EP3319905A1 - Metalloxid enthaltende dispersion mit hoher salzstabilität - Google Patents
Metalloxid enthaltende dispersion mit hoher salzstabilitätInfo
- Publication number
- EP3319905A1 EP3319905A1 EP16733468.9A EP16733468A EP3319905A1 EP 3319905 A1 EP3319905 A1 EP 3319905A1 EP 16733468 A EP16733468 A EP 16733468A EP 3319905 A1 EP3319905 A1 EP 3319905A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- atom
- och
- aqueous dispersion
- metal oxide
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006185 dispersion Substances 0.000 title claims abstract description 67
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 37
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 37
- 150000003839 salts Chemical class 0.000 title description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000000843 powder Substances 0.000 claims abstract description 40
- 230000004048 modification Effects 0.000 claims abstract description 30
- 238000012986 modification Methods 0.000 claims abstract description 30
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 11
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 11
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 11
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 8
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 42
- 239000002245 particle Substances 0.000 claims description 34
- 229910052710 silicon Inorganic materials 0.000 claims description 27
- 125000004429 atom Chemical group 0.000 claims description 25
- 239000004215 Carbon black (E152) Substances 0.000 claims description 22
- 229930195733 hydrocarbon Natural products 0.000 claims description 22
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 125000003545 alkoxy group Chemical group 0.000 claims description 11
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 9
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 150000001721 carbon Chemical group 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 230000001698 pyrogenic effect Effects 0.000 claims description 7
- -1 WO 3 Inorganic materials 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 6
- 150000002736 metal compounds Chemical class 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 230000007062 hydrolysis Effects 0.000 claims description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims description 5
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 125000005595 acetylacetonate group Chemical group 0.000 claims description 4
- 150000004703 alkoxides Chemical class 0.000 claims description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003125 aqueous solvent Substances 0.000 claims description 4
- 239000003599 detergent Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 125000005842 heteroatom Chemical group 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 239000002537 cosmetic Substances 0.000 claims description 2
- 238000004851 dishwashing Methods 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 239000000825 pharmaceutical preparation Substances 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims 5
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical class [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims 2
- 239000003086 colorant Substances 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 238000010422 painting Methods 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 abstract description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 2
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 abstract 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 abstract 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 abstract 1
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten(VI) oxide Inorganic materials O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
- 238000003756 stirring Methods 0.000 description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 13
- 239000000243 solution Substances 0.000 description 8
- 229910002012 Aerosil® Inorganic materials 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 150000004820 halides Chemical group 0.000 description 6
- 239000008119 colloidal silica Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 229920002274 Nalgene Polymers 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000001420 photoelectron spectroscopy Methods 0.000 description 2
- 238000011197 physicochemical method Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004876 x-ray fluorescence Methods 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229910003455 mixed metal oxide Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000008342 pharmaceutical dispersion Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012088 reference solution Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000012430 stability testing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000001370 static light scattering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
- C09C1/405—Compounds of aluminium containing combined silica, e.g. mica
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/044—Suspensions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/26—Aluminium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
- C01B33/1415—Preparation of hydrosols or aqueous dispersions by suspending finely divided silica in water
- C01B33/1417—Preparation of hydrosols or aqueous dispersions by suspending finely divided silica in water an aqueous dispersion being obtained
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/146—After-treatment of sols
- C01B33/149—Coating
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
- C01B33/159—Coating or hydrophobisation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/22—Compounds of iron
- C09C1/24—Oxides of iron
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
- C09C1/30—Silicic acid
- C09C1/3045—Treatment with inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
- C09C1/30—Silicic acid
- C09C1/3045—Treatment with inorganic compounds
- C09C1/3054—Coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
- C09C1/30—Silicic acid
- C09C1/3063—Treatment with low-molecular organic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
- C09C1/30—Silicic acid
- C09C1/3081—Treatment with organo-silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
- C09C1/30—Silicic acid
- C09C1/309—Combinations of treatments provided for in groups C09C1/3009 - C09C1/3081
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3653—Treatment with inorganic compounds
- C09C1/3661—Coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3684—Treatment with organo-silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3692—Combinations of treatments provided for in groups C09C1/3615 - C09C1/3684
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
- C09C1/407—Aluminium oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
-
- 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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/001—Pigment pastes, e.g. for mixing in paints in aqueous medium
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- 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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
- C09D17/007—Metal oxide
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
- C11D17/0013—Liquid compositions with insoluble particles in suspension
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/20—Water-insoluble oxides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/42—Coatings with pigments characterised by the pigments at least partly organic
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
Definitions
- the invention relates to metal oxide-containing dispersions having high salt stability, the
- the improvement of the stability of aqueous silica dispersion is the subject of research. Usually, it is attempted to protect the dispersion from sedimentation and reagglomeration via a suitable surface modification of the silica particles.
