WO2011142463A1 - 紫外線吸収膜形成用塗布液および紫外線吸収ガラス物品 - Google Patents
紫外線吸収膜形成用塗布液および紫外線吸収ガラス物品 Download PDFInfo
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- WO2011142463A1 WO2011142463A1 PCT/JP2011/061073 JP2011061073W WO2011142463A1 WO 2011142463 A1 WO2011142463 A1 WO 2011142463A1 JP 2011061073 W JP2011061073 W JP 2011061073W WO 2011142463 A1 WO2011142463 A1 WO 2011142463A1
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- absorbing film
- ultraviolet
- ultraviolet absorbing
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- coating solution
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/02—Polysilicates
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/74—UV-absorbing coatings
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- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31609—Particulate metal or metal compound-containing
- Y10T428/31612—As silicone, silane or siloxane
Definitions
- the present invention relates to a coating liquid for forming an ultraviolet absorbing film on the surface of an article such as glass and an ultraviolet absorbing glass article having an ultraviolet absorbing film formed using the coating liquid.
- transparent substrates such as window glass for vehicles such as automobiles and window glass for building materials attached to buildings such as houses and buildings have the ability to absorb ultraviolet rays incident on the interior of cars and indoors through these, and are resistant. Attempts have been made to form a UV-absorbing film having mechanical durability such as wear.
- the silica-based ultraviolet absorbing film described in Patent Document 1 has mechanical durability such as friction resistance, the film may be yellowish even when colorless and transparent are required, and the long-time exposure. There was a problem in that the ultraviolet absorption ability deteriorated.
- the present invention has been made to solve the above-mentioned problems, and has mechanical durability such as abrasion resistance, sufficient colorless transparency, and little deterioration of ultraviolet absorption ability due to long-time exposure.
- An object of the present invention is to provide an ultraviolet-absorbing glass article having an ultraviolet-absorbing film with little deterioration.
- the present invention provides a coating solution for forming an ultraviolet absorbing film and an ultraviolet absorbing glass article having the following configuration.
- a silicon oxide matrix raw material component comprising at least one selected from hydrolyzable silicon compounds, an ultraviolet absorber, an acid having a pKa of the first proton of 1.0 to 5.0, and water.
- the acid is contained at a ratio of 0.005 to 5.0 mol / kg as the molar concentration of the proton with respect to the total mass of the coating solution when the first proton of the acid is completely dissociated.
- the coating liquid for ultraviolet-ray absorption film formation of description is described.
- a tetrafunctional hydrolyzable silicon compound that may contain a partially hydrolyzed condensate as a main component of the silicon oxide matrix raw material component, and further a flexibility-imparting component.
- a tetrafunctional hydrolyzable silicon compound and a trifunctional which each may contain a partial hydrolysis condensate and / or a partial hydrolysis cocondensate of both as a main component of the silicon oxide matrix raw material component
- the content of the silicon oxide-based matrix material component to the coating solution the total mass, the content of SiO 2 when converted to silicon atoms contained in said component in SiO 2, from 1 to 20 mass%, [ [1]
- the ultraviolet absorbing film has mechanical durability such as abrasion resistance, sufficiently ensures colorless transparency, and has little deterioration in ultraviolet absorbing ability due to long-time exposure.
- the UV-absorbing glass article of the present invention having such an UV-absorbing film is colorless and transparent, and has long-term durability both mechanically and UV-absorbing ability.
- the coating solution for forming an ultraviolet absorbing film has a silicon oxide matrix raw material component comprising at least one selected from hydrolyzable silicon compounds, an ultraviolet absorber, and a pKa of the first proton of 1.0 to 5.0. Contains acid and water.
- the silicon oxide matrix raw material component contained in the coating solution for forming an ultraviolet absorbing film of the present invention comprises at least one selected from hydrolyzable silicon compounds.
- the hydrolyzable silicon compounds are a silane compound group in which at least one hydrolyzable group is bonded to a silicon atom, and one or two or more partial hydrolysiss of such a silane compound group ( Used as a generic term for condensates.
- the number of functionalities of the hydrolyzable silicon compound refers to the number of hydrolyzable groups bonded to the silicon atom.
- the hydrolyzable silicon compounds are a hydroxyl group in which the hydrolyzable group is hydrolyzed and bonded to a silicon atom in the presence of the acid and water as a catalyst (that is, silanol). Group), and then silanol groups are dehydrated and condensed to form a siloxane bond represented by —Si—O—Si— to increase the molecular weight.
- a linear polysiloxane is formed only from a bifunctional hydrolyzable silicon compound, but a three-dimensional network of polysiloxane is formed from a trifunctional hydrolyzable silicon compound or a tetrafunctional hydrolyzable silicon compound.
- a silicon oxide matrix is formed.
- a three-dimensional network / silicon oxide matrix of polysiloxane is formed from a mixture of a bifunctional hydrolyzable silicon compound and a trifunctional hydrolyzable silicon compound or a tetrafunctional hydrolyzable silicon compound. .
- the coating solution for forming an ultraviolet absorbing film of the present invention preferably contains a tetrafunctional hydrolyzable silicon compound that may contain a partial hydrolysis condensate as a main component of the silicon oxide matrix raw material component, In that case, it is preferable to contain the flexibility provision component mentioned later.
- a partial hydrolytic condensate and / or a partial hydrolytic cocondensate of a tetrafunctional hydrolyzable silicon compound and a trifunctional hydrolyzable silicon compound as main components, respectively.
- those containing a tetrafunctional hydrolyzable silicon compound and a trifunctional hydrolyzable silicon compound which may contain
- the silicon oxide matrix raw material component is composed of only a tetrafunctional hydrolyzable silicon compound which may contain a partial hydrolysis condensate, and a flexibility imparting component. Both are blended in the coating solution for forming an ultraviolet absorbing film.
- hydrolyzable groups possessed by the hydrolyzable silicon compound include alkoxy groups (including substituted alkoxy groups such as alkoxy-substituted alkoxy groups), alkenyloxy groups, acyl groups, acyloxy groups, oxime groups, amide groups, Examples thereof include an amino group, an iminoxy group, an aminoxy group, an alkyl-substituted amino group, an isocyanate group, and a chlorine atom.
- the hydrolyzable group is preferably an organooxy group such as an alkoxy group, an alkenyloxy group, an acyloxy group, an iminoxy group, an aminoxy group, and particularly preferably an alkoxy group.
- an alkoxy group having 4 or less carbon atoms and an alkoxy-substituted alkoxy group having 4 or less carbon atoms are preferable, and a methoxy group and an ethoxy group are particularly preferable.
- the tetrafunctional hydrolyzable silicon compound is a compound in which four hydrolyzable groups are bonded to a silicon atom. Four of the hydrolyzable groups may be the same as or different from each other.
- the hydrolyzable group is preferably an alkoxy group, more preferably an alkoxy group having 4 or less carbon atoms, and still more preferably a methoxy group and an ethoxy group. Specific examples include tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-n-butoxysilane, tetra-sec-butoxysilane, and tetra-tert-butoxysilane. In the present invention, tetraethoxysilane is preferable. Silane, tetramethoxysilane, etc. are used. These may be used alone or in combination of two or more.
- the trifunctional hydrolyzable silicon compound is a compound in which three hydrolyzable groups and one non-hydrolyzable group are bonded to a silicon atom. Three of the hydrolyzable groups may be the same as or different from each other.
- the hydrolyzable group is preferably an alkoxy group, more preferably an alkoxy group having 4 or less carbon atoms, and still more preferably a methoxy group and an ethoxy group.
- the non-hydrolyzable group is preferably a monovalent organic group having a non-hydrolyzable functional group or having no functional group, and is a non-hydrolyzable monovalent organic group having a functional group. Is more preferable.
- the non-hydrolyzable monovalent organic group refers to an organic group in which the organic group and a silicon atom are bonded by a carbon-silicon bond, and a bond terminal atom is a carbon atom.
- the functional group used in this specification is a term comprehensively indicating a reactive group, which is distinguished from a mere substituent, and includes, for example, a non-reactive group such as a saturated hydrocarbon group. Is not included in this.
- An addition polymerizable unsaturated double bond (ethylenic double bond) that is not involved in the formation of the main chain of the polymer compound that the monomer has in the side chain is one kind of functional group.
- (meth) acryl ...” such as (meth) acrylic acid ester used in the present specification is a term meaning both “acryl” and “methacryl”.
- the non-hydrolyzable monovalent organic group having no functional group does not have an addition polymerizable unsaturated double bond such as an alkyl group or an aryl group.
- a halogenated hydrocarbon group having no addition polymerizable unsaturated double bond such as a hydrocarbon group or a halogenated alkyl group is preferred.
- the non-hydrolyzable monovalent organic group having no functional group has particularly preferably 20 or less carbon atoms, more preferably 10 or less. As this monovalent organic group, an alkyl group having 4 or less carbon atoms is preferable.
- trifunctional hydrolyzable silicon compound having a non-hydrolyzable monovalent organic group having no functional group examples include methyltrimethoxysilane, methyltriethoxysilane, methyltris (2-methoxyethoxy) silane, Examples include methyltriacetoxysilane, methyltripropoxysilane, methyltriisopropenoxysilane, methyltributoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, and phenyltriacetoxysilane. . These may be used alone or in combination of two or more.
- Examples of the functional group in the non-hydrolyzable monovalent organic group having the functional group include an epoxy group, a (meth) acryloxy group, a primary or secondary amino group, an oxetanyl group, a vinyl group, a styryl group, a ureido group, Examples include a mercapto group, an isocyanate group, a cyano group, and a halogen atom, and an epoxy group, a (meth) acryloxy group, a primary or secondary amino group, an oxetanyl group, a vinyl group, a ureido group, a mercapto group, and the like are preferable.
