WO2022079899A1 - 低干渉縞光学物品およびそのコーティング剤組成物 - Google Patents
低干渉縞光学物品およびそのコーティング剤組成物 Download PDFInfo
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- WO2022079899A1 WO2022079899A1 PCT/JP2020/039106 JP2020039106W WO2022079899A1 WO 2022079899 A1 WO2022079899 A1 WO 2022079899A1 JP 2020039106 W JP2020039106 W JP 2020039106W WO 2022079899 A1 WO2022079899 A1 WO 2022079899A1
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- Prior art keywords
- silane coupling
- hard coat
- coupling agent
- layer
- coat layer
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- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OAVPBWLGJVKEGZ-UHFFFAOYSA-N tributoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCCCC)(OCCCC)OCCCC)CCC2OC21 OAVPBWLGJVKEGZ-UHFFFAOYSA-N 0.000 description 1
- FQYWWLSIKWDAEC-UHFFFAOYSA-N tributoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCCCO[Si](OCCCC)(OCCCC)CCCOCC1CO1 FQYWWLSIKWDAEC-UHFFFAOYSA-N 0.000 description 1
- UNKMHLWJZHLPPM-UHFFFAOYSA-N triethoxy(oxiran-2-ylmethoxymethyl)silane Chemical compound CCO[Si](OCC)(OCC)COCC1CO1 UNKMHLWJZHLPPM-UHFFFAOYSA-N 0.000 description 1
- OHKFEBYBHZXHMM-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)C(CCC)OCC1CO1 OHKFEBYBHZXHMM-UHFFFAOYSA-N 0.000 description 1
- SJQPASOTJGFOMU-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)C(C)OCC1CO1 SJQPASOTJGFOMU-UHFFFAOYSA-N 0.000 description 1
- NFRRMEMOPXUROM-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)C(CC)OCC1CO1 NFRRMEMOPXUROM-UHFFFAOYSA-N 0.000 description 1
- UDUKMRHNZZLJRB-UHFFFAOYSA-N triethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCC)(OCC)OCC)CCC2OC21 UDUKMRHNZZLJRB-UHFFFAOYSA-N 0.000 description 1
- FVMMYGUCXRZVPJ-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CC(CC)OCC1CO1 FVMMYGUCXRZVPJ-UHFFFAOYSA-N 0.000 description 1
- RWJUTPORTOUFDY-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCOCC1CO1 RWJUTPORTOUFDY-UHFFFAOYSA-N 0.000 description 1
- NLKPPXKQMJDBFO-UHFFFAOYSA-N triethoxy-[3-(7-oxabicyclo[4.1.0]heptan-4-yl)propyl]silane Chemical compound C1C(CCC[Si](OCC)(OCC)OCC)CCC2OC21 NLKPPXKQMJDBFO-UHFFFAOYSA-N 0.000 description 1
- KPNCYSTUWLXFOE-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CCC(C)OCC1CO1 KPNCYSTUWLXFOE-UHFFFAOYSA-N 0.000 description 1
- PSUKBUSXHYKMLU-UHFFFAOYSA-N triethoxy-[4-(7-oxabicyclo[4.1.0]heptan-4-yl)butyl]silane Chemical compound C1C(CCCC[Si](OCC)(OCC)OCC)CCC2OC21 PSUKBUSXHYKMLU-UHFFFAOYSA-N 0.000 description 1
- GSUGNQKJVLXBHC-UHFFFAOYSA-N triethoxy-[4-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCCOCC1CO1 GSUGNQKJVLXBHC-UHFFFAOYSA-N 0.000 description 1
- LFBULLRGNLZJAF-UHFFFAOYSA-N trimethoxy(oxiran-2-ylmethoxymethyl)silane Chemical compound CO[Si](OC)(OC)COCC1CO1 LFBULLRGNLZJAF-UHFFFAOYSA-N 0.000 description 1
- FFJVMNHOSKMOSA-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCCC([Si](OC)(OC)OC)OCC1CO1 FFJVMNHOSKMOSA-UHFFFAOYSA-N 0.000 description 1
- FNBIAJGPJUOAPB-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)C(CC)OCC1CO1 FNBIAJGPJUOAPB-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- KKFKPRKYSBTUDV-UHFFFAOYSA-N trimethoxy-[2-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CO[Si](OC)(OC)CC(CC)OCC1CO1 KKFKPRKYSBTUDV-UHFFFAOYSA-N 0.000 description 1
- HTVULPNMIHOVRU-UHFFFAOYSA-N trimethoxy-[2-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CC(C)OCC1CO1 HTVULPNMIHOVRU-UHFFFAOYSA-N 0.000 description 1
- ZOWVSEMGATXETK-UHFFFAOYSA-N trimethoxy-[4-(7-oxabicyclo[4.1.0]heptan-4-yl)butyl]silane Chemical compound C1C(CCCC[Si](OC)(OC)OC)CCC2OC21 ZOWVSEMGATXETK-UHFFFAOYSA-N 0.000 description 1
- GUKYSRVOOIKHHB-UHFFFAOYSA-N trimethoxy-[4-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CO[Si](OC)(OC)CCCCOCC1CO1 GUKYSRVOOIKHHB-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
