WO2002085990A1 - Composition de matiere de revetement ayant une activite photocatalytique - Google Patents
Composition de matiere de revetement ayant une activite photocatalytique Download PDFInfo
- Publication number
- WO2002085990A1 WO2002085990A1 PCT/JP2002/003536 JP0203536W WO02085990A1 WO 2002085990 A1 WO2002085990 A1 WO 2002085990A1 JP 0203536 W JP0203536 W JP 0203536W WO 02085990 A1 WO02085990 A1 WO 02085990A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- photocatalytic
- solution
- weight
- alkali silicate
- aqueous
- Prior art date
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 63
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 61
- 239000000203 mixture Substances 0.000 title claims abstract description 40
- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 title abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims abstract description 44
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- 239000000243 solution Substances 0.000 claims description 70
- 239000007864 aqueous solution Substances 0.000 claims description 49
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 43
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 42
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 15
- 239000004115 Sodium Silicate Substances 0.000 claims description 12
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 12
- 239000008199 coating composition Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 7
- 239000003973 paint Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052710 silicon Inorganic materials 0.000 abstract description 14
- 239000010703 silicon Substances 0.000 abstract description 14
- 239000011941 photocatalyst Substances 0.000 abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 10
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 9
- 150000001340 alkali metals Chemical class 0.000 abstract description 9
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 31
- 235000019353 potassium silicate Nutrition 0.000 description 30
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 238000000909 electrodialysis Methods 0.000 description 24
- 239000012528 membrane Substances 0.000 description 24
- 239000008119 colloidal silica Substances 0.000 description 20
- 238000001223 reverse osmosis Methods 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 18
- 239000002245 particle Substances 0.000 description 18
- -1 colloidal silica Chemical compound 0.000 description 17
- 239000011734 sodium Substances 0.000 description 17
- 238000011033 desalting Methods 0.000 description 15
- 239000010408 film Substances 0.000 description 13
- 150000001450 anions Chemical class 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 239000003014 ion exchange membrane Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 238000005341 cation exchange Methods 0.000 description 7
- 229920001296 polysiloxane Polymers 0.000 description 7
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 5
- 238000005481 NMR spectroscopy Methods 0.000 description 5
- 239000003518 caustics Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 239000003011 anion exchange membrane Substances 0.000 description 4
- 125000000129 anionic group Chemical group 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- 238000000108 ultra-filtration Methods 0.000 description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 3
- 238000004847 absorption spectroscopy Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000012670 alkaline solution Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 229920000578 graft copolymer Polymers 0.000 description 3
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 229910001413 alkali metal ion Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005349 anion exchange Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003729 cation exchange resin Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 101150096839 Fcmr gene Proteins 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 101150107341 RERE gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- GJAYYEWRFJQMQK-UHFFFAOYSA-N acetic acid;ethyl carbamate Chemical compound CC(O)=O.CCOC(N)=O GJAYYEWRFJQMQK-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000002338 electrophoretic light scattering Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- AHLBNYSZXLDEJQ-FWEHEUNISA-N orlistat Chemical compound CCCCCCCCCCC[C@H](OC(=O)[C@H](CC(C)C)NC=O)C[C@@H]1OC(=O)[C@H]1CCCCCC AHLBNYSZXLDEJQ-FWEHEUNISA-N 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- LKJMGLFKGKSOCH-UHFFFAOYSA-N titanium Chemical compound [Ti].[Ti].[Ti] LKJMGLFKGKSOCH-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
Definitions
- the present invention relates to, for example, plastic, metal, glass, ceramic, concrete
- silicon-based resins are well known as a coating agent for imparting hydrophilicity and anti-fog properties to the surface of eyeglass lenses, bathroom mirrors, injection needles and the like.
- a coating agent consisting of a mixture of anatase type titanium oxide T io 2 and a silicon-based resin having a photocatalytic activity by coating, are also known surface hydrophilic substrate exhibits hydrophilicity effect during UV irradiation.
- the hydrophilic coating agent comprising anatase Sani ⁇ titanium T io 2 and a silicon-based resin having a photocatalytic ability, in order to exhibit the hydrophilic functionality are required ultraviolet irradiation, ultraviolet irradiation When installed in a place where it is not performed, there is a disadvantage that the hydrophilic function cannot be exhibited.
- Japanese Patent Application Laid-Open No. 10-2373753 discloses a "hydrophilic coating agent containing an amorphous titanium oxide and a silicon oxide".
- specific examples of the silicon oxide include silicon dioxide such as colloidal silica, as well as siloxane compounds such as silicone and organopolysiloxane, and water glass.
- siloxane compounds have the disadvantages of insufficient dispersibility and poor mechanical strength of the coating film.
- Water glass has a disadvantage that the dispersibility becomes insufficient due to low anion activity.
