DE102009034187A1 - Wash-stable photocatalytic textile coating, useful to coat e.g. woven fabrics, and in material that is useful as photoactive filter to remove e.g. contaminants in air, where the coating is formed from anatase-containing nanosol and polymer - Google Patents
Wash-stable photocatalytic textile coating, useful to coat e.g. woven fabrics, and in material that is useful as photoactive filter to remove e.g. contaminants in air, where the coating is formed from anatase-containing nanosol and polymer Download PDFInfo
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- DE102009034187A1 DE102009034187A1 DE102009034187A DE102009034187A DE102009034187A1 DE 102009034187 A1 DE102009034187 A1 DE 102009034187A1 DE 102009034187 A DE102009034187 A DE 102009034187A DE 102009034187 A DE102009034187 A DE 102009034187A DE 102009034187 A1 DE102009034187 A1 DE 102009034187A1
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- Prior art keywords
- wash
- textile
- coating according
- nanosol
- textile coating
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- 239000004753 textile Substances 0.000 title claims abstract description 50
- 238000000576 coating method Methods 0.000 title claims abstract description 48
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 229920000642 polymer Polymers 0.000 title claims abstract description 34
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 29
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 title claims description 11
- 239000000356 contaminant Substances 0.000 title claims 2
- 239000002759 woven fabric Substances 0.000 title 1
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 6
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- -1 polysiloxane Polymers 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 238000006460 hydrolysis reaction Methods 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 2
- 238000004887 air purification Methods 0.000 claims description 2
- 229920001400 block copolymer Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 238000007306 functionalization reaction Methods 0.000 claims description 2
- 239000010842 industrial wastewater Substances 0.000 claims description 2
- 239000010841 municipal wastewater Substances 0.000 claims description 2
- 239000011858 nanopowder Substances 0.000 claims description 2
- 239000004745 nonwoven fabric Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 150000002924 oxiranes Chemical group 0.000 claims 11
- 238000004378 air conditioning Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 238000004043 dyeing Methods 0.000 claims 1
- 229920006294 polydialkylsiloxane Polymers 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 150000002118 epoxides Chemical group 0.000 description 11
- 229920000728 polyester Polymers 0.000 description 11
- 239000000243 solution Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 238000000746 purification Methods 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 4
- 229940043267 rhodamine b Drugs 0.000 description 4
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 2
- CQPFMGBJSMSXLP-ZAGWXBKKSA-M Acid orange 7 Chemical compound OC1=C(C2=CC=CC=C2C=C1)/N=N/C1=CC=C(C=C1)S(=O)(=O)[O-].[Na+] CQPFMGBJSMSXLP-ZAGWXBKKSA-M 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- VZTQQYMRXDUHDO-UHFFFAOYSA-N [2-hydroxy-3-[4-[2-[4-(2-hydroxy-3-prop-2-enoyloxypropoxy)phenyl]propan-2-yl]phenoxy]propyl] prop-2-enoate Chemical compound C=1C=C(OCC(O)COC(=O)C=C)C=CC=1C(C)(C)C1=CC=C(OCC(O)COC(=O)C=C)C=C1 VZTQQYMRXDUHDO-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 229960000907 methylthioninium chloride Drugs 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical group C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- WHGNXNCOTZPEEK-UHFFFAOYSA-N dimethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](C)(OC)CCCOCC1CO1 WHGNXNCOTZPEEK-UHFFFAOYSA-N 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B01J35/39—
-
- B01J35/58—
-
- 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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0219—Coating the coating containing organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/55—Epoxy resins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/65—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing epoxy groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/455—Gas separation or purification devices adapted for specific applications for transportable use
- B01D2259/4558—Gas separation or purification devices adapted for specific applications for transportable use for being employed as mobile cleaners for ambient air, i.e. the earth's atmosphere
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Textile Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
Abstract
Description
Schadstoffe in Luft und Wasser beeinträchtigen die Lebensqualität und gefährden die Gesundheit bei höherer und längerer Exposition. Daraus resultiert ein hoher Bedarf an effizienten und kostengünstigen Filter- und Aufbereitungsverfahren sowohl in der Industrie als auch im Privatbereich. Bedarf besteht neben der Luftreinigung besonders bei der Aufbereitung von Grundwässern, der weitergehenden Reinigung kommunaler Abwässer zwecks Wiederverwendung und der Detoxifizierung und Reinigung von Industrieabwässern.pollutants in air and water affect the quality of life and endanger health at higher and longer Exposition. This results in a high demand for efficient and cost-effective filtering and treatment process both in the industry as well as in the private sector. Need exists next air purification, especially in the treatment of groundwater, the further purification of municipal wastewater in order Reuse and detoxification and purification of industrial wastewater.