- an epoxy group, a primary or secondary amino group, and a (meth) acryloxy group are preferable.
- the monovalent organic group having an epoxy group is preferably a monovalent organic group having a glycidoxy group or a 3,4-epoxycyclohexyl group, and the organic group having a primary or secondary amino group is an amino group or a monoalkyl group.
- Monovalent organic groups having an amino group, a phenylamino group, an N- (aminoalkyl) amino group and the like are preferable.
- a monovalent organic group having one functional group is preferable except for a primary or secondary amino group.
- a primary or secondary amino group it may have two or more amino groups, in which case a monovalent organic group having one primary amino group and one secondary amino group
- N- (2-aminoethyl) -3-aminopropyl group and 3-ureidopropyl group are preferable.
- the total carbon number of the monovalent organic group having these functional groups is preferably 20 or less, and more preferably 10 or less.
- preferable compounds include a glycidoxy group, a 2,3-epoxycyclohexyl group, an amino group, an alkylamino group (the alkyl group has 4 or less carbon atoms), phenyl at the terminal of the alkyl group having 2 or 3 carbon atoms.
- a trifunctional hydrolyzable silicon compound in which three of the alkoxy groups are bonded to a silicon atom.
- Such compounds include 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3 , 4-epoxycyclohexyl) ethyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane, di- (3-methacryloxy) propyltriethoxysilane, and the like.
- 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4 -Epoxycyclohexyl) ethyltriethoxysilane and the like are particularly preferred. These may be used alone or in combination of two or more.
- the bifunctional hydrolyzable silicon compound is a compound in which two hydrolyzable groups and two non-hydrolyzable groups are bonded to a silicon atom. Two of the hydrolyzable groups may be the same as or different from each other.
- the hydrolyzable group is preferably an alkoxy group, more preferably an alkoxy group having 4 or less carbon atoms, and still more preferably a methoxy group and an ethoxy group.
- the non-hydrolyzable group is preferably a non-hydrolyzable monovalent organic group.
- the non-hydrolyzable monovalent organic group may have a functional group similar to that of the trifunctional hydrolyzable silicon compound as necessary.
- bifunctional hydrolyzable silicon compound examples include dimethyldimethoxysilane, dimethyldiethoxysilane, dimethyldi (2-methoxyethoxy) silane, dimethyldiacetoxysilane, dimethyldipropoxysilane, and dimethyldiisopropenoxysilane.
- the tetrafunctional hydrolyzable silicon compound, the trifunctional hydrolyzable silicon compound, and the bifunctional hydrolyzable silicon compound may be blended as such, You may mix
- the partially hydrolyzed condensate and the partially hydrolyzed cocondensate are collectively referred to as a partially hydrolyzed (co) condensate.
- the partially hydrolyzed (co) condensate is an oligomer (multimer) produced by hydrolysis of a hydrolyzable silicon compound and subsequent dehydration condensation.
- the partially hydrolyzed (co) condensate is a high molecular weight compound that is usually soluble in a solvent.
- the partially hydrolyzed (co) condensate has a hydrolyzable group and a silanol group, and further has a property of being hydrolyzed (co) condensed to be a final cured product.
- a partial hydrolysis condensate can be obtained only from one kind of hydrolyzable silicon compound, and a partial hydrolysis cocondensate that is a cocondensate thereof can be obtained from two or more kinds of hydrolyzable silicon compounds. it can.
- the partial hydrolysis (co) condensation of the hydrolyzable silicon compound is performed, for example, by subjecting a reaction solution obtained by adding water to a lower alcohol solution of the hydrolyzable silicon compound in the presence of an acid catalyst at 1 to 48.degree. This can be done by stirring for a period of time.
- the type and amount of the acid catalyst used for the reaction are the same as the acid contained in the coating solution for forming an ultraviolet absorbing film.
- the tetrafunctional hydrolyzable silicon compound, the trifunctional hydrolyzable silicon compound, and the bifunctional hydrolyzable silicon compound are blended in any of the above states. Are finally distinguished as units constituting the silicon oxide matrix.
- a tetrafunctional hydrolyzable silicon compound itself and a partially hydrolyzed condensate thereof, and its hydrolyzable silicon in a partially hydrolyzed cocondensate The component derived from the compound is referred to as a component derived from the tetrafunctional hydrolyzable silicon compound.
- the silicon oxide-based matrix raw material component contained in the coating solution for forming an ultraviolet absorbing film of the present invention preferably comprises (1) a tetrafunctional hydrolyzable silicon compound-derived component as described above, or (2) It is composed of a component derived from a tetrafunctional hydrolyzable silicon compound and a component derived from a trifunctional hydrolyzable silicon compound.
- the coating solution for forming an ultraviolet absorbing film has a flexibility imparting component, in particular, in order to obtain sufficient crack resistance while ensuring the film thickness of the obtained ultraviolet absorbing film is constant. It is preferable to contain.
- the proportion of the tetrafunctional hydrolyzable silicon compound-derived component and the trifunctional hydrolyzable silicon compound-derived component is: tetrafunctional hydrolyzable silicon compound-derived component / 3 trifunctional hydrolysis
- the mass ratio is preferably 30/70 to 95/5, more preferably 40/60 to 90/10, and most preferably 50/50 to 80/20.
- the bifunctional hydrolyzable silicon compound-derived component is optionally blended as necessary in (1) and (2).
- the blending amount is preferably 30% by mass or less based on the total mass of the silicon oxide matrix raw material component.
- the content of the silicon oxide matrix raw material component with respect to the total mass of the coating liquid is calculated by converting the silicon atoms contained in the silicon oxide matrix raw material component into SiO 2.
- the SiO 2 content is preferably 1 to 20% by mass, more preferably 3 to 15% by mass.
- the coating solution for forming an ultraviolet absorbing film of the present invention contains an ultraviolet absorber so that a film formed using the coating liquid functions as an ultraviolet absorbing film.
- the acid catalyst is made specific to prevent deterioration of the ultraviolet absorber due to light and enable long-term use.
- ultraviolet absorbers include organic ultraviolet absorbers such as benzophenones, triazines, benzotriazoles, cyanoacrylates, azomethines, indoles, salicylates, and anthracenes. These UV absorbers include benzotriazole UV absorbers, triazine UV absorbers, benzophenone UV absorbers, cyanoacrylate UV absorbers, azomethine UV absorbers, indole UV absorbers, and salicylate UV absorbers. Agents, anthracene ultraviolet absorbers and the like, and aqueous dispersions and emulsions prepared using these compounds, as well as complexes of these compounds with metals.
- triazine ultraviolet absorber examples include 2- [4-[(2-hydroxy-3-dodecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4- Dimethylphenyl) -1,3,5-triazine, 2- [4-[(2-hydroxy-3- (2′-ethyl) hexyl) oxy] -2-hydroxyphenyl] -4,6-bis (2, 4-dimethylphenyl) -1,3,5-triazine, 2,4-bis (2-hydroxy-4-butoxyphenyl) -6- (2,4-bis-butoxyphenyl) -1,3,5-triazine 2- (2-hydroxy-4- [1-octylcarbonylethoxy] phenyl) -4,6-bis (4-phenylphenyl) -1,3,5-triazine, TINUVIN477 (trade name, Ciba Japan Ltd. Company, Ltd.)), and the like.
- cyanoacrylate-based ultraviolet absorber examples include UVINUL3008 (trade name, manufactured by BASF Japan Ltd.).
- Specific examples of the salicylate-based ultraviolet absorber include pt-butylphenyl salicylate, p- Octylphenyl salicylate and the like are anthracene ultraviolet absorbers, specifically anthracene and anthracene derivatives, etc.
- indole ultraviolet absorbers are BONASORB UA-3911 and BONASORB UA-3912 (both trade names, both manufactured by Orient Chemical Co., Ltd.) ) Etc.
- examples of the azomethine ultraviolet absorber examples include BONASORB UA-3701 (trade name, manufactured by Orient Chemical Co., Ltd.).
- benzophenone ultraviolet absorber examples include 2,4-dihydroxybenzophenone, 2,2 ′, 3 (or any of 4, 5, 6) -trihydroxybenzophenone, 2,2 ′, 4,4.
- examples include '-tetrahydroxybenzophenone, 2,4-dihydroxy-2', 4'-dimethoxybenzophenone, and 2-hydroxy-4-n-octoxybenzophenone.
- the maximum absorption wavelength of light of these exemplified organic ultraviolet absorbers is in the range of 325 to 425 nm, mostly in the range of 325 to 390 nm, and has the ability to absorb relatively long wavelength ultraviolet rays. Is.
- these ultraviolet absorbers can be used alone or in combination of two or more.
- a benzophenone-based ultraviolet absorber is preferably used from the viewpoint of solubility in the coating solution for forming an ultraviolet absorbing film of the present invention.
- the content of the ultraviolet absorber in the coating solution for forming an ultraviolet absorbing film of the present invention is such that the obtained ultraviolet absorbing film has sufficient ultraviolet absorbing ability and the mechanical strength of the ultraviolet absorbing film is ensured.
- the amount is preferably 1 to 50 parts by mass, more preferably 5 to 40 parts by mass, and particularly preferably 8 to 30 parts by mass with respect to 100 parts by mass of the matrix raw material component.
- a functional group is introduced into the organic ultraviolet absorbent as necessary as an ultraviolet absorbent, and this is a non-hydrolyzable 1 having the functional group. It is also possible to add a reaction product obtained by reacting a hydrolyzable silicon compound having a valent organic group.
- reaction product a reaction product of a benzophenone-based ultraviolet absorber preferably used in the present invention, for example, a hydroxyl group-containing benzophenone compound and an epoxy group-containing hydrolyzable silicon compound (hereinafter referred to as “reaction product”) , Also referred to as “silylated benzophenone compounds”).
