  • Hydrogen peroxide is produced in the form of aqueous solutions and put on the market. For numerous applications it is advantageous to use a fixed storage form of hydrogen peroxide instead of the aqueous solutions.
  • Commercial solid storage forms for hydrogen peroxide are sodium carbonate perhydrate, sodium perborate and the adduct of urea with hydrogen peroxide.
  • these forms of storage have the disadvantage that, together with hydrogen peroxide, other water-soluble constituents are introduced, which are undesirable in many applications because, for example, they lead to changes in the pH value in aqueous solutions and increase the salt content or the content of organic substances can.
  • Powdery products are known from German published patent application DE 20 137 63 which contain hydrogen peroxide and at least 9% by weight of a finely divided hydrophobicized silica which do not have the disadvantage mentioned above.
  • DE 20 137 63 uses bleaching, in particular products containing oils, fats and cellulose, as well as the addition of these products
  • the invention thus relates to the use of powdered mixtures containing hydrogen peroxide and hydrophobized silicon dioxide for the controlled release of hydrogen peroxide and / or oxygen.
  • Powdery mixtures are preferably used in which hydrogen peroxide is present in the form of drops of an aqueous solution of hydrogen peroxide, which are enveloped by hydrophobized silicon dioxide.
  • Such powdery mixtures can be prepared in a simple manner by intensively mixing an aqueous hydrogen peroxide solution with the hydrophobized silicon dioxide.
  • Hydrophobicized silicon dioxide has non-polar organic residues on the surface and is therefore not wetted by pure water.
  • a pyrogenically prepared, hydrophobized silicon dioxide with a methanol wettability of at least 40 is preferably used as the hydrophobicized silicon dioxide.
  • the methanol wettability is a measure of the hydrophobicity of the silicon dioxide and is determined as the methanol content in percent by volume of a methanol-water mixture at which 50% of the hydrophobized silicon dioxide introduced into the methanol-water mixture sediment. If the methanol content is lower, there is no wetting and the hydrophobicized silicon dioxide largely floats. With a higher methanol content, extensive wetting occurs and most of the silicon dioxide sediments.
  • hydrophobized silicon dioxide with a wettability by methanol of at least 40 results in particularly storable powdery mixtures which are present as free-flowing powders even when the content of hydrophobicized silicon dioxide is less than 9% by weight.
  • Powdery mixtures are preferably used which contain hydrogen peroxide in the form of an aqueous solution with a content in the range from 5 to 70% by weight of hydrogen peroxide and particularly preferably in the range from 10 to 50% by weight of hydrogen peroxide.
  • Hydrogen peroxide solution preferably contains one or more stabilizers which stabilize the solution against decomposition to water and oxygen.
  • stabilizers are, for example, stannates, phosphates, pyrophosphates, polyphosphates, organic phosphonic acids and aminophosphonic acids and also their salts, nitrates and magnesium salts. The choice of type and amount of stabilizers can be used to determine whether predominantly when using the powdery mixtures Hydrogen peroxide is released or whether predominantly oxygen is released.
  • the powdery mixtures containing hydrogen peroxide and hydrophobized silicon dioxide are used for the time-delayed release of hydrogen peroxide.
  • the powdery mixtures are preferably exposed to only slight pressure and shear forces.
  • oxygen can also be released with a time delay.
  • hydrogen peroxide and oxygen can also be released with a time delay.
  • the powdery mixtures are preferably used for the time-delayed release of hydrogen peroxide in an aqueous medium.
  • the powdery mixtures are brought into contact with the aqueous medium and, if appropriate, dispersed therein, the dispersing preferably being carried out with low shear forces.
  • the powdery mixture is brought into contact with the aqueous medium in a container which is permeable to water and hydrogen peroxide and impermeable to the hydrophobized silicon dioxide.
  • the containers used for this purpose preferably consist wholly or partly of a filter medium whose pore size is smaller than the average particle size of the particles of hydrophobized silicon dioxide used to produce the powdery mixture.
  • the container containing the powdery mixture is immersed in the aqueous medium, so that the transport of hydrogen peroxide from the container into the medium takes place predominantly by diffusion.
  • the container is flowed through by the aqueous medium.
  • the containers can be one have any shape and, for example, the shape of a filter bag, a filter cartridge or a cartridge.
  • the powdery mixtures containing hydrogen peroxide and hydrophobized silicon dioxide are used in order to release hydrogen peroxide by the action of pressure.
  • the pressure can be applied mechanically, for example by a plunger, hydraulically by liquid pressure or pneumatically by gas pressure.
  • Hydraulic pressure is preferably used to release hydrogen peroxide into an aqueous medium.
  • the powdery mixture is preferably used in a container which is permeable to water and hydrogen peroxide and impermeable to the hydrophobized silicon dioxide.
  • the container used is preferably flowed through by the aqueous medium, the pressure being exerted by the dynamic pressure of the flowing aqueous medium.
  • hydrogen peroxide can be released into a flowing aqueous medium, the amount of hydrogen peroxide released being adapted to the amount of the flowing medium without the need for measuring or control devices.
  • the powdery mixtures containing hydrogen peroxide and hydrophobized silicon dioxide can moreover also be used to release hydrogen peroxide in a controlled manner in a powdery medium.
  • the mixtures are mixed with the powdery medium, an amount of the mixture containing hydrogen peroxide and silicon dioxide in the range from 0.1 to 10% by weight of the total amount being preferably used.
  • the mixtures containing hydrogen peroxide and hydrophobized silicon dioxide can be used in order to release hydrogen peroxide in the powdery medium with a time delay and thus to maintain a low hydrogen peroxide concentration over a longer period of time.
  • the mixtures containing hydrogen peroxide and hydrophobized silicon dioxide can also be used in addition to in a powdery medium release hydrogen peroxide at a defined point in time.
