WO2000049119A1 - Utilisation de dispersions filmogenes de dioxyde de titane pour le nettoyage et la desinfection des surfaces, dispersions filmogenes de dioxyde de titane - Google Patents
Utilisation de dispersions filmogenes de dioxyde de titane pour le nettoyage et la desinfection des surfaces, dispersions filmogenes de dioxyde de titane Download PDFInfo
- Publication number
- WO2000049119A1 WO2000049119A1 PCT/FR2000/000371 FR0000371W WO0049119A1 WO 2000049119 A1 WO2000049119 A1 WO 2000049119A1 FR 0000371 W FR0000371 W FR 0000371W WO 0049119 A1 WO0049119 A1 WO 0049119A1
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- WO
- WIPO (PCT)
- Prior art keywords
- dispersion
- titanium dioxide
- film
- acrylamide
- water
- 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.)
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Classifications
-
- 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
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/23—Solid substances, e.g. granules, powders, blocks, tablets
- A61L2/232—Solid substances, e.g. granules, powders, blocks, tablets layered or coated
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/148—Light sensitive titanium compound containing
Definitions
- the subject of the present invention is the use of a film-forming dispersion of titanium dioxide nanoparticles for cleaning and / or disinfecting surfaces exposed to light.
- the subject of the invention is also a method of cleaning and / or disinfecting surfaces exposed to light by depositing a film of titanium dioxide nanoparticles on said surfaces, as well as dispersions of titanium dioxide nanoparticles, the filmogenicity of which is improved by the presence of a film-forming polymer.
- titanium dioxide nanoparticles as a bactericidal and photo-oxidizing agent in detergent compositions for washing clothes or surfaces has been described by the Applicant in its French patent application No. 95 00821 of January 25, 1996.
- the Applicant has found that the dispersions of titanium dioxide nanoparticles are film-forming.
- the object of the present invention is to use the photo-oxidative properties of titanium dioxide nanoparticles, as well as their film-forming nature to clean and / or disinfect the surfaces on said surfaces, of a non-permanent film of titanium dioxide capable of generate free radicals disinfecting surfaces and oxidizing dirt.
- a non-permanent film of titanium dioxide capable of generate free radicals disinfecting surfaces and oxidizing dirt.
- the film formed is then gradually removed by the following cleaning steps.
- the target areas of application can be very varied, such as cleaning or disinfecting hard surfaces encountered in the food industry, kitchens, bathrooms, sanitary, hospitals, windows, facades ..., as well as degradation and / or the elimination of heavy hydrocarbons deposited on surfaces, in particular following accidental pollution (for example beaches, rocks, equipment, plants, etc.).
- a first object of the invention consists in the use of a dispersion of titanium dioxide, for cleaning and / or disinfecting surfaces exposed to light, by depositing a film of titanium dioxide on said surfaces, said titanium dioxide being in the form of elementary particles of size less than 100 nm, of preferably less than 70 nm, and with a specific surface greater than 150 rtfVg, preferably greater than 200 m 2 / g, the continuous phase of said dispersion comprising water and / or at least one alcohol with a boiling point less than 120 ° C, preferably less than or equal to 100 ° C, said dispersion having, when it comprises water, a pH different by at least 1 unit, preferably by at least 2 units, from the value of isoelectric point of titanium dioxide in said dispersion.
- the pH of the dispersion comprising water is of course the pH of the continuous phase.
- the titanium dioxide used is very particularly in the form of elementary particles with a size of the order of 20 to 60 nm and a specific surface of the order of 200 to 300 m 2 / g.
- BET surface is understood to mean the specific surface determined by nitrogen adsorption in accordance with standard ASTM D 3663-78 established on the basis of the BRUNAUER - EMMETT - TELLER method described in the periodical "The Journal of the American Society", 60, 309 (1938).
- the size of the elementary particles of titanium dioxide according to the invention is measured by transmission electron microscopy (TEM).
- the nature of the elementary particles of titanium dioxide is preferably the anatase (isoelectric point between 5.5 and 6 for pure anatase). Within said dispersion, said elementary particles can be present both in the form of aggregates and of elementary particles.