- the contact angle of inorganic refuse represented by clay minerals with water is 20 ° to 50 °, and it has an affinity for a 30 ° to 40 ° graphitic polymer coating film with a contact angle with water. It is considered that the coating of the graft polymer cannot prevent contamination by inorganic dust because it easily adheres to the surface.
- acrylic resin acrylic silicone resin, water-based silicone, block polymer of silicone resin and acrylic resin, acrylic styrene resin,
- Various hydrophilic paints comprising a crosslinked urethane of rubitan fatty acid ethylene oxide, sorbitan fatty acid ester, urethane acetate, polycarbonate diol and z or polyisocyanate, and a crosslinked polyacrylate alkyl ester are commercially available.
- the contact angle of these hydrophilic paints with water is relatively large, and it is not possible to effectively prevent contamination by urban dust containing a large amount of lipophilic substances.
- an aqueous solution of aluminum silicate called water glass contains a relatively large amount of alkali ions in order to maintain the solution state, so that the molar ratio of silicon to alkali is high.
- silicic acid sol and colloidal silica have no internal surface area or crystalline portion, and these are dispersed in an alkaline medium.
- Alkali reacts with the silica surface to create a negative charge on the alkali surface, and the silica particles have a negative charge, which is stabilized by the repulsive force of the negative charges among the particles.
- Si-0H silanol groups
- the molar ratio, high-Re S i ⁇ 2 concentration activity of Rapi should be considered to use silicate al Chikarari solution. And to force, only concentrated by simple evaporation of water glass can not be increased molar ratio, for example, up to 30% by weight Si0 2 concentration the product of highest 4.0 molar ratio among water glass When concentrated, it gels completely.
- colloidal silica is concentrated by an ultrafiltration method (for example, see US Pat. No. 3,969,266, British Patent No. 1,148,950, and JP-A-58-15022). ). If the colloidal silicic force is in the state of silica particles growing, it can be sufficiently concentrated by ultrafiltration S. Water glass has many low molecular weight components such as ions, and the yield by the Ponto extrafiltration method is low. . In addition, since the loss of ions is large, the anionic activity inherent in water glass is also lost. Purpose of the invention
- the present invention has been made in view of the above problems, has intermediate characteristics between water glass and co Roidarushirika, the molar ratio (Si0 2 / (A 2 0 + B) (A: alkali
- A alkali
- Such a photocatalytic coating agent composition of the present invention comprises the aqueous solution of silica silicate (1) : 100 parts by weight (solid content) and the photocatalytic compound (2): 95 to 9500 parts by weight. Is preferred.
- the photocatalytic regeneration compound (2) is an anatase type titanium oxide.
- the photocatalytic coating agent composition of the present invention may contain a film-forming auxiliary (3).
- the aqueous alkali silicate solution (1) 100 parts by weight (solid content)
- the photocatalytic compound (2) 95 to 9500 parts by weight
- the film-forming auxiliary (3) 95 to 9500 parts by weight. It preferably comprises
- the photocatalytic coating agent composition aqueous solution (1) of the photocatalytic coating agent composition used in the present invention preferably has the following properties (C) to (F). Meet at least one of
- the peak area at a chemical shift of 100 to 120 ppm is at least 1.35 times the peak area at 100 to 120 ppm of the chemical shift of water glass measured under 2 ⁇ i-NMR under the same conditions; Chemical shift of colloidal sili force measured by 29 Si-NMR under the same force and condition-100 times or more the peak area at 120 ppm.
- Fig. 2 shows 2i-NMR spectra of aqueous sodium silicate solution and water glass colloidal silicide (SM manufactured by DuPont) produced in Production Examples.
- the photocatalytic coating agent composition according to the present invention comprises a specific aqueous solution of an alkali silicate (1) and a photocatalytic compound (2) as essential components. ).
- an alkali silicate (1) and a photocatalytic compound (2) as essential components.
- Aqueous alkali silicate solution (1) Aqueous alkali silicate solution (1)
- Silicate Al Chikarari aqueous solution used in the present invention has between properties in a water glass and colloidal silica, the molar ratio (Si0 2 / (A 2 0 + B) (A: alkali metal, B: NH 3) It has a high silicon content and a high degree of anion activation. That is, the aqueous solution of alkali silicate used in the present invention has a feature that the content of silicon with respect to alkali is higher than that of ordinary water glass.
- lithium, sodium, power stream, ammo, and the like are used as the aluminum power.
- the molar ratio of Kei element and Al force Li (A) (SiO Bruno (A 2 0 + B) ( A: alkali metal, B: NH 3) is 4 to 30, It is preferably from 9 to 26, and more preferably from 12 to 21.
- the alkali is lithium, sodium, potassium or the like
- the molar ratio is calculated as oxide (A 20 , where A is an alkali metal).
- ammonia is an ammonia, it is a value calculated on an ammonia basis.
- Alkali metal and ammonia may be used in combination.