- reaction product a hydroxyl group-containing benzophenone compound and an epoxy group-containing hydrolyzable silicon compound
- silylated benzophenone compounds a silylated benzophenone compound
- the silylated benzophenone compound is added to the coating solution for forming an ultraviolet absorbing film, the compound forms a silicon oxide matrix having a crosslinked structure together with the hydrolyzable silicon compound.
- the hydroxyl group-containing benzophenone compound residue derived from the silylated benzophenone compound is fixed to the silicon oxide matrix, and bleed out is prevented.
- the obtained ultraviolet absorbing film can maintain the ultraviolet absorbing ability over a long period of time.
- the benzophenone compound having a hydroxyl group as a raw material of the silylated benzophenone compound may be any compound having a benzophenone skeleton and having a hydroxyl group.
- the following general formula ( A benzophenone compound represented by a) having 2 to 4 hydroxyl groups is preferably used since it has an excellent ultraviolet absorbing ability even after silylation. From the viewpoint of ultraviolet absorbing ability, particularly from the viewpoint of ultraviolet absorbing ability of a long wavelength up to 380 nm, the hydroxyl group-containing benzophenone compound has more preferably 3 or 4 hydroxyl groups.
- Xs may be the same or different and each represents a hydrogen atom or a hydroxyl group, at least one of which is a hydroxyl group.
- benzophenone compounds having a hydroxyl group represented by the general formula (a) 2,4-dihydroxybenzophenone, 2,2 ′, 3-trihydroxybenzophenone, 4, 5, 6 are used in the present invention.
- -Trihydroxybenzophenone, 2,2 ', 4,4'-tetrahydroxybenzophenone and the like are more preferable, and 2,2', 4,4'-tetrahydroxybenzophenone is particularly preferable.
- the hydroxyl group-containing benzophenone compound can be used alone or as a mixture of two or more.
- Examples of the epoxy group-containing hydrolyzable silicon compound used in the reaction for silylating such a hydroxyl group-containing benzophenone compound include trifunctional compounds in which the non-hydrolyzable monovalent organic group having the epoxy group is bonded to a silicon atom. Or a bifunctional hydrolyzable silicon compound is mentioned.
- the epoxy group-containing hydrolyzable silicon compound is particularly preferably 3-glycidoxypropyltrimethoxysilane, 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethylmethyldimethoxysilane and the like are used.
- the epoxy group-containing hydrolyzable silicon compound can be used alone or as a mixture of two or more.
- At least one hydroxyl group-containing benzophenone compound and at least one epoxy group-containing hydrolyzable silicon compound are reacted in the presence of a catalyst as necessary.
- the amount of the epoxy group-containing hydrolyzable silicon compound used in the reaction is not particularly limited, but is preferably 0.5 to 5.0 mol, more preferably 1.0 to 3.3 mol per mol of the hydroxyl group-containing benzophenone compound. 0 mole.
- the amount of the epoxy group-containing hydrolyzable silicon compound relative to 1 mol of the hydroxyl group-containing benzophenone compound is less than 0.5 mol, it is not silylated when it is added to the coating solution for forming an ultraviolet absorbing film of the present invention.
- quaternary ammonium salt as described in JP-A-58-10591 is preferable.
- the quaternary ammonium salt include tetramethylammonium chloride, tetraethylammonium chloride, benzyltrimethylammonium chloride, benzyltriethylammonium chloride and the like.
- the addition amount of the catalyst to the reaction system is not particularly limited, but the addition amount is 0.005 to 10 parts by mass with respect to 100 parts by mass in total of the hydroxyl group-containing benzophenone compound and the epoxy group-containing hydrolyzable silicon compound.
- the amount is preferably, and more preferably 0.01 to 5 parts by mass.
- the amount of the catalyst added is less than 0.005 parts by mass with respect to a total of 100 parts by mass of the hydroxyl group-containing benzophenone compound and the epoxy group-containing hydrolyzable silicon compound, the reaction takes a long time, and when the amount exceeds 10 parts by mass, When this reaction product is added to the coating solution for forming an ultraviolet absorbing film of the present invention, the catalyst may reduce the stability of the coating solution.
- the silylation reaction is carried out by heating a mixture of a hydroxyl group-containing benzophenone compound and an epoxy group-containing hydrolyzable silicon compound, preferably in the above ratio, in the temperature range of 50 to 150 ° C. for 4 to 20 hours in the presence of a catalyst. It can be carried out. This reaction may be carried out in the absence of a solvent or in a solvent that dissolves both the hydroxyl group-containing benzophenone compound and the epoxy group-containing hydrolyzable silicon compound, but it is easy to control the reaction and easy to handle.
- a method using a solvent is preferred. Examples of such a solvent include toluene, xylene, ethyl acetate, butyl acetate and the like.
- the amount of the solvent to be used is about 10 to 300 parts by mass with respect to 100 parts by mass in total of the hydroxyl group-containing benzophenone compound and the epoxy group-containing hydrolyzable silicon compound.
- the silylated benzophenone compound preferably used in the present invention is obtained by reacting 1 to 2 hydroxyl groups of a benzophenone compound containing 3 or more hydroxyl groups with an epoxy group of an epoxy group-containing hydrolyzable silicon compound. More preferably, 4- (2-hydroxy-3- (3-trimethoxysilyl) propoxy) propoxy) -2,2 ′, 4′- represented by the following formula (b): And trihydroxybenzophenone.
- Me represents a methyl group.
- the blending amount thereof is the amount of the hydroxyl group-containing benzophenone compound residue in the silylated benzophenone compound, What is necessary is just to adjust so that it may become content of the ultraviolet absorber shown above.
- the silylated benzophenone compound may be blended as a partially hydrolyzed condensate similar to the hydrolyzable silicon compounds constituting the silicon oxide matrix raw material component, and a part of these hydrolyzable silicon compounds. You may mix
- the ultraviolet absorbing film is formed by curing a silicon oxide matrix raw material component comprising at least one selected from the hydrolyzable silicon compounds contained therein as described below.
- the coating solution for forming an ultraviolet absorbing film of the present invention has a pKa of the first proton (hereinafter referred to as “pKa1” as necessary) of 1.0 to 5.0 as an acid catalyst for promoting the curing. Contains acid.
- pKa1 the first proton
- the obtained ultraviolet absorbing film is sufficiently colorless and transparent, and has sufficient light resistance, particularly preventing photodegradation of ultraviolet absorbing ability. It is possible to do.
- acetic acid is particularly preferable in the present invention. These may be used alone or in combination of two or more.
- the amount of the acid added can be set without particular limitation as long as it can function as a catalyst and can sufficiently ensure the colorless transparency of the ultraviolet absorbing film.
- the molar concentration of the proton when completely dissociated with respect to the total mass of the coating solution is preferably 0.005 to 5.0 mol / kg, preferably 0.01 to 3.5 mol / kg. It is more preferable to contain. If the concentration of the acid used is less than 0.005 mol / kg, the catalyst may not function sufficiently, and if it exceeds 5.0 mol / kg, the hydrolysis rate increases and long-term storage may not be sufficient. is there.
- the coating liquid for forming an ultraviolet absorbing film of the present invention may contain a curing catalyst as necessary in addition to the acid catalyst.
- Curing catalysts include aliphatic carboxylic acids (formic acid, acetic acid, propionic acid, butyric acid, lactic acid, tartaric acid, succinic acid, etc.), alkali metal salts such as lithium salt, sodium salt, potassium salt; benzyltrimethylammonium salt, tetramethylammonium salt Quaternary ammonium salts such as salts and tetraethylammonium salts; metal alkoxides and chelates such as aluminum, titanium and cerium; ammonium perchlorate, ammonium chloride, ammonium sulfate, sodium acetate, imidazoles and their salts, ammonium trifluoromethylsulfonate, Bis (tolufluoromethylsulfonyl) bromomethylammonium and the like can be mentioned.
- the coating solution for forming an ultraviolet absorbing film of the present invention has a silicon oxide matrix raw material component comprising at least one selected from the above hydrolyzable silicon compounds, an ultraviolet absorber and a pKa of the first proton of 1.0 to 5. It contains water for hydrolyzing and polycondensing the hydrolyzable silicon compounds together with 0 acid.
- the amount of water contained in the coating liquid for forming the ultraviolet absorbing film is The amount of the silicon oxide-based matrix raw material component is preferably 2 to 20 equivalents, more preferably 3 to 17.5 equivalents with respect to the SiO 2 equivalent amount. If the amount of water is less than 2 equivalents in the above molar ratio, the hardness of the ultraviolet absorbing film may be reduced, and if it exceeds 20 equivalents, the hydrolysis rate is increased and long-term storage properties may not be sufficient.
- the coating solution for forming an ultraviolet absorbing film of the present invention comprises at least one silicon oxide matrix raw material component selected from the hydrolyzable silicon compounds as essential components, an ultraviolet absorber, and a pKa1 of 1.0 to 1.0.
- various optional compounding agents can be contained as necessary within the range not impairing the effects of the present invention.
- flexibility imparting component In the coating solution for forming an ultraviolet absorbing film of the present invention, flexibility is imparted to a silicon oxide matrix obtained by curing a silicon oxide matrix raw material component comprising at least one selected from the above hydrolyzable silicon compounds. Ingredients (hereinafter, referred to as “flexibility-imparting ingredient”) can be added, which is preferable. The blending of the flexibility-imparting component can contribute to the prevention of cracks in the ultraviolet absorbing film.
- the composition of the flexibility-imparting component is effective regardless of the structure of the silicon oxide matrix raw material component, but the silicon oxide system composed only of the tetrafunctional hydrolyzable silicon compound is particularly effective.
- the matrix may not be sufficiently flexible, and if a combination of a tetrafunctional hydrolyzable silicon compound and a flexibility-imparting component is added to the coating solution for forming an ultraviolet absorbing film, mechanical strength and crack resistance can be improved. An ultraviolet absorbing film excellent in both can be easily produced.