-
- 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
- C09D5/002—Priming 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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
Definitions
- the present invention relates to an optical article such as a spectacle lens, particularly an optical article in which the generation of interference fringes is suppressed, and a coating agent composition used for such an optical article.
- Optical articles such as eyeglass lenses have a laminated structure in which an antireflection layer, an antifouling layer, etc. are coated on a glass or plastic base material.
- a plastic base material is often used to reduce the weight of eyeglasses, but since the surface of the plastic base material is easily scratched, a hard coat layer is formed to protect the surface.
- it is required to appropriately set the thickness and the refractive index of each member.
- Patent Document 1 describes a problem that interference fringes are generated due to a difference in refractive index between a transparent substrate film such as PET film and a transparent hard coat layer and a slight variation in thickness, resulting in deterioration of visibility. It is described that fine particles of metal oxides such as zirconium oxide and titanium oxide are blended as a high refractive index in the coating agent, and the reflectance is matched with the reflectance of the easy-adhesion layer of the PET film to eliminate interference fringes. There is. However, since fine particles of metal oxides such as zirconium oxide and titanium oxide are expensive, there is a problem that the manufacturing cost is high.
- Patent Document 2 discloses a spectacle lens in which a functional layer including a hard coat layer having a constant refractive index and a primer layer having a constant refractive index is formed on a plastic base material.
- a functional layer including a hard coat layer having a constant refractive index and a primer layer having a constant refractive index is formed on a plastic base material.
- Patent Document 2 proposes to suppress the occurrence of interference fringes by setting the thickness T of the functional layer in the range of 9.1 to 100 ⁇ m.
- the occurrence of interference fringes can be further suppressed by increasing, equating, decreasing or making the refractive index of the lens substrate, the refractive index of the primer layer, and the refractive index of the hard coat layer in this order. ..
- the hard coat layer becomes thick, there is a problem that the hard coat layer is cracked at the time of manufacturing.
- Patent Document 3 has a lens base material and a hard coat layer, and the hard coat layer is polyfunctional in an amount of more than 40% by mass and 60% by mass or less in the inorganic oxide particles, the silane coupling agent, and the matrix component.
- an spectacle lens obtained by curing a curable composition containing a sex epoxy compound.
- the film thickness of the hard coat layer is set to 10 ⁇ m or more and 50 ⁇ m or less to suppress cracks during manufacturing.
- the content of the polyfunctional epoxy compound exceeds 40%, there is a problem that sufficient hardness cannot be obtained.
- an object of the present invention is that in an optical article in which a functional layer of a hard coat layer including a hard coat layer or a primer layer is formed on a plastic layer having a high refractive index, fine particles of metal oxides such as zirconia and titanium oxide are formed.
- the purpose is to make the interference fringes inconspicuous and to suppress the generation of cracks during the production of the hard coat layer without adding a high-refractive agent.