Als
eine effektiv wirkende, energieautarke Variante gilt der photooxidative
Abbau der organischen Schadstoffe durch Titandioxid in der Anatas-Modifikation.
Seit ca. 20 Jahren ist bekannt, dass diese TiO2-Modifikation
unter dem Einfluss von UV A Licht („Schwarzlicht”)
bzw. Sonnenlicht in der Lage ist, toxische Substanzen an der Luft
und im Wasser abzubauen (
Durch die Fortschritte der Sol-Gel-Technik ist es in den letzten Jahren möglich geworden, photoempfindliche Anatas-Nanosole bei Temperaturen unter 100°C herzustellen. Damit besteht die prinzipielle Möglichkeit, photoempfindliche TiO2-Schichten auch auf thermisch empfindlichen organischen Trägern wie Polymerfolien und Textilien zu erzeugen.The progress of the sol-gel technique has made it possible in recent years to produce photosensitive anatase nanosols at temperatures below 100 ° C. This provides the basic possibility of producing photosensitive TiO 2 layers even on thermally sensitive organic supports such as polymer films and textiles.
Insbesondere
die Beschichtung auf technischen Faserstoffen würde den
Vorteil bieten, deren mechanischen Festigkeit mit gleichzeitiger
Flexibilität und Drapierbarkeit und eine Durchströmbarkeit
für Luft und Wasser zu vereinen und auf einfachem Wege
die Herstellung photokatalytischer Wasserreinigungsanlagen zu ermöglichen,
wie sie durch eine aufwändige flammenpyrolytische Abscheidung
von photoaktiven TiO2 auf Polyester bereits
vorgeschlagen wurden (
Nach dem Stand der Technik ergibt sich somit ein hoher Bedarf an photoaktiven Textilbeschichtungen, die eine hohe mechanische Stabilität und Photoaktivität mit einer hohen Waschstabilität verbinden und zu keiner photooxidativen Schädigung des textilen Substrates führen.To The prior art thus results in a high demand for photoactive Textile coatings that have a high mechanical stability and photoactivity with a high washing stability and cause no photooxidative damage to the lead textile substrate.
Überraschenderweise konnte diese Aufgabe erfindungsgemäß durch Beschichtungen gelöst werden, die anatashaltige Nanosole (A) mit epoxidgruppen-haltigen Polymeren (B) kombinieren.Surprisingly could this object according to the invention by coatings be solved, the anatase-containing nanosols (A) containing epoxide groups Combine polymers (B).
Die Beschichtung kann in unterschiedlichen Varianten erzeugt werden:
- (a) Herstellung einer Doppelschicht: Zuerst erfolgt die Imprägnierung des Textils mit einer Lösung oder Dispersion des epoxidgruppen-haltigen Polymers (B). Zur Verbesserung der mechanischen Stabilität und Verbesserung der Barrierewirkung zur Vermeidung von photooxidativen Schädigungen des Textils kann das Polymer auch in einem SiO2-Nanosol gelöst oder dispergiert werden, womit eine gut haftende Polymer-SiO2-Kompositschicht als haftvermittelnde Schicht direkt auf dem Textil erzeugt wird. Nach einer Trocknung erfolgt anschließend die zweite Beschichtung durch das Nanosol (A). Diese Variante hat den Vorteil, dass durch die Imprägnierung mit dem Polymer (B) bzw. der Polymer-SiO2-Kompositschicht das textile Substrat vor einem direkten Kontakt mit TiO2 und damit vor photokatalytischen Schädigungen geschützt ist.
- (b) Herstellung einer Mischschicht: Es wird eine Mischung des anatas-haltigen Nanosols (A) und eines epoxidgruppen-haltigen Polymers (B) erzeugt, wobei der Anteil B in der Schicht vorteilhaft zwischen 20 und 60 Gew.-% beträgt. Diese Variante hat gegenüber der Doppelschicht den Vorteil, dass sie technologisch einfacher zu realisieren ist. Sie kann dort angewendet werden, wo eine mögliche photooxidative Schädigung des textilen Substrates tolerierbar ist.