- said dispersion may comprise of the order of 0.01 to 15% of its weight, preferably of the order of 0.1 to 10% of its weight of titanium dioxide.
- alcohols which may constitute or be present in the continuous phase, there may be mentioned in particular aliphatic monoalcohols with a boiling point below 100 ° C. such as ethanol, isopropanol, etc.
- the continuous phase consists of a water / alcohol (s) mixture with a boiling point below 120 ° C.
- the ratio between the water and the alcohol (s) may be arbitrary.
- An alcohol with a higher boiling point (in particular a diol such as ethylene glycol) may however be present in the continuous phase, but this may not represent more than 10% of the weight of said phase.
- the continuous phase comprises water, preferably from 50 to 100%, preferably from 70 to 99.9% of its weight of water.
- the pH values favorable to a good implementation of the invention can range from 0 to 14, preferably from 2 to 14 and are function of other additives possibly present in the dispersion and capable of modifying the isoelectric point of titanium dioxide.
- the pH values favorable to a good implementation of the invention are situated below 4 or beyond 8; preferably, the pH of the dispersion can range from 0 to 3 approximately or from 9 to 14 approximately.
- pH regulators may be present; we can mention mineral or organic acids such as hydrochloric, nitric, sulfuric, phosphoric, citric, glutaric, adipic, succinic ..., bases such as ammonia, alkali metal hydroxides, sodium carbonate, triethanolamine ...
- Said dispersion may also contain other additives which are soluble or dispersible in the continuous phase, additives which can promote its stability, its wettability, increase its film-forming character, its biocidal character or provide other additional properties.
- non-ionic surfactants promoting wettability, of the polyoxyethylenated C6-C12 alkylphenols type, polyoxyethylenated and / or polyoxypropylene aliphatic C8-C22 alcohols, block copolymers of ethylene oxide - propylene oxide, optionally polyoxyethylene carboxylic amides. ..,
- anionic or amphoteric surfactants as dispersants, agents of the alkali metal soap type (alkali salts of C8-C24 fatty acids), alkali sulfonates (C8-C13 alkylbenzene sulfonates, C12-C16 alkylsulfonates), fatty alcohols CQ- C-
- biocides or bacteriostats capable of improving the biocidal nature of the dispersions, in particular in the event of insufficient light, such as cationic surfactants (alkyldimethylammonium halides, etc.), biocides, quaternary ammonium or phosphonium halides, amphoteric biocides derivatives of glycines, phenolic biocides, biocides derived from chlorhexidine, hypochlorites, biocides or film-forming polymers, quaternary polyammonium ...
- cationic surfactants alkyldimethylammonium halides, etc.
- biocides quaternary ammonium or phosphonium halides
- amphoteric biocides derivatives of glycines phenolic biocides
- biocides derived from chlorhexidine, hypochlorites biocides or film-forming polymers
- - film-forming anti-fouling agents such as terephthalic polyesters which may be sulfonated ...
- a particular embodiment of the invention consists in improving the film-forming character of the titanium dioxide nanoparticles by the presence within the dispersion of at least one organic polymer or organosiloxane of film-forming character which can furthermore provide one or more properties ( s) additional to said dispersion.
- the amount of polymer that can be present can represent of the order of 0.005 to 15%, preferably of the order of 0.01 to 10% of the weight of said dispersion.
- organic film-forming polymers or organosiloxanes which can be used, there may be mentioned very particularly:
- polyester copolymers based on ethylene terephthalate and / or propylene terephthalate and polyoxyethylene terephthalate units (US-A-3,959,230, US-A-3,893,929, US-A-4,116,896, US-A-4,702,857 , US-A-4,770,666); . sulfonated polyester oligomers obtained by sulfonation of an oligomer derived from ethoxylated allyl alcohol, dimethyl terephthalate and 1,2 propylene diol (US-A-4,968,451)
- polyester copolymers based on propylene terephthalate and polyoxyethylene terephthalate units and terminated by ethyl or methyl units (US-A-4,711,730) or polyester oligomers terminated by alkylpolyethoxy groups (US-A-4,702,857) anionic sulfopolyethoxy (US-A-4,721,580), sulfoaroyl (US-A-4,877,896)
- polyesters-polyurethanes obtained by reaction of a polyester obtained from adipic acid and / or terephthalic acid and / or sulfoisophthalic acid and a diol, on a prepolymer with terminal isocyanate groups obtained from a polyoxyethylene glycol and a diisocyanate (FR-A-2 334 698)
- polyester oligomers obtained by condensation of isophthalic acid, of dimethyl sulfosuccinate and of diethylene glycol (FR-A-2 236 926).