- a stable pharmaceutical dispersion which contains silicon dioxide particles surface-modified with polyethylene glycols.
- the latter can be obtained, for example, by adding a colloidal stabilized with ammonia
- US2002172827 is concerned, inter alia, with the production of redispersible, nanoscale silicon dioxide particles. This is a negatively charged silica sol with a
- Coated aluminum oxide hereinafter is used as a surface-modifying agent
- WO2004035474 claims a process for producing a stable, aqueous dispersion obtained by mixing silanized, colloidal silica particles with an organic binder.
- silanizing agent is used, for example
- the organic binder may be a polyethylene glycol.
- WO03 / 106339 describes a precipitated silica which has a BET surface area of 150-400 m 2 / g, a CTAB surface area of 140-350 m 2 / g and an Al 2 O 3 content of 0.2-5 % By weight.
- This silica can be modified with a variety of silanes and result in hydrophilic as well as hydrophobic products. Also the ratio silane too
- Precipitated silica can be varied over wide limits, namely 0.5 to 50 parts of silane, based on 100 parts of precipitated silica.
- the reaction may be in the dispersion of
- WO02 / 22745 discloses a method for priming steel which employs an aqueous alumina-silica sol with 0.05-2.0% by weight of alumina.
- the alumina-silica sol may contain a silane coupling agent containing alkoxysilane groups and an organic radical having a functional group such as an amino, epoxide or isocyanate.
- WO2010 / 042672 discloses a coating composition for thermoplastic and thermosetting substrates comprising an aqueous dispersion having a pH of less than 7.5. This contains surface-modified silica nanoparticles having an average particle diameter of 40 nm or less, an alkoxysilane oligomer and a silane coupling agent.
- Suitable surface modifiers are those which have a radical which can react with the silanol groups on the silica surface, and a hydrophilic radical, for example an acid radical, an ammonium radical, a
- the invention relates to an aqueous dispersion containing a hydrophilic
- Metal oxide powder comprising a metal oxide and a surface modification of the metal oxide, wherein
- the metal oxide is selected from the group consisting of Al 2 O 3, Ce 2 O, Fe 2 O 3, Fe 3 SO 4, Sb 2 H 3, SiO 2, TiO 2, WO 3, ZrO 2, and mixed oxides thereof and
- b2) are at least partially bonded via a carbon atom to a hydrocarbon radical
- the metal oxide can be obtained from pyrogenic processes.
- metal compounds are reacted in a flame generated by the reaction of hydrogen and oxygen.
- the powders thus obtained are referred to as "pyrogenic” or “fumed".
- first highly dispersed primary particles are formed, which grow together to aggregates in the further course of the reaction.
- the aggregate diameter of these powders are usually in the range of 0.2 to 1 ⁇ .
- Mixed oxide is to be understood as an intimate mixture of the mixed oxide components metal Mi and metal M2 on the atomic level, in which the particles may also have Mi-O-M2 bonds.
- Surface-modified means that the silica carries on its surface groups which as far as possible retain the hydrophilic properties of the particles which the unmodified silica has. As a result, the aqueous dispersion remains stable. Stable should means that there are no significant reagglomeration and therefore no sedimentation. Hydrophobed particles would be reagglomerated and separated in an aqueous solution in a very short time.
- This stability also applies to aqueous solutions with a high salt concentration and at elevated temperatures.
- a 0.5 weight percent dispersion in a seawater simulating reference solution is stable for at least one week at a temperature of 90 ° C. Stability testing is performed in 3% NaCl solution.
