DE19522950A1 - Catalyst for decomposing hydrogen peroxide in aq. soln. - Google Patents
Catalyst for decomposing hydrogen peroxide in aq. soln.Info
- Publication number
- DE19522950A1 DE19522950A1 DE1995122950 DE19522950A DE19522950A1 DE 19522950 A1 DE19522950 A1 DE 19522950A1 DE 1995122950 DE1995122950 DE 1995122950 DE 19522950 A DE19522950 A DE 19522950A DE 19522950 A1 DE19522950 A1 DE 19522950A1
- Authority
- DE
- Germany
- Prior art keywords
- catalyst
- hydrogen peroxide
- platinum
- layer
- soln
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/347—Ionic or cathodic spraying; Electric discharge
-
- 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
- A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
- A61L12/08—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using chemical substances
- A61L12/12—Non-macromolecular oxygen-containing compounds, e.g. hydrogen peroxide or ozone
- A61L12/124—Hydrogen peroxide; Peroxy compounds
- A61L12/128—Hydrogen peroxide; Peroxy compounds neutralised with catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
Abstract
Description
Die Erfindung betrifft einen Katalysator zur Zersetzung von H₂O₂ in einer wäß rigen Lösung, der von einem mit Platin beschichteten Formkörper gebildet wird und welcher als Katalysator zur Zersetzung von Restwasserstoffperoxyd in einem wäßrigen Kontaktlinsenpflegemittel eingesetzt wird.The invention relates to a catalyst for the decomposition of H₂O₂ in an aqueous solution, which is formed by a platinum-coated molded body and which as a catalyst for the decomposition of residual hydrogen peroxide in one aqueous contact lens care is used.
Aus der deutschen Patentschrift 24 25 714 ist es bekannt, Kontaktlinsen, insbe sondere Weichkontaktlinsen, mittels Wasserstoffperoxyd in einer wäßrigen, insbe sondere 3%igen wäßrigen Wasserstoffperoxydlösung zu sterilisieren. Zur Beseiti gung von Resten des Wasserstoffperoxyds werden diese mit Hilfe eines Zerset zungskatalysators in Wasser und Sauerstoff zersetzt. Diese Zersetzung kann auch in dem Behandlungsbad zur Sterilisier- und Desinfektionsbehandlung der Kon taktlinse durchgeführt werden.From the German patent specification 24 25 714 it is known to contact lenses, in particular special soft contact lenses, using hydrogen peroxide in an aqueous, esp to sterilize special 3% aqueous hydrogen peroxide solution. To beseiti Residues of hydrogen peroxide are removed using a decomposer tion catalyst decomposed in water and oxygen. This decomposition can also in the treatment bath for sterilizing and disinfecting the con tactical lens.
Der Katalysator besitzt ein katalytisch inaktives Trägermaterial, auf welchem eine katalytisch aktive Schicht aufgebracht ist. Diese Schicht ist beim bekannten Kata lysator aus elektrolytisch abgelagertem Platinschwarz gebildet.The catalyst has a catalytically inactive support material on which one catalytically active layer is applied. This layer is in the well-known kata analyzer made of electrolytically deposited platinum black.
Aufgabe der Erfindung ist es, einen Katalysator der eingangs genannten Art zu schaffen, der im Hinblick auf die Kontaktlinsenpflege eine verbesserte katalyti sche Wirkung aufweist.The object of the invention is to provide a catalyst of the type mentioned create an improved catalyti in terms of contact lens care effect.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Platinschicht durch Sputtern (Sputtering) auf dem Formkörper gebildet ist.This object is achieved in that the platinum layer by Sputtering (sputtering) is formed on the molded body.