- quaternary ammonium ionenes described in US-A-4, 157,388 (MIRAPOL A-15 or POLYQUATERNIUM-2 from Rhodia)
- polyoxyalkylene film-forming polymers carrying anionic functions such as copolymers of acrylic acid and / or methacrylic acid and polyethylene glycol acrylate and / or methacrylate, the polyoxyethylene unit of which has a mass of the order of 500 to 10,000
- polyalkoxylated polydimethylsiloxanes providing shine and oleophobia such as SILICONE COPOLYOL 10646 from Rhodia - other film-forming polymers derived from ethylenically unsaturated monomers which can be polymerized by the radical route, such as (meth) acrylic acid, (C1) alkyl acrylates- C4, styrene, butadiene ...
- a particularly advantageous embodiment of the invention consists in the use of dispersions of titanium dioxide further comprising a film-forming organic polymer, preferably hydrophilic, capable of interacting with the surface of the particles of titanium dioxide, preferably by electrostatic connection.
- Said dispersions are preferably aqueous and have a pH of the order of 4 to 9.
- films-forming organic polymer can contain of the order of 0.005 to 10%, preferably 0.01 to 5%, very particularly 0.01 to 2% by weight of film-forming organic polymer.
- film-forming polymers there may be mentioned:
- polyoxyalkylene film-forming polymers carrying anionic functions such as copolymers of acrylic acid and / or methacrylic acid and polyethylene glycol acrylate and / or methacrylate, the polyoxyethylene unit of which has a mass of the order of 500 to 10,000
- cationic film-forming homopolymers or copolymers derived from cationic ethylenically unsaturated monomers mention may be made of those derived from at least one of the following cationic monomers
- aminoacryloyl or acryloyloxy monomers such as trimethylaminopropylmethacrylate chloride, trimethylaminoethylacrylamide or methacrylamide chloride or bromide, trimethylaminobutylacrylamide or methacrylamide methyl chloride, trimethylaminopropylmethacrylamethylmethylacrymethylchloride ), (3-acrylamidopropyl) trimethylammonium chloride (APTAC), methacryloyloxyethyl trimethylammonium chloride or methyl sulfate, acryloyloxyethyl trimethylammonium chloride; * * 1-ethyl 2-vinylpyridinium bromide, chloride or methyl sulfate;
- N, N-dialkyldiallylamine monomers such as N, N-dimethyldiallylammonium chloride (DADMAC);
- polyquaternary monomers such as dimethylaminopropylmethacrylamide chloride, N- (3-chloro-2-hydroxypropyl) trimethylammonium (DIQUAT) ...; optionally mixed with at least one nonionic monomer such as acrylamide, N-isopropylacrylamide, N, N-dimethyiacrylamide, dimethylaminoethylmethacrylate (DMAEMA), dimethylaminopropylmethacrylamide, vinyl alcohol, alkyl acrylates or methacrylates or hydroxyalkyl, polyoxyalkylene glycol acrylates or methacrylates ...
- nonionic monomer such as acrylamide, N-isopropylacrylamide, N, N-dimethyiacrylamide, dimethylaminoethylmethacrylate (DMAEMA), dimethylaminopropylmethacrylamide, vinyl alcohol, alkyl acrylates or methacrylates or hydroxyalkyl, polyoxyalkylene glycol
- amphoteric film-forming copolymers derived from cationic ethylenically unsaturated monomers mention may be made of those derived from at least one of the cationic monomers mentioned above and from at least one anionic monomer as
- MAPTAC acrylic or methacrylic acid
- DIQUAT acrylic or methacrylic acid
- DADMAC acrylic or methacrylic acid
- Said cationic or amphoteric film-forming homopolymers or copolymers derived from cationic ethylenically unsaturated monomers preferably have a molecular mass of less than 100,000 (molecular weight by weight, expressed in g / mol, which can be determined by aqueous gel permeation chromatography
- a second subject of the invention consists of a film-forming dispersion comprising
- the continuous phase of said dispersion comprising water and / or at least one alcohol with a boiling point of less than 120 ° C, preferably less than or equal to 100 ° C and having, when it includes water, a pH different from at least 1 unit, preferably at least 2 units, of the isoelectric point value of titanium dioxide in said dispersion.