  • the release of hydrogen peroxide by the action of pressure can be used, for example, to initiate a chemical reaction in the powdery medium, for example to cure the powdery medium.
  • the powdery mixtures containing hydrogen peroxide and hydrophobized silicon dioxide can moreover also be added to emulsions, gels, creams or pastes in order in the preparations thus obtained
  • the powdery mixtures can be used for the delayed release of hydrogen peroxide in order to maintain a low concentration of hydrogen peroxide in the preparation over a longer period of time.
  • the powdery mixtures can also be used to release hydrogen peroxide in the preparation at a defined point in time by the action of pressure or by the action of shear forces.
  • the powdery mixtures can be used for the delayed release of hydrogen peroxide in order to maintain a low concentration of hydrogen peroxide in the preparation over a longer period of time.
  • the powdery mixtures can also be used to release hydrogen peroxide in the preparation at a defined point in time by the action of pressure or by the action of shear forces.
  • Mixtures used in cosmetic preparations to release hydrogen peroxide under pressure when rubbed on the skin can also be used to trigger a chemical reaction in the preparation and thus to change the composition and properties of the preparation.
  • Such preparations can be used, for example, as adhesives which crosslink and harden under the action of pressure.
  • Hydroperoxide can be released over an extended period of time in an amount that inhibits the multiplication of microorganisms and thus preserves the medium into which hydrogen peroxide is released.
  • hydrogen peroxide can be released in a targeted manner at a certain point in time by the action of pressure in an amount effective to kill microorganisms, and a preparation can be given a disinfecting effect in a targeted manner at a certain point in time.
  • the pulverulent mixtures containing hydrogen peroxide and hydrophobized silicon dioxide are used for the production of wound treatment agents which, when used, release a hydrogen growth inhibiting and possibly also disinfecting effect by releasing hydrogen peroxide under pressure.
  • wound treatment agents can be implemented as wound plasters or as creams, ointments or gels for wound treatment.
  • the powdery mixtures containing hydrogen peroxide and hydrophobized silicon dioxide can also be used for the controlled release of oxygen into a gaseous medium.
  • the release of oxygen is preferably delayed, so that a certain oxygen concentration is maintained in the gaseous medium over a longer period of time. Due to the release of oxygen over a longer period of time, a sufficient oxygen concentration can be maintained in the gaseous medium even when oxygen is removed from the gaseous medium, for example by
  • Oxygen concentration can inhibit the growth of anaerobic microorganisms and thus also the formation of volatile metabolic products by such anaerobic
  • the time-delayed release of oxygen from hydrogen peroxide and powdery mixtures containing hydrophobicized silicon dioxide can thus also be used to avoid the formation of an odor, the cause of which is the formation of volatile
  • Metabolic products from anaerobic microorganisms are the use in hygiene products which are worn on the body, in food packaging, in storage containers for rotting waste and in air filters.
  • Example 1 93 g of a 10% by weight hydrogen peroxide solution were mixed with 7 g of Aerosil® R812S in a multimixer (Braun, Model MX32) at the highest level for 45 s. The high shear forces of the mixer break up the liquid into small droplets, which are enclosed by the hydrophobic aerosil. The mixture obtained is a free flowing powder.
  • Hydrogen peroxide and quantities and types of hydrophobic Aerosil performed and also gave free flowing powders.
  • Example 5 4 g of the product obtained in Example 1 were placed in a commercially available tea bag and the tea bag was closed. The tea bag was completely immersed in 1 liter of deionized water in a stirred vessel and the solution was slowly stirred at room temperature. Samples were taken at regular intervals and the hydrogen peroxide content of the solution was determined by cerimetric titration.
  • Example 6 was carried out analogously with the product obtained in Example 2.
  • Example 2 10 g of the product obtained in Example 1 were pressurized with 4 bar compressed air in a pressure filter (pore size 1.2 ⁇ m). The hydrogen peroxide released by the action of pressure was collected in a reservoir. Within 15 minutes, 33% of the hydrogen peroxide obtained in the product was collected in the form of an aqueous solution, and within 30 minutes a total of 50% of the amount used.
  • Example 2 10 g of the product obtained in Example 1 were placed on a glass frit (G2) and a water jet vacuum was applied to the frit. The hydrogen peroxide released in the form of an aqueous solution by atmospheric pressure was collected in a receiver.
  • Example 1 165 g of a commercially available cornstarch were mixed with 1.8 g of the product obtained in Example 1.
  • the so Treated starch was stored in an open vessel at 20 to 23 ° C and a humidity of 50-60% for 13 weeks. No infestation by mold or other microorganisms was discernible during storage.
  • the treated starch had unchanged good flow properties after storage.
  • Example 3 The product obtained in Example 3 was stored at room temperature over a period of 60 days.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Epidemiology (AREA)
  • Birds (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Hematology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Medicinal Chemistry (AREA)
  • Emergency Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dermatology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Medicinal Preparation (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Detergent Compositions (AREA)
EP04731928A 2003-05-23 2004-05-10 Verwendung von pulverf rmigen mischungen, enthaltend wassers toffperoxid und hydrophobiertes siliciumdioxid zur kontrollierten freisetzung von wasserstoffperoxid oder sauerstoff Withdrawn EP1628912A2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10323840 2003-05-23
DE102004002356A DE102004002356A1 (de) 2003-05-23 2004-01-15 Verwendung von pulverförmigen Mischungen, enthaltend Wasserstoffperoxid und hydrophobiertes Siliciumdioxid zur kontrollierten Freisetzung von Wasserstoffperoxid oder Sauerstoff
PCT/EP2004/004954 WO2004103508A2 (de) 2003-05-23 2004-05-10 Verwendung von pulverförmigen mischungen, enthaltend wasserstoffperoxid und hydrophobiertes siliciumdioxid zur kontrollierten freisetzung von wasserstoffperoxid oder sauerstoff