- (a) Preparation of a double layer: First, the impregnation of the textile is carried out with a solution or dispersion of the epoxide group-containing polymer (B). To improve the mechanical stability and to improve the barrier effect to avoid photooxidative damage to the textile, the polymer can also be dissolved or dispersed in a SiO 2 nanosol, thus producing a well-adhering polymer SiO 2 composite layer as an adhesion-promoting layer directly on the textile , After drying, the second coating then takes place through the nanosol (A). This variant has the advantage that the textile substrate is protected from direct contact with TiO 2 and thus from photocatalytic damage by the impregnation with the polymer (B) or the polymer-SiO 2 composite layer.
- (b) Preparation of a mixed layer: A mixture of the anatase-containing nanosol (A) and an ep produced oxide-containing polymer (B), wherein the proportion B in the layer is advantageously between 20 and 60 wt .-%. This variant has the advantage over the double layer that it is technologically easier to implement. It can be used where a possible photooxidative damage to the textile substrate is tolerable.
Das anatashaltige Nanosol (A) kann durch Hydrolyse von Tetraalkoxytitanaten oder Titantetrahalogeniden in wässrig-alkoholischer Lösung bei Temperaturen zwischen 50°C und 200°C und Reaktionszeiten zwischen 0,5–24 h hergestellt werden. Lange Reaktionszeiten und hohe Wasseranteile sichern die Bildung photoaktiver TiO2-Partikel in der Anatas-Modifikation mit mittleren Teilchengrößen unter 150 nm. Es ist auch möglich, als anatashaltiges Nanosol kommerzielle TiO2-Nanopulver wie P25/Degussa oder Hombikat/Sachtleben in wässrig-alkoholischen Lösungen mit Hilfe von Ultraschall zu redispergieren. bzw. kommerzielle Nanosole mit amorphen TiO2-Partikel (z. B. ISYS-Sole der Fa. CHT R. SEITLICH GmbH Tübingen) solvothermisch bei Temperaturen zwischen 100°C und 180°C und Reaktionszeiten zwischen 1 und 4 h in anatashaltige Nanosole zu überführen.The anatase-containing nanosol (A) can be prepared by hydrolysis of tetraalkoxytitanates or titanium tetrahalides in aqueous-alcoholic solution at temperatures between 50 ° C and 200 ° C and reaction times between 0.5-24 h. Long reaction times and high proportions of water ensure the formation of photoactive TiO 2 particles in the anatase modification with mean particle sizes below 150 nm. It is also possible to use commercial TiO 2 nanopowders such as P25 / Degussa or Hombikat / Sachtleben in aqueous-alcoholic nanosol as the anatase-containing nanosol Redisperse solutions using ultrasound. or commercial nanosols with amorphous TiO 2 particles (eg ISYS brine from CHT R. SITLICH GmbH Tübingen) solvothermically at temperatures between 100 ° C. and 180 ° C. and reaction times between 1 and 4 h in anatase-containing nanosols convict.
Als epoxidgruppen-haltige Polymere (B) können verschiedene Stoffgruppen genutzt werden:
- (a) organische Polymere oder Copolymere, die endständige Epoxidgruppen oder Epoxidgruppen in der Seitenkette enthalten. Beispiele sind Polyacrylate, die Glycidyl-methacrylat als Monomer enthalten.
- (b) Hybridpolymere, die durch Hydrolyse von Glycidylalkyl-trialkoxysilanen oder durch Co-Hydrolyse von Glycidylalkyl-trialkoxysilanen mit Tetraalkoxysilanen entstehen. Geeignete Verbindungen sind z. B. γ-Glycidoxypropylmethyldimethoxysilan, γ-Giycidoxypropyltrimethoxysilan, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilan,
- (c) Polysiloxan-Verbindungen mit endständigen Epoxid-Gruppen, z. B. handelsübliche Polydimethylsiloxane mit Diglycidylether-Endgruppen (Aldrich). oder in den Seitenketten, z. B. Poly-[dimethylsiloxan-co-)2-(3,4-epoxycyclohexenyl)-ethyl)-methylsiloxan] (Aldrich)
- (d) epoxidgruppen-haltige Blockcopolymere von Polysiloxanen mit Epoxiden, Acrylaten oder Polyethern.