- a pH different from at least 1 unit, preferably at least 2 units, of the isoelectric point value of titanium dioxide in said dispersion Preferential or more specific characteristics as to the nature of the titanium dioxide, of the continuous phase, of the pH regulators, of the other additives possibly present and of the respective amounts of the various components have already been mentioned above. Examples of organic film-forming polymers or alkoxylated organosiloxanes which can be used to improve the film-forming character of titanium nanoparticles have already been mentioned above.
- Said dispersion can be obtained by mixing its various components at room temperature.
- the continuous phase of said dispersion comprising water and / or at least one alcohol with a boiling point below 120 ° C, preferably less than or equal to 100 ° C and having, when it includes water, a pH different by at least 1 unit, preferably by at least 2 units, from the value of the isoelectric point of the titanium dioxide in said dispersion.
- They are preferably aqueous and have a pH of the order of 4 to 9.
- organic film-forming polymers which can be used to interact with the surface of the titanium dioxide particles, preferably by electrostatic bonding, have already been mentioned above.
- a final object of the invention consists of a method of cleaning and / or disinfecting the surfaces exposed to light, by depositing and then drying on said surfaces a film-forming dispersion of titanium dioxide, said titanium dioxide being in the form of elementary particles of size less than 100 nm, preferably less than 70 nm, and of specific surface greater than 150 m 2 / g, preferably greater than 200 m 2 / g, the continuous phase of said dispersion comprising water and / or at least one alcohol with a boiling point of less than 120 ° C, preferably less than or equal to 100 ° C, said dispersion having, when it comprises water, a pH different from at least 1 unit, preferably at least 2 units, the value of the isoelectric point of the titanium dioxide in the dispersion.
- the dispersion of titanium dioxide nanoparticles can be deposited on the surfaces by fine spraying on the surface to be treated, by application using a sponge, a mop or using a prepreg cellulosic material, or any other means, so as to deposit on the order of 0.01 to 10 g of titanium dioxide per m 2 of surface to be treated, preferably on the order of 0.05 to 5 g of titanium dioxide per m 2 of surface to be treated.
- a dispersion of titanium dioxide is prepared in the form of elementary particles of 40 nm and a specific surface of 250 m 2 / g after drying at 200 ° C. in a water / alcohol mixture, the composition of which is as follows
- a dispersion of titanium dioxide is prepared in the form of elementary particles of 40 nm and a specific surface of 250 m 2 / g after drying at 200 ° C. in a water / alcohol mixture, the composition of which is as follows
- a dispersion of titanium dioxide is prepared in the form of elementary particles of 40 nm and a specific surface of 250 m 2 / g after drying at 200 ° C. in a water / alcohol mixture, the composition of which is as follows
- a dispersion of titanium dioxide is prepared in the form of elementary particles of 40 nm and a specific surface of 250 m 2 / g after drying at 200 ° C. in a water / alcohol mixture, the composition of which is as follows
- Example 5 by introducing the film-forming polymer (providing gloss and oleophobia) into the colloidal aqueous dispersion of titanium dioxide, followed by the addition of the water-isopropanol mixture, then adjustment of the pH to 2.5.
- the film-forming polymer providing gloss and oleophobia
- a dispersion of titanium dioxide is prepared in the form of elementary particles of 40 nm and a specific surface of 250 m 2 / g after drying at 200 ° C. in a water / alcohol mixture, the composition of which is as follows
- a dispersion of titanium dioxide is prepared in the form of elementary particles of 40 nm and a specific surface of 250 m 2 / g after drying at 200 ° C. in a water / alcohol mixture, the composition of which is as follows
- test A In the presence of cationic polymer (test A) the dispersion remains homogeneous and the measurement of the particle size by laser diffusion confirms the absence of aggregation of titanium oxide (particle size: 40 nm).