Publications (1)

Publication Number Publication Date
EP1628912A2 true EP1628912A2 (de) 2006-03-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04731928A Withdrawn EP1628912A2 (de) 2003-05-23 2004-05-10 Verwendung von pulverf rmigen mischungen, enthaltend wassers toffperoxid und hydrophobiertes siliciumdioxid zur kontrollierten freisetzung von wasserstoffperoxid oder sauerstoff

Country Status (5)

Country Link
US (1) US20060278847A1 (enrdf_load_stackoverflow)
EP (1) EP1628912A2 (enrdf_load_stackoverflow)
JP (1) JP2007504089A (enrdf_load_stackoverflow)
BR (1) BRPI0410586A (enrdf_load_stackoverflow)
WO (1) WO2004103508A2 (enrdf_load_stackoverflow)

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Publication number Priority date Publication date Assignee Title
EP1646708A2 (en) * 2003-05-23 2006-04-19 Degussa AG Pulverulent mixture comprising hydrogen peroxide and hydrophobized silicon dioxide
WO2005058256A1 (de) * 2003-12-01 2005-06-30 Degussa Ag Verstreichbare kosmetische zubereitung mit hohem wassergehalt
DE102004056862A1 (de) * 2004-11-25 2006-06-14 Degussa Ag Pulverförmige, kosmetische Zubereitung mit hohem Wassergehalt
DE102005055226A1 (de) * 2004-12-24 2006-07-13 Degussa Ag Lagerung pulverförmiger Stoffe mit hohem Wassergehalt
US20090169630A1 (en) * 2006-05-15 2009-07-02 Kevin Ward Methods and Compositions for Controlled and Sustained Production and Delivery of Peroxides and/or Oxygen for Biological and Industrial Applications
CA2682507C (en) * 2007-04-09 2017-11-21 Wake Forest University Health Sciences Oxygen-generating compositions for enhancing cell and tissue survival in vivo
ES2644759T3 (es) * 2008-07-18 2017-11-30 Evonik Degussa Gmbh Dispersión de partículas de dióxido de silicio hidrofobizadas y granulado de la misma
WO2015112468A1 (en) * 2014-01-22 2015-07-30 Revlon Consumer Products Corporation Hydrogen peroxide use in ap/do
US11655437B2 (en) 2017-09-28 2023-05-23 Arkema Inc. Delivery systems for peroxide compounds and their applications
AU2019213007B2 (en) * 2018-01-29 2024-04-04 Pathelen Health Care Ag Hydrophilic/hydrophobic pharmaceutical composition and method of its production and use
CN108793449A (zh) * 2018-06-15 2018-11-13 南京中科水治理股份有限公司 一种用于黑臭河道治理的释氧复合材料的制备与应用

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DE962251C (de) * 1954-06-18 1957-04-18 Degussa Anlagerungsverbindungen von Wasserstoffperoxyd an Siliciumdioxyd und Verfahren zu ihrer Herstellung
US3830738A (en) * 1970-02-16 1974-08-20 Ici Ltd Surface treatment of particulate solids
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WO2004103508A3 (de) 2005-01-06
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JP2007504089A (ja) 2007-03-01
BRPI0410586A (pt) 2006-06-20

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