- the flexibility-imparting component examples include silicone resins, acrylic resins, polyester resins, polyurethane resins, hydrophilic organic resins containing polyoxyalkylene groups, various organic resins such as epoxy resins, and organic compounds such as glycerin. it can.
- an organic resin When an organic resin is used as the flexibility-imparting component, its form is preferably liquid or fine particles.
- the organic resin may also be blended in the coating solution for forming an ultraviolet absorbing film as a raw material component of a resin that crosslinks and cures when the silicon oxide matrix raw material component is cured and dried. In this case, as long as the characteristics of the silicon oxide matrix are not hindered, a part of the silicon oxide matrix raw material component and the organic resin raw material component or organic resin which is a flexibility-imparting component partially react to crosslink. Also good.
- the silicone resin is preferably a silicone oil containing various modified silicone oils, and a diorganosilicone containing a hydrolyzable silyl group or a polymerizable group-containing organic group at the end is partially or fully crosslinked.
- examples include silicone rubber.
- hydrophilic organic resin containing a polyoxyalkylene group examples include polyethylene glycol (PEG) and polyether phosphate ester polymers.
- Polyurethane rubber, etc. can be used as the polyurethane resin, and acrylonitrile rubber, homopolymer of alkyl acrylate ester, homopolymer of alkyl methacrylate ester, alkyl acrylate ester and its alkyl acrylate copolymer can be copolymerized.
- Preferred examples include a copolymer with a monomer, a copolymer of an alkyl methacrylate and a monomer copolymerizable with the alkyl methacrylate, and the like.
- polyepoxides are a general term for compounds having a plurality of epoxy groups. That is, the average number of epoxy groups in the polyepoxides is 2 or more, but in the present invention, a polyepoxide having an average number of epoxy groups of 2 to 10 is preferred.
- Such polyepoxides are preferably polyglycidyl compounds such as polyglycidyl ether compounds, polyglycidyl ester compounds, and polyglycidyl amine compounds.
- the polyepoxides may be either aliphatic polyepoxides or aromatic polyepoxides, and aliphatic polyepoxides are preferred. These are compounds having two or more epoxy groups.
- polyglycidyl ether compounds are preferred, and aliphatic polyglycidyl ether compounds are particularly preferred.
- a glycidyl ether of a bifunctional or higher alcohol is preferable, and a glycidyl ether of a trifunctional or higher alcohol is particularly preferable from the viewpoint of improving light resistance.
- These alcohols are preferably aliphatic alcohols, alicyclic alcohols, or sugar alcohols.
- ethylene glycol diglycidyl ether polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, glycerol polyglycidyl ether, diglycerol polyglycidyl ether, polyglycerol poly Examples thereof include glycidyl ether, trimethylolpropane polyglycidyl ether, sorbitol polyglycidyl ether, and pentaerythritol polyglycidyl ether. These may use only 1 type and may use 2 or more types together.
- a poly of an aliphatic polyol having three or more hydroxyl groups such as glycerol polyglycidyl ether, diglycerol polyglycidyl ether, polyglycerol polyglycidyl ether, and sorbitol polyglycidyl ether.
- Glycidyl ether one having an average number of glycidyl groups (epoxy groups) exceeding 2 per molecule is preferred. These may be used alone or in combination of two or more.
- an ultraviolet absorbing film of the present invention among the above-mentioned flexibility-imparting components, it is possible to obtain ultraviolet rays by blending such an epoxy resin, particularly polyepoxides, PEG (polyethylene glycol), glycerin and the like. It is preferable from the viewpoint that sufficient flexibility can be imparted to the absorbent film while maintaining mechanical strength.
- the blending amount of the flexibility imparting component is not particularly limited as long as it is an amount capable of imparting flexibility to the ultraviolet absorbing film and improving crack resistance without impairing the effects of the present invention.
- An amount of 0.1 to 20 parts by mass is preferable with respect to 100 parts by mass of the raw material component, and an amount of 1.0 to 20 parts by mass is more preferable.
- silica fine particles examples of an optional compounding agent that can be contained in the coating solution for forming an ultraviolet absorbing film of the present invention include silica fine particles blended to improve the wear resistance of the ultraviolet absorbing film.
- silica fine particles are blended in a coating solution for forming an ultraviolet absorbing film, it is preferable to blend as colloidal silica.
- Colloidal silica refers to silica fine particles dispersed in water or an organic solvent such as methanol, ethanol, isobutanol, or propylene glycol monomethyl ether.
- colloidal silica can be appropriately blended to produce a coating solution for forming an ultraviolet absorbing film containing silica fine particles.
- colloidal silica is blended with the raw material hydrolyzable silicon compound to perform partial hydrolyzate (co) condensation, and silica fine particle-containing partial hydrolyzate is produced.
- a decomposition (co) condensate can be obtained, and this can be used as the coating solution for forming an ultraviolet absorbing film of the present invention containing silica fine particles.
- silica fine particles are blended as an optional component in the coating solution for forming an ultraviolet absorbing film of the present invention, it is preferable to blend silica fine particles having an average particle diameter (BET method) of 1 to 100 nm.
- BET method average particle diameter
- the average particle diameter exceeds 100 nm, the particles diffusely reflect light, so that the value of the haze value of the obtained ultraviolet absorbing film increases, which may be undesirable in terms of optical quality.
- the average particle size is particularly preferably 5 to 40 nm. This is for imparting abrasion resistance to the ultraviolet absorbing film and maintaining the colorless transparency of the ultraviolet absorbing film.
- colloidal silica can use both a water dispersion type and an organic solvent dispersion type, it is preferable to use an organic solvent dispersion type.
- the colloidal silica may contain inorganic fine particles other than silica fine particles such as alumina sol, titania sol, and ceria sol.
- the blending amount thereof is 100 parts by mass of the silicon oxide matrix raw material component in the coating liquid for forming an ultraviolet absorbing film.
- the amount is preferably 5 to 50 parts by mass, and more preferably 10 to 30 parts by mass.
- the range of the above blending amount maintains the film forming property of the ultraviolet absorbing film while ensuring sufficient wear resistance, and cracks. This is a range of the amount of the silica fine particles that can prevent the generation of colorlessness and the colorless transparency of the ultraviolet absorbing film due to the aggregation of the silica fine particles.
- the above-mentioned pKa1 is 1.0 to 5.5 as an acid catalyst for the purpose of improving the light resistance of the resulting ultraviolet absorbing film, particularly preventing the photoabsorption of the ultraviolet absorbing ability.
- an acid of 0 is used, the hardness, for example, the scratch resistance, may be reduced as compared with the case where a conventionally used strong acid is used.
- the silica fine particles blended to improve the wear resistance of the UV absorbing film function to prevent such deterioration of scratch resistance and maintain the UV absorbing film hardness at a certain level. Is. Specific embodiments and preferred embodiments of the silica fine particles are the same as described above.
- the blending amount of the silica fine particles blended for preventing the deterioration of the scratch resistance is preferably 0.5 to 50 parts by mass, more preferably 1 with respect to 100 parts by mass of the silicon oxide matrix raw material component. 0.0 to 10 parts by mass.
- the silica fine particles in addition to the addition of the silica fine particles, it is further added to hydrolyze / condensate the hydrolyzable silicon compound and the like. It is preferred to increase the amount of water produced. Specifically, the amount of water in this case is preferably 2 to 20 equivalents, more preferably 3 to 17.5 equivalents in terms of molar ratio with respect to the SiO 2 equivalent of the silicon oxide matrix raw material component. A compounding quantity is mentioned.
- the scratch resistance may be lowered.
- silica fine particles are blended in excess of the above upper limit, it may affect the film-forming property of the ultraviolet absorbing film, and if water is blended in excess of the above upper limit, the hydrolysis rate will increase and long-term storage will not be sufficient. There is.
- the coating solution for forming an ultraviolet absorbing film of the present invention may further contain a light stabilizer for the purpose of improving light resistance.
- the light stabilizer is preferably a hindered amine light stabilizer (HALS).
- HALS hindered amine light stabilizer
- the blending amount of the light stabilizer is preferably 0.001 to 0.015 parts by mass, more preferably 100 parts by mass of the silicon oxide matrix raw material component in the coating solution for forming an ultraviolet absorbing film. Is 0.002 to 0.009 parts by mass.
- the coating solution for forming an ultraviolet absorbing film of the present invention may further contain functional fine particles such as indium tin oxide fine particles and antimony tin oxide fine particles and an organic dye for the purpose of imparting functionality.
- the coating solution for forming an ultraviolet absorbing film of the present invention may contain a surfactant as an additive for the purpose of improving the coating property to the substrate and the smoothness of the resulting coating film.
- the coating solution for forming an ultraviolet absorbing film of the present invention may further contain additives such as an antifoaming agent and a viscosity modifier for the purpose of improving the coating property to the substrate, and the adhesion to the substrate.
- additives such as an adhesion-imparting agent may be included.
- the amount of these additives is preferably 0.01 to 2 parts by mass for each additive component with respect to 100 parts by mass of the silicon oxide matrix raw material component in the coating solution for forming an ultraviolet absorbing film.
- the coating liquid for forming an ultraviolet absorbing film of the present invention may contain a dye, a pigment, a filler and the like as long as the object of the present invention is not impaired.
- the coating solution for forming an ultraviolet absorbing film of the present invention usually contains a predetermined amount of the above-mentioned silicon oxide matrix raw material component, an ultraviolet absorber, an acid and water having a pKa1 of 1.0 to 5.0, and an optional component.
- Various additives and the like as compounding agents are prepared in an arbitrary amount and dissolved and dispersed in a solvent. It is necessary that all the non-volatile components in the coating liquid for forming an ultraviolet absorbing film be stably dissolved and dispersed in a solvent.