- (A) organic polymers or copolymers containing terminal epoxide groups or epoxide groups in the side chain. Examples are polyacrylates containing glycidyl methacrylate as a monomer.
- (b) hybrid polymers formed by hydrolysis of glycidyl-alkyltrialkoxysilanes or by co-hydrolysis of glycidyl-alkyltrialkoxysilanes with tetraalkoxysilanes. Suitable compounds are for. Gamma-glycidoxypropylmethyldimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, beta (3,4-epoxycyclohexyl) ethyltrimethoxysilane,
- (c) polysiloxane compounds having terminal epoxide groups, e.g. B. commercial polydimethylsiloxanes with diglycidyl ether end groups (Aldrich). or in the side chains, e.g. B. Poly [dimethylsiloxane-co-) 2- (3,4-epoxycyclohexenyl) -ethyl) -methylsiloxane] (Aldrich)
- (d) epoxide group-containing block copolymers of polysiloxanes with epoxides, acrylates or polyethers.
Die Blockpolymere bestehen aus abwechselnden Blöcken oder Segmenten der genannten Polymere, z. B. aus „harten” Polyepoxiden und aus „weichen” Polysiloxanen, wobei sich an beiden Kettenenden grundsätzlich reaktive Epoxidblöcke befinden. Diese Produktgruppe verbindet die normalerweise unverträglichen Polymertypen zu einem homogenen Copolymerisat, das die vorteilhaften Eigenschaften der beiden Ausgangspolymere in sich vereinigt, d. h. vom Polysiloxan die hohe Elastizität, UV-Stabilität, Hitze- und Alterungsbeständigkeit und vom Epoxidharz die hervorragende Haftfestigkeit auf sehr vielen Untergründen, die hohe mechanische Festigkeit und die gute chemische Beständigkeit. Derartige Epoxid-Silicon-Copolymere sind z. B. unter dem Handelsnamen Tegomer bzw. Silikopon/Evonik Tego Chemie GmbH kommerziell verfügbar.The Block polymers consist of alternating blocks or segments the said polymers, for. B. from "hard" Polyepoxiden and "soft" polysiloxanes, wherein both chain ends basically reactive epoxy blocks are located. This product group combines the normally incompatible types of polymers to a homogeneous copolymer which has the advantageous properties the two starting polymers combined in it, d. H. from the polysiloxane the high elasticity, UV stability, heat and Aging resistance and of the epoxy resin the outstanding Adhesive strength on many substrates, the high mechanical Strength and good chemical resistance. such Epoxy-silicone copolymers are z. B. under the trade name Tegomer or Silikopon / Evonik Tego Chemie GmbH commercially available.
Die erfindungsgemäßen Beschichtungen bestehend aus einem anatas-haltigen Nanosol (A) und einem epoxidgruppen-haltigen Polymer (B) weisen eine Reihe von Vorteilen gegenüber dem Stand der Technik auf:
- – die Beschichtungen können in einfacher Weise durch übliche Beschichtungstechniken für Textilien erzeugt werden z. B. Tauchen, Sprühen, Foulardieren, Rakeln, Schaumauftrag. Auch Einzelfaden-Beschichtungen sind problemlos möglich.
- – die Beschichtungen sind für die unterschiedlichsten textilen Materialien wie Spinnfasergarnen, Mono- und Multifilamenten, Stapelfasern, Garne, Gewebe, Gestricke, Gewirke, Filz, Vliesstoffe, Teppiche, Schwämme oder von Celluloseprodukten (z. B. Papier- oder Pappfilter) auf verschiedenen Fasertypen aus anorganischen und organischen Materialien anwendbar.
- – die Beschichtungen sind transparent, gut haftend, langzeitstabil und beeinträchtigen nicht wesentlich die haptischen Eigenschaften der Textilien
- – die Beschichtungen weisen eine hohe Photoaktivität im nahen UV-Bereich auf
- – die Beschichtungen sind wässerungsstabil und verändern nicht ihre photokatalytischen Eigenschaften nach vierwöchigem Wässern in bewegtem Wasser
- – die Beschichtungen zeigen eine hervorragende Waschstabiliät und die guten photokatalytischen Eigenschaften bleiben nach mehreren Haushalts-Normwäschen konstant.