- the present invention at least suppresses the total thickness of the hardcoat layer and the primer layer to reduce the occurrence of interference fringes, and the hardcoat layer contains a mixture of a trifunctional silane coupling agent and a bifunctional silane coupling agent. By doing so, the generation of cracks during manufacturing is suppressed.
- Examples of the material of the plastic base material that can be used in the present invention include diallyl carbonate, polycarbonate, polyurethane, polythiourethane, and episulfide (refractive index 1.40 to 1.84).
- Examples of the material of the primer layer that can be used in the present invention include polyurethane resin, polyester resin, acrylic resin, and epoxy resin.
- the primer layer can be formed on the plastic substrate by a known method such as dip coating, die coating, flow coating, and gravure coating.
- the hard coat layer that can be used in the present invention is formed by using a coating agent composition prepared by adding an epoxy group-containing silane coupling agent, an inorganic oxide such as silica particles, a polyfunctional epoxy, or the like. ..
- the hard coat layer can be formed on the plastic substrate by a known method such as dip coating, die coating, flow coating, and gravure coating.
- the epoxy resin used for the hard coat layer of the present invention is preferably a compound having two or more epoxy groups from the viewpoint of maintaining hardness, and examples thereof include an aliphatic epoxy compound, an alicyclic epoxy compound, and an aromatic epoxy compound.
- aliphatic epoxy compounds are 1,6-hexanediol diglycidyl ether, ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, triethylene glycol diglycidyl ether, tetraethylene glycol diglycidyl ether, nonaethylene glycol diglycidyl ether, Propropylene Glycol Diglycidyl Ether, Dipropylene Glycol Diglycidyl Ether, Tripropylene Glycol Diglycidyl Ether, Tetrapropylene Glycol Diglycidyl Ether, Nonapropylene Glycol Diglycidyl Ether, Neopentyl Glycol Diglycidyl Ether, Trimethylol Propane Diglycid
- Examples of alicyclic epoxy compounds include 3,4-epoxycyclohexylmethyl-3', 4'-epoxycyclohexanecarboxylate, isophoronediol diglycidyl ether, bis-2,2-hydroxycyclohexylpropanediglycidyl ether and the like.
- Examples of aromatic epoxy compounds include resorcin diglycidyl ether, bisphenol A diglycidyl ether, bisphenol F diglycidyl ether, bisphenol S diglycidyl ether, orthophthalic acid diglycidyl ester, phenol novolac polyglycidyl ether, cresol novolac polyglycidyl ether and the like. include.
- the epoxy group-containing silane coupling agent used in the hard coat layer of the present invention is (A) glycidoxymethyltrimethoxysilane, glycidoxymethyltriethoxysilane, ⁇ -glycidoxyethyltriethoxysilane, ⁇ -glycid.
- ⁇ -glycidoxyethyl methyldiethoxysilane ⁇ -glycidoxyethylmethyldimethoxysilane, ⁇ -glycidoxyethylmethyldiethoxysilane, ⁇ -glycidoxypropylmethyldimethoxysilane, ⁇ -glycidoxypropylmethyldiethoxysilane, ⁇ -glycidoxypropylmethyl Dimethoxysilane, ⁇ -glycidoxypropylmethyldiethoxysilane, ⁇ -glycidoxypropylmethyldimethoxysilane, ⁇ -glycidoxypropylmethyldiethoxysilane, ⁇ -glycidoxypropylmethyldipropoxysilane, ⁇ -glycid Xipropylmethyldibutoxysilane, ⁇ -glycidoxypropylmethyldiphenoxysilane, ⁇ -glycidoxypropylethyldimethoxysilane, ⁇ -
- the trifunctional silane cup when a mixture of a seed selected from the trifunctional silane coupling agent and a seed selected from the bifunctional silane coupling agent is used as the epoxy group-containing silane coupling agent, the trifunctional silane cup is used.