- the solvent contains at least 20% by mass, preferably 50% by mass or more alcohol. .
- alcohols used in such solvents include methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, 1-methoxy-2-propanol, and 2-ethoxyethanol. 4-methyl-2-pentanol, 2-butoxyethanol and the like are preferable.
- alcohols having a boiling point of 80 to 160 ° C. are preferable from the viewpoint of good solubility of the above-mentioned silicon oxide matrix raw material components and good coatability to the substrate.
- ethanol 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, 1-methoxy-2-propanol, 2-ethoxyethanol, 4-methyl-2- Pentanol and 2-butoxyethanol are preferred.
- the coating solution for forming an ultraviolet absorbing film of the present invention when the coating solution contains a partially hydrolyzed (co) condensate of a hydrolyzable silicon compound, in the production process, When a decomposable silicon compound (for example, alkyltrialkoxysilane) is hydrolyzed, a lower alcohol or the like generated in the hydrolysis, or a colloidal silica dispersed in an organic solvent is used.
- a decomposable silicon compound for example, alkyltrialkoxysilane
- solvents other than alcohol that can be mixed with water / alcohol may be used in combination.
- examples include ketones such as acetone and acetylacetone; esters such as ethyl acetate and isobutyl acetate; ethers such as propylene glycol monomethyl ether, dipropylene glycol monomethyl ether and diisopropyl ether.
- the amount of the solvent used in the coating solution for forming an ultraviolet absorbing film of the present invention is preferably 100 to 1900 parts by weight, and preferably 250 to 900 parts per 100 parts by weight of all nonvolatile components in the coating solution for forming an ultraviolet absorbing film. More preferably, it is part by mass.
- the coating liquid for forming an ultraviolet absorbing film of the present invention contains the hydrolyzable silicon compound itself as the silicon oxide matrix raw material component, these are used for stabilizing the coating liquid during storage and the like.
- a treatment for partial hydrolysis (co) condensation may be performed.
- the partial hydrolysis cocondensation is preferably performed in the presence of the same acid catalyst as described above under the same reaction conditions as described above.
- one or more hydrolyzable silicon compounds are mixed as required, and then the purpose is achieved by stirring for a predetermined time at room temperature in the presence of an acid catalyst having a pKa1 of 1.0 to 5.0. it can.
- the optional compounding agent may be added before the partial hydrolysis cocondensation or after the partial hydrolysis cocondensation. It is preferable to add the catalyst and adjust the pH after the partial hydrolysis cocondensation.
- the ultraviolet-absorbing glass article of the present invention has a glass substrate and an ultraviolet-absorbing film formed on the surface of at least a part of the glass substrate using the coating liquid for forming an ultraviolet-absorbing film of the present invention.
- the material of the glass substrate used in the ultraviolet absorbing glass article of the present invention is not particularly limited, and examples thereof include ordinary soda lime glass, borosilicate glass, non-alkali glass, and quartz glass. Moreover, it is also possible to use the glass base material which absorbs an ultraviolet-ray and infrared rays as a glass base material of the ultraviolet-absorption glass article of this invention.
- the ultraviolet absorbing glass article of the present invention is preferably used for applications in which abrasion resistance is particularly required since the ultraviolet absorbing film is excellent in abrasion resistance.
- Glass plates for sliding windows such as windshields and side windows.
- the ultraviolet-absorbing glass article of the present invention has an ultraviolet-absorbing film formed as described later using the coating liquid for forming an ultraviolet-absorbing film of the present invention having the above-described structure, and contains an ultraviolet absorber, particularly preferably used benzophenone.
- This is an ultraviolet-absorbing glass article in which the transmittance of light having a wavelength of 380 nm is suppressed to a low level due to the ultraviolet-absorbing ability of the ultraviolet absorber.
- the ultraviolet-absorbing glass article of the present invention has a transmittance of light having a wavelength of 380 nm measured using a spectrophotometer (manufactured by Hitachi, Ltd .: U-3500) as a glass plate in terms of a plate thickness of 3.5 mm. Is preferably 7.0% or less, more preferably 4.0% or less, and particularly preferably 1.0% or less.
- the ultraviolet absorbing film of the ultraviolet absorbing glass article of the present invention uses an acid having the above pKa1 of 1.0 to 5.0 as an acid catalyst, and preferably further imparts flexibility such as the above polyepoxides, PEG, glycerin and the like.
- the coating liquid for forming an ultraviolet absorbing film of the present invention containing the above components light of mechanical strength such as crack resistance and ultraviolet absorbing ability is maintained while maintaining the colorless transparency of the ultraviolet absorbing film. It is an ultraviolet absorbing film having durability against light irradiation over a long period of time, that is, light resistance, in which deterioration is prevented.
- the benzophenone ultraviolet absorber preferably used in the present invention as an ultraviolet absorber is used as a silylated benzophenone compound which is a reaction product of a hydroxyl group-containing benzophenone compound and an epoxy group-containing hydrolyzable silicon compound, Since the contained benzophenone compound residue is fixed to the silicon oxide matrix constituting the UV absorbing film, there is little bleed out due to long-term use, and the UV absorbing glass article of the present invention has long-term storage stability with UV absorbing ability. It can be excellent.
- the ultraviolet absorbing film-forming coating solution of the present invention As a specific method for forming the ultraviolet absorbing film-forming coating solution of the present invention on the glass substrate, (A) a step of coating the coating solution on the glass substrate to form a coating film, and (B) Removing the organic solvent from the coating film and curing an at least one silicon oxide matrix raw material component selected from the hydrolyzable silicon compounds to form a cured product to form an ultraviolet absorbing film.
- the method of including is mentioned.
- a coating solution is applied on a glass substrate to form a coating film of the coating solution.
- the film formed here is a film containing the said solvent.
- the coating method of the coating solution on the glass substrate is not particularly limited as long as it is a method of uniform coating, and is a flow coating method, a dip coating method, a spin coating method, a spray coating method, a flexographic printing method, a screen printing method.
- Well-known methods such as a gravure printing method, a roll coating method, a meniscus coating method, and a die coating method can be used.
- the thickness of the coating film of the coating solution is determined in consideration of the thickness of the finally obtained ultraviolet absorbing film.
- step (B) the step of removing the solvent from the coating film of the coating solution on the glass substrate and curing the silicon oxide matrix raw material component such as the hydrolyzable silicon compound to form an ultraviolet absorbing film is included. To be implemented.
- the volatile components are first removed by evaporation after the coating film is formed with the coating solution.
- This removal of volatile components is preferably carried out by heating and / or drying under reduced pressure. It is preferable from the viewpoint of improving the leveling property of the coating film that the coating solution is formed on the glass substrate and then temporarily dried at a temperature of about room temperature to 120 ° C.
- the volatile components are vaporized and removed in parallel with this, so the operation of removing the volatile components is included in the temporary drying.
- the temporary drying time that is, the operation time for removing the volatile components, is preferably about 3 seconds to 2 hours, although it depends on the coating solution used for film formation.
- the volatile component is sufficiently removed, but it may not be completely removed. That is, an organic solvent or the like can remain in the ultraviolet absorbing film as long as the performance of the ultraviolet absorbing film is not affected.
- the silicon oxide matrix raw material components such as the hydrolyzable silicon compound are cured.
- This reaction can be carried out at room temperature or under heating.
- the upper limit of the heating temperature is preferably 200 ° C., and particularly preferably 190 ° C., because the cured product contains an organic component. Since the cured product can be generated even at normal temperature, the lower limit of the heating temperature is not particularly limited. However, when the promotion of the reaction by heating is intended, the lower limit of the heating temperature is preferably 60 ° C, more preferably 80 ° C. Therefore, the heating temperature is preferably 60 to 200 ° C, more preferably 80 to 190 ° C.
- the heating time is preferably from several minutes to several hours, although it depends on the coating solution used for film formation.
- the film thickness of the ultraviolet absorbing film of the ultraviolet absorbing glass article having the ultraviolet absorbing film thus formed using the coating liquid for forming an ultraviolet absorbing film of the present invention is 1.0 to 8.0 ⁇ m.
- the thickness is preferably 1.5 to 7.0 ⁇ m.
- the film thickness of the ultraviolet absorbing film is less than 1.0 ⁇ m, the ultraviolet absorbing effect may be insufficient.
- the film thickness of the ultraviolet absorbing film exceeds 8.0 ⁇ m, cracks may occur when desired wear resistance is exhibited.
- Examples 1 to 10 described below are examples, and examples 11 to 13 are comparative examples.
- the constituent compounds of drugs described by trade names in each example are shown below.
- SR-SEP sorbitol polyglycidyl ether manufactured by Sakamoto Pharmaceutical Co., Ltd.
- Methanol silica sol Colloidal silica in which silica fine particles having an average primary particle size of 10 to 20 nm are dispersed in methanol at a solid content concentration of 30% by mass, manufactured by Nissan Chemical Industries, Ltd.
- Example 1 50.3 g of Solmix AP-1, 12.1 g of tetramethoxysilane, 3.8 g of 3-glycidoxypropyltrimethoxysilane, 11.0 g of the silylated UV absorber solution obtained in the above synthesis example, 11.4 g of acetic acid and 11.4 of ion exchange water were charged to obtain a coating solution 1 for forming an ultraviolet absorbing film.
- a coating solution 1 for forming an ultraviolet absorbing film was applied by a spin coating method and dried in the atmosphere at 180 ° C. for 30 minutes to obtain a glass plate with an ultraviolet absorbing film.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated as follows. The evaluation results are shown in Table 2.
- Spectral characteristics measured with a spectrophotometer (manufactured by Hitachi, Ltd .: U-3500), transmittance of light at a wavelength of 380 nm, visible light transmittance and ultraviolet transmittance calculated according to JIS-R3106 Judged by.