- a suitable analytical method for the detection of surface elements and their bonds is X-ray-induced photoelectron spectroscopy (XPS). By gradual sputtering, a depth profile can be generated. Additional information about the composition of the surface can be determined by energy dispersive X-radiation (TEM-EDX).
- the composition of the total particle may be determined by chemical or physico-chemical methods, e.g. X-ray fluorescence analysis, to be determined Good salt stability results are obtained with aluminum-containing mixed oxides.
- Particularly preferred are aluminum-silicon mixed oxides, especially those in which the weight ratio Al2O3 / S1O2 in the surface-modified metal oxide powder is 0, 1: 99.9 - 5:95, in particular 0.2: 99.8 - 3:97.
- the weight ratio AI2O3 / S1O2 at the surface may be greater than, less than or equal to the weight ratio in the total particle, "ttl.” Corresponds to the weight ratio in
- Total particles Preferred is a ratio (Al 2 O 3 SiO 2) of surface area / (Al 2 O 3 SiO 2) tti of 0.1 to 10.
- the weight ratio on the surface can be determined, for example, by X-ray induced
- Photoelectron spectroscopy (XPS) of the powder can be determined.
- the weight ratio in the total particle can be determined by chemical or physico-chemical methods, e.g.
- the proportion of water is preferably 50-90% by weight and, based on surface-modified metal oxide powder, preferably 10-50% by weight. Depending on the intended further use, the proportion of surface-modified metal oxide powder can be further reduced.
- the liquid phase may also contain small amounts of alcohol, such as methanol, ethanol, propanol or butanol. The proportion of alcohol is usually less than 1 wt .-%, based on the dispersion.
- the carbon content of the surface-modified metal oxide powder is preferably 3 to 25% by weight.
- the pH of the liquid phase of the dispersion is preferably 8-12, more preferably 9-1.
- the surface-modified metal oxide powder can be present in the form of isolated individual particles and / or in the form of aggregated particles.
- the mean particle diameter describes the dimension of the aggregate.
- Light scattering to determine particle size distributions are determined in dispersions.
- the surface-modified metal oxide present in the dispersion according to the invention is inter alia characterized in that the surface modification comprises a hydrocarbon radical which is bonded to a silicon atom via a carbon atom.
- the hydrocarbon radical should be selected such that the surface-modified mixed oxide has hydrophilic properties in the dispersion. This is for example based on the number of carbon atoms of the
- the hydrocarbon radical is preferably interrupted by one or more heteroatoms. Particularly preferred is O or N as
- Hetero atom Preferably, a surface modification selected from the group consisting of Si (CH 2) n-Y m -R, wherein Si is the Si atom which is bonded via a carbon atom to a hydrocarbon radical, and
- R is a group which does not impart hydrophobic properties, and is preferred
- R corresponds to the abovementioned radicals, but without -H, -CH 3 , -C 2 H 5.
- R ⁇ R 2 , R 3 , R 4 , R 5 , R 6 independently of one another H or CH 3 , - NHCH 2 CH 2 O-, -NH (CH 2 ) 2 NH (CH 2 ) 2 -, -NH (CH 2 ) 2 NH (CH 2 ) 2 - or a mixture of the aforementioned R and Y radicals. It is also conceivable that Y comprises branched polyethylene glycols.
- the dispersion of the invention may contain small amounts, less than 100 ppm, of conventional dispersants.
- the presence of dispersants is within the scope of
- the stabilizing effect of the dispersion according to the invention is due solely to the surface-modified metal oxide powder.
- Another object of the invention is a process for the preparation of the aqueous dispersion in which a metal oxide powder selected from the group consisting of ⁇ 2, ZrCh, S1O2, Al2O3, Fe2Ü3, Fe3Ü4, Sb2Ü3, WO3, CeCh and mixed oxides thereof, which at the surface of the Having particles of hydroxyl groups, dispersed in an aqueous solvent and subsequently adding a surface modifying agent, causing the mixture to react and optionally separating the hydrolysis product,
- a metal oxide powder selected from the group consisting of ⁇ 2, ZrCh, S1O2, Al2O3, Fe2Ü3, Fe3Ü4, Sb2Ü3, WO3, CeCh and mixed oxides thereof, which at the surface of the Having particles of hydroxyl groups, dispersed in an aqueous solvent and subsequently adding a surface modifying agent, causing the mixture to react and optionally separating the hydrolysis product,
- Si atom is bonded and the Si atom is further bonded to one or more hydroxy groups, alkoxy groups, halide groups or mixtures thereof, and
- the amount of surface modifying agent depends on the desired ratio of silica to surface modifier. As suitable size proves the
- Carbon content of the surface-modified silica This is preferably 3 - 25 wt .-%.