- (Si0 2 / (a 2 0 + B) (a: sometimes abbreviated as NH 3) simply "molar ratio" a: Al force Li metal, B.
- Kei iodine concentration of oxide equivalent, S i 0 2 concentration (B) is 6.8 to 30 wt%, preferably 8 to 26, further favored properly 14-22 It is.
- Such an alkali silicate aqueous solution used in the present invention has a silicon concentration approximately equal to that of a silicate sol or colloidal silica.
- the aqueous alkali silicate solution of the present invention preferably satisfies at least one of the following properties (C) to (F) in addition to the properties (A) and (B). That is, the anion activity is evaluated by the zeta potential.
- the zeta potential (C) is preferably 1-40 MV80.
- MV more preferably one 50 MV 80 MV, particularly preferably one 58 MV to one 80 MV
- Zeta potential is a parameter involved in particle dispersion and aggregation. If the same type of particles are dispersed in the liquid, each particle will have the same charge. And the higher the charge, the more they repel each other and stay stable for a long time without agglomeration. Conversely, if there is no charge, or if substances with the opposite sign are mixed, the particles immediately aggregate and precipitate. The charge of these particles also depends on the pH of the solution.
- the zirconium silicate aqueous solution has a high zeo potential, and has a high zeo potential activity because it contains a large number of angiogen molecules.
- anionic molecules contained in this aqueous solution of silica silicate are extremely small and are smaller than colloids such as colloidal silica. Therefore, in the present invention, even if anionic particles are present, no sol-like behavior is observed, and the particles can be practically handled as a solution. This is supported by the transmittance described later.
- the anionic particles Although the form of existence of the anionic particles is not always clear, it is thought that they exist as ultrafine particles of the order of nanometers having SiO— on the surface.
- various structures of silicates are known as described below, the aqueous solutions of silicates used in the present invention are monofunctional or monofunctional and belong to linear polymers or polycyclic silicates. It is thought that trifunctional Q3x, trifunctional Q3y, and tetrafunctional Q4 are contained in large amounts.
- the zeta potential is about 25 MV to 38 MV.
- water glass contains aion, the zeta potential is about 14 MV to 140 MV due to the small number of highly functional anion portions.
- the chemical shift of the peak area at 100 to 120 ppm under the same conditions is the chemical shift of water glass measured at 29 Si-R under the same conditions.
- the silicate solution of the present invention there are few mono- and bi-functional compounds belonging to linear polymers or polycyclic silicates, and 3 functional Q3x, trifunctional Q3y, It can be seen that a large amount of tetrafunctional Q4 is contained.
- the peak area is calculated from the area surrounded by the vertical axis at 100 ppm, the vertical axis at 120 ppm, and the spectrum curve after baseline correction.
- the aqueous alkali silicate solution used in the present invention preferably has a transmittance (E) in the wavelength region of 1000 to 200 nm in the spectrophotometric method of 90 to 100%, and more preferably 95 to 100%.
- E transmittance
- the transmittance of ordinary water glass is the same as above, but the transmittance of colloidal force is extremely low at 10 to less than 200 to 380 nm and is 10 to 0%. As a result, it is found that the aqueous alkali silicate solution has characteristics close to those of water glass.
- the aqueous alkali silicate solution used in the present invention preferably has an electric conductivity (F) of from 2 l to 35 mS / cm, more preferably 2.:! 1616 ms, particularly preferably 5.0 to 11.0 ms / cm.
- F electric conductivity
- This alkali silicate aqueous solution is a highly desalted solution because of its high electrical conductivity, and is a solution that is kept stable without agglomeration by aluminous silicate.
- the aqueous alkali silicate solution used in the present invention has intermediate properties between water glass and colloidal silica, has a high molar ratio and a high silicon content, and has a high degree of anion activity.
- the method for producing the aqueous alkali silicate solution as described above is not particularly limited. However, the present inventors efficiently and stably produce a new aqueous solution of alkali silicate by the first and second production methods described below. Have found it possible.
- Silicic acid and Alkari in aqueous solution of raw silica (Alli is the same as above)
- the molar ratio (Si0 2 / (A 2 0 + B) (A: alkali metal, B:. NH 3) is less than 4, preferably from 1.5 to 4 0, more preferably less than 2 8-3. . about 5 is suitable also oxides concentration in terms of Kei element (S i 0 2 concentration) from 2.0 to 12 0 weight percent, preferably 3. 0:. 12.0 by weight%, more preferably A suitable amount is about 4.5 to 12.0% by weight.
- the electrodialysis device has a cation exchange membrane 1 and an anion exchange membrane 2 arranged side by side between an anode and a cathode, and alternately forms a desalination chamber 3 and a concentration chamber 4.
- a conventionally known device can be used without any particular limitation. That is, the electrodes, the ion-exchange membrane, and the members that require such power constituting such an electrodialysis apparatus are not particularly limited, and known ones are used.