- YI yellowing degree
- a spectrophotometer manufactured by Hitachi, Ltd .: U-3500
- Abrasion resistance Using a Taber type abrasion resistance tester, a wear test of 1000 revolutions was performed with a CS-10F wear wheel by the method described in JIS-R3212 (1998), and the degree of scratches before and after the test was clouded The haze value was measured, and the haze value was increased by [%].
- Accelerated weather resistance test (light resistance evaluation): A specimen is placed on a super xenon weather meter (Suga test machine: SX75), the illumination intensity is 150 W / m 2 (300-400 nm), the black panel temperature is 83 ° C., and the humidity is 50 RH%. After 1000 hours had passed after the specimen was exposed to the above conditions, the transmittance of light having a wavelength of 380 nm to the specimen was measured, and cracks were determined by the same method as in 2) above.
- Example 2 52.2 g of Solmix AP-1, 12.1 g of tetramethoxysilane, 3.8 g of 3-glycidoxypropyltrimethoxysilane, 11.0 g of the silylated UV absorber solution obtained in the above synthesis example, 9.5 g of lactic acid and 11.4 g of ion-exchanged water were charged to obtain a coating solution 2 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 2 was used instead of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 3 61.5 g of Solmix AP-1, 12.1 g of tetramethoxysilane, 3.8 g of 3-glycidoxypropyltrimethoxysilane, 11.0 g of the silylated UV absorber solution obtained in the above synthesis example, 0.2 g of malonic acid and 11.4 g of ion-exchanged water were charged to obtain a coating solution 3 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 3 was used in place of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 4 52.5 g of Solmix AP-1, 11.3 g of tetramethoxysilane, 3.6 g of 3-glycidoxypropyltrimethoxysilane, 10.3 g of the silylated UV absorber solution obtained in the above synthesis example, As polyepoxide, 0.9 g of SR-SEP, 10.7 g of acetic acid, and 10.7 g of ion-exchanged water were charged to obtain a coating solution 4 for forming an ultraviolet absorbing film. A glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 4 was used instead of the coating solution 1. The characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 5 52.1 g of Solmix AP-1, 11.4 g of tetramethoxysilane, 3.7 g of 3-glycidoxypropyltrimethoxysilane, 10.5 g of the silylated UV absorber solution obtained in the above synthesis example, 0.7 g of glycerin, 10.8 g of acetic acid, and 10.8 g of ion-exchanged water were charged to obtain a coating solution 5 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 5 was used instead of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 6 52.5 g of Solmix AP-1, 11.3 g of tetramethoxysilane, 3.6 g of 3-glycidoxypropyltrimethoxysilane, 10.3 g of the silylated UV absorber solution obtained in the above synthesis example, 0.9 g of polyethylene glycol 400 (manufactured by Kanto Chemical Co., Inc.), 10.7 g of acetic acid, and 10.7 g of ion-exchanged water were charged to obtain a coating solution 6 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 6 was used instead of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 7 45.0 g of Solmix AP-1, 10.5 g of tetramethoxysilane, 3.5 g of 3-glycidoxypropyltrimethoxysilane, 10.2 g of the silylated UV absorber solution obtained in the above synthesis example, 0.8 g of SR-SEP as polyepoxide, 1.5 g of methanol silica sol as colloidal silica, 9.9 g of acetic acid, and 18.6 g of ion-exchanged water were charged to obtain a coating solution 7 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 7 was used instead of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 8 61.7 g of Solmix AP-1, 12.1 g of tetramethoxysilane, 3.8 g of 3-glycidoxypropyltrimethoxysilane, 11.0 g of the silylated UV absorber solution obtained in the above synthesis example, Shu 4.8 g of 1% acid aqueous solution and 6.7 g of ion-exchanged water were charged to obtain a coating solution 8 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 8 was used in place of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 9 40.5 g of Solmix AP-1, 16.0 g of tetramethoxysilane, 10.6 g of 3-glycidoxypropyltrimethoxysilane, 2.7 g of 2,2 ′, 4,4′-tetrahydroxybenzophenone, 15.1 g of acetic acid and 15.1 g of ion-exchanged water were charged to obtain a coating solution 9 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 9 was used instead of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 10 (Example 10) 30.4 g of Solmix AP-1, 31.0 g of tetraethoxysilane, 3.9 g of 2,2 ′, 4,4′-tetrahydroxybenzophenone, 3.2 g of polyethylene glycol 400 (manufactured by Kanto Chemical Co., Inc.) 10.2 g of acetic acid and 21.4 g of ion-exchanged water were charged to obtain a coating solution 10 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 10 was used instead of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 11 61.8 g of Solmix AP-1, 12.1 g of tetramethoxysilane, 3.8 g of 3-glycidoxypropyltrimethoxysilane, 11.0 g of the silylated UV absorber solution obtained in the above synthesis example, 2.4 g of a 10% sulfuric acid aqueous solution and 9.3 ion-exchanged water were charged to obtain a coating solution 11 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 11 was used instead of the coating solution 1. The characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- membrane since the crack generate
- Example 12 61.6 g of Solmix AP-1, 12.1 g of tetramethoxysilane, 3.8 g of 3-glycidoxypropyltrimethoxysilane, 11.0 g of the silylated UV absorber solution obtained in the above synthesis example, 1.3 g of a 10% nitric acid aqueous solution and 10.2 g of ion-exchanged water were charged to obtain a coating solution 12 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was prepared in the same manner as in Example 1 except that the coating solution 12 was used instead of the coating solution 1.
- the characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Example 13 17.4 g of Solmix AP-1, 19.1 g of tetramethoxysilane, 12.7 g of 3-glycidoxypropyltrimethoxysilane, 3.2 g of 2,2 ′, 4,4′-tetrahydroxybenzophenone, 48.4 g of 0.1N nitric acid (manufactured by Junsei Kagaku) was charged to obtain a coating solution 13 for forming an ultraviolet absorbing film.
- a glass plate with an ultraviolet absorbing film was produced in the same manner as in Example 1 except that the coating solution 13 was used instead of the coating solution 1. The characteristics of the obtained glass plate with an ultraviolet absorbing film were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 2.
- Table 1 summarizes the compositions of the coating solutions for forming an ultraviolet absorbing film obtained in Examples 1 to 13.
- the abbreviations of the compounds used indicate the following compounds.
- TMOS tetramethoxysilane
- TEOS tetraethoxysilane
- GPTMS 3-glycidoxypropyltrimethoxysilane
- Si-THBP Silylated ultraviolet absorber obtained in the synthesis example
- THBP 2,2 ′, 4,4′-tetrahydroxybenzophenone
- -PEG400 Polyethylene glycol 400.
- the amount of the ultraviolet absorber shown in Table 1 indicates the amount of the portion derived from THBP in Si-THBP.
- the ultraviolet absorbing films prepared in Comparative Examples 11 to 13 have an ultraviolet absorbing ability, but are inferior in colorless transparency and have insufficient resistance to photodegradation of the ultraviolet absorbing ability.
- the ultraviolet absorbing films prepared in Examples 1 to 10 which are examples, are excellent in ultraviolet absorbing ability, excellent in mechanical properties such as wear resistance and crack resistance, and sufficiently ensure colorless transparency. Therefore, there is little deterioration of the ultraviolet absorption ability due to long exposure.
- the UV-absorbing glass article of the present invention has excellent UV-absorbing properties and mechanical strength, and is excellent in weather resistance and durability. It can also be applied to parts that require high mechanical durability and weather resistance.
- the entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2010-1111813 filed on May 14, 2010 are incorporated herein by reference. .