- the amount of hydroxy groups, alkoxy groups or halide groups eliminated during the hydrolysis must be taken into consideration.
- a number of methods are available to the person skilled in the art.
- devices such as ultrasound probes, ball mills, stirred ball mills, rotor / stator machines, planetary kneaders / mixers or high-energy mills or combinations are available for the preparation of finely divided dispersions.
- a rotor / stator system a predispersion can be prepared which in a subsequent step by means of a
- the mixture is brought to reaction by adjusting a pH of 1 1 or more, the mixture is thermally treated at a temperature of 50-95 ° C over a period of 1 to 30 minutes and subsequently optionally a pH Value from 8 - 10 sets.
- the BET surface area of the metal oxide of the mixed metal oxide powder or is preferably 40 - 500 m 2 / g, more preferably 80 - 300 m 2 / g.
- the BET surface area is determined according to DIN 66131.
- a pyrogenic metal oxide powder or a pyrogenic metal mixed oxide powder is used.
- a pyrogenic silicon-aluminum mixed oxide powder has proved to be particularly suitable.
- AEROSIL ® MOX 80 Evonik Industries having a BET surface area of 60 - 100 m 2 / g and an aluminum oxide proportion of 0.3 - 1. 3 wt .-%
- AEROSIL ® MOX 170 Evonik Industries, having a BET Surface area of 140-200 m 2 / g and an aluminum oxide content of 0.3-1.3% by weight. Both fumed silicon-aluminum mixed oxide powders can preferably be used.
- the pyrogenic silicon-aluminum mixed oxide powder disclosed in EP-A-995718 can be used. It is obtained by reacting a vaporous silica precursor and an aluminum chloride solution in a flame. Due to the fine distribution of aluminum chloride in the aerosol and during the genesis of the oxide in the gas phase, there is a largely homogeneous incorporation of the aluminum.
- the aluminum oxide concentration at the surface is thus further reduced.
- R is a group which does not impart hydrophobic properties, and is preferred
- R corresponds to the abovementioned radicals, but without -H, -CH 3, -C 2 H 5.
- Y comprises branched polyethylene glycols.
- Hydrocarbon radical is attached and the Si atom continues to one or more
- Hydroxy groups, alkoxy groups, halide groups or mixtures thereof is bonded from the group consisting of (CH 3 O) 3 Si (CH 2 ) 3 -OCH 3 , (CH 3 O) 3 Si (CH 2 ) 3 - (OCH 2 CH 2 ) 3 -OCH 3 ,
- Hydrocarbon radical is attached and the Si atom continues to one or more
- Another object of the invention is an aqueous dispersion which is obtainable by a metal oxide powder selected from the group consisting of Ti0 2 , Zr0 2 , Si0 2 , Al 2 0 3 , Fe 2 0 3 , Fe 3 Ü4, Sb 2 0th 3 , W0 3 , Ce0 2 and mixed oxides thereof, which has hydroxyl groups on the surface of the particles, dispersed in an aqueous solvent and subsequently adding a surface modifying agent, causing the mixture to react and
- Si atom is bonded and the Si atom is further bonded to one or more hydroxy groups, alkoxy groups, halide groups or mixtures thereof, and
- Another object of the invention is a special surface-modified mixed oxide powder comprising silicon and aluminum, in which
- silicon atoms and aluminum atoms comprises and
- the silicon atoms are at least partially bonded via a carbon atom to a hydrocarbon radical
- the silicon atoms which are at least partially bonded via a C atom to a hydrocarbon radical are part of the radical Si (CH 2) n-Y m -R, and
- R is a group which does not impart hydrophobic properties, and is preferred
- R corresponds to the abovementioned radicals, but without -H, -CH 3 , -C 2 H5.