- a cation exchange group is generally a sulfonic acid group
- an anion exchange group is a quaternary ammonium group
- a styrene dibutylbenzene copolymer material is formed using a reinforcing material.
- Hydrocarbon-based cation exchange membranes and anion exchange membranes are also used industrially.
- a fluorinated ion-exchange membrane in which the material of the ion exchange membrane is made of a fluorinated polymer can also be used.
- the electrodialysis apparatus it is desirable to use an ion-exchange membrane that is resistant to alkaline force, because the raw material alkali aqueous silicate solution used for electrodialysis is alkaline and the caustic alkali is concentrated (generated).
- an aqueous solution of raw material alkali silicate is supplied to the desalting chamber 3 of the electrodialysis apparatus, and water or a dilute aqueous caustic solution is supplied to the concentrating chamber 4 to perform electrodialysis.
- alkali metal ions for example, Na +
- hydroxide ions OH—
- the operating conditions of the electrodialysis device are as follows: the size of the device, the concentration of the raw material silicate solution.
- the voltage is adjusted so as to be constant at 0.6 VZ pair, and it is appropriate to supply the raw material aluminum silicate aqueous solution to the desalting chamber at a rate of about 3.1 littorno.
- Water or dilute old alkaline solution is supplied to the enrichment chamber at a rate of about 3.1 liters Z minutes.
- an aqueous solution of alkali silicate (a dealkalized solution) having a reduced concentration is obtained by the desalting.
- the force S is desirably adjusted to 0 to 30, more preferably 9 to 26, and particularly preferably about 12 to 21.
- Electrodialysis conditions by particularly selecting the electrical conductivity appropriate, it is possible to adjust the molar balance of the alkali silicate aqueous solution (Si0 2 / (A 2 0 + B)).
- Si0 2 / (A 2 0 + B) when the electric conductivity is high, Si0 2 / if (A 2 0 + B) is lowered, also the low electrical conductivity, Si0 2 / (A 2 0 + B) becomes higher tendency There is.
- the use of a relatively high Keimoto concentration, Quai I oxygen partial concentration of the resulting silicate al Chikarari aqueous solution, S i 0 2 conversion Is preferably 6.8 to 12% by weight, and more preferably about 6.8 to 9% by weight.
- a high molar ratio aqueous solution of active alkali silicate according to the present invention which satisfies the characteristics (A) and (B) as described above, and more preferably (C) to (F), is obtained.
- a caustic aqueous solution is obtained from the concentration chamber 4.
- silicic acid migrates through the ion-exchange membrane during the dialysis process, and a small amount of about 0.1 to 1% by weight of silicic acid may be mixed in, but the mixing of a small amount of silicic acid does not matter.
- an alkali source for preparing an aqueous solution of an alkali silicate which is a starting material for the production of a silica sol, for example, it can be recycled as it is.
- the concentration of the alkaline solution can be reduced.
- a reverse osmosis membrane method may be used to further concentrate the dealkalized solution (aqueous solution of alkali silicate) obtained from the desalting chamber.
- the reverse osmosis membrane preferably has a molecular weight cut-off of 100 to 20,000, more preferably 100 to 1,000, and particularly preferably 100 to 800.
- water is removed without evaporating water and energy consumption is reduced, and the recovery of valuable resources (here, silica silicate) is concentrated stably and efficiently in solution. The point that can be raised.
- the ultrafiltration membrane method has a drawback of removing effective and highly active silicate anion which is developed by electrodialysis.
- the reverse osmosis membrane method in which an organic thin film that is stable in a strong alkaline aqueous solution is three-dimensionally constructed as a module with excellent volumetric efficiency, is energy-saving, compact, easily controls conditions, and transforms valuable resources without applying heat. It is a method that can be concentrated and recovered without causing any waste.
- the pressure at the time of reverse osmosis is preferably 4.0 MPa or less (at the entrance of the reverse osmosis module), and more preferably it is preferably adjusted to about 3.2 to 3.8 MPa.
- silicate alkali aqueous solution obtained through the electrodialysis can be further concentrated, the Kei oxygen partial concentration, preferably in S i 0 2 conversion 3.0 It can be concentrated to about 30.0% by weight, more preferably about 6.5 to 30% by weight.
- the second manufacturing method of the alkali silicate aqueous solution used in the present invention the molar ratio (Si0 2 / A 2 0) less than 4 feedstock silicate al Chikarari aqueous Te use Rere electrodialysis device de Anore Chikararishi,
- the solution is characterized in that the solution is concentrated by a reverse osmosis membrane method.
- Silicate and Al force Li in the starting alkali silicate aqueous solution Al force Li is as defined above
- the molar ratio (Si0 2 / (A 2 0 + B)) 1 less than 4 preferably less than 1.5 to 4.0, further good Mashiku 2.8 to 3.5 is appropriate.