- test B In the case of the solution without cationic polymer, (test B) a strong precipitation is observed during the addition of sodium hydroxide.
- the two neutralized solutions A and B are deposited on a black ceramic tile, using an adsorbent paper.
- the quantity deposited is of the order of 0.5 mg / cm 2 .
- solution A gives a layer of titanium invisible to the eye.
- solution B gives very clear white traces.
- a model stain, stearic acid is then deposited on each ceramic tile, having been previously treated with formulas A or B.
- the layer of stearic acid is approximately 0.01 mg / m 2 and it is obtained by depositing a 1% solution in isopropanol After drying, the tiles are exposed to visible light for 48 hours.
- the ceramic tile treated with solution A shows almost no trace of stearic acid visible to the eye.
- the tile treated with solution B shows visible traces of stearic acid.
- a film corresponding to 3 or 6 g of titanium dioxide per m 2 of tile surface is formed on a ceramic tile, by spreading, using a film puller, the dispersion of Example 2 over said tile.
- the film is left to dry in ambient air overnight.
- a suspension of bacteria (Pseudomonas Aeruginosa) is deposited on the entire surface of the tile.
- the tile covered by a cover which is not UV-impermeable (to avoid excessive dehydration of the bacteria), is exposed to UV light (365 nm) for 6 hours.
- the number of colonies is counted and compared to that obtained by depositing the same suspension of bacteria on an untreated tile.
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Abstract
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/890,944 US6905814B1 (en) | 1999-02-17 | 2000-02-15 | Use of film-forming titanium dioxide dispersions for cleaning and disinfecting surfaces, film-forming titanium dioxide dispersions |
| AU26773/00A AU2677300A (en) | 1999-02-17 | 2000-02-15 | Use of film-forming titanium dioxide dispersions for cleaning and disinfecting surfaces, film-forming titanium dioxide dispersions |
| EP00905137A EP1151068A1 (fr) | 1999-02-17 | 2000-02-15 | Utilisation de dispersions filmogenes de dioxyde de titane pour le nettoyage et la desinfection des surfaces, dispersions filmogenes de dioxyde de titane |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9901938A FR2789591B1 (fr) | 1999-02-17 | 1999-02-17 | Utilisation de dispersions filmogenes de dioxyde de titane pour la desinfection des surfaces dures, dispersions filmogenes de dioxyde de titane et procede de desinfection |
| FR99/01938 | 1999-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000049119A1 true WO2000049119A1 (fr) | 2000-08-24 |
Family
ID=9542147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2000/000371 Ceased WO2000049119A1 (fr) | 1999-02-17 | 2000-02-15 | Utilisation de dispersions filmogenes de dioxyde de titane pour le nettoyage et la desinfection des surfaces, dispersions filmogenes de dioxyde de titane |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6905814B1 (fr) |
| EP (1) | EP1151068A1 (fr) |
| AU (1) | AU2677300A (fr) |
| FR (1) | FR2789591B1 (fr) |
| WO (1) | WO2000049119A1 (fr) |
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| JP2009525246A (ja) * | 2006-02-01 | 2009-07-09 | コロロッビア イタリア ソシエタ ペル アチオニ | ナノ粒子の形態のTiO2の水性分散液の製造方法、及びこの方法で得られる分散体 |
| US8172951B2 (en) | 2000-12-21 | 2012-05-08 | Massholder Karl F | Method of cleaning with an aqueous composition containing a semiconductor |
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| FR2729673A1 (fr) * | 1995-01-25 | 1996-07-26 | Rhone Poulenc Chimie | Composition detergente contenant du dioxyde de titane a fonction bactericide et photo-oxydante |
