WO2003014131A1 - Fluoralkylmodifizierte organosilane, verwendung in beschichtungszusammensetzungen - Google Patents
Fluoralkylmodifizierte organosilane, verwendung in beschichtungszusammensetzungen Download PDFInfo
- Publication number
- WO2003014131A1 WO2003014131A1 PCT/EP2002/008496 EP0208496W WO03014131A1 WO 2003014131 A1 WO2003014131 A1 WO 2003014131A1 EP 0208496 W EP0208496 W EP 0208496W WO 03014131 A1 WO03014131 A1 WO 03014131A1
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- WIPO (PCT)
- Prior art keywords
- radical
- organosilanes
- atoms
- linear
- formula
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- Ceased
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- 0 *N*[Si+](*)* Chemical compound *N*[Si+](*)* 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
Definitions
- the present invention relates to fluoroalkyl-modified organosilanes, processes for their preparation and their use, in particular as additives in coating compositions to reduce their tendency to become soiled.
- the resulting coating compositions also have increased water resistance compared to coatings in which surfactant-like comparative compounds have been incorporated.
- the impregnating effect is given even with repeated soiling with dirt dispersions.
- Perfluoroalkyl groups in coating compositions reduce their tendency to soiling.
- Dust-repellent color compositions are known from US Pat. No. 4,208,496 which contain ionic emulsifiers of the formula F (CF 2 ) n CH 2 CH 2 SCr. 2 CH 2 COOLi included as a color component.
- ionic emulsifiers of the formula F (CF 2 ) n CH 2 CH 2 SCr. 2 CH 2 COOLi included as a color component.
- these emulsifiers have no functional groups in the molecule which could lead to anchoring in the color film formed.
- Emulsifiers can be easily washed out of coatings. Furthermore, the water resistance of coatings is negatively influenced by non-chemically covalently bound emulsifiers.
- low-molecular silane-modified perfluoroalkane compounds of the formula C n F2n + ⁇ (CH 2 ) 2Si (OR) 3 are known, such as C 6 F 13 (CH 2 ) 2Si (OEt) 3.
- These compounds are used, among other things, to impregnate mineral Substrates used.
- the surfaces to be subsequently treated with these compounds must, however, be cleaned before application and the additive may have to be applied repeatedly. This high quality seal against pollution is very expensive due to the high cost of the additive and the multiple operations.
- the substances are expensive because of their synthesis by hydrosilylation, since noble metal catalysts have to be used.
- JP-A-08/109580 describes the production of siloxane compounds containing amino groups for fiber impregnation.
- a diamine functionalized, oligomeric or polymeric siloxane on (meth) acrylic acid ester is used. added.
- the presence of diamines leads to an increase in
- JP-A-09/279049 discloses silicon-containing compounds consisting of silicon group-containing polymers and adducts of diaminosilanes and per- or partially fluorinated alkyl radicals containing ethylenically unsaturated compounds.
- diamines owing to their higher polarity, lead to higher water absorption and higher yellowing, compared to compounds which are otherwise constitutively identical without a second amine group. The yellowing occurs due to oxidative attack on the nitrogen atoms.
- the complex di- or oligoamines are more expensive to produce than the simple aminosilanes.
- hydrophilic organosilicon compounds by addition of amino groups-containing silanes or (poly) siloxanes with (oligo) hydroxy or Sugar residues modified (meth) acrylates are described in DE-A-198 54 186.
- Amino-organopolysiloxanes are preferably added to the (meth) acrylic esters.
- a disadvantage of such additives with hydrophilic residues to reduce the tendency to soiling is their increased water absorption.
- the compounds should combine the advantages of both polymeric and low molecular weight additives, namely, on the one hand, they should have a high migration capacity during film consolidation in order to enrich the hydrophobic
- the present invention relates to general organosilanes
- R is a fluorinated or partially fluorinated alkyl radical of the formula CnZ 2n + ⁇ (CH 2 ) m-, with n> 1, m> 1 and Z either a hydrogen atom or a fluorine atom, with the proviso that at least one Z is a fluorine atom,
- Y is a hydrogen atom or alkyl radical with 1 to 10 C atoms
- X is either a hydrogen atom, a linear or branched alkyl radical with 1 to 10 C atoms, a radical of the formula ROC (O) (CHY) (CH 2 ) -, a phenyl - or a benzyl radical,
- R 1 is a linear or branched alkylene radical with 1 to 20 C atoms and R 2 , R 3 and R linear or branched s alkyl radicals with 1 to 10 C atoms or linear or branched alkoxy radicals with 1 to 10 C atoms, Represent oxygen atom with the silicon atom represent.