- the Sani ⁇ concentration calculated Kei element (S i 0 2 concentration) is not particularly limited, 2.0 to 12.0 wt%, preferably from 3.0 to 12.0 by weight%, more preferably suitably about 4.5 to 12.0 wt% Duru.
- the apparatus and conditions used for electrodialysis are the same as those in the first production method.
- Desalting chamber 3 forces et obtained, reduced lean silicate al Chikarari aqueous Al force Li concentration (de-alkali solution), while increasing the molar ratio (Si0 2 / (A 2 0 + B)), and silica solid to suppress the solid content of the precipitate, the molar ratio (Si0 2 / (a 2 0 + B)) , it preferably 4.0 to 30, more preferably 9 to 26, particularly preferably kept adjusted to about 12 to 21 Force S desirable.
- Kei oxygen partial concentration of the dealkalized solution in the second manufacturing method is preferably in the S i 0 2 conversion 3.0 ⁇ ; L0.0 wt%, more preferably by adjusting the time about 4.0 to 8.0 wt% It is desirable to keep.
- the desalting solution obtained from the desalting chamber is concentrated by a reverse osmosis membrane method.
- Reverse osmosis is performed as described above.
- the alkali concentration (in terms of oxide) of the high-molar-ratio aqueous alkali silicate solution obtained by the present invention can be reduced to 0.4% by weight or less, but if necessary, contact treatment with a positive ion exchange resin is required. By doing so, the alkali concentration can be further reduced.
- An exchange resin is used without any particular limitation.
- the contact treatment with the ion exchange resin may be performed after electrodialysis or after reverse osmosis.
- Desalting proceeds in an alkaline solution by directly contacting a high molar ratio aqueous solution of active silica silicate with a cation exchange membrane by electrodialysis or reverse osmosis membrane method. Further molar ratio (Si0 2 / (a 2 0 + B)) may be high rather adjusted.
- Contact with the cation exchange resin can, for example, in a column tower 200 to 1000 cm 3, packed with a cation exchange resin of 240 ⁇ 530Cm 3, washed with water PH5.0 ⁇ 6- 0, flow rate 4 ⁇ 25ml / / sec This is carried out by passing an aqueous solution of silica silicate.
- the photocatalytic compound used in the present invention may be a compound that itself has a photocatalytic action, or may be a photocatalyst precursor that can be converted to a photocatalyst through a required process.
- the photocatalyst usable in the present invention T i 0 2, Z n 0, S r T i 0 3, Cd S, C dO, I nP, I n 2 0 3, B a T i 0 3, K 2 n b 0 3, F e 2 0 3, T a 2 0 5 ⁇ W0 3, B i 2 0 3 , n i 0, C u 2 0, S i 0 2, Mo S 2, Mo S 3, I n P b, Ru0 2, C e0 2 ⁇ Ga P, Z r 0 2, S n 0 2, V 2 0 5, KT a 0 3% Nb 2 0 5, C u 0, M o 0 3, C r 2 0 3, GaAs, S i, C d S e, CdF e0 3, but R a Rh0 3, and the like, powder or sol-like anatase type titanium dioxide T io 2 among these, preferred.
- the particle size of such a photocatalyst is preferably from 1 to 20 nm, particularly preferably from 5 to 15 nm.
- the sol-form anatase-type titanium oxide that is, anatase-type titanium oxide sol is prepared by heating an amorphous titanium peroxide sol as described below at a temperature of 10 ° C or more.
- the properties of the anatase-type titanium oxide sol slightly change depending on the heating temperature and the heating time.
- the anatase-type titanium oxide sol produced by treatment at 100 ° C. for 6 hours has a pH of It has a particle size of 7.5 to 9.5 and a particle size of 8 to 2 O nm, and its appearance is a yellow suspension liquid.
- This anatase-type titanium oxide sol is stable even when stored at room temperature for a long period of time, but when it is mixed with an acid or an aqueous metal solution, precipitation may occur. Properties and acid resistance may be impaired.
- Suitable photocatalysts include, in addition to the above anatase-type titanium oxide sol, powdered titanium dioxide, for example, commercially available “ST-01” (Ishihara Sangyo Co., Ltd., hS) and “ST-31” (Ishihara Sangyo (Made by Co., Ltd.) can also be used.
- ST-01 Ishihara Sangyo Co., Ltd., hS
- ST-31 Ishihara Sangyo (Made by Co., Ltd.
- any binder can be used as long as it does not deteriorate due to the photocatalytic action and does not decrease the photocatalytic function, but it has excellent adhesion at room temperature as described below. It is desirable to use an amorphous titanium peroxytitanium sol.