- - The coatings can be produced in a simple manner by conventional coating techniques for textiles z. As dipping, spraying, padding, doctoring, foam application. Even single-thread coatings are possible without any problems.
- The coatings are applicable to a wide variety of textile materials such as spun yarns, monofilaments and multifilaments, staple fibers, yarns, fabrics, knits, knits, felt, nonwovens, carpets, sponges or cellulose products (eg paper or cardboard filters) on different fiber types of inorganic and organic materials applicable.
- - The coatings are transparent, good adhesion, long-term stability and do not significantly affect the haptic properties of textiles
- - The coatings have a high photoactivity in the near UV range
- - The coatings are stable to water and do not change their photocatalytic properties after four weeks of washing in moving water
- - The coatings show excellent wash stability and the good photocatalytic properties remain constant after several household standard washes.
Die erfindungsgemäßen Beschichtungen bestehend aus einem anatas-haltigen Nanosol (A) und einem epoxidgruppen-haltigen Polymer (B) können darum vorteilhaft als wässerungsstabile photoaktive Filter zur Beseitigung von Inhalts- und Schadstoffen in Luft und Wasser genutzt werden. Besondere Einsatzgebiete sind photoaktive Filter zur Reinigung von Abwässern, u. a. auch solche, die bei der Herstellung, Funktionalisierung und Färbung von Textilien entstehen.The coatings according to the invention consisting of an anatase-containing nanosol (A) and an epoxide group-containing Polymer (B) can therefore be used as water-stable Photoactive filters for the removal of contents and pollutants be used in air and water. Special applications are photoactive filters for the purification of waste water, u. a. also those involved in the manufacture, functionalization and coloring of textiles.
Die folgenden Beispiele demonstrieren die hohe Photoaktivität der erfindungsgemäßen Beschichtungen beim Abbau unterschiedlicher Farbstoffe in wässrigen Lösungen sowie die hervorragende Waschstabilität.The The following examples demonstrate the high photoactivity the coatings of the invention during degradation different dyes in aqueous solutions as well as the excellent wash stability.
Ausführungsbeispiele:EXAMPLES
Verwendete TiO2-Nanosole:TiO 2 nanosols used:
- – TiO2-Nanosol H: Herstellung aus 12 ml Tetraisopropyltitanat, 4.2 g Acetylaceton in 10 ml Isopropanol/75 ml Wasser/2 ml HNO3 bei 80°C/8 h,TiO 2 nanosol H: preparation from 12 ml tetraisopropyl titanate, 4.2 g acetylacetone in 10 ml isopropanol / 75 ml water / 2 ml HNO 3 at 80 ° C./8 h,
- – TiO2-Nanosol M: Herstellung aus 30 ml Tetraisopropyltitanat, 5 ml Ethanol, 180 ml Wasser und 2 ml HNO3 bei 80°C/8 h- TiO 2 nanosol M: Preparation from 30 ml of tetraisopropyl titanate, 5 ml of ethanol, 180 ml of water and 2 ml of HNO 3 at 80 ° C / 8 h
Verwendetes Textilgewebe:Used textile fabric:
- – Textiltyp MA gitterförmiges Polyester mit einem Flächengewicht von 109 g/m2 der Fa. Mattes & Ammann KG, Meßstetten; Chargennummer 30886/1- Textile type MA latticed polyester with a weight per unit area of 109 g / m 2 from Mattes & Ammann KG, Messstetten; Batch number 30886/1
- – Textiltyp JU Polyestergewebe der Fa. Junker Filter GmbH, Sinsheim, Typ: Polyester Junker Filter 5090- Textile type JU Polyester fabric from the company Junker Filter GmbH, Sinsheim, Type: Polyester Junker Filter 5090
Versuchsdurchführung:Experimental procedure:
1. Doppelschicht1. double layer
30 × 12 cm2 Polyesterproben MA und JF wurden mit folgenden Polymeren durch eine Tauchbeschichtung imprägniert: 3% Ebecryl 600 (Epoxyacrylat-Oligomer/Fluka) in Ethanol, 2–4% Tegomer E-Si 2130, E-Si 2330 bzw Silikopon EF (Evonik Tego Chemie GmbH) in Ethanol bzw. in einem 5% SiO2-Nanosol (hergestellt durch 24 h Rühren von 25 ml Tetraethoxysilan, 105 ml Ethanol und 5 ml 0.01 n Salzsäure) gelöst. Nach Trocknen bei Raumtemperatur an der Luft wurden die Proben 1 h bei 60°C getrocknet. Anschließend werden die Textilien mit Nanosol H bzw. M tauchbeschichtet und 1 h bei 60°C getempert. Die hohe Photoaktivität der so beschichteten Polyestermaterialien nach Herstellung und nach wiederholter Haushalts-Normwäsche zeigt Tabelle 1.30 × 12 cm 2 polyester samples MA and JF were impregnated with the following polymers by dip coating: 3% Ebecryl 600 (epoxy acrylate oligomer / Fluka) in ethanol, 2-4% Tegomer E-Si 2130, E-Si 2330 or Silikopon EF ( Evonik Tego Chemie GmbH) in ethanol or in a 5% SiO 2 nanosol (prepared by stirring for 24 hours 25 ml of tetraethoxysilane, 105 ml of ethanol and 5 ml of 0.01 N hydrochloric acid). After drying at room temperature in the air, the samples were dried at 60 ° C for 1 h. The textiles are then dip-coated with Nanosol H or M and annealed at 60 ° C. for 1 h. The high photoactivity of the thus coated polyester materials after production and after repeated household standard washing is shown in Table 1.
