WO2023190876A1 - ペンタエリスリトールメルカプトカルボン酸エステルの製造方法、重合性組成物、樹脂、光学材料、及び眼鏡レンズ - Google Patents
ペンタエリスリトールメルカプトカルボン酸エステルの製造方法、重合性組成物、樹脂、光学材料、及び眼鏡レンズ Download PDFInfo
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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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/757—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing at least two isocyanate or isothiocyanate groups linked to the cycloaliphatic ring by means of an aliphatic group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
- C07C319/02—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of thiols
- C07C319/12—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of thiols by reactions not involving the formation of mercapto groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/50—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton
- C07C323/51—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
- C07C323/52—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
-
- 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
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/242—Catalysts containing metal compounds of tin organometallic compounds containing tin-carbon bonds
-
- 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
- C08G18/3876—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing mercapto groups
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
-
- 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
Definitions
- the present disclosure relates to a method for producing pentaerythritol mercaptocarboxylic acid ester, a polymerizable composition, a resin, an optical material, and a spectacle lens.
- Plastic eyeglass lenses have been widely known for a long time.
- Polythiourethane resin is used as a material for eyeglass lenses (for example, Patent Document 1).
- Polythiourethane resin is a material that has a suitable refractive index, so it can be used as an eyeglass lens with a suitable thickness, and is easy to ensure processability and impact resistance, so it is widely used.
- Pentaerythritol mercaptocarboxylic acid ester is used as the monomer of the polythiourethane resin.
- Patent Document 2 as a method for synthesizing the compound, in a method for producing pentaerythritol mercaptocarboxylic acid ester in which pentaerythritol and mercaptocarboxylic acid are reacted, as the pentaerythritol, a 5% by weight aqueous solution of the pentaerythritol is prepared, A manufacturing method is described in which the aqueous solution has an absorbance of 0.07 or less at a wavelength of 270 nm as measured in a quartz cell with an optical path length of 50 mm. It is stated that according to the manufacturing method, a colorless and transparent resin molded article having excellent appearance such as hue can be stably manufactured.
- One embodiment of the present disclosure provides a method for producing a pentaerythritol mercaptocarboxylic acid ester that provides a resin with less coloring and less haze, a polymerizable composition containing the pentaerythritol mercaptocarboxylic acid ester, and a polymerizable composition containing the pentaerythritol mercaptocarboxylic acid ester.
- a cured resin, an optical material containing the resin, and an eyeglass lens containing the resin are provided.
- the inventors of the present invention have found that the above-mentioned problem can be solved by the following configuration, which can be said to be the exact opposite of the solution of the above-mentioned patent document 2.
- pentaerythritol which has an absorbance of 0.1 or more at a wavelength of 270 nm in a 5% by mass aqueous solution measured in a quartz cell with an optical path length of 50 mm
- the inventors have achieved a resin with less coloring and less cloudiness. It has been found that pentaerythritol mercaptocarboxylic acid ester can be obtained.
- One embodiment according to the present disclosure includes: Including dehydrating pentaerythritol and mercaptocarboxylic acid,
- the present invention relates to a method for producing a pentaerythritol mercaptocarboxylic acid ester, wherein the pentaerythritol has an absorbance of 0.1 or more at a wavelength of 270 nm of a 5% by mass aqueous solution of the pentaerythritol measured in a quartz cell with an optical path length of 50 mm.
- a method for producing a pentaerythritol mercaptocarboxylic acid ester that yields a resin with little coloring and little cloudiness, a polymerizable composition containing the pentaerythritol mercaptocarboxylic acid ester, and a polymerizable composition It is possible to provide a resin that is a cured product, an optical material containing the resin, and a spectacle lens containing the resin.
- the present embodiment an embodiment of the present disclosure (hereinafter referred to as “the present embodiment”) will be described in detail, but the present invention is not limited thereto, and various modifications can be made without departing from the gist thereof. be.
- the notation of a numerical range of "1 to 100” includes both the lower limit value "1” and the upper limit value "100”. The same applies to other numerical ranges.
- One embodiment according to the present disclosure includes dehydrating pentaerythritol and mercaptocarboxylic acid, and the pentaerythritol is a 5% by mass aqueous solution of the pentaerythritol measured in a quartz cell with an optical path length of 50 mm.
- the present invention relates to a method for producing pentaerythritol mercaptocarboxylic acid ester having an absorbance of 0.1 or more at a wavelength of 270 nm.
- a method for producing a pentaerythritol mercaptocarboxylic acid ester that yields a resin with little coloring and little cloudiness, a polymerizable composition containing the pentaerythritol mercaptocarboxylic acid ester, and a polymerizable composition It is possible to provide a resin that is a cured product, an optical material containing the resin, and a spectacle lens containing the resin.