- the photocatalytic compound (2) is preferably used in an amount of 95 to 95 based on 100 parts by weight of the solid content of the aqueous solution of alkali silicate (1). It is used in a proportion of 100 parts by weight, more preferably 95 to 400 parts by weight.
- the film-forming aid (3) is used as needed to improve the applicability and the coating adhesion of the photocatalytic coating composition of the present invention.
- Such coalescents, amorphous type titanium oxide can also act as a precursor of the photocatalyst described above, for example the use of titanium peroxide amorphous type T i 0 3 or amorphous type titanium oxide emissions T io 2 Can be.
- a particularly preferred amorphous titanium peroxide sol can be produced, for example, as follows.
- titanium salt solution such as titanium chloride T i C 1 4, adding good UNA hydroxyl Ihiarukari aqueous ammonia or sodium hydroxide. Pale bluish white occurring, amorphous titanium hydroxide T i (OH) 4, also known as ortho-titanic acid H 4 T i 0 4, after washing. Separating the Mizusani ⁇ titanium, treatment with aqueous hydrogen peroxide Thus, an amorphous titanium peroxide solution of the present invention is obtained.
- This amorphous titanium peroxide sol has a pH of 6.0 to 7.0, a particle size of 8 to 20 nm, and is a yellow transparent liquid, and is stable even when stored at room temperature for a long period of time.
- the sol concentration is usually adjusted to 1.40 to 1.60%, but the concentration can be adjusted as needed.If used at low concentrations, dilute with distilled water, etc. To use.
- this amorphous titanium peroxide sol is in an amorphous state at room temperature, has not yet crystallized into anatase titanium oxide, and has excellent adhesion, high film-forming properties, and a uniform and flat thin film.
- the dried film has the property of being insoluble in water and the property of being stable to a photocatalyst.
- amorphous titanium oxide used in the present invention those in the form of fine powder or sol in which this fine powder is suspended and dispersed in a solvent such as water or alcohol are known.
- a fine powder of amorphous titanium oxide having no photocatalytic function it is mixed with a binder such as a thermosetting water-soluble resin for coating.
- the amorphous titanium oxide is used as a film-forming auxiliary (3).
- an anionic surfactant or a modified silicone-based surfactant can be used.
- these film-forming assistants can be used in combination of two or more kinds.
- the film-forming auxiliary (3) is preferably 95 to 9500 parts by weight, more preferably 95 to 9500 parts by weight, based on 100 parts by weight of the solid content of the aqueous alkali silicate solution (1). Is used in a proportion of 95 to 4000 parts by weight.
- Other ingredients are used in a proportion of 95 to 4000 parts by weight.
- raw coating agent composition of the present invention in addition to the above components, if necessary, in addition to silicon dioxide such as colloidal silica, siloxane compounds such as silicone and organopolysiloxane, and water glass are added. You may.
- the auxiliary additive metal Pt, Ag, Rh, Ru, Nb, Cu, Sn, Ni, Pd, Os, Ir, Zn, Cd, Fe, Se, Y, etc.
- the auxiliary additive metal Pt, Ag, Rh, Ru, Nb, Cu, Sn, Ni, Pd, Os, Ir, Zn, Cd, Fe, Se, Y, etc.
- the photocatalytic coating agent composition of the present invention contains, as necessary, a dielectric ceramic material or a conductive ceramic material having an ultraviolet blocking function or an electrostatic discharge preventing function, together with amorphous titanium oxide and silicon oxide. Can be included.
- Photocatalytic coating agent Preferably 95 to 9500 parts by weight, more preferably 95 to 4000 parts by weight based on 100 parts by weight of the solid content of It is.
- the photocatalytic coating agent composition of the present invention is obtained by mixing the above components (1) and (2), and if necessary, the component (3) and other components in a mixer. At the time of mixing, a diluent such as water can also be used. The use of a diluent may improve coatability in some cases.
- the resulting photocatalytic coating agent composition preferably has the following composition, although it depends on the mixing ratio of the above components.
- the photocatalytic coating agent composition is preferably
- the molar ratio of Kei element and Al force Li (Si0 2 / (A 2 0 + B) (A: Al force Li metal, B: NH 3) is 4-3 0, preferably 1 5-3 0, more preferably It is preferably about 20 to 30 and particularly preferably about 25 to 30.
- Ti0 2 / Si0 2 molar ratio is from 0.7 to 7 0, preferably 3 to 7 about 0.
- the content of the film-forming auxiliary (3) is preferably about 0.05 to 2% by weight, and more preferably about 0.01 to 2% by weight.
- the balance is diluent, usually water. Further, the photocatalytic coating agent composition of the present invention may be appropriately diluted before use as required before the coating operation.
- Such a photocatalytic coating agent composition according to the present invention includes various materials such as inorganic materials such as ceramics and glass, organic materials such as organic polymer resins, rubber, wood, and paper, and metal materials such as aluminum and steel. Can be used for the substrate.