- R ⁇ R 2 , R 3 , R 4 , R 5 , R 6 independently of one another H or CH 3 , - NHCH 2 CH 2 O-, -NH (CH 2 ) 2 NH (CH 2 ) 2 -, -NH (CH 2 ) 2 NH (CH 2 ) 2 - or a mixture of the aforementioned R and Y radicals.
- Y comprises branched polyethylene glycols.
- the BET surface area of the surface-modified metal oxide powder is preferably 40-500 m 2 / g, particularly preferably 80-300 m 2 / g.
- the BET surface area is determined according to DIN 66131.
- a further subject of the invention is the use of the dispersion according to the invention and the surface-modified, silicon-aluminum mixed oxide powder according to the invention in each case as Component of pharmaceutical preparations, cosmetic preparations,
- deionized water In 900 g of deionized water (deionized water) are 28.500 g NaCl, 0.220 g NaHCOs, 4.066 g Na 2 S0 4 , 1, 625 g CaCl 2 ⁇ 2 H 2 0, 3, 162 g MgCl 2 ⁇ 6 H 2 O, 0.024 g SrCl 2 ⁇ 6 H 2 O, 0, 721 g KCl dissolved and made up to 1 liter with deionised water.
- the powder has the following properties:
- the BET surface area is 173 m 2 / g.
- Particle diameter dso is determined to be 1 12 nm.
- LUDOX SM ® 30, Grace is an aqueous, stabilized with NaOH, colloidal silica dispersion having a particle size of 8 nm and a content of 30 wt .-% of S1O2.
- LUDOX HS 40 ®, Grace is an aqueous, stabilized with NaOH, colloidal silica dispersion having a particle size of 12 nm and a content of S1O2 of 40 wt .-%.
- LUDOX CL ®, Grace is an aqueous dispersion of coated with Al, colloidal silica of 22 nm particle size. The pH is 3.5-4.5, the solids content 39-43% by weight.
- Water it is demineralized water.
- Example 2 (according to the invention)
- the inventive dispersion of Examples 1 and 2 have a good salt stability at a temperature of 90 ° C.
- Example 3 the proportion of SiO 2 in the surface modification is increased compared with Examples 1 and 2 according to the invention.
- Examples 4-6 comparative, the surface modification did not show Al.
- Dispersions have significantly lower stability.
- Example 7 the surface modification only shows Al. This dispersion also has a significantly lower stability.
- Example 9 (according to the invention): Redispersible powder
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- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
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- Animal Behavior & Ethology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Birds (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
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Abstract
Description
Claims
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EP15176283 | 2015-07-10 | ||
PCT/EP2016/064955 WO2017009032A1 (de) | 2015-07-10 | 2016-06-28 | Metalloxid enthaltende dispersion mit hoher salzstabilität |
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US (1) | US10920084B2 (de) |
EP (1) | EP3319905A1 (de) |
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WO (1) | WO2017009032A1 (de) |
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EP3319906B1 (de) | 2015-07-10 | 2021-09-22 | Evonik Operations GmbH | Sio2 enthaltende dispersion mit hoher salzstabilität |
CN108291137B (zh) | 2015-10-26 | 2021-01-12 | 赢创运营有限公司 | 使用二氧化硅流体获得矿物油的方法 |
US10702843B2 (en) | 2018-03-29 | 2020-07-07 | Baker Hughes, A Ge Company, Llc | Compositions of matter comprising suspended nanoparticles and related methods |
FR3083092A1 (fr) * | 2018-06-29 | 2020-01-03 | L'oreal | Composition cosmetique comprenant une dispersion colloidale de particules de silice |
US11981855B2 (en) | 2022-04-01 | 2024-05-14 | Baker Hughes Oilfield Operations Llc | Compositions of matter comprising suspended nanoparticles functionalized with glymo or glymo-like groups and related methods |
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- 2016-06-28 WO PCT/EP2016/064955 patent/WO2017009032A1/de active Application Filing
- 2016-06-28 EP EP16733468.9A patent/EP3319905A1/de active Pending
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CN107922197A (zh) | 2018-04-17 |
CN107922197B (zh) | 2021-11-19 |
WO2017009032A1 (de) | 2017-01-19 |
US20180194947A1 (en) | 2018-07-12 |
US10920084B2 (en) | 2021-02-16 |
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