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Abstract
Description
[1]加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる酸化ケイ素系マトリクス原料成分と、紫外線吸収剤と、第一プロトンのpKaが1.0~5.0の酸と、水とを含有する紫外線吸収膜形成用塗布液。
[2]前記酸を、該酸の第一プロトンが完全に解離したときのプロトンの塗布液全質量に対するモル濃度として0.005~5.0モル/kgとなる割合で含有する[1]に記載の紫外線吸収膜形成用塗布液。
[3]前記酸が、酢酸、乳酸、マレイン酸、マロン酸およびシュウ酸からなる群から選ばれる少なくとも1種である[1]または[2]に記載の紫外線吸収膜形成用塗布液。
[4]前記酸化ケイ素系マトリクス原料成分の主成分として部分加水分解縮合物を含んでいてもよい4官能性加水分解性ケイ素化合物を含有し、さらに可撓性付与成分を含有する、[1]~[3]のいずれかに記載の紫外線吸収膜形成用塗布液。
[5]前記酸化ケイ素系マトリクス原料成分の主成分として、それぞれ部分加水分解縮合物および/または両者の部分加水分解共縮合物を含んでいてもよい、4官能性加水分解性ケイ素化合物および3官能性加水分解性ケイ素化合物を含有する、[1]~[4]のいずれかに記載の紫外線吸収膜形成用塗布液。
[6]前記紫外線吸収剤がベンゾフェノン系紫外線吸収剤である、[1]~[5]のいずれかに記載の紫外線吸収膜形成用塗布液。
[7]前記ベンゾフェノン系紫外線吸収剤が、水酸基含有ベンゾフェノン系化合物とエポキシ基含有加水分解性ケイ素化合物とが反応して得られる加水分解性ケイ素化合物である[6]に記載の紫外線吸収膜形成用塗布液。
[8]前記紫外線吸収剤の含有量が前記酸化ケイ素系マトリクス原料成分100質量部に対して1~50質量部である、[1]~[7]のいずれか1項に記載の紫外線吸収膜形成用塗布液。
[9]前記水の含有量が前記酸化ケイ素系マトリクス原料成分のSiO2換算量に対してモル比で1~20当量である[1]~[8]のいずれかに記載の紫外線吸収膜形成用塗布液。
[10]シリカ微粒子をさらに含有する[1]~[9]のいずれかに記載の紫外線吸収膜形成用塗布液。
[11]前記シリカ微粒子の含有量が前記酸化ケイ素系マトリクス原料成分100質量部に対して0.5~50質量部である[10]に記載の紫外線吸収膜形成用塗布液。
[12]塗布液全質量に対する前記酸化ケイ素系マトリクス原料成分の含有量が、該成分に含まれるケイ素原子をSiO2に換算したときのSiO2含有量として、1~20質量%である、[1]~[11]のいずれかに記載の紫外線吸収膜形成用塗布液。
[13]ガラス基材と、前記ガラス基材の少なくとも一部の表面に[1]~[12]のいずれかに記載の紫外線吸収膜形成用塗布液を用いて形成された紫外線吸収膜とを有する紫外線吸収ガラス物品。
[本発明の紫外線吸収膜形成用塗布液]
紫外線吸収膜形成用塗布液は、加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる酸化ケイ素系マトリクス原料成分と、紫外線吸収剤と、第一プロトンのpKaが1.0~5.0の酸と、水とを含有する。
本発明の紫外線吸収膜形成用塗布液が含有する酸化ケイ素系マトリクス原料成分は、加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる。本明細書において、加水分解性ケイ素化合物類とは、少なくとも1個の加水分解性基がケイ素原子に結合したシラン化合物群およびこのようなシラン化合物群の1種または2種以上の部分加水分解(共)縮合物の総称として用いる。また、加水分解性ケイ素化合物の官能性の数は、ケイ素原子に結合した加水分解性基の数をいう。
ビニルトリメトキシシラン、ビニルトリエトキシシラン、ビニルトリアセトキシシラン、ビニルトリス(2-メトキシエトキシ)シラン、ビニルトリイソプロペノキシシラン、p-スチリルトリメトキシシラン、3-グリシドキシプロピルトリメトキシシラン、3-グリシドキシプロピルトリエトキシシラン、5,6-エポキシへキシルトリメトキシシラン、9,10-エポキシデシルトリメトキシシラン、2-(3,4-エポキシシクロヘキシル)エチルトリメトキシシラン、2-(3,4-エポキシシクロヘキシル)エチルトリエトキシシラン、N-(2-アミノエチル)-3-アミノプロピルトリメトキシシラン、N-(2-アミノエチル)-3-アミノプロピルトリエトキシシラン、3-アミノプロピルトリメトキシシラン、3-アミノプロピルトリエトキシシラン、3-ウレイドプロピルトリエトキシシラン、3-メタクリロキシプロピルトリメトキシシラン、3-メタクリロキシプロピルトリエトキシシラン、3-アクリロキシプロピルトリメトキシシラン、ジ-(3-メタクリロキシ)プロピルトリエトキシシラン、3-イソシアネートプロピルトリエトキシシラン、3-クロロプロピルトリメトキシシラン、3-クロロプロピルトリエトキシシラン、3-クロロプロピルトリプロポキシシラン、3,3,3-トリフロロプロピルトリメトキシシラン、3-メルカプトプロピルトリメトキシシラン、3-メルカプトプロピルトリエトキシシラン、2-シアノエチルトリメトキシシラン等を挙げることができる。
2官能性加水分解性ケイ素化合物は、2個の加水分解性基と2個の非加水分解性基がケイ素原子に結合した化合物である。加水分解性基の2個は互いに同一であっても異なっていてもよい。加水分解性基は、好ましくはアルコキシ基であり、より好ましくは炭素数4以下のアルコキシ基、さらに好ましくはメトキシ基とエトキシ基である。
本発明の紫外線吸収膜形成用塗布液は、これを用いて形成される膜が紫外線吸収膜として機能するように、紫外線吸収剤を含有する。本発明の紫外線吸収膜形成用塗布液においては、酸触媒を特定なものとすることで、紫外線吸収剤の光による劣化を防止し、長期使用を可能としたものである。
本発明の紫外線吸収膜形成用塗布液においては、これが含有する上記加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる酸化ケイ素系マトリクス原料成分を、後述の通り硬化させることで紫外線吸収膜を形成する。本発明の紫外線吸収膜形成用塗布液は、この硬化を促進するための酸触媒として第一プロトンのpKa(以下、必要に応じて「pKa1」と表記する)が1.0~5.0の酸を含有する。本発明においては、酸触媒としてこのような酸を用いることで、得られる紫外線吸収膜の無色透明性を十分に確保するとともに、十分な耐光性を保持する、特に紫外線吸収能の光劣化を防止することを可能としている。
本発明の紫外線吸収膜形成用塗布液は、上記加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる酸化ケイ素系マトリクス原料成分、紫外線吸収剤および第一プロトンのpKaが1.0~5.0の酸とともに、上記加水分解性ケイ素化合物類を加水分解・縮重合させるための水を含有する。
なお、シリカ微粒子として後述する水分散型コロイダルシリカを用いた場合や上記紫外線吸収剤が水分散体として用いられる場合には、これらの水も紫外線吸収膜形成用塗布液に含まれる水として扱われる。
また、本発明の紫外線吸収膜形成用塗布液は、必須成分である上記加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる酸化ケイ素系マトリクス原料成分、紫外線吸収剤、pKa1が1.0~5.0の酸および水以外に、本発明の効果を損なわない範囲において、必要に応じて、種々の任意の配合剤を含有することができる。
本発明の紫外線吸収膜形成用塗布液においては、上記加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる酸化ケイ素系マトリクス原料成分が硬化して得られる酸化ケイ素系マトリクスに可撓性を付与する成分(以下、「可撓性付与成分」という。)を配合することが可能であり、好ましい。可撓性付与成分の配合は、紫外線吸収膜におけるクラック発生の防止に寄与することが可能である。
可撓性付与成分として有機樹脂を用いる場合、その形態としては、液状、微粒子などが好ましい。有機樹脂は、また、上記酸化ケイ素系マトリクス原料成分の硬化・乾燥等の際に、架橋・硬化するような樹脂の原料成分として、紫外線吸収膜形成用塗布液に配合してもよい。この場合、酸化ケイ素系マトリクスの特性を阻害しない範囲で、上記酸化ケイ素系マトリクス原料成分の一部と可撓性付与成分である有機樹脂原料成分や有機樹脂が部分的に反応して架橋してもよい。
本発明の紫外線吸収膜形成用塗布液が含有可能な任意の配合剤として、紫外線吸収膜の耐摩耗性を向上させるために配合されるシリカ微粒子が挙げられる。シリカ微粒子を紫外線吸収膜形成用塗布液に配合する場合には、コロイダルシリカとして配合することが好ましい。なお、コロイダルシリカとは、シリカ微粒子が、水またはメタノール、エタノール、イソブタノール、プロピレングリコールモノメチルエーテル等の有機溶媒中に分散されたものをいう。本発明の紫外線吸収膜形成用塗布液製造の際にコロイダルシリカを適宜配合して、シリカ微粒子を含む紫外線吸収膜形成用塗布液を製造することができる。また、加水分解性ケイ素化合物の部分加水分解(共)縮合物を製造する場合、その原料加水分解性ケイ素化合物にコロイダルシリカを配合して部分加水分解(共)縮合を行い、シリカ微粒子含有部分加水分解(共)縮合物を得ることができ、これを用いてシリカ微粒子を含む本発明の紫外線吸収膜形成用塗布液とすることも可能である。
本発明の紫外線吸収ガラス物品は、ガラス基材と、前記ガラス基材の少なくとも一部の表面に上記本発明の紫外線吸収膜形成用塗布液を用いて形成された紫外線吸収膜とを有する。
・SR-SEP:阪本薬品工業社製、ソルビトール系ポリグリシジルエーテル。
・ソルミックスAP-1:日本アルコール販売社製、エタノール:イソプロピルアルコール:メタノール=85:10:5(質量比)の混合溶媒。
・メタノールシリカゾル:日産化学工業社製、平均一次粒径10~20nmのシリカ微粒子を固形分濃度30質量%でメタノールに分散させたコロイダルシリカ。
2,2’,4,4’-テトラヒドロキシベンゾフェノン(BASF社製)49.2g、3-グリシドキシプロピルトリメトキシシラン(信越化学社製)47.3g、塩化ベンジルトリエチルアンモニウム(純正化学社製)0.8g、酢酸ブチル(純正化学社製)100gを仕込み攪拌しながら60℃に昇温し、溶解させ、120℃まで加熱し4時間反応させることにより上記式(b)に示される4-(2-ヒドロキシ-3-(3-トリメトキシシリル)プロポキシ)プロポキシ)-2,2’,4’-トリヒドロキシベンゾフェノン(Si-THBP)を固形分濃度49質量%で含有するシリル化紫外線吸収剤溶液を得た。なお、シリル化紫外線吸収剤溶液中の4-(2-ヒドロキシ-3-(3-トリメトキシシリル)プロポキシ)プロポキシ)-2,2’,4’-トリヒドロキシベンゾフェノンのうち、51質量%が2,2’,4,4’-テトラヒドロキシベンゾフェノンに由来する。
ソルミックスAP-1の50.3g、テトラメトキシシランの12.1g、3-グリシドキシプロピルトリメトキシシランの3.8g、上記合成例で得られたシリル化紫外線吸収剤溶液の11.0g、酢酸の11.4g、イオン交換水の11.4を仕込み、紫外線吸収膜形成用塗布液1を得た。