| CA2260803A1 (fr) * | 1996-07-19 | 1998-01-29 | Toto Ltd. | Composition de revetement hydrophile photocatalytique |
| EP0857770A2 (fr) * | 1997-02-06 | 1998-08-12 | Shin-Etsu Chemical Co., Ltd. | Compositions de revêtement, films hydrophiles et articles revêtus d'un film hydrophile |
| FR2766494A1 (fr) * | 1997-07-22 | 1999-01-29 | Rhodia Chimie Sa | Dispersion de particules de titane comprenant un liant a base d'un polyorganosiloxane |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5616532A (en) * | 1990-12-14 | 1997-04-01 | E. Heller & Company | Photocatalyst-binder compositions |
| US5853866A (en) * | 1993-12-10 | 1998-12-29 | Toto Ltd. | Multi-functional material with photocalytic functions and method of manufacturing same |
| US5961843A (en) * | 1994-10-05 | 1999-10-05 | Toto Ltd. | Antimicrobial solid material, process for producing the same, and method of utilizing the same |
| US5753322A (en) * | 1995-04-21 | 1998-05-19 | Ykk Corporation | Antibacterial, antifungal aluminum building materials and fixtures using the materials |
| JP3690864B2 (ja) * | 1996-03-29 | 2005-08-31 | 株式会社ティオテクノ | 光触媒体の製造法 |
| US6340711B1 (en) * | 1996-08-30 | 2002-01-22 | Showa Denko K.K. | Particles aqueous dispersion and film of titanium oxide and preparation thereof |
| EP0924164A3 (fr) * | 1997-12-18 | 2000-01-05 | Hoya Corporation | Procédé de préparation d'oxydes ou des composites les contenant |
-
1999
- 1999-02-17 FR FR9901938A patent/FR2789591B1/fr not_active Expired - Fee Related
-
2000
- 2000-02-15 US US09/890,944 patent/US6905814B1/en not_active Expired - Fee Related
- 2000-02-15 EP EP00905137A patent/EP1151068A1/fr not_active Ceased
- 2000-02-15 AU AU26773/00A patent/AU2677300A/en not_active Abandoned
- 2000-02-15 WO PCT/FR2000/000371 patent/WO2000049119A1/fr not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2729673A1 (fr) * | 1995-01-25 | 1996-07-26 | Rhone Poulenc Chimie | Composition detergente contenant du dioxyde de titane a fonction bactericide et photo-oxydante |
| CA2260803A1 (fr) * | 1996-07-19 | 1998-01-29 | Toto Ltd. | Composition de revetement hydrophile photocatalytique |
| EP0857770A2 (fr) * | 1997-02-06 | 1998-08-12 | Shin-Etsu Chemical Co., Ltd. | Compositions de revêtement, films hydrophiles et articles revêtus d'un film hydrophile |
| FR2766494A1 (fr) * | 1997-07-22 | 1999-01-29 | Rhodia Chimie Sa | Dispersion de particules de titane comprenant un liant a base d'un polyorganosiloxane |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8172951B2 (en) | 2000-12-21 | 2012-05-08 | Massholder Karl F | Method of cleaning with an aqueous composition containing a semiconductor |
| FR2887448A1 (fr) * | 2005-06-23 | 2006-12-29 | Rhodia Chimie Sa | Composition cosmetique comprenant un copolymere ampholyte |
| WO2006136730A3 (fr) * | 2005-06-23 | 2007-03-08 | Rhodia Chimie Sa | Composition cosmetique comprenant un copolymere ampholyte |
| CN101247785B (zh) * | 2005-06-23 | 2013-04-24 | 罗地亚化学公司 | 包含两性共聚物的化妆品组合物 |
| JP2009525246A (ja) * | 2006-02-01 | 2009-07-09 | コロロッビア イタリア ソシエタ ペル アチオニ | ナノ粒子の形態のTiO2の水性分散液の製造方法、及びこの方法で得られる分散体 |
| US20200405894A1 (en) * | 2016-10-18 | 2020-12-31 | PurWorld Technologies LLC | System and method for reinsurance of air purification |
| US11819580B2 (en) * | 2016-10-18 | 2023-11-21 | PurWorld Technologies LLC | Method of chemically disinfecting a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| US6905814B1 (en) | 2005-06-14 |
| FR2789591A1 (fr) | 2000-08-18 |
| FR2789591B1 (fr) | 2002-10-04 |
| EP1151068A1 (fr) | 2001-11-07 |
| AU2677300A (en) | 2000-09-04 |
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