2. Mischschicht2nd mixed layer
30 × 12 cm2 Polyesterproben MA und JF wurden durch Tauchbeschichtung mit einem Gemisch der Nanosole H bzw. M und 0.5–5% Tegomer E-Si2330 bzw Silikopon EF (Evonik Tego Chemie GmbH) beschichtet. Nach Trocknen bei Raumtemperatur an Luft wurden die Proben 1 h bei 120°C getrocknet. Die hohe Photoaktivität der so beschichteten Polyestermaterialien nach Herstellung und nach wiederholter Haushalts-Normwäsche zeigt Tabelle 2.30 × 12 cm 2 polyester samples MA and JF were coated by dip coating with a mixture of nanosols H and M and 0.5-5% Tegomer E-Si2330 or silica EF (Evonik Tego Chemie GmbH). After drying at room temperature in air, the samples were dried at 120 ° C for 1 h. The high photoactivity of the thus coated polyester materials after production and after repeated household standard washing is shown in Table 2.
3. Bestimmung: Photokatalytische Aktivität3rd determination: Photocatalytic activity
Die
photokatalytische Aktivität wird durch die Zersetzung des
Farbstoffs AcidOrange7, Methylenblau, Rhodamin B unter Schwarzlicht
bestimmt: Textilstreifen (1 cm × 5 cm) werden zusammen
mit 15 ml der Farbstofflösung (0.1 mmol/l) in einem 20
ml HeadSpace-Gefäß verschlossen (unbeschichteter
Textilstreifen als Referenz) und auf einem Kippschüttler
für sechs Stunden mit Schwarzlicht (UV-Leuchtstoff-Röhre;
Omnilux, 18 Watt) belichtet (Referenz ohne Belichtung mit sechs
Stunden schütteln = Konzentration cdunkel).
Die Bestimmung der verbliebenen Farbstoffkonzentration erfolgt mittels
Spektralphotometer (cbelichtet) und erlaubt
anhand einer Eichkurve die Berechnung der Ausbleichrate A:
Die
Ergebnisse für die Ausbleichung von Rhodamin B sind in
den folgenden Tabellen zu sehen; ähnliche Ausbleichergebnisse
wurden auch mit AcidOrange7 und Methylenblau erhalten. Die Ergebnisse
dokumentieren, dass durch epoxygruppen-haltige Polymere sowohl durch
Vorbehandlung (Tabelle 1) als auch durch Zusatz zu TiO2-Nanosolen
(Tabelle 2) selbst nach 5 ECE-Normwäschen bei 40°C
keine Verringerung der photokatalytischen Aktivität eintritt.