Diese Schicht wird dadurch gewonnen, daß ein Platintarget mit energiereichen Ionen eines inerten Stoffes, beispielsweise Argon, Neon und dergl. beschossen wird, so daß Platin in reiner Form sich als Platinschicht auf dem Formkörper abscheidet. Der Formkörper kann aus Kunststoff oder aus einem anderen geeig neten Trägermaterial, wie Keramik und dergl. bestehen. Die durch Sputtern ab geschiedene Platinschicht besitzt auf dem Formkörper eine hohe Haftfestigkeit und kann in gleichbleibender Dicke als dünner Film gebildet werden. Die gleich bleibende dünne Schicht mit hoher Reinheit läßt sich in ihrer Dicke reproduzier bar durch entsprechende Verfahrensführung beim Sputtering gesteuert aufbringen. Vor allem läßt sich die Platinschicht in der Weise bemessen, daß beim Einsatz des Katalysators im wäßrigen, insbesondere 3%igem Wasserstoffperoxydpflege system eingesetzt werden kann. Die Schicht läßt sich so gestalten, daß eine aus reichende Sterilisierwirkung durch das Wasserstoffperoxyd auf die zu behan delnden Kontaktlinsen, insbesondere Weichkontaktlinsen, erreicht wird bei anschließender Zersetzung noch vorhandenen Restwasserstoffperoxyds in der Behandlungslösung.This layer is obtained by using a platinum target with high energy Bombarded ions of an inert substance such as argon, neon and the like is so that platinum in pure form as a platinum layer on the molded body separates. The molded body can be made of plastic or of another suitable Neten carrier material such as ceramic and the like. The sputtering off The separated platinum layer has a high adhesive strength on the molded body and can be formed in a constant thickness as a thin film. The same permanent thin layer with high purity can be reproduced in its thickness Apply bar controlled by appropriate sputtering procedures. Above all, the platinum layer can be dimensioned in such a way that when in use of the catalyst in aqueous, in particular 3% hydrogen peroxide maintenance system can be used. The layer can be designed so that one out sufficient sterilizing effect due to the hydrogen peroxide to be treated delenden contact lenses, especially soft contact lenses, is achieved at subsequent decomposition of residual hydrogen peroxide still present in the Treatment solution.
Zur Verbesserung der Haftfestigkeit der Platinschicht auf dem Formkörper kann die Platinschicht auf eine TiOxNy-Unterlage auf dem Formkörper aufgebracht sein. Der Formkörper kann auch eine rauhe Oberfläche aufweisen, wobei die Platinschicht, welche in Form eines dünnen Filmes aufgebracht ist, diese Oberflä chenrauhigkeit nachbildet, so daß bei geringem Volumen des Formkörpers eine ausreichend katalytisch aktive Oberfläche erreicht wird. Eine bevorzugte Schicht dicke für die Platinschicht liegt im Bereich von 0,1 bis 1 g/m².To improve the adhesive strength of the platinum layer on the molded body can the platinum layer is applied to a TiOxNy base on the molded body be. The molded body can also have a rough surface, the Platinum layer, which is applied in the form of a thin film, this surface reproduces surface roughness, so that with a small volume of the molded body sufficient catalytically active surface is achieved. A preferred layer thickness for the platinum layer is in the range of 0.1 to 1 g / m².
Der Katalysator kann bevorzugt Bestandteil eines Kontaktlinsenpflegesystems sein, bei welchem die Kontaktlinse in einem Behälter eingebracht wird und in diesem Behälter mit Hilfe wäßriger Pflegemittellösung mit 3% Wasserstoff peroxydgehalt die Pflege und Sterilisierung der Kontaktlinse durchgeführt wird. Die Platinschicht ist in der Weise eingestellt, daß eine ausreichende Ein wirkungszeit des Wasserstoffperoxyds zur Desinfektion der zu behandelnden Kontaktlinsen im Behälter erreicht wird und daß anschließend an die Desinfek tionsbehandlung restliches Wasserstoffperoxyd wirkungsvoll in Bestandteile Wasser und Sauerstoff zersetzt wird.The catalyst can preferably be part of a contact lens care system be in which the contact lens is placed in a container and in this container with the help of an aqueous care solution with 3% hydrogen peroxide content the care and sterilization of the contact lens is carried out. The platinum layer is adjusted in such a way that a sufficient on time of action of the hydrogen peroxide for disinfection of those to be treated Contact lenses in the container is reached and that subsequently to the disinfect treatment residual hydrogen peroxide effectively in components Water and oxygen is decomposed.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995122950 DE19522950A1 (en) | 1995-06-23 | 1995-06-23 | Catalyst for decomposing hydrogen peroxide in aq. soln. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995122950 DE19522950A1 (en) | 1995-06-23 | 1995-06-23 | Catalyst for decomposing hydrogen peroxide in aq. soln. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19522950A1 true DE19522950A1 (en) | 1997-01-02 |