- Organosilanes of the general formula (I) are preferred, where R is a fluorinated alkyl radical of the formula C n F 2 n + ⁇ (CH 2 ) m -.
- Y is a hydrogen atom or a methyl radical
- R 1 is a - (CH 2 ) 3 -, a -CH 2 CH (CH 3 ) CH 2 - or a -C 2 H4 radical, and
- R 2 , R 3 , R 4 represent a CH 3 O, a C 2 H 5 O or a CH (CH 3 ) 2 ⁇ radical.
- Organosilanes of the general formula (I) are particularly preferred, where X is an ethyl radical,
- Y is a hydrogen atom or a methyl radical
- R 1 is a -CH 2 CH (CH 3 ) CH 2 radical
- R 2 ; R 3 , R 4 represent a CH 3 O radical; -, or -
- X is a methyl radical
- Y is a hydrogen atom or a methyl radical
- R 1 is a - (CH 2 ) 3 radical
- R 2 , R 3 , R 4 represent a CH 3 O radical.
- the organosilanes according to the invention are both hydrophobic and oleophobic and contain no siloxane groups.
- the only silicon functionality of the organosilanes according to the invention, the silane group, serves to anchor the hydro- and oleophobic fluoroalkyl group on the substrate.
- the present invention further relates to processes for the preparation of the organosilanes according to the invention.
- the organosilanes according to the invention are preferably prepared by addition of the ⁇ -aminoalkylsilanes with the amino group to the double bond of the (meth) acrylic acid esters with fluorinated side chain similar to the Michael reaction.
- (Meth) acrylic acid esters are understood to mean both the esters of acrylic and the esters of methacrylic acid.
- the present invention thus also relates to a method for
- R is a fluorinated or partially fluorinated alkyl radical of the formula C n Z2n + ⁇ (CH 2 ) m -, with n> 1, m> 1 and Z either a hydrogen atom or a fluorine atom, with the proviso that at least one Z is a fluorine atom,
- Y is a hydrogen atom or alkyl radical with 1 to 10 C atoms
- X is either a hydrogen atom, a linear or branched alkyl radical with 1 to
- R 1 is a linear or branched alkylene radical having 1 to 20 carbon atoms and
- R 2 , R 3 and R 4 are linear or branched alkyl radicals having 1 to 10 carbon atoms or linear or branched alkoxy radicals having 1 to 10 carbon atoms, which have the
- the reaction takes place either without solvent or with the addition of water, organic solvents or mixtures thereof.
- the reaction preferably takes place under atmospheric pressure (1 bar), but it can also be carried out under elevated or reduced pressure. Catalysts which accelerate the reaction can also be used.
- the reaction product is either used in the reaction solvent or the solvent used is removed. If necessary, the product obtained can be removed in another solvent after removal of the solvent be dissolved, or dispersed in water or another liquid. Emulsifiers can be used for this.
- Another preferred object of the present invention relates to the use of the organosilanes according to the invention, in particular in
- Coating compositions for treating surfaces to reduce their tendency to become soiled.
- organosilanes according to the invention are also used as anti-blocking agents, in particular in coating compositions (e.g. clearcoats for wood coating) and polymer dispersions.
- coating compositions e.g. clearcoats for wood coating
- Another object of the present invention thus relates to the use of the organosilanes according to the invention as anti-blocking agents, in particular in coating compositions, for the treatment of surfaces.
- the organosilanes according to the invention as additives in polymer dispersions have blocking resistance, i.e. the resistance to sticking to similarly treated or other surfaces, the resulting coatings significantly increase.
- blocking resistance i.e. the resistance to sticking to similarly treated or other surfaces
- the resulting coatings significantly increase.
- the organosilanes according to the invention for example 0.5% by weight
- even the smallest amounts of the organosilanes according to the invention lead to excellent blocking resistance (tendency to block) compared to similarly treated surfaces, determined at 50 ° C and room temperature).
- the present invention also relates to the use of the organosilanes according to the invention for the hydrophobization and oleophobicization of surfaces.
- the surfaces are preferably coated for all purposes by adding the organosilanes according to the invention in Sprayed substance, solution or dispersion on the surfaces to be treated, dipping the surface in the solution or dispersion of the additives, or applying with a brush or roller, or a coating composition to be applied, containing at least one polymeric binder, in substance, solution or dispersion adds and applies the coating composition to the surface.
- the additives according to the invention can also be used as release agents for surfaces.
- the present invention also relates to the coating compositions themselves.