Im Vergleich dazu tritt bei alleiniger Applikation der TiO2-Nanosole ohne epoxygruppen-haltige Polymere
eine deutliche Verminderung der Photoaktivität bereits
nach der ersten ECE-Normwäsche ein. Tabelle 1: Ausbleichraten A von Rhodamin B-Lösungen
bei Belichtung in Gegenwart Polyesterstreifen mit waschstabilen photokatalytischen
Textilbeschichtungen. Die Applikation der TiO2-Nanosole
erfolgt nach Vorbehandlung der Textilien mit epoxygruppen-haltigen
Polymeren.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 10085675 [0002] - EP 10085675 [0002]
- - JP 6285458 [0004] - JP 6285458 [0004]
- - US 2008031783 [0004] US 2008031783 [0004]
- - WO 200927432 [0004] WO 200927432 [0004]
- - JP 1120695 [0004] - JP 1120695 [0004]
- - CN 1616752 [0004] - CN 1616752 [0004]
Zitierte Nicht-PatentliteraturCited non-patent literature
- - T. Watanabe, Photocatalytic Purification and Treatment of Water and Air, ed. D. Ollis and H. El-Akabi, Elsevier, New York 1993 [0002] T. Watanabe, Photocatalytic Purification and Treatment of Water and Air, ed. D. Ollis and H. El-Akabi, Elsevier, New York 1993 [0002]
Claims (18)
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DE102009034187A DE102009034187A1 (en) | 2009-07-22 | 2009-07-22 | Wash-stable photocatalytic textile coating, useful to coat e.g. woven fabrics, and in material that is useful as photoactive filter to remove e.g. contaminants in air, where the coating is formed from anatase-containing nanosol and polymer |
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DE102009034187A DE102009034187A1 (en) | 2009-07-22 | 2009-07-22 | Wash-stable photocatalytic textile coating, useful to coat e.g. woven fabrics, and in material that is useful as photoactive filter to remove e.g. contaminants in air, where the coating is formed from anatase-containing nanosol and polymer |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102011103504A1 (en) | 2011-06-04 | 2012-12-06 | Gmbu E.V., Fachsektion Dresden | Photoactive textile material produced by coating a pre-treated textile material with a nanocrystalline titania sol containing a noble metal salt and a chelating agent, useful as photocatalyst to degrade organic substances in waste water |
WO2017211497A1 (en) * | 2016-06-07 | 2017-12-14 | Robert Bosch Gmbh | Filter apparatus |
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JPH01120695A (en) | 1987-11-05 | 1989-05-12 | Omron Tateisi Electron Co | Incoming/outgoing processor for paper money |
JPH06285458A (en) | 1993-03-31 | 1994-10-11 | Suzuki Sogyo Co Ltd | Water purifying apparatus |
EP1085675A2 (en) | 1999-09-14 | 2001-03-21 | Lucent Technologies Inc. | Power control method for broadcast messages |
CN1616752A (en) | 2004-10-12 | 2005-05-18 | 成都纺织高等专科学校 | Fabric containing nano titanium dioxide mixture with light self cleaning function and its preparing method |
US20080031783A1 (en) | 2005-04-02 | 2008-02-07 | Briggs Daniel J | Photocatalytic fabric |
WO2009027432A1 (en) | 2007-08-28 | 2009-03-05 | Basf Se | Photoactive tio2 in coating materials |
-
2009
- 2009-07-22 DE DE102009034187A patent/DE102009034187A1/en not_active Withdrawn
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JPH01120695A (en) | 1987-11-05 | 1989-05-12 | Omron Tateisi Electron Co | Incoming/outgoing processor for paper money |
JPH06285458A (en) | 1993-03-31 | 1994-10-11 | Suzuki Sogyo Co Ltd | Water purifying apparatus |
EP1085675A2 (en) | 1999-09-14 | 2001-03-21 | Lucent Technologies Inc. | Power control method for broadcast messages |
CN1616752A (en) | 2004-10-12 | 2005-05-18 | 成都纺织高等专科学校 | Fabric containing nano titanium dioxide mixture with light self cleaning function and its preparing method |
US20080031783A1 (en) | 2005-04-02 | 2008-02-07 | Briggs Daniel J | Photocatalytic fabric |
WO2009027432A1 (en) | 2007-08-28 | 2009-03-05 | Basf Se | Photoactive tio2 in coating materials |
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Title |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011103504A1 (en) | 2011-06-04 | 2012-12-06 | Gmbu E.V., Fachsektion Dresden | Photoactive textile material produced by coating a pre-treated textile material with a nanocrystalline titania sol containing a noble metal salt and a chelating agent, useful as photocatalyst to degrade organic substances in waste water |
WO2017211497A1 (en) * | 2016-06-07 | 2017-12-14 | Robert Bosch Gmbh | Filter apparatus |
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