- the size and shape are not limited, and may be plate-like, needle-like, honeycomb-like, fiber-like, filter-sheet-like, bead-like, foam-like, or a combination of these.
- the coating method of the photocatalytic coating agent composition of the present invention includes a method of forming a thin film by a method such as spray coating, diving, or spin coating.
- the thickness of the coating thin film (layer) is generally 0.1 to 3 m, preferably 1 to 3 m, which is determined by the thickness which can be achieved for the purpose of imparting hydrophilicity and the film forming performance such as a binder. About 3 ⁇ m.
- the photocatalytic coating agent composition of the present invention can be used to prevent fogging of showcase glass, bathroom mirrors, spectacle lenses, automobile window glasses and bodies, reduce the irritating pain when injecting injections into the body, prevent dew condensation on window glasses and skylights It can be used to prevent contamination of building materials such as silicone sealing materials such as between a bathroom and unit pass, between an outer wall and a window frame, between tiles and tiles, and oil-based caulking materials. Since contaminant organic substances such as dust, oil, and dirt attached to the surface of a substrate made of an inorganic material such as glass and tile are decomposed by photocatalysis, they can be used for exterior building materials and the like.
- a photocatalytic coating composition capable of adjusting the refractive index, the coating density, and the hydrophilicity, and improving the coating strength and the adhesion of the film.
- the specifications of the electrodialysis device and the reverse osmosis device used are as follows.
- Electrodialysis machine manufactured by Tokuyama Corporation
- Cation exchange membrane (1 or 2) CMB (trade name), manufactured by Tokuyama Corporation
- Electrode material Ni plate
- Reverse osmosis membrane Mini spiral membrane (Synthetic composite membrane with resistance to water: molecular weight cut off 200, membrane area 1.6m 2 , 2.OX4OL)
- the thus obtained aqueous solution of the raw material silica silicate was supplied to the desalting chamber of the electrodialyzer at the time t, and the concentrated caustic soda solution was supplied.
- the dealkalized solution obtained from the desalting chamber is temperature-controlled to 30 to 40 ° C and supplied to the concentration tank of the reverse osmosis unit.
- the inlet flow rate is 10 LZ
- the average pressure is 3.0 MPa
- the flux (30 ° C )
- the solution was concentrated at 35 to 28 kg / m 2 hr to obtain a high molar sodium silicate aqueous solution having the following composition and characteristics.
- FIG. 2 also shows the 29 Si-NMR spectrum of the following water glass colloidal silica measured under the same conditions.
- FIG. 3 shows the results of UV-visible absorption spectroscopy.
- FIG. 3 shows the results of UV-visible absorption spectroscopy analysis of colloidal silica (SM manufactured by DuPont) and the following colloidal silica measured under the same conditions.
- the measuring methods and measuring devices for each property value are as follows.
- the components shown in Table 1 were mixed with 100 parts by weight (based on solid content) of the aqueous sodium silicate solution prepared in Production Example 1 above to obtain a photocatalytic coating agent composition.
- the obtained coating agent composition was adhered by diving to a glass substrate of 50 ⁇ 200 mm (TLC glass plate manufactured by Mutual Life Science Glass Co., Ltd.) to prepare a glass substrate with a coating.
- the coating strength, hydrophilicity, and peel strength of the coating were evaluated as follows.
- Coating strength Scratch method based on empirical scratch values described in JIS K 5400
- Example 2 The same operation as in Example 1 was performed except that colloidal silica (HS-40 manufactured by DuPont) was used instead of the aqueous sodium silicate solution. Table 1 shows the results. Comparative Example 2
- Example 1 The same operation as in Example 1 was performed except that water glass (diluted No. 3 sodium silicate (manufactured by Tosoh Sangyo Co., Ltd.)) was used instead of the aqueous sodium silicate solution. The results are shown in Table 1. Comparative Example 3
- Example 1 The same operation as in Example 1 was performed except that the aqueous sodium silicate solution was not used. Table 1 shows the results.