- the solid content ratio (trifunctional silane coupling agent: bifunctional silane coupling agent) between the ring agent and the bifunctional silane coupling agent is preferably 95: 5 to 10:90, more preferably 90:10. ⁇ 10: 90.
- a curing catalyst for the coating composition of the present invention aluminum (III) acetylacetonate [or aluminumtris (acetylacetonate)], titanium (IV) acetylacetonate [or titanium tetra (acetylacetonate)], zirconium IV )
- a cationic curing catalyst such as acetylacetonate [or zirconium tetra (acetylacetonate)] is preferable.
- the amount of the curing catalyst added is preferably 0.5 to 5 parts by mass, more preferably 1 to 3 parts by mass with respect to 100 parts by mass.
- the inorganic oxide used for the hard coat layer of the present invention includes particles such as zinc oxide (ZnO), silicon dioxide (SiO 2 ), titanium oxide (TiO 2 ), zirconium oxide (ZrO 2 ), and tin oxide (SnO 2 ). Can be mentioned. Although silicon dioxide is preferable, they can be used alone or in combination with two or more kinds of inorganic oxides.
- an inorganic or organic antireflection layer can be further formed on the hard coat layer, if necessary.
- an antifouling layer can be further formed on the antireflection layer, if necessary.
- the antifouling layer has a function of imparting water repellency and oil repellency to the surface of the optical article, and is, for example, a layer made of an organosilicon compound containing fluorine.
- the mixture of the trifunctional silane coupling agent and the bifunctional silane coupling agent is blended in the hard coat layer, even if the film thickness of the hard coat layer is increased to reduce interference fringes, It is possible to suppress the occurrence of cracks during manufacturing.
- the optical article of the present invention has at least a plastic base material and a hard coat layer formed on the plastic base material.
- the refractive index of the plastic substrate is 1.40 to 1.84
- the film thickness of the hard coat layer is 23 ⁇ m or less, for example, 10 to 23 ⁇ m, preferably 15 to 20 ⁇ m. It contains a mixture of a trifunctional silane coupling agent and a bifunctional silane coupling agent.
- the optical article of the present invention may be provided with a primer layer on a plastic base material.
- the refractive index of the primer layer at that time is preferably in the range of 1.45 to 1.67.
- Component A Metal oxide
- A-1 Water-dispersed silica sol (Snowtex O: manufactured by Nissan Chemical Industries, Ltd., etc.)
- A-2 Organic solvent-dispersed silica sol (methanol silica sol: manufactured by Nissan Chemical Industries, Ltd., etc.)
- B-1 ⁇ -glycidoxypropyltrimethoxysilane (GPTMS)
- B-2 ⁇ -glycidoxypropyltriethoxysilane
- B-3 ⁇ -glycidoxypropyl (methyl) dimethoxysilane (GPDMS)
- B-4 ⁇ -glycidoxypropyl (methyl) diethoxysilane (GPDES)
- Ingredient D Leveling agent SH28PA (manufactured by Toray Dow Corning Co., Ltd.)
- E-1 Aluminum tris (
- Example 1 Add 16.2 parts by mass of A-1 and 21.6 parts by mass of A-2 as component A, and add 49.2 parts by mass of B-1 and 2.3 parts by mass of B-3 as component B for 2 hours at 40 ° C. Stirred. Add 15.0 parts by mass of F-1 and 1.8 parts by mass of F-2 as F component, and add 2.5 parts by mass of C component, 1.0 part by mass of D component, and 2.1 parts by mass of E-1 component. rice field. Then, the solvent was recovered to obtain a coating liquid having a solid content concentration of 60%. Using the coating liquid, dip coat lenses with different refractive indexes, pre-dry them at 80 ° C for 10 minutes, and then heat-cure them at 120 ° C for 1 hour to form a hard coat layer. The appearance (presence or absence of cracks) and scratch resistance were evaluated.
- the plastic base material and the optical article in which the hard coat layer is formed on the plastic base material have a refractive index of 1.40 to 1.84.