- Preferred coating compositions are a) at least one polymeric binder, b) at least one organosilane according to the invention, and c) optionally pigments, fillers, dispersants, thickeners, protective colloids, wetting agents, preservatives, algicides, rust protection pigments, UV filter materials, UV initiators and / or contain other auxiliary substances. -. , , , '
- the coating composition here contains the polymeric binder (s) in solution, dispersion or emulsion in liquids or in bulk (the latter, for example, in the case of powder coatings as a coating composition).
- All polymeric binders known to the person skilled in the art can be used as polymeric binders.
- Preferred polymeric binders are
- the organosilanes according to the invention are particularly preferred for reducing the early tendency to dirt in pigment-containing ones
- Outer coatings with polymeric binders are used that contain UV initiators (such as benzophenone derivatives).
- the UV initiator can either be contained in the polymeric binder or can be added to the coating composition during its production.
- Preferred applications of these coatings are, for example, elastic exterior paints and road marking paints.
- Coating compositions which additionally contain at least one UV initiator are therefore particularly preferred.
- the dirt-repellent organosilanes migrate to the surface of the coating composition or the polymer film and prevent the soft, polymeric binder from sticking to dirt particles until the polymeric binder has hardened on the surface due to the UV initiators. Depending on the solar radiation, a considerable time may pass before the surfaces of the coatings have hardened by the UV initiator.
- the reactive groups of the organosilane react with the reactive groups of the polymer and, if present, with the reactive groups of the pigments and / or fillers. This can prevent the organosilane from being washed out from the surface of the coating.
- the dirt-repellent effect of the organosilanes according to the invention is enhanced if they are used in coating compositions (also clear coats) which contain polymer dispersions which contain ethylenically unsaturated ⁇ -hydroxyalkyl acrylates or ⁇ -hydroxyalkyl methacrylates (such as 2-hydroxyethyl methacrylate) and at the same time Epoxyalkylsilanes (e.g. ß- (3,4-
- Epoxycyclo-hexyl) ethyltriethoxysilane or ⁇ -glycidyloxypropyltrimethoxysilane contain.
- the at least one polymeric binder of the coating composition according to the invention contains at least one ⁇ -hydroxyalkyl (meth) acrylate as a monomeric building block (comonomer) and at least one epoxyalkylsilane of the formula BSiR 3 , where the radical B is an organic radical with at least one
- 2-Hydroxyethyl methacrylate is particularly preferably used as ⁇ -hydroxyalkyl (meth) acrylate and ß- (3,4-epoxycyclohexyl) ethyltriethoxysilane or ⁇ -glycidyloxypropyltrimethoxysilane is particularly preferably used as epoxyalkylsilane.
- organosilanes are used in coating compositions, they can either be used directly in the polymeric binder (in solution or
- Dispersion are added, or added during the production of the coating or the color.
- additives are used directly to impregnate surfaces, they are preferably applied in solution or dispersion.
- 15 g of coating composition are mixed with 9 g of demineralized water and on the underside of a plastic cup with a rim (approx. 11 cm Diameter) poured out. It is dried for 7 days at room temperature, the coating film being peeled off and turned once a day. Then 3 x 3 cm specimens are cut out of the film and detached from the substrate. The films are weighed (double determination) and then stored in water in a petri dish for 24 hours. Then the water is dabbed off with a cellulose cloth and the film is weighed out again. The weight increase in percent on the sample weight corresponds to the first water absorption. The test specimens are then dried for 2 days and the film is then weighed, washed for 24 hours, blotted with a cellulose cloth and weighed again. The second water absorption in percent is determined analogously to the first.
- the dispersion is squeegee on a glass plate (5 x 8 cm) with a 200 ⁇ m box doctor blade and dried for one hour at 4Q ° C, then overnight at
- Samples are prepared in the same way as for dry soiling, but a fiber cement board, Eterplan 300 x 150 x 4 mm, is used as the substrate.
- the wet layer thickness of the film is 300 ⁇ m.
- the dried sample is fixed with the coating facing upwards over a collecting tray on a base at a 60 ° inclination to the horizontal.
- the dirt solution is produced as follows: 17 g of carbon black FW 200, 70 g of Japanese standard dust No. 8 and 13 g of Special Pitch No.5 (from Worlee) are weighed into a 1000 ml powder bottle and 400 cm 3 of glass beads are added. It is mixed on the trestle for 24 hours and the glass beads are sieved. The powder is homogenized with a mortar and pestle. 1 g of standard dirt powder is placed in a glass vessel with 1 g of butyl glycol and 998 g of water are added. The dispersion is stirred with a magnetic stirrer.