- Example 100 4000 1500 200 194 200 4H 15 ° No peeling No abnormality
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Description
Claims
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US10/474,938 US7297206B2 (en) | 2001-04-17 | 2002-04-09 | Coating material composition having photocatalytic activity |
EP02714559A EP1394224A1 (en) | 2001-04-17 | 2002-04-09 | Coating material composition having photocatalytic activity |
KR1020037013402A KR100609393B1 (ko) | 2001-04-17 | 2002-04-09 | 광촉매성 코팅제 조성물 |
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EP (1) | EP1394224A1 (ja) |
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EP1559753A3 (en) * | 2004-01-22 | 2005-09-07 | Ezio Barucco | Antibacterial potassium-silicate-based paint containing titanium dioxide in anatase form. |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE365700T1 (de) * | 2002-09-25 | 2007-07-15 | Koninkl Philips Electronics Nv | Verfahren zur herstellung von lösungen zur verwendung als beschichtung in photokatalytischen und transparenten filmen |
KR20060034098A (ko) * | 2004-10-18 | 2006-04-21 | 삼성전자주식회사 | 광주사장치 및 이를 채용한 화상형성장치 |
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US20090162560A1 (en) * | 2007-12-21 | 2009-06-25 | Envont L.L.C. | Hybrid vehicle systems |
US20090163656A1 (en) * | 2007-12-21 | 2009-06-25 | Envont Llc | Hybrid vehicle systems |
US20090163647A1 (en) * | 2007-12-21 | 2009-06-25 | Envont Llc | Hybrid metal oxides |
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CN106609063A (zh) * | 2015-10-23 | 2017-05-03 | 江苏冠军涂料科技集团有限公司 | 一种新型的纳米SiO2改性内墙功能涂料 |
KR101659755B1 (ko) | 2016-01-15 | 2016-09-26 | 이엔에프씨 주식회사 | 산소반응 촉매조성물 및 그 제조방법 |
KR101686014B1 (ko) * | 2016-02-16 | 2016-12-13 | 주식회사 오일시티 | 산소반응 촉매조성물 및 그 제조방법 |
KR20240092322A (ko) | 2022-12-14 | 2024-06-24 | (주) 유니플라텍 | 가시광 감응형 광촉매 조성물 및 이를 포함하는 가시광 감응형 광촉매 필름 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10237353A (ja) * | 1997-02-24 | 1998-09-08 | Tao:Kk | 親水性コーティング剤及び表面親水性基体 |
JP2000044807A (ja) * | 1998-05-25 | 2000-02-15 | Chuo Rika Kogyo Corp | 樹脂組成物及びその製造方法並びに塗装物 |
JP2000044224A (ja) * | 1998-07-31 | 2000-02-15 | Touso Sangyo Kk | 珪酸ゾルの製造方法および珪酸ゾルの使用方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1148950A (en) | 1966-12-23 | 1969-04-16 | Monsanto Chemicals | Production of colloidal compositions |
US3721574A (en) * | 1968-08-06 | 1973-03-20 | R Schneider | Silicate coatings compositions |
US3969266A (en) | 1971-06-23 | 1976-07-13 | E. I. Du Pont De Nemours And Company | Microporous membrane process for making concentrated silica sols |
JPS5144138B2 (ja) * | 1972-08-21 | 1976-11-26 | ||
US3893864A (en) * | 1973-12-20 | 1975-07-08 | Exxon Research Engineering Co | Quick-curing water resistant silica-alkali metal coatings and processes therefor |
DE4413996C1 (de) * | 1994-04-22 | 1995-07-20 | Braas Gmbh | Dachpfanne mit einer Silikatbeschichtung |
US5916947A (en) * | 1994-12-02 | 1999-06-29 | Cape Cod Research, Inc. | Zinc oxide photoactive antifoulant material |
JPH08318166A (ja) * | 1995-05-25 | 1996-12-03 | Agency Of Ind Science & Technol | 固定化光触媒及び光触媒の固定化方法 |
US6569520B1 (en) * | 2000-03-21 | 2003-05-27 | 3M Innovative Properties Company | Photocatalytic composition and method for preventing algae growth on building materials |
-
2002
- 2002-04-09 US US10/474,938 patent/US7297206B2/en not_active Expired - Lifetime
- 2002-04-09 KR KR1020037013402A patent/KR100609393B1/ko active IP Right Grant
- 2002-04-09 EP EP02714559A patent/EP1394224A1/en not_active Withdrawn
- 2002-04-09 WO PCT/JP2002/003536 patent/WO2002085990A1/ja not_active Application Discontinuation
- 2002-04-12 TW TW091107527A patent/TWI270567B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10237353A (ja) * | 1997-02-24 | 1998-09-08 | Tao:Kk | 親水性コーティング剤及び表面親水性基体 |
JP2000044807A (ja) * | 1998-05-25 | 2000-02-15 | Chuo Rika Kogyo Corp | 樹脂組成物及びその製造方法並びに塗装物 |
JP2000044224A (ja) * | 1998-07-31 | 2000-02-15 | Touso Sangyo Kk | 珪酸ゾルの製造方法および珪酸ゾルの使用方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1559753A3 (en) * | 2004-01-22 | 2005-09-07 | Ezio Barucco | Antibacterial potassium-silicate-based paint containing titanium dioxide in anatase form. |
Also Published As
Publication number | Publication date |
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US7297206B2 (en) | 2007-11-20 |
TWI270567B (en) | 2007-01-11 |
EP1394224A1 (en) | 2004-03-03 |
KR20030085108A (ko) | 2003-11-01 |
KR100609393B1 (ko) | 2006-08-04 |
US20040116577A1 (en) | 2004-06-17 |
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