- the thickness of the hard coat layer is 23 ⁇ m or less, preferably 15 to 20 ⁇ m, and the hard coat layer contains a trifunctional silane coupling agent and a bifunctional silane coupling agent at 95: 5 to 10.
- Optical articles can be provided that include a mixture containing: 90, preferably in a solids ratio of 90:10 to 10:90. In such an optical article, interference fringes are suppressed, and even if the film thickness of the hard coat layer is increased, cracks do not occur during manufacturing.
- ⁇ Evaluation method> Measurement of film thickness A reflection spectroscopic film thickness meter FE-3000 manufactured by Otsuka Electronics Co., Ltd. was used to measure the film thickness of each layer after curing. (2) Confirmation of interference fringes Interference fringes were visually confirmed under a fluorescent lamp having three wavelengths. The evaluation criteria were ⁇ for those who passed and ⁇ for those who failed. (3) Initial appearance The coating film formed up to the hard coat layer was visually confirmed and the occurrence of cracks was evaluated. Those without cracks were marked with ⁇ , and those with cracks were marked with x.
- an optical article such as a spectacle lens
- interference fringes are not conspicuous and crack generation during manufacturing can be suppressed.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
しかしながら、酸化ジルコニウム、酸化チタン等の金属酸化物の微粒子は高価である為、製造コストが高くなる問題があった。
しかしながら、ハードコート層が厚くなると、製造時にハードコート層にクラックが入る問題があった。
しかしながら、多官能エポキシ化合物の含有量が40%を超えると、十分な硬度が得られない問題があった。
ハードコート層は、前記プラスチック基材の上に、例えば、ディップコーティング、ダイコーティング、フローコーティング、グラビアコーティング等の公知の方法を用いて形成することができる。
本発明のコーティング剤組成物中、100質量部に対して、硬化触媒の添加量は0.5~5質量部が好ましく、より好ましくは1~3質量部である。
A成分:金属酸化物
A-1:水分散シリカゾル(スノーテックスO:日産化学株式会社製など)
A-2:有機溶剤分散シリカゾル(メタノールシリカゾル:日産化学社製など)
B成分:エポキシ基含有シランカップリング剤
B-1:γ-グリシドキシプロピルトリメトキシシラン(GPTMS)
B-2:γ-グリシドキシプロピルトリエトキシシラン(GPTES)
B-3:γ-グリシドキシプロピル(メチル)ジメトキシシラン(GPDMS)
B-4:γ-グリシドキシプロピル(メチル)ジエトキシシラン(GPDES)
C成分:多官能エポキシ化合物
JER827(三菱ケミカル株式会社製)
D成分:レベリング剤
SH28PA(東レ・ダウコーニング株式会社製)
E成分:硬化触媒
E-1:アルミニウムトリス(アセチルアセトナート)
E-2:イタコン酸
F成分:溶媒
F-1:メタノール
F-2:アセチルアセトン
F-3:プロピレングリコールモノメチルエーテル
A成分としてA-1 16.2質量部、A-2 21.6質量部を入れ、B成分としてB-1 49.2質量部、B-3 2.3質量部を加えて40℃2時間撹拌した。F成分としてF-1 15.0質量部、F-2 1.8質量部を加え、C成分 2.5質量部、D成分 1.0質量部、E-1成分 2.1質量部を加えた。その後、溶媒を回収して固形分濃度60%のコーティング液を得た。
そのコーティング液を用いて、異なる屈折率のレンズにディップコートして80℃で10分間の予備乾燥後120℃で1時間熱硬化させ、ハードコート層を形成し、膜厚、干渉縞の状態、外観(クラック発生の有無)及び耐擦傷性を評価した。
表1に示す配合組成を用いて実施例1と同様の方法で製造し、評価を行なった。
プラスチック基材(レンズ)とハードコート層の屈折率が離れると干渉縞は強く目立つようになるが、プラスチック基材の材質やプライマー層形成の有無によらず、屈折率の異なる種々レンズを使用しても膜厚を制御することによって干渉縞を低減することができた。本発明によれば2官能性および3官能性シランカップリング剤を併用するので、ハードコート層の膜厚が厚くなっても、製造時のクラック発生が抑制できた。
また、コーティング液の固形分濃度が35%(比較例3)では膜厚を適正範囲 (15μm~30μm)内にすることが難しく、無理に膜厚をつけようとすると外観が悪くなった。したがって、前記コーティング液の固形分濃度は膜厚を上げるために40~70%、好ましくは55~70%の範囲で行なうことで干渉縞が抑制された光学物品を提供することができる。
さらに、硬化触媒としてカチオン性のアルミニウムトリス(アセチルアセトナート)を用いた実施例1と比較して、イタコン酸を用いた比較例4のハードコート層の耐擦傷性が悪かった。このことから、カチオン性硬化触媒がハードコート層の硬化に有用であることが分かった。
(1)膜厚の測定
大塚電子株式会社製の反射分光膜厚計FE-3000を用いて、硬化後の各層の膜厚測定を行なった。
(2)干渉縞の確認
三波長の蛍光灯の下で目視にて干渉縞を確認した。
評価基準は、合格のものを○、不合格のものを×とした。
(3)初期外観
ハードコート層まで形成した塗膜を目視で確認し、クラックの発生を評価した。
クラックがないものを○、クラックがあるものを×とした。
(4)塗膜の耐擦傷性試験
表面性測定機(型番:TYPE14DR、新東科学(株)製)のスチールウールホルダーに#0000のスチールウールを固定し、1kgの荷重をかけて、塗膜表面上を10回往復摩擦した(以下、スチールウール擦傷試験という)。
傷が入らなかったものを○、明確に傷があるものを×とした。
Claims (5)
- 少なくとも、エポキシ樹脂、シランカップリング剤、シリカ粒子を含み、前記シランカップリング剤は、3官能性シランカップリング剤および2官能性シランカップリング剤を、95:5~10:90の固形分比で含む、コーティング剤組成物。
- 固形分濃度が40%~70%の範囲である請求項1に記載のコーティング剤組成物。
- さらに、カチオン性硬化触媒を含む、請求項1または2に記載のコーティング剤組成物。
- 少なくとも、プラスチック基材上にハードコート層が形成された光学物品であって、前記プラスチック基材の屈折率が1.40~1.84であって、請求項1~3いずれかに記載のコーティング組成物の硬化物であるハードコート層の膜厚が10μm~23μmの範囲を有する物品。
- 少なくとも、プラスチック基材上に形成されたプライマー層の上にハードコート層が形成された光学物品であって、前記プライマー層の材質が、ポリウレタン系樹脂、ポリエステル系樹脂、アクリル樹脂およびエポキシ樹脂よりなる群から選択され、屈折率が1.45~1.67の範囲である請求項4に記載の物品。
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PCT/JP2020/039106 WO2022079899A1 (ja) | 2020-10-16 | 2020-10-16 | 低干渉縞光学物品およびそのコーティング剤組成物 |
CN202080105151.7A CN116075559B (zh) | 2020-10-16 | 2020-10-16 | 低干涉条纹光学物品及其涂布剂组合物 |
EP20957728.7A EP4186949A4 (en) | 2020-10-16 | 2020-10-16 | OPTICAL PRODUCT WITH REDUCED INTERFERENCE FRINGES AND RELATED COATING AGENT COMPOSITION |
JP2022510987A JP7072742B1 (ja) | 2020-10-16 | 2020-10-16 | 低干渉縞光学物品およびそのコーティング剤組成物 |
US18/026,466 US20230348750A1 (en) | 2020-10-16 | 2020-10-16 | Low interference fringe optical article and coating agent composition thereof |
TW110138015A TW202223009A (zh) | 2020-10-16 | 2021-10-13 | 低干涉條紋光學物品及其塗佈劑組成物 |
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US20230348750A1 (en) | 2023-11-02 |
CN116075559A (zh) | 2023-05-05 |
TW202223009A (zh) | 2022-06-16 |
EP4186949A1 (en) | 2023-05-31 |
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