1)膜厚:走査型電子顕微鏡(日立製作所製:S-800)によって紫外線吸収膜の断面観察を行い、得られた観察像より膜厚[nm]を得た。
5)耐摩耗性:テーバー式耐摩耗試験機を用い、JIS-R3212(1998年)に記載の方法によって、CS-10F摩耗ホイールで1000回転の摩耗試験を行い、試験前後の傷の程度を曇価(ヘイズ値)によって測定し、曇価の増加量[%]で評価した。
ソルミックスAP-1の52.2g、テトラメトキシシランの12.1g、3-グリシドキシプロピルトリメトキシシランの3.8g、上記合成例で得られたシリル化紫外線吸収剤溶液の11.0g、乳酸の9.5g、イオン交換水の11.4gを仕込み、紫外線吸収膜形成用塗布液2を得た。塗布液1に代えて上記塗布液2を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の61.5g、テトラメトキシシランの12.1g、3-グリシドキシプロピルトリメトキシシランの3.8g、上記合成例で得られたシリル化紫外線吸収剤溶液の11.0g、マロン酸の0.2g、イオン交換水の11.4gを仕込み、紫外線吸収膜形成用塗布液3を得た。塗布液1に代えて上記塗布液3を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の52.5g、テトラメトキシシランの11.3g、3-グリシドキシプロピルトリメトキシシランの3.6g、上記合成例で得られたシリル化紫外線吸収剤溶液の10.3g、ポリエポキシドとしてSR-SEPの0.9g、酢酸の10.7g、イオン交換水の10.7gを仕込み、紫外線吸収膜形成用塗布液4を得た。塗布液1に代えて上記塗布液4を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の52.1g、テトラメトキシシランの11.4g、3-グリシドキシプロピルトリメトキシシランの3.7g、上記合成例で得られたシリル化紫外線吸収剤溶液の10.5g、グリセリンの0.7g、酢酸の10.8g、イオン交換水の10.8gを仕込み、紫外線吸収膜形成用塗布液5を得た。塗布液1に代えて上記塗布液5を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の52.5g、テトラメトキシシランの11.3g、3-グリシドキシプロピルトリメトキシシランの3.6g、上記合成例で得られたシリル化紫外線吸収剤溶液の10.3g、ポリエチレングリコール400(関東化学社製)の0.9g、酢酸の10.7g、イオン交換水の10.7gを仕込み、紫外線吸収膜形成用塗布液6を得た。塗布液1に代えて上記塗布液6を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の45.0g、テトラメトキシシランの10.5g、3-グリシドキシプロピルトリメトキシシランの3.5g、上記合成例で得られたシリル化紫外線吸収剤溶液の10.2g、ポリエポキシドとしてSR-SEPの0.8g、コロイダルシリカとしてメタノールシリカゾルの1.5g、酢酸の9.9g、イオン交換水の18.6gを仕込み、紫外線吸収膜形成用塗布液7を得た。塗布液1に代えて上記塗布液7を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の61.7g、テトラメトキシシランの12.1g、3-グリシドキシプロピルトリメトキシシラン3.8g、上記合成例で得られたシリル化紫外線吸収剤溶液の11.0g、シュウ酸1%水溶液の4.8g、イオン交換水の6.7gを仕込み、紫外線吸収膜形成用塗布液8を得た。塗布液1に代えて上記塗布液8を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の40.5g、テトラメトキシシランの16.0g、3-グリシドキシプロピルトリメトキシシランの10.6g、2,2’,4,4’-テトラヒドロキシベンゾフェノンの2.7g、酢酸の15.1g、イオン交換水の15.1gを仕込み、紫外線吸収膜形成用塗布液9を得た。塗布液1に代えて上記塗布液9を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の30.4g、テトラエトキシシランの31.0g、2,2’,4,4’-テトラヒドロキシベンゾフェノンの3.9g、ポリエチレングリコール400(関東化学社製)の3.2g、酢酸の10.2g、イオン交換水の21.4gを仕込み、紫外線吸収膜形成用塗布液10を得た。塗布液1に代えて上記塗布液10を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の61.8g、テトラメトキシシランの12.1g、3-グリシドキシプロピルトリメトキシシランの3.8g、上記合成例で得られたシリル化紫外線吸収剤溶液の11.0g、硫酸10%水溶液の2.4g、イオン交換水の9.3を仕込み、紫外線吸収膜形成用塗布液11を得た。塗布液1に代えて上記塗布液11を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。なお、この紫外線吸収膜付きガラス板につき、クラック試験を行なった後、紫外線吸収膜にクラックが発生したため、促進耐候性試験としての透過率変化の測定は行なわなかった。
ソルミックスAP-1の61.6g、テトラメトキシシランの12.1g、3-グリシドキシプロピルトリメトキシシランの3.8g、上記合成例で得られたシリル化紫外線吸収剤溶液の11.0g、硝酸10%水溶液の1.3g、イオン交換水の10.2gを仕込み、紫外線吸収膜形成用塗布液12を得た。塗布液1に代えて上記塗布液12を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。
ソルミックスAP-1の17.4g、テトラメトキシシランの19.1g、3-グリシドキシプロピルトリメトキシシランの12.7g、2,2’,4,4’-テトラヒドロキシベンゾフェノンの3.2g、0.1N硝酸(純正化学製)の48.4gを仕込み、紫外線吸収膜形成用塗布液13を得た。塗布液1に代えて上記塗布液13を使用した以外は例1と同様にして、紫外線吸収膜付きガラス板を作製した。得られた紫外線吸収膜付きガラス板の特性を例1と同様に評価した。評価結果を表2に示す。なお、この紫外線吸収膜付きガラス板につき、クラック試験を行なった後、紫外線吸収膜にクラックが発生したため、促進耐候性試験としての透過率変化の測定は行なわなかった。
・TMOS:テトラメトキシシラン、
・TEOS:テトラエトキシシラン、
・GPTMS:3-グリシドキシプロピルトリメトキシシラン、
・Si-THBP:合成例で得られたシリル化紫外線吸収剤、
・THBP:2,2’,4,4’-テトラヒドロキシベンゾフェノン、
・PEG400:ポリエチレングリコール400。
また、紫外線吸収剤としてSi-THBPを用いた場合には、表1の紫外線吸収剤の量は、Si-THBP中のTHBPに由来する部分の量を示すものである。
なお、2010年5月14日に出願された日本特許出願2010-111813号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の開示として取り入れるものである。
Claims (13)
- 加水分解性ケイ素化合物類から選ばれる少なくとも1種からなる酸化ケイ素系マトリクス原料成分と、紫外線吸収剤と、第一プロトンのpKaが1.0~5.0の酸と、水とを含有する紫外線吸収膜形成用塗布液。
- 前記酸を、該酸の第一プロトンが完全に解離したときのプロトンの塗布液全質量に対するモル濃度として0.005~5.0モル/kgとなる割合で含有する、請求項1に記載の紫外線吸収膜形成用塗布液。
- 前記酸が、酢酸、乳酸、マレイン酸、マロン酸およびシュウ酸からなる群から選ばれる少なくとも1種である、請求項1または2に記載の紫外線吸収膜形成用塗布液。
- 前記酸化ケイ素系マトリクス原料成分の主成分として部分加水分解縮合物を含んでいてもよい4官能性加水分解性ケイ素化合物を含有し、さらに可撓性付与成分を含有する、請求項1~3のいずれか1項に記載の紫外線吸収膜形成用塗布液。
- 前記酸化ケイ素系マトリクス原料成分の主成分として、それぞれ部分加水分解縮合物および/または両者の部分加水分解共縮合物を含んでいてもよい、4官能性加水分解性ケイ素化合物および3官能性加水分解性ケイ素化合物を含有する、請求項1~4のいずれか1項に記載の紫外線吸収膜形成用塗布液。
- 前記紫外線吸収剤がベンゾフェノン系紫外線吸収剤である、請求項1~5のいずれか1項に記載の紫外線吸収膜形成用塗布液。
- 前記ベンゾフェノン系紫外線吸収剤が、水酸基含有ベンゾフェノン系化合物とエポキシ基含有加水分解性ケイ素化合物とが反応して得られる加水分解性ケイ素化合物である、請求項6に記載の紫外線吸収膜形成用塗布液。
- 前記紫外線吸収剤の含有量が前記酸化ケイ素系マトリクス原料成分100質量部に対して1~50質量部である、請求項1~7のいずれか1項に記載の紫外線吸収膜形成用塗布液。
- 前記水の含有量が前記酸化ケイ素系マトリクス原料成分のSiO2換算量に対してモル比で1~20当量である、請求項1~8のいずれか1項に記載の紫外線吸収膜形成用塗布液。
- シリカ微粒子をさらに含有する、請求項1~9のいずれか1項に記載の紫外線吸収膜形成用塗布液。
- 前記シリカ微粒子の含有量が前記酸化ケイ素系マトリクス原料成分100質量部に対して0.5~50質量部である、請求項10に記載の紫外線吸収膜形成用塗布液。
- 塗布液全質量に対する前記酸化ケイ素系マトリクス原料成分の含有量が、該成分に含まれるケイ素原子をSiO2に換算したときのSiO2含有量として、1~20質量%である、請求項1~11のいずれか1項に記載の紫外線吸収膜形成用塗布液。
- ガラス基材と、前記ガラス基材の少なくとも一部の表面に請求項1~12のいずれか1項に記載の紫外線吸収膜形成用塗布液を用いて形成された紫外線吸収膜とを有する紫外線吸収ガラス物品。
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WO2015166863A1 (ja) * | 2014-04-28 | 2015-11-05 | 旭硝子株式会社 | 液状組成物およびガラス物品 |
WO2015166858A1 (ja) * | 2014-04-28 | 2015-11-05 | 旭硝子株式会社 | 液状組成物および抗菌性物品 |
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JPWO2015170647A1 (ja) * | 2014-05-08 | 2017-04-20 | 旭硝子株式会社 | ガラス物品 |
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CN102892851A (zh) | 2013-01-23 |
JPWO2011142463A1 (ja) | 2013-07-22 |
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