- Example 1 Preparation of the Fluoroalkyl Modified Organosilanes The course of the reaction is monitored analytically via the amine number and via 1 H-NMR using the intensities of the protons of the acrylate double bond.
- Calcium carbonate (Durcal ® 2) was added in succession and stirred with a dissolver at 5000 rpm for 15 minutes. Then 382.3 g of a dispersion (solids content approx. 60%) at 500 rpm and 1 g of 20% ammonia water and stirred for 5 minutes. Finally, 2 g of Mergal ® K9, 2 g of butyl diglycol, 10 g of propylene glycol, 5 g of White Spirit ® 17/18 and finally a solution of 7.5 g of Coatex ® BR 100 and 23.2 g of water are added. The mixture is then stirred for a further 5 minutes.
- the paint Before use, the paint is stored at room temperature for at least one day.
- the coatings with the organosilanes according to the invention have a reduced water absorption compared to those with a non-reactive fluorine emulsifier as an additive.
- the organosilanes according to the invention lead to an improved early tendency towards wet soiling in the coatings compared to additives with a surfactant character but without reactive functionality.
- Mowilith LDM 6636 ® Fe. Clariant
- various additives for reducing the soiling tendency may be added various additives for reducing the soiling tendency and the mixture homogenized for 10 minutes with a paddle. Then the respective mixture is drawn onto a glass plate using a 300 ⁇ m box doctor blade and dried for 24 hours at room temperature.
- the organosilanes according to the invention cause an increase and not, like the additives of the prior art, a reduction in the water resistance.
- the paint is stored for at least one day before use.
- a styrene-butyl acrylate polymer dispersion (solids content: 50%, T g : 20 ° C.) prepared by emulsion polymerization in water at 80 ° C. and polymerized in 3.8% by weight of 2-hydroxyethyl methacrylate (HEMA), based on the mpomers contains, a) with no additive, b) with 0.5% by weight, based on the solids content of the dispersion, ⁇ -glycidyloxypropyltrimethoxysilane, and c) with 0.5% by weight, based on the solids content of the dispersion, Y-glycidyloxypropyltrimethoxysilane and 1% by weight, based on the solids content of the dispersion, of organosilane from Example 1b as additives.
- HEMA 2-hydroxyethyl methacrylate
- a styrene-butyl acrylate polymer dispersion of the same composition as that of Example 9, but which does not contain 2-hydroxyethyl methacrylate, is a) with no additive, b) with 0.5% by weight, based on the solids content of the dispersion, - ⁇ -Glycidyloxypropyrtrimethoxysilane, and c) with 0.5 wt .-%, based on the solids content of the dispersion, ⁇ -glycidyloxypropyltrimethoxysilane and 1 wt .-%, based on the solids content of the dispersion, organosilane of Example 1 b.
- the resulting dispersions are applied to glass plates using a box doctor (300 ⁇ m wet film thickness) and dried for 24 hours at room temperature. Then the dry soiling tendency (fly ash-soot mixture) is determined. The results are shown in Table 9.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003519080A JP2004537601A (ja) | 2001-08-02 | 2002-07-31 | フルオロアルキルで変性されたオルガノシラン及びそれをコーティング組成物中に使用する方法 |
| EP02762416A EP1414831A1 (de) | 2001-08-02 | 2002-07-31 | Fluoralkylmodifizierte organosilane, verwendung in beschichtungszusammensetzungen |
| MXPA04000983A MXPA04000983A (es) | 2001-08-02 | 2002-07-31 | Organosilanos modificados con fluoroalquilo y su uso en composiciones de revestimiento. |
| BRPI0211638-3A BR0211638B1 (pt) | 2001-08-02 | 2002-07-31 | organossilanos modificados com fluoraquila, usos dos referidos compostos, método de revestimento de superfìcies e composição de revestimento. |
| US10/485,933 US20050038150A1 (en) | 2001-08-02 | 2002-07-31 | Fluoroalkyl-modified organosilanes and their use in coating compositions |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10137900.5 | 2001-08-02 | ||
| DE10137900 | 2001-08-02 | ||
| DE10141075.1 | 2001-08-22 | ||