Family
ID=7765148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995122950 Withdrawn DE19522950A1 (en) | 1995-06-23 | 1995-06-23 | Catalyst for decomposing hydrogen peroxide in aq. soln. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19522950A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0786258A1 (en) | 1996-01-17 | 1997-07-30 | Wolfgang G.K. Dr. Müller-Lierheim | Method and system of treating contact lenses |
WO1997048423A1 (en) * | 1996-06-17 | 1997-12-24 | Mdle Medical Device Laboratories Europe Gmbh | Device for catalytically dissolving hydrogen peroxide |
US10259710B2 (en) * | 2016-07-13 | 2019-04-16 | Heraeus Deutschland GmbH & Co. KG | Process for spontaneous catalytic decomposition of hydrogen peroxide |
CN116212859A (en) * | 2023-03-13 | 2023-06-06 | 珠海溪谷医疗科技有限公司 | Platinum alloy neutralization ring for hydrogen peroxide solution and preparation method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1567399A1 (en) * | 1964-11-27 | 1970-08-13 | Centre National De La Recherche Scientifique, Paris | Process for the production of solid solutions of nitrides and oxynitrides of certain transition metals |
US3912451A (en) * | 1973-06-04 | 1975-10-14 | Warner Lambert Co | Method for removing hydrogen peroxide from soft contact lenses |
US4536482A (en) * | 1983-03-14 | 1985-08-20 | E. I. Du Pont De Nemours And Company | Catalyst composition |
DE4121418A1 (en) * | 1991-06-28 | 1993-01-14 | Grs Ges Reaktorsicherheit | Forming catalytic metal layers on support for removing hydrogen from gas streams |
US5275784A (en) * | 1991-01-15 | 1994-01-04 | Ciba Vision Corporation | Method for the sterilization of contact lenses |
-
1995
- 1995-06-23 DE DE1995122950 patent/DE19522950A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1567399A1 (en) * | 1964-11-27 | 1970-08-13 | Centre National De La Recherche Scientifique, Paris | Process for the production of solid solutions of nitrides and oxynitrides of certain transition metals |
US3912451A (en) * | 1973-06-04 | 1975-10-14 | Warner Lambert Co | Method for removing hydrogen peroxide from soft contact lenses |
DE2425714B2 (en) * | 1973-06-04 | 1979-07-19 | Warner-Lambert Co., Morris Plains, N.J. (V.St.A.) | |
US4536482A (en) * | 1983-03-14 | 1985-08-20 | E. I. Du Pont De Nemours And Company | Catalyst composition |
US5275784A (en) * | 1991-01-15 | 1994-01-04 | Ciba Vision Corporation | Method for the sterilization of contact lenses |
DE4121418A1 (en) * | 1991-06-28 | 1993-01-14 | Grs Ges Reaktorsicherheit | Forming catalytic metal layers on support for removing hydrogen from gas streams |
Non-Patent Citations (1)
Title |
---|
WILSON,Michael S., MILLIS,Elisabeth A.W.: Contact Lenses in Ophthalmology, Verlag Butterworth & Co., 1988, S.26 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0786258A1 (en) | 1996-01-17 | 1997-07-30 | Wolfgang G.K. Dr. Müller-Lierheim | Method and system of treating contact lenses |
WO1997048423A1 (en) * | 1996-06-17 | 1997-12-24 | Mdle Medical Device Laboratories Europe Gmbh | Device for catalytically dissolving hydrogen peroxide |
US6228333B1 (en) | 1996-06-17 | 2001-05-08 | Mdle Medical Device Laboratories Europe Gmbh | Device for catalytically dissolving hydrogen peroxide |
US10259710B2 (en) * | 2016-07-13 | 2019-04-16 | Heraeus Deutschland GmbH & Co. KG | Process for spontaneous catalytic decomposition of hydrogen peroxide |
CN116212859A (en) * | 2023-03-13 | 2023-06-06 | 珠海溪谷医疗科技有限公司 | Platinum alloy neutralization ring for hydrogen peroxide solution and preparation method thereof |
CN116212859B (en) * | 2023-03-13 | 2023-09-15 | 珠海溪谷医疗科技有限公司 | Platinum alloy neutralization ring for hydrogen peroxide solution and preparation method thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination |