WO2022085330A1 - 組成物並びにこれを用いた光学材料およびレンズ - Google Patents
組成物並びにこれを用いた光学材料およびレンズ Download PDFInfo
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- WO2022085330A1 WO2022085330A1 PCT/JP2021/033315 JP2021033315W WO2022085330A1 WO 2022085330 A1 WO2022085330 A1 WO 2022085330A1 JP 2021033315 W JP2021033315 W JP 2021033315W WO 2022085330 A1 WO2022085330 A1 WO 2022085330A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3855—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/06—Polythioethers from cyclic thioethers
- C08G75/08—Polythioethers from cyclic thioethers from thiiranes
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C321/00—Thiols, sulfides, hydropolysulfides or polysulfides
- C07C321/12—Sulfides, hydropolysulfides, or polysulfides having thio groups bound to acyclic carbon atoms
- C07C321/14—Sulfides, hydropolysulfides, or polysulfides having thio groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
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- 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
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- 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
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D331/00—Heterocyclic compounds containing rings of less than five members, having one sulfur atom as the only ring hetero atom
- C07D331/02—Three-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D341/00—Heterocyclic compounds containing rings having three or more sulfur atoms as the only ring hetero atoms
Definitions
- the present invention relates to a composition and an optical material and a lens using the composition.
- Optical materials are required to have optical performance such as heat resistance, low specific gravity, high transparency, low yellowness, high refractive index, and high Abbe number.
- optical performance such as heat resistance, low specific gravity, high transparency, low yellowness, high refractive index, and high Abbe number.
- further improvement in performance has been required, and in particular, an optical material having a high refractive index and a high Abbe number is required.
- Patent Document 1 describes a polymerizable composition containing a thioepoxy compound having a refractive index (nd) of 1.71 or more and having one or more disulfide bonds in the molecule.
- nd refractive index
- the invention according to is described. At this time, it is described that bis (2,3-epithiopropyl) disulfide is the most preferable as the thioepoxy compound having one or more disulfide bonds in the molecule.
- an optical material having a high refractive index can be obtained.
- an optical material having a higher refractive index It has been found that the heat resistance may decrease when sulfur or the like is added to increase the refractive index of the optical material. Therefore, the present invention provides a composition capable of obtaining an optical material having a high refractive index and excellent heat resistance.
- the present inventors have conducted diligent research to solve the above problems. As a result, they have found that the above-mentioned problems can be solved by combining an episulfide compound having an aromatic skeleton and 1,2,3,5,6-pentathiepan, and have completed the present invention. That is, the present invention is, for example, as follows.
- the polythiol (d) is 1,2,6,7-tetramercapto-4-thiaheptane, methanedithiol, (sulfanylmethyldisulfanyl) methanethiol, bis (2-mercaptoethyl) sulfide, 2, 5-bis (mercaptomethyl) -1,4-dithian, 1,2-bis (2-mercaptoethylthio) -3-mercaptopropane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6, 9-Trithiaundecane, 4,7-Dimercaptomethyl-1,11-Dimercapto-3,6,9-Trithiaundecane, 5,7-Dimercaptomethyl-1,11-Dimercapto-3,6,9- Trithiaundecane, 1,1,3,3-tetrakis (mercaptomethylthio) propane, tetramercaptopentaerythritol, 1,3-bis (mercap
- the prepolymerization catalyst is selected from the group consisting of 2-mercapto-1-methylimidazole, 2-methyl-N-imidazole, and 1,2,2,6,6-pentamethylpiperidylmethacrylate.
- the composition according to the above [11] which comprises at least one of the above.
- An optical lens comprising the optical material according to the above [14].
- composition capable of obtaining an optical material having a high refractive index and excellent heat resistance.
- composition contains the compound (a) represented by the formula (1) and 1,2,3,5,6-pentathiepan (b).
- the compound (c) represented by the formula (2), polythiol (d), sulfur, a polymerizable compound, a prepolymerization catalyst, a polymerization catalyst, a polymerization modifier, an additive and the like may be further contained.
- the composition contains the compound (a) represented by the formula (1), that is, the episulfide compound having an aromatic skeleton, high refractive index and high heat resistance can be achieved. Further, when the composition contains 1,2,3,5,6-pentathiepan (b), the refractive index can be further increased, and the refractive index of the cured product (optical material) obtained by combining these can be obtained. Heat resistance can be increased. Therefore, the composition is preferably a composition for an optical material.
- Ar indicates an aromatic ring.
- the aromatic ring include an aromatic ring composed of carbon and hydrogen, and a complex aromatic ring (aromatic ring containing a hetero atom).
- Ar has 2 or more carbon atoms, preferably 2 to 18, more preferably 2 to 12, and even more preferably 3 to 6. Further, Ar is preferably a 5-membered ring or a 6-membered ring, and more preferably a 6-membered ring.
- the aromatic ring composed of carbon and hydrogen is not particularly limited, and examples thereof include a benzene ring, a naphthalene ring, a fluorene ring, an anthracene ring, and a phenanthrene ring. Of these, the aromatic ring composed of carbon and hydrogen is preferably a benzene ring.
- the heteroaromatic ring is not particularly limited, but is limited to a furan ring, a pyran ring, a pyrrole ring, an imidazole ring, a pyrazole ring, an oxazole ring, an isoxazole ring, a thiazole ring, an isothiazole ring, a triazole ring, a thiaziazole ring, a pyridine ring, and the like.
- Examples thereof include a pyrazine ring, a pyrimidine ring, a pyridazine ring, a triazine ring, an indole ring, an isoindole ring, an indazole ring, a quinoline ring, an isoquinoline ring, a phthalazine ring, a phenanthridine ring, and an acridin ring.
- the heteroaromatic ring includes a furan ring, a pyran ring, a pyrrole ring, an imidazole ring, a pyrazole ring, an oxazole ring, an isooxazole ring, a thiazole ring, an isothiazole ring, a triazole ring, a thiadiazole ring, a pyridine ring, and a pyrazine ring.
- Ar is preferably an aromatic ring composed of carbon and hydrogen, and more preferably a benzene ring.
- M represents an integer of 2 to 8, and is preferably 2, 3, or 6, more preferably 2 or 3, and even more preferably 3 from the viewpoint of heat resistance and ease of synthesis.
- N represents an integer of 0 to 6, preferably 0 to 2, more preferably 0 or 1, and even more preferably 0.
- M + n is not more than the number of carbon atoms constituting the aromatic ring, preferably 2 to 6, more preferably 3 to 6, still more preferably 2 to 3, and particularly preferably 3. It should be noted that when m + n is 3, the heat resistance is higher, which is preferable. Further, "less than or equal to the number of carbon atoms constituting the aromatic ring” means that the number of carbon atoms possessed as the aromatic ring is not exceeded. For example, in the case of a benzene ring, which is an aromatic ring composed of carbon and hydrogen, the number of carbon atoms constituting the ring is 6, so m + n is 6 or less. Further, in the case of the thiadiazole ring which is a complex aromatic ring, since the number of carbon atoms constituting the ring is 2, m + n is 2 or less.
- R 1 independently represents an alkylthio group, an epoxyalkylthio group, a thiol group, a halogen group, a hydroxy group, a dialkylthiocarbamoyl group, or a dialkylcarbamoylthio group.
- the alkylthio group is not particularly limited, and examples thereof include a methylthio group, an ethylthio group, a propylthio group, a butylthio group, an isobutylthio group, a sec-butylthio group, a tert-butylthio group, a pentylthio group, and a hexylthio group.
- the epoxyalkylthio group is not particularly limited, and examples thereof include ⁇ -epoxypropylthio group.
- the halogen group is not particularly limited, and examples thereof include a fluorine group (-F), a chlorine group (-Cl), a bromine group (-Br), and an iodine group (-I).
- the dialkylthiocarbamoyl group is not particularly limited, and examples thereof include a dimethylthiocarbamoyl group, a diethylthiocarbamoyl group, and an ethylmethylthiocarbamoyl group.
- the compound (a) is represented by the following formula (1').
- m represents an integer of 2 to 6, and is preferably 2, 3, or 6, more preferably 2 or 3, and even more preferably 3 from the viewpoint of color tone and ease of composition. Is.
- n represents an integer of 0 to 4, preferably 0 to 2, more preferably 0 or 1, and even more preferably 0.
- m + n is 6 or less (m + n ⁇ 6), preferably 2 to 6, more preferably 3 to 6, and even more preferably 3. It should be noted that when m + n is 3, the heat resistance is higher, which is preferable.
- R 1 is the same as the above formula (1).
- the compound (a) are not particularly limited, but bis (episulfide) such as 1,3-bis ( ⁇ -epithiopropylthio) benzene and 1,4-bis ( ⁇ -epithiopropylthio) benzene.
- Tris (episulfide) compounds such as benzene; 1-methyl-3,5-bis ( ⁇ -epothiopropylthio) benzene, 1-methyl-2,4-bis ( ⁇ -epothiopropylthio) benzene, 1- Methyl-2,5-bis ( ⁇ -epothiopropylthio) benzene, 1-ethyl-3,5-bis ( ⁇ -epotipropylthio) benzene, 1-t-butylthio-3,5-bis ( ⁇ -) Alkylthio group-substituted bis (episulfide) compounds such as epothiopropylthio)
- ⁇ -Epithiopropylthio Benzene, 2,5-bis ( ⁇ -Epithiopropylthio) -1,3,4-thia Asiazole, 2,4,6-Tris ( ⁇ -Epithiopropylthio) -1,3 , 5-Triazine is more preferred, and 1,3,5-Tris ( ⁇ -epithiopropylthio) benzene is even more preferred.
- the above-mentioned compound (a) may be used alone or in combination of two or more.
- the content of the compound (a) is preferably 0.1 to 99.5% by mass, more preferably 3 to 90% by mass, and 5 to 90% by mass with respect to the total mass of the composition. It is more preferably 20 to 80% by mass, particularly preferably 30 to 60% by mass, and most preferably 35 to 60% by mass. When the content of the compound (a) is in the above range, sufficient heat resistance can be obtained.
- 1,2,3,5,6-pentathiepan (b) is a compound represented by the following formula, and has an effect of improving the refractive index of the obtained optical material.
- the method for obtaining 1,2,3,5,6-pentathiepan (b) is not particularly limited, and a commercially available product may be used, or it may be collected and extracted from natural products such as crude oil and animals and plants, and is known. It may be synthesized by a method.
- a commercially available product may be used, or it may be collected and extracted from natural products such as crude oil and animals and plants, and is known. It may be synthesized by a method.
- N Takeda et al., Bull. Chem. Soc. Jpn., 68, 2757 (1995), F. Feher Et al., Angew. Chem. Int. Ed., 7, 301 (1968), G. W. Kutney et al., Can. J. Chem, 58, 1233 (1980) and the like.
- the content of 1,2,3,5,6-pentathiepan (b) is preferably 5 to 70% by mass, more preferably 5 to 40% by mass, based on the total mass of the composition. It is more preferably 5 to 25% by weight.
- the obtained optical material can achieve both high refractive index and high transparency, which is preferable.
- the mass ratio of compound (a) to 1,2,3,5,6-pentathiepan (b) is from 25:75 to It is preferably 95: 5.
- the mass ratio is in the above range, the obtained optical material is preferable because it can achieve both a high refractive index and an excellent color tone.
- the composition may further comprise compound (c).
- the compound (c) is represented by the following formula (2).
- the compound (c) can be copolymerized with the compound (a), and when used together with the compound (a), it has an effect of enhancing the curing reactivity.
- P indicates an integer of 0 to 4, preferably 0 to 2, and more preferably 0 or 1.
- Q indicates an integer of 0 to 2, preferably 0 to 2, and more preferably 0 or 1.
- the compound (c) include, but are not limited to, bis ( ⁇ -epithiopropyl) sulfide and bis ( ⁇ -epithiopropyl) disulfide. Of these, bis ( ⁇ -epithiopropyl) sulfide is preferable.
- the above-mentioned compound (c) may be used alone or in combination of two or more.
- the content of the compound (c) is 0 to 50% by mass, preferably 1 to 40% by mass, and more preferably 5 to 40% by mass with respect to the total mass of the composition.
- the content of the compound (c) is in the above range, it is preferable because the curing reactivity can be improved while ensuring an excellent color tone.
- the mass ratio of compound (a) to compound (c) is preferably 40:60 to 100: 0, and preferably 50:50 to 100: 0. More preferred.
- the mass ratio is in the above range, a high refractive index and an excellent color tone can be achieved at the same time, which is preferable.
- the composition may further comprise polythiol (d).
- polythiol (d) means a compound having two or more thiol groups (-SH) per molecule. At this time, the compound (a) (episulfide compound having an aromatic skeleton) is not included in the polythiol (d).
- the polythiol (d) is not particularly limited, but from the viewpoint of high color tone improving effect, 1,2,6,7-tetramercapto-4-thiaheptane, methanedithiol, (sulfanylmethyldisulfanyl) methanethiol.
- Dissulfanyl) Methanethiol, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane is more preferred, bis (2-mercaptoethyl) sulfide, 1,2,6 , 7-Tetramercapto-4-thiaheptane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane are more preferred.
- the above-mentioned polythiol (d) may be used alone or in combination of two or more.
- the content of the polythiol (d) is preferably 0 to 25% by mass, more preferably 0.1 to 20% by mass, and 0.5 to 20% by mass with respect to the total mass of the composition. It is more preferably 1 to 15% by mass, and most preferably 1 to 10% by mass.
- the content of the polythiol (d) is in the above range, the balance between the color tone stabilizing effect and the heat resistance is improved, which is preferable.
- the total content of 1,2,3,5,6-pentathiepan (b) and polythiol (d) is preferably 5 to 50% by mass with respect to the total mass of the composition. It is more preferably 5 to 30% by mass, further preferably 5 to 25% by mass. When the total content is in the above range, the heat resistance of the obtained optical material is high, which is preferable.
- the composition may further contain sulfur.
- sulfur By containing sulfur, the refractive index of the obtained optical material can be improved.
- the shape of sulfur is not particularly limited and may be any shape. Specific shapes include fine powder sulfur, colloidal sulfur, precipitated sulfur, crystalline sulfur, sublimated sulfur and the like. Of these, fine sulfur is preferable from the viewpoint of dissolution rate.
- the particle size (diameter) of sulfur is preferably smaller than 10 mesh (opening 1.70 mm), more preferably smaller than 30 mesh (opening 500 ⁇ m), and even smaller than 60 mesh (opening 250 ⁇ m). preferable.
- the particle size of sulfur is smaller than 10 mesh, sulfur is easily dissolved, which is preferable.
- the purity of sulfur is not particularly limited, but is preferably 98% or more, more preferably 99.0% or more, further preferably 99.5% or more, and 99.9% or more. Is particularly preferred. When the purity of sulfur is 98% or more, the color tone of the obtained optical material is further improved, which is preferable.
- the sulfur content is preferably 0 to 30% by mass, more preferably 0 to 25% by mass, and even more preferably 0.1 to 20% by mass with respect to the total mass of the composition. It is particularly preferably 1 to 15% by mass. When the sulfur content is in the above range, it is preferable because the effect of improving the refractive index and the solubility are excellent.
- the composition may further comprise a polymerizable compound.
- the physical characteristics of the optical material can be adjusted by containing the polymerizable compound.
- the "polymerizable compound” means a compound that can be copolymerized with the compound (a).
- the polymerizable compound is not particularly limited as long as it is a compound that can be copolymerized with the compound (a), but is an episulfide compound other than the compound (a) and the compound (c), a vinyl compound, a methacrylic compound, an acrylic compound, an allyl compound and the like. Can be mentioned. These compounds may be used alone or in combination of two or more.
- the amount of the polymerizable compound added is not particularly limited as long as it does not impair the effects of the present invention, and is preferably 0 to 30% by mass, preferably 1 to 30% by mass, based on the total mass of the composition. Is more preferable, and 1 to 20% by mass is further preferable.
- the composition may further comprise a prepolymerization catalyst.
- the prepolymerization catalyst By including the prepolymerization catalyst, the pre-cured product described later can be suitably produced.
- the prepolymerization catalyst is not particularly limited, and examples thereof include imidazoles, phosphines, thioureas, quaternary ammonium salts, quaternary phosphonium salts, tertiary sulfonium salts, secondary iodonium salts, and hindered amines. .. Of these, imidazoles and hindered amines are preferable from the viewpoint of good compatibility with the composition.
- the imidazoles are not particularly limited, and examples thereof include N-benzylimidazole, 4-methylimidazole, 4-ethylimidazole, 1-phenylimidazole, 2-methyl-N-methylimidazole and the like.
- the hindered amine is not particularly limited, but is 1,2,2,6,6-pentamethylpiperidylmethacrylate, 1,2,2,6,6-pentamethylpiperidylacryllate, 1,2, Examples include hindered amines such as 2,6,6-pentamethylpiperidyl-4-vinylbenzoate.
- the prepolymerization catalyst is selected from the group consisting of 2-mercapto-1-methylimidazole, 2-methyl-N-imidazole, 1,2,2,6,6-pentamethylpiperidylmethacrylate. It is preferable to include at least one.
- the above-mentioned prepolymerization catalyst may be used alone or in combination of two or more.
- the amount of the prepolymerization catalyst added varies depending on the composition, the mixing ratio, and the polymerization curing method, and therefore cannot be unconditionally determined.
- Compound (c), polythiol (d), and sulfur are preferably 0.0001% by mass to 10% by mass, preferably 0.003% by mass to 3.0% by mass, based on 100% by mass of the total. Is more preferable.
- the amount of the prepolymerization catalyst added is 0.0001% by mass or more, the prepolymerization reaction proceeds favorably, which is preferable.
- the addition amount of the prepolymerization catalyst is 10% by mass or less, the oxidation resistance is high, which is preferable.
- the composition may further comprise a polymerization catalyst.
- the composition can be suitably polymerized to produce an optical material.
- the polymerization catalyst is not particularly limited, but is not particularly limited, but amines, phosphins, quaternary ammonium salts, quaternary phosphonium salts, tertiary sulfonium salts, secondary iodonium salts, mineral acids, Lewis acids, organic acids, and silica. Acids, boric acid tetrafluoroacids, peroxides, azized compounds, condensates of aldehydes and ammonia compounds, guanidines, thioureas, thiazoles, sulfenamides, thiurams, dithiocarbamates, xanthogens. Examples thereof include acid salts and acidic phosphate esters. Of these, amines, phosphines, quaternary ammonium salts, and quaternary phosphonium salts are preferable. These polymerization catalysts may be used alone or in combination of two or more.
- the amount of the polymerization catalyst added is preferably 0.0001 to 10% by mass, more preferably 0.01 to 3% by mass, based on the total mass of the composition.
- the composition may further comprise a polymerization modifier.
- the polymerization modifier is not particularly limited, and examples thereof include halides of Groups 13 to 16 in the long-term periodic table. Of these, halides of silicon, germanium, tin and antimony are preferable, and chlorides of germanium, tin and antimony having an alkyl group are more preferable. These polymerization modifiers may be used alone or in combination of two or more.
- the amount of the polymerization modifier added is preferably 0.0001 to 5.0% by mass, more preferably 0.01 to 2% by mass, based on the total mass of the composition.
- the composition may further comprise an additive.
- the additive include, but are not limited to, an antioxidant, a brewing agent, an ultraviolet absorber, a deodorant, an adhesion improving agent, a mold release improving agent, a radical polymerization initiator and the like. These additives may be used alone or in combination of two or more.
- the content of the additive is preferably 0 to 10% by mass, more preferably 0.5 to 10% by mass, based on the total mass of the composition.
- composition of composition has the following composition: That is, the composition is based on the total amount of the composition.
- Compound (a) 20 to 90% by mass, preferably 20 to 80% by mass; 1,2,3,5,6-pentathiepan (b): 5 to 70% by mass, preferably 5 to 40% by mass;
- Compound (c) 0 to 50% by mass, preferably 0 to 40% by mass;
- Polythiol (d) 0 to 10% by mass, preferably 0 to 5% by mass; Sulfur: 0-25% by weight, preferably 0-20% by weight;
- Prepolymerization catalyst 0 to 5% by mass, preferably 0 to 3% by mass
- Polymerization catalyst 0-5% by weight, preferably 0.0001-3% by weight; and polymerization modifier: 0-5% by weight, preferably 0.0001-3% by weight; including.
- composition is not particularly limited and can be produced by a known method. Specifically, it is produced by mixing compound (a) and 1,2,3,5,6-pentathiepan (b), and if necessary, compound (c), polythiol (d), sulfur and the like. be able to.
- a pre-cured product is provided.
- the pre-cured product is obtained by pre-polymerizing the above-mentioned composition.
- the pre-cured product is preferable from the viewpoints that the rate of increase in viscosity can be reduced, the transparency of the optical material is improved, and handling is facilitated.
- the “pre-cured product” means a liquid having a viscosity of 5,000 mps or less, and is compound (a), 1,2,3,5,6-pentathiepan (b), compound (c). , Polythiol (d), sulfur, and a polymer, a partial polymer, an oligomer, etc. formed by at least one of the polymerizable compounds by a polymerization reaction.
- the value measured by the following method shall be adopted as a "viscosity".
- Viscosity measurement method The viscosity of the pre-cured product at 30 ° C. was measured using a cone plate type viscometer DV2THA CP (manufactured by AMETEK, Inc.).
- a method for producing a pre-cured product includes a prepolymerization step of prepolymerizing the composition.
- the prepolymerization step is a step of prepolymerizing the composition.
- the composition described above is used.
- the composition preferably comprises a prepolymerization catalyst.
- the prepolymerization step is preferably carried out by casting into a mold such as a mold from the viewpoint of carrying out the polymerization step described later after the prepolymerization. At this time, it is preferable to filter and remove impurities with a filter having a pore size of about 0.1 to 5 ⁇ m before casting from the viewpoint of improving the quality of the optical material.
- the temperature of the prepolymerization is preferably ⁇ 10 to 160 ° C., more preferably 0 to 100 ° C., and even more preferably 20 to 80 ° C.
- the prepolymerization time is preferably 0.1 to 480 minutes, more preferably 0.1 to 420 minutes, and even more preferably 0.1 to 360 minutes.
- the prepolymerization is preferably at ⁇ 10 to 160 ° C. for 0.1 to 480 minutes, more preferably 0 to 100 ° C. for 0.1 to 420 minutes, still more preferably 20 to 80 ° C. for 0.1. It takes about 360 minutes.
- Prepolymerization may be carried out under normal pressure, under pressure, or under reduced pressure.
- the prepolymerization is carried out under reduced pressure, hydrogen sulfide which promotes the reaction is removed, so that the reaction usually proceeds mildly as compared with the case where the prepolymerization is carried out under normal pressure.
- the pressure is normal, the pressure may be increased in the atmosphere or in an inert gas.
- the detection method is not particularly limited, and examples thereof include liquid chromatography, viscosity measurement, specific gravity measurement, and refractive index measurement. Of these, it is preferable to measure the refractive index because it is simple. These detection methods may be used alone or in combination of two or more.
- the prepolymerization reaction it is preferable to detect the progress of the prepolymerization reaction in-line.
- it is more preferable to perform in-line detection because it is not necessary to release the pressure or reduced pressure in order to obtain a measurement sample.
- in-line detection for example, when measuring the refractive index, by immersing the detection unit of the refractive index meter in the composition before prepolymerization and the reaction solution of prepolymerization, the refractive index increases as the reaction progresses. Can be detected and the progress of the reaction can be controlled.
- the relationship between the temperature of the detection unit and the refractive index is determined. It is preferable to determine in advance. Specifically, it is preferable to use a refractive index meter provided with a temperature correction function that can automatically convert to the refractive index of the reference temperature.
- the in-line type refractive index meter include a method in which a light emitting diode is used as a light source and the angle of prism reflected light is identified by a CCD cell.
- an optical material is provided.
- the optical material is obtained by curing the above-mentioned composition or the above-mentioned pre-cured product. That is, the optical material is a cured product of the composition or the pre-cured product.
- the optical material according to this embodiment has a high refractive index and excellent heat resistance.
- the refractive index of the optical material is preferably 1.74 or more, more preferably 1.75 or more, and even more preferably 1.76 or more. That is, in the above-mentioned composition, the refractive index of the obtained optical material is preferably 1.74 or more, more preferably 1.75 or more, still more preferably 1.76 or more.
- the value of "refractive index" is measured by the method described in Examples.
- the optical material has no softening point or has a high softening point, so that it has excellent heat resistance.
- the optical material has no softening point when the temperature of the optical material is raised, or the softening point is preferably 50 ° C. or higher, more preferably 55 ° C. or higher, still more preferably 60 ° C. or higher, particularly preferably. Is 70 ° C. or higher, most preferably 75 ° C. or higher. That is, the above-mentioned composition has no softening point of the obtained optical material, or is preferably 55 ° C. or higher, more preferably 60 ° C. or higher, particularly preferably 70 ° C. or higher, and most preferably 75 ° C. or higher.
- the "softening point" is measured by the method described in Examples.
- the optical material has excellent heat resistance because it does not easily soften.
- the DTMA peak value (DTg) of the optical material is preferably 1.0 ⁇ m / ° C or lower, more preferably 0.5 ⁇ m / ° C or lower, and 0.3 ⁇ m / ° C or lower. Is even more preferable.
- DTMA peak value (DTg) means the peak value of DTMA which is the temperature derivative curve of the TMA curve obtained by TMA (thermomechanical analysis), and is measured by the method of Example.
- the optical material according to this embodiment has a high refractive index and excellent heat resistance, it is possible to blend various comonomer into the composition and increase the blending amount thereof, thereby having a wide range of physical properties. It is possible to design optical materials.
- a method for manufacturing an optical material comprises a polymerization step of polymerizing the composition described above or the pre-cured product described above.
- the polymerization step is a step of polymerizing the above-mentioned composition or the above-mentioned pre-cured product.
- the polymerization step is usually carried out by casting a composition or a pre-cured product into a mold such as a mold and polymerizing it.
- a mold such as a mold and polymerizing it.
- the composition it is preferable to filter and remove impurities with a filter having a pore size of about 0.1 to 5 ⁇ m before casting from the viewpoint of improving the quality of the optical material.
- the polymerization step includes a step of raising the temperature to the polymerization temperature, a step of maintaining the polymerization temperature, and a step of lowering the temperature.
- the polymerization may be carried out in multiple stages. That is, the steps for maintaining the polymerization temperature may have two or more steps.
- the polymerization step is a step of raising the temperature to the first polymerization temperature, a step of holding the temperature at the first polymerization temperature, a step of raising the temperature to the second polymerization temperature, and a step of holding the temperature at the second polymerization temperature. Including the process of polymerizing and the process of lowering the temperature. In this case, the first polymerization temperature is lower than the second polymerization temperature.
- the polymerization step includes a step of raising the temperature to the first polymerization temperature, a step of holding the temperature at the first polymerization temperature, a step of lowering the temperature to the second polymerization temperature, and a second polymerization. Includes a process of maintaining the temperature and a process of lowering the temperature. In this case, the first polymerization temperature is higher than the second polymerization temperature.
- the temperature rise rate in the step of raising the temperature is preferably 0.1 ° C to 100 ° C / h. Further, the temperature lowering rate in the step of lowering the temperature is preferably 0.1 ° C. to 100 ° C./h.
- the polymerization temperature is usually ⁇ 10 ° C. to 140 ° C., preferably 0 to 140 ° C.
- the polymerization time is usually 1 to 100 hours, preferably 1 to 72 hours.
- the "polymerization time” means a time including the time of the step of raising the temperature and the step of lowering the temperature.
- the temperature of the annealing treatment is preferably 50 to 150 ° C.
- the annealing treatment time is preferably 10 minutes to 5 hours.
- the obtained optical material may be subjected to surface treatment such as dyeing, hard coating, impact resistance coating, antireflection, and antifogging property, if necessary.
- optical materials are useful for various applications such as optical members, mechanical component materials, electrical / electronic component materials, automobile component materials, civil engineering and building materials, molding materials, as well as paint and adhesive materials.
- optical materials include eyeglass lenses, imaging lenses for (digital) cameras, light beam condensing lenses, lenses for light diffusion, encapsulants for LEDs, optical adhesives, bonding materials for optical transmission, and the like.
- Optical applications such as transparent glass such as optical fiber, prism, filter, diffraction grid, watch glass, cover glass for display device and cover glass; substrate for display elements such as LCD, organic EL and PDP, substrate for color filter, touch panel It is suitably used for display device applications such as substrates, information recording substrates, display backlights, light guide plates, display protective films, antireflection films, antifogging films and other coating agents (coating films).
- the optical material is particularly preferably used for applications such as optical lenses, prisms, optical fibers, information recording substrates, filters, etc., and more preferably used for optical lenses. That is, in one embodiment, an optical lens including the above-mentioned optical material is provided.
- the optical lens obtained from the composition according to the present invention is excellent in stability, hue, transparency, etc., it is used in fields such as telescopes, binoculars, television projectors, etc., in which expensive high-refractive index glass lenses have been conventionally used. It can be and is extremely useful. If necessary, it is preferably used in the form of an aspherical lens.
- the analysis and evaluation of the optical material was performed by the following method.
- the heat resistance evaluation was made as follows based on the following criteria (X) and (Y). -Reference (X): Tg ⁇ 55 ° C -Criteria (Y): DTg ⁇ 1.0
- reaction solution was cooled to 25 ° C., 400 g of toluene was added, and then the mixture was washed with 400 g of water three times, and the solvent was distilled off to obtain 45.3 g (132.3 mmol) of 1,3,5-tris (132.3 mmol).
- TTBB t-butylthio
- TMB1 TMB purity 100%
- TMB5 TMB5
- TMB6 TMB6
- c-1 Bis ( ⁇ -epithiopropyl) sulfide
- c-2 Bis ( ⁇ -epithiopropyl) disulfide
- c-3 Tetrakis ( ⁇ -epithiopropylthiomethyl) methane
- d-1 Bis (2-mercaptoethyl) sulfide
- d-2 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trichiaundecane
- d-3 1,2,6,7 -Tetra mercapto-4-chia heptane
- Example 1 Fraction a-1 65 parts by mass, 1,2,3,5,6-pentathiepan (b) (hereinafter, simply referred to as "pentathiepan (b)") 35 parts by mass, tetra-n-butylphosphonium bromide as a polymerization catalyst A composition was produced by vacuum degassing while mixing 0.02 parts by mass and 0.05 parts by mass of di-n-butyltin dichloride as a polymerization modifier at 60 ° C.
- Examples 2 to 22, Comparative Examples 1 to 4 The composition was produced in the same manner as in Example 1 except that the composition was changed to that shown in Table 3.
- Table 3 below shows the results of the refractive index and heat resistance evaluation of the manufactured optical material.
- the cured product (optical material) obtained by curing the compositions of Examples 1 to 22 has a high refractive index and excellent heat resistance.
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Abstract
Description
Arは、芳香環を示し、
mは2~8の整数を示し、
nは0~6の整数を示し、
ただし、m+nが芳香環を構成する炭素数以下であり、
R1は、それぞれ独立して、アルキルチオ基、エポキシアルキルチオ基、チオール基、ハロゲン基、ヒドロキシ基、ジアルキルチオカルバモイル基、またはジアルキルカルバモイルチオ基を示す。]
で表される化合物(a)および1,2,3,5,6-ペンタチエパン(b)を含む、組成物。
[2]mが、2または3である、上記[1]に記載の組成物。
[3]m+nが、2~6である、上記[1]または[2]に記載の組成物。
[4]前記化合物(a)の含有量が、組成物総質量に対して、20~80質量%である、上記[1]~[3]のいずれかに記載の組成物。
[5]前記1,2,3,5,6-ペンタチエパン(b)の含有量が、組成物総質量に対して、5~40質量%である、上記[1]~[4]のいずれかに記載の組成物。
[6]下記式(2):
pは0~4の整数を示し、
qは0~2の整数を示す]
で表される化合物(c)をさらに含む、上記[1]~[5]のいずれかに記載の組成物。
[7]前記化合物(c)の含有量が、組成物総質量に対して、5~40質量%である、上記[6]に記載の組成物。
[8]ポリチオ―ル(d)をさらに含む、上記[1]~[7]のいずれかに記載の組成物。
[9]前記ポリチオール(d)が、1,2,6,7-テトラメルカプト-4-チアへプタン、メタンジチオール、(スルファニルメチルジスルファニル)メタンチオール、ビス(2-メルカプトエチル)スルフィド、2,5-ビス(メルカプトメチル)-1,4-ジチアン、1,2-ビス(2-メルカプトエチルチオ)-3-メルカプトプロパン、4,8-ジメルカプトメチル-1,11-ジメルカプト-3,6,9-トリチアウンデカン、4,7-ジメルカプトメチル-1,11-ジメルカプト-3,6,9-トリチアウンデカン、5,7-ジメルカプトメチル-1,11-ジメルカプト-3,6,9-トリチアウンデカン、1,1,3,3-テトラキス(メルカプトメチルチオ)プロパン、テトラメルカプトペンタエリスリトール、1,3-ビス(メルカプトメチル)ベンゼン、1,4-ビス(メルカプトメチル)ベンゼン、およびチイランメタンチオールからなる群から選択される少なくとも1つを含む、上記[8]に記載の組成物。
[10]硫黄をさらに含む、上記[1]~[9]のいずれかに記載の組成物。
[11]予備重合触媒をさらに含む、上記[1]~[10]のいずれかに記載の組成物。
[12]前記予備重合触媒が、2-メルカプト-1-メチルイミダゾール、2-メチル-N-イミダゾール、および1,2,2,6,6-ペンタメチルピペリジルメタクリレ-トからなる群から選択される少なくとも1つを含む、上記[11]に記載の組成物。
[13]上記[1]~[12]のいずれかに記載の組成物を予備重合してなる、予備硬化物。
[14]上記[1]~[12]のいずれかに記載の組成物または上記[13]に記載の予備硬化物を硬化してなる、光学材料。
[15]上記[14]に記載の光学材料を含む、光学レンズ。
本発明に係る組成物は、式(1)で表される化合物(a)および1,2,3,5,6-ペンタチエパン(b)を含む。その他、式(2)で表される化合物(c)、ポリチオール(d)、硫黄、重合性化合物、予備重合触媒、重合触媒、重合調整剤、添加剤等をさらに含んでいてもよい。
化合物(a)は下記式(1)で表される。
1,2,3,5,6-ペンタチエパン(b)は、下記式で表される化合物であり、得られる光学材料の屈折率を向上させる効果がある。
一実施形態において、組成物は化合物(c)をさらに含んでいてもよい。前記化合物(c)は下記式(2)で表される。化合物(c)は化合物(a)と共重合可能であり、化合物(a)とともに用いることで硬化反応性を高める効果がある。
一実施形態において、組成物はポリチオ―ル(d)をさらに含んでいてもよい。組成物がポリチオール(d)を含有することで、得られる光学材料の加熱時の色調を改善させることができる。なお、ポリチオ―ル(d)は1分子あたりチオール基(-SH)を2つ以上有する化合物を意味する。この際、化合物(a)(芳香族骨格を有するエピスルフィド化合物)に該当するものはポリチオール(d)には含まれない。
一実施形態において、組成物は硫黄をさらに含んでいてもよい。硫黄を含むことにより、得られる光学材料の屈折率を向上させることができる。
一実施形態において、組成物は重合性化合物をさらに含んでいてもよい。重合性化合物を含むことにより光学材料の物性を調整することができる。なお、「重合性化合物」とは、化合物(a)と共重合できる化合物を意味する。
一実施形態において、組成物は予備重合触媒をさらに含んでいてもよい。予備重合触媒を含むことで、後述する予備硬化物を好適に製造することができる。
一実施形態において、組成物は重合触媒をさらに含んでいてもよい。重合触媒を含むことで、組成物を好適に重合させて光学材料を製造することができる。
一実施形態において、組成物は重合調整剤をさらに含んでいてもよい。
一実施形態において、組成物は添加剤をさらに含んでいてもよい。添加剤としては、特に制限されないが、酸化防止剤、ブルーイング剤、紫外線吸収剤、消臭剤、密着改善剤、離型性改善剤、ラジカル重合開始剤等が挙げられる。これらの添加剤は、単独で用いても、2種以上を組み合わせて用いてもよい。
一実施形態において、組成物は、以下の組成を有する。すなわち、組成物は、組成物総量に対して、
化合物(a):20~90質量%、好ましくは20~80質量%;
1,2,3,5,6-ペンタチエパン(b):5~70質量%、好ましくは5~40質量%;
化合物(c):0~50質量%、好ましくは0~40質量%;
ポリチオ―ル(d):0~10質量%、好ましくは0~5質量%;
硫黄:0~25質量%、好ましくは0~20質量%;
予備重合触媒:0~5質量%、好ましくは0~3質量%
重合触媒:0~5質量%、好ましくは0.0001~3質量%;および
重合調整剤:0~5質量%、好ましくは0.0001~3質量%;
を含む。
上述の組成物は、特に制限されず、公知の方法で製造することができる。具体的には、化合物(a)および1,2,3,5,6-ペンタチエパン(b)、並びに必要に応じて、化合物(c)、ポリチオール(d)、硫黄等を混合することで製造することができる。
本発明の一形態によれば、予備硬化物が提供される。前記予備硬化物は、上述の組成物を予備重合してなる。予備硬化物とすることで、粘度上昇の速度低下が可能になる、光学材料の透明性が向上する、ハンドリングが容易になる等の観点から好ましい。なお、本明細書において、「予備硬化物」とは、粘度5,000mps以下の液体を意味し、化合物(a)、1,2,3,5,6-ペンタチエパン(b)、化合物(c)、ポリチオール(d)、硫黄、および重合性化合物の少なくとも1つが重合反応により形成した重合体、部分重合体、オリゴマー等を含む。なお、本明細書において、「粘度」は、下記の方法により測定された値を採用するものとする。
コーンプレート型粘度計DV2THA CP(Brookfield AMETEK社製)を用い、30℃における予備硬化物の粘度を測定した。
本発明の一形態によれば、予備硬化物の製造方法が提供される。前記予備硬化物の製造方法は、組成物を予備重合する予備重合工程を含む。
予備重合工程は、組成物を予備重合する工程である。
本発明の一形態によれば、光学材料が提供される。前記光学材料は、上述の組成物または上述の予備硬化物を硬化してなる。すなわち、光学材料は、前記組成物または予備硬化物の硬化物である。
本発明の一形態によれば、光学材料の製造方法が提供される。前記製造方法は、上述の組成物または上述の予備硬化物を重合する重合工程を含む。
重合工程は、上述の組成物または上述の予備硬化物を重合する工程である。
上述の光学材料は、光学部材、機械部品材料、電気・電子部品材料、自動車部品材料、土木建築材料、成形材料の他、塗料や接着剤の材料等の各種用途に有用である。これらのうち、光学材料は、眼鏡レンズ、(デジタル)カメラ用撮像レンズ、光ビーム集光レンズ、光拡散用レンズ等のレンズ、LED用封止材、光学用接着剤、光伝送用接合材料、光ファイバー、プリズム、フィルター、回折格子、ウォッチガラス、表示装置用のカバーガラス等の透明ガラスやカバーガラス等の光学用途;LCDや有機ELやPDP等の表示素子用基板、カラーフィルター用基板、タッチパネル用基板、情報記録基板、ディスプレイバックライト、導光板、ディスプレイ保護膜、反射防止フィルム、防曇フィルム等のコーティング剤(コーティング膜)等の表示デバイス用途等に好適に使用される。前記光学材料は、特に、光学レンズ、プリズム、光ファイバー、情報記録基盤、フィルター等の用途に使用されることが好ましく、光学レンズに使用されることがより好ましい。すなわち、一実施形態において、上述の光学材料を含む、光学レンズが提供される。
デジタル精密屈折率計KPR-3000(株式会社島津製作所製)を用い、25℃におけるe線(546.1nm)の光学材料の屈折率を測定した。
光学材料を厚さ3mmに切り出した。TMA(熱機械分析)装置であるTMA/SS7100(セイコーインスツルメンツ製)にて、針入モードで測定を行った。なお、針状圧子として0.5mmφのピンを用い、圧子先端に加わる荷重を50gとした。また、昇温速度は5℃/分とした。得られたTMA曲線の温度微分曲線であるDTMAのピーク温度、およびピーク値から、軟化点(Tg)、DTMAのピーク値(DTg)を算出した。なお、DTMAのピーク値(DTg)が小さいほど熱による軟化が起こりにくく耐熱性が高いと評価される。ピーク値が負、またはピークが無い場合は軟化点無しとした。
・基準(X):Tg≧55℃
・基準(Y):DTg≦1.0
B:基準(X)および基準(Y)の一方を満たす
C:基準(X)および基準(Y)の双方を満たさない
温度計、滴下ロートを装着した四つ口フラスコに、TMB留分1を15.0g(86.1mmol)入れて反応容器を窒素置換した。その後、24%水酸化ナトリウム水溶液0.72gをメタノール59.4gに溶かした溶液およびトルエン65.0gを先の反応容器に加え、5℃まで冷却しながら撹拌した。次いで、撹拌しながらエピクロロヒドリン24.7g(266.8mmol)を液温5~15℃に保ちつつ滴下した。滴下終了後、更に3時間5℃で撹拌を行い、1,3,5-トリス(3―クロロ─2―ヒドロキシプロピルチオ)ベンゼンを得た。
TMB留分1に代えてTMB留分2を用いたことを除いては合成例3と同様の方法で化合物1の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物1の
純度100%の留分(a-1)および化合物4(1-クロロ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン)を含む留分(a-4)を得た。得られた結果を下記表2に示す。
TMB留分1に代えてTMB留分3を用いたことを除いては合成例3と同様の方法で化合物1の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物1(化合物1純度100%)の留分(a-1)および化合物5(1-t-ブチルチオ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン)を含む留分(a-5)を得た。得られた結果を下記表2に示す。
TMB留分1に代えてTMB留分5を用いたことを除いては合成例3と同様の方法で化合物1の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物1(化合物1純度100%)の留分(a-1)および化合物(1-ヒドロキシ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン)を含む留分(a-6)を得た。得られた結果を下記表2に示す。
TMB留分1に代えてTMB留分6を用いたことを除いては合成例3と同様の方法で化合物1の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物の純度100%の留分(a-1)および化合物7(1-ジメチルチオカルバモイル-3,5-ビス(β-エポチオプロピルチオ)ベンゼン)を含む留分(a-7)を得た。得られた結果を下記表2に示す。
TMB留分1に代えてTMB留分7を用いたことを除いては合成例3と同様の方法で化合物1の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物1の純度100%の留分(a-1)および化合物8(1-ジメチルカルバモイルチオ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン)を含む留分(a-8)を得た。得られた結果を下記表2に示す。
TMB留分1に代えて1,3-ジメルカプトベンゼン(東京化成工業株式会社製)を用いたことを除いては合成例3と同様の方法で化合物9(1,3-ビス(β-エピチオプロピルチオ)ベンゼン)の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物9の純度100%の留分(a-9)を得た。得られた結果を下記表2に示す。
TMB留分1に代えてビスムチオール(東京化成工業株式会社製)を用いたことを除いては、合成例3と同様の方法で化合物10(2,5-ビス(β-エピチオプロピルチオ)-1,3,4-チアジアゾール)の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物10(純度100%)の留分(a-10)を得た。得られた結果を下記表2に示す。
TMB留分1に代えてチオシアヌル酸(東京化成工業株式会社製)を用いたことを除いては、合成例3と同様の方法で化合物11(2,4,6-トリス(β-エピチオプロピルチオ)─1,3,5-トリアジン)の粗生成物を得た。粗生成物をシリカゲルカラム精製することで、化合物11(純度100%)の留分(a-11)を得た。得られた結果を下記表2に示す。
化合物-2:1-メルカプト-3,5-ビス(β-エポチオプロピルチオ)ベンゼン
化合物-3:1-(β-エポキシプロピルチオ)-3,5-ビス(β-エポチオプロピルチオ)ベンゼン
化合物-4:1-クロロ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン
化合物-5:1-t-ブチルチオ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン
化合物-6:1-ヒドロキシ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン
化合物-7:1-ジメチルチオカルバモイル-3,5-ビス(β-エポチオプロピルチオ)ベンゼン
化合物-8:1-ジメチルカルバモイルチオ-3,5-ビス(β-エポチオプロピルチオ)ベンゼン
化合物-9:1,3-ビス(β-エピチオプロピルチオ)ベンゼン
化合物10:2,5-ビス(β-エピチオプロピルチオ)-1,3,4-チアジアゾール
化合物11:2,4,6-トリス(β-エピチオプロピルチオ)─1,3,5-トリアジン
1,2,3,5,6-ペンタチエパン(b)を準備した。
c-2:ビス(β-エピチオプロピル)ジスルフィド
c-3:テトラキス(β-エピチオプロピルチオメチル)メタン
d-2:4,8-ジメルカプトメチル-1,11-ジメルカプト-3,6,9-トリチアウンデカン
d-3:1,2,6,7-テトラメルカプト-4-チアへプタン
留分a-1 65質量部、1,2,3,5,6-ペンタチエパン(b)(以下、単に「ペンタチエパン(b)」と称する) 35質量部、重合触媒としてテトラ-n-ブチルホスホニウムブロマイド0.02質量部、および重合調整剤としてジ-n-ブチルスズジクロライド0.05質量部を60℃で混合しながら真空脱気を行うことで、組成物を製造した。
表3に示す組成に変更したことを除いては、実施例1と同様の方法で組成物を製造した。
実施例1~22、比較例1~4で製造した組成物を60℃で5時間加熱し、100℃まで2時間かけて昇温させ、最後に100℃で1時間加熱して重合硬化させた。放冷後、120℃で30分アニール処理を行い、光学材料を製造した。
Claims (15)
- mが、2または3である、請求項1に記載の組成物。
- m+nが、2~6である、請求項1または2に記載の組成物。
- 前記化合物(a)の含有量が、組成物総質量に対して、20~80質量%である、請求項1~3のいずれか1項に記載の組成物。
- 前記1,2,3,5,6-ペンタチエパン(b)の含有量が、組成物総質量に対して、5~40質量%である、請求項1~4のいずれか1項に記載の組成物。
- 前記化合物(c)の含有量が、組成物総質量に対して、5~40質量%である、請求項6に記載の組成物。
- ポリチオ―ル(d)をさらに含む、請求項1~7のいずれか1項に記載の組成物。
- 前記ポリチオール(d)が、1,2,6,7-テトラメルカプト-4-チアへプタン、メタンジチオール、(スルファニルメチルジスルファニル)メタンチオール、ビス(2-メルカプトエチル)スルフィド、2,5-ビス(メルカプトメチル)-1,4-ジチアン、1,2-ビス(2-メルカプトエチルチオ)-3-メルカプトプロパン、4,8-ジメルカプトメチル-1,11-ジメルカプト-3,6,9-トリチアウンデカン、4,7-ジメルカプトメチル-1,11-ジメルカプト-3,6,9-トリチアウンデカン、5,7-ジメルカプトメチル-1,11-ジメルカプト-3,6,9-トリチアウンデカン、1,1,3,3-テトラキス(メルカプトメチルチオ)プロパン、テトラメルカプトペンタエリスリトール、1,3-ビス(メルカプトメチル)ベンゼン、1,4-ビス(メルカプトメチル)ベンゼン、およびチイランメタンチオールからなる群から選択される少なくとも1つを含む、請求項8に記載の組成物。
- 硫黄をさらに含む、請求項1~9のいずれか1項に記載の組成物。
- 予備重合触媒をさらに含む、請求項1~10のいずれか1項に記載の組成物。
- 前記予備重合触媒が、2-メルカプト-1-メチルイミダゾール、2-メチル-N-イミダゾール、および1,2,2,6,6-ペンタメチルピペリジルメタクリレ-トからなる群から選択される少なくとも1つを含む、請求項11に記載の組成物。
- 請求項1~12のいずれか1項に記載の組成物を予備重合してなる、予備硬化物。
- 請求項1~12のいずれか1項に記載の組成物または請求項13に記載の予備硬化物を硬化してなる、光学材料。
- 請求項14に記載の光学材料を含む、光学レンズ。
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| CN202180053277.9A CN115989217B (zh) | 2020-10-19 | 2021-09-10 | 组合物以及使用它的光学材料和透镜 |
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| WO2024048634A1 (ja) * | 2022-09-02 | 2024-03-07 | 住友化学株式会社 | 組成物、硬化物、表示装置、及び固体撮像素子 |
| WO2024171777A1 (ja) * | 2023-02-16 | 2024-08-22 | 住友化学株式会社 | 化合物及びその製造方法、組成物、硬化物、表示装置、並びに固体撮像素子 |
| WO2025033334A1 (ja) * | 2023-08-07 | 2025-02-13 | 三菱瓦斯化学株式会社 | 光学材料用組成物およびこれを用いた光学材料 |
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| KR20230088885A (ko) | 2023-06-20 |
| JPWO2022085330A1 (ja) | 2022-04-28 |
| US12486352B2 (en) | 2025-12-02 |
| EP4206187A4 (en) | 2023-12-27 |
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