| DE10141075A DE10141075C2 (de) | 2001-08-02 | 2001-08-22 | Fluoralkylmodifizierte Organosilane, Verfahren zu ihrer Herstellung sowie ihre Verwendung, insbesondere in Beschichtungszusammensetzungen zur Verringerung deren Anschmutzneigung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003014131A1 true WO2003014131A1 (de) | 2003-02-20 |
Family
ID=26009854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/008496 Ceased WO2003014131A1 (de) | 2001-08-02 | 2002-07-31 | Fluoralkylmodifizierte organosilane, verwendung in beschichtungszusammensetzungen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20050038150A1 (de) |
| EP (1) | EP1414831A1 (de) |
| JP (1) | JP2004537601A (de) |
| BR (1) | BR0211638B1 (de) |
| MX (1) | MXPA04000983A (de) |
| WO (1) | WO2003014131A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009073595A1 (en) | 2007-12-04 | 2009-06-11 | E. I. Du Pont De Nemours And Company | Fluoroalkyl silanes |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040031225A1 (en) * | 2002-08-14 | 2004-02-19 | Gregory Fowler | Water resistant tongue and groove flooring |
| DE102004053384A1 (de) * | 2004-11-02 | 2006-05-04 | Degussa Ag | Flüssiges, viskoses Mittel auf Basis eines organofunktionellen Silansystems zur Herstellung witterungsstabiler Schutzbeschichtungen zur Verhinderung von Verschmutzungen von Oberflächen |
| EP1787712A1 (de) * | 2005-11-17 | 2007-05-23 | Sika Technology AG | Mischvorrichtung für Flüssigkeiten |
| US7745653B2 (en) * | 2007-03-08 | 2010-06-29 | 3M Innovative Properties Company | Fluorochemical compounds having pendent silyl groups |
| US8153834B2 (en) * | 2007-12-05 | 2012-04-10 | E.I. Dupont De Nemours And Company | Surface modified inorganic particles |
| JPWO2009087981A1 (ja) * | 2008-01-11 | 2011-05-26 | 株式会社Kri | 重合性化合物及びこの製造方法 |
| CN103509422B (zh) * | 2012-06-29 | 2018-07-31 | 3M创新有限公司 | 一种疏水和疏油的涂层组合物 |
| WO2018027271A1 (en) * | 2016-08-11 | 2018-02-15 | Guard It Solutions Pty Ltd | Compositions for sealing and/or protecting porous substrates |
| JPWO2024161857A1 (de) * | 2023-01-30 | 2024-08-08 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657959A (en) * | 1985-11-15 | 1987-04-14 | Minnesota Mining And Manufacturing Company | Hydrophilic silicones |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3719698A (en) * | 1967-11-27 | 1973-03-06 | Stevens & Co Inc J P | Polyfluorinated esters of acids containing silicon and amino groups |
| US4617057A (en) * | 1985-06-04 | 1986-10-14 | Dow Corning Corporation | Oil and water repellent coating compositions |
| EP0388858B1 (de) * | 1989-03-20 | 1993-06-16 | Kansai Paint Co., Ltd. | Wärmehärtbare Beschichtungsmasse auf Harzbasis |
-
2002
- 2002-07-31 JP JP2003519080A patent/JP2004537601A/ja active Pending
- 2002-07-31 WO PCT/EP2002/008496 patent/WO2003014131A1/de not_active Ceased
- 2002-07-31 BR BRPI0211638-3A patent/BR0211638B1/pt not_active IP Right Cessation
- 2002-07-31 MX MXPA04000983A patent/MXPA04000983A/es unknown
- 2002-07-31 EP EP02762416A patent/EP1414831A1/de not_active Withdrawn
- 2002-07-31 US US10/485,933 patent/US20050038150A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657959A (en) * | 1985-11-15 | 1987-04-14 | Minnesota Mining And Manufacturing Company | Hydrophilic silicones |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009073595A1 (en) | 2007-12-04 | 2009-06-11 | E. I. Du Pont De Nemours And Company | Fluoroalkyl silanes |
| US8058463B2 (en) | 2007-12-04 | 2011-11-15 | E. I. Du Pont De Nemours And Compnay | Fluorosilanes |
| US8420826B2 (en) | 2007-12-04 | 2013-04-16 | E. I. Du Pont De Nemours And Company | Fluoroalkyl silanes |
| US8501952B2 (en) | 2007-12-04 | 2013-08-06 | E. I. Du Pont De Nemours And Company | Fluoroalkyl silanes |
| AU2008334037B2 (en) * | 2007-12-04 | 2013-09-12 | The Chemours Company Fc, Llc. | Fluoroalkyl silanes |
| CN101889018B (zh) * | 2007-12-04 | 2014-05-14 | 纳幕尔杜邦公司 | 氟代烷基硅烷 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1414831A1 (de) | 2004-05-06 |
| JP2004537601A (ja) | 2004-12-16 |
| MXPA04000983A (es) | 2004-04-20 |
| BR0211638B1 (pt) | 2012-11-27 |
| BR0211638A (pt) | 2004-07-13 |
| US20050038150A1 (en) | 2005-02-17 |
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