- Pentaerythritol used in this embodiment has an absorbance of 0.1 or more at a wavelength of 270 nm of a 5% by mass aqueous solution of pentaerythritol measured in a quartz cell with an optical path length of 50 mm. It has been surprisingly found that even when pentaerythritol having an absorbance in this range is used, a resin with less coloring and less haze can be obtained.
- the absorbance is preferably 0.3 or more, more preferably 0.5 or more, and still more preferably 1.0 or more.
- the upper limit of the absorbance is not particularly limited, but it may be 20 or less, preferably 10 or less, more preferably 5.0 or less, still more preferably 3.0 or less, and still more preferably 2.0 or less. It is.
- the method for measuring the absorbance is as described in Examples. In order to set the absorbance within the range, for example, pentaerythritol can be purified to adjust the absorbance to the range.
- the method for producing pentaerythritol mercaptocarboxylic acid ester includes, for example, Dehydrating mercaptocarboxylic acid and pentaerythritol (hereinafter also referred to as “reaction step”), Washing the pentaerythritol mercaptocarboxylic acid ester obtained by the dehydration reaction (hereinafter also referred to as “cleaning step”) including.
- reaction step Dehydrating mercaptocarboxylic acid and pentaerythritol
- cleaning step washing the pentaerythritol mercaptocarboxylic acid ester obtained by the dehydration reaction
- reaction process In the reaction step, mercaptocarboxylic acid and pentaerythritol are subjected to a dehydration reaction under solvent-free conditions. In the reaction step, it is preferable to carry out the reaction under solvent-free conditions. This eliminates the need to distill off the solvent, thereby reducing the subsequent purification load.
- solvent-free conditions means conditions in which no organic solvent such as toluene is used, and specifically, the amount of organic solvent is 20% of the total mass of mercaptocarboxylic acid and pentaerythritol. It means less than % by mass.
- the amount of organic solvent is preferably 10% by mass or less, more preferably 5% by mass or less, still more preferably 1% by mass or less, based on the total mass of mercaptocarboxylic acid and pentaerythritol.
- the mercaptocarboxylic acid preferably has 2 to 4 carbon atoms, more preferably 2 to 3 carbon atoms.
- the mercaptocarboxylic acid is preferably 2-mercaptoacetic acid or 3-mercaptopropionic acid.
- an ester bond is formed by a dehydration reaction by the reaction of mercaptocarboxylic acid and pentaerythritol, and pentaerythritol mercaptocarboxylic acid ester is obtained.
- Pentaerythritol preferably has a purity of 90% by mass or more, more preferably a purity of 95% by mass or more, and even more preferably a purity of 98% by mass or more.
- Pentaerythritol may contain more than 1.0% by mass of sodium. Even when containing such a high concentration of sodium, a pentaerythritol mercaptocarboxylic acid ester having a low Hazen color number (APHA) can be obtained.
- APHA Hazen color number
- the molar ratio of mercaptocarboxylic acid and pentaerythritol is preferably 3.5 to 6.0, more preferably 4.0 to 5.0, even more preferably 4. It is 1 to 5.5.
- dehydration condensation is preferably carried out in the presence of a sulfonic acid compound.
- Sulfonic acid compounds act as acid catalysts and promote dehydration reactions.
- the sulfonic acid compound include aromatic sulfonic acids such as toluenesulfonic acid, and alkylsulfonic acids.
- alkylsulfonic acids are preferred from the viewpoint of reducing coloring.
- the alkylsulfonic acid include methanesulfonic acid, ethanesulfonic acid, 1-propanesulfonic acid, and trifluoromethanesulfonic acid. Among these, methanesulfonic acid is preferred from the viewpoint of reducing coloring.
- the amount of the sulfonic acid compound is preferably 0.1 to 10% by mass, more preferably 0.2 to 5% by mass, and even more preferably 0. .3 to 3% by mass.
- the reaction step is preferably carried out under reduced pressure while excluding water from the system.
- water from the system By excluding water from the system, the equilibrium of the ester reaction can be tilted toward the product side, and the yield can be improved.
- the reaction step is preferably carried out at a temperature of 90 to 98°C from the viewpoint of reducing coloration.
- the temperature of the reaction step is preferably 92-97°C, more preferably 93-96°C.
- washing step the pentaerythritol mercaptocarboxylic acid ester obtained in the reaction step is washed. Washing is performed, for example, by washing the mixture obtained in the reaction step with water. Thereby, catalysts such as sulfonic acid compounds can be removed.
- Pentaerythritol mercaptocarboxylic acid ester is obtained by the production method according to the present embodiment.
- the Hazen color number (APHA) of the obtained pentaerythritol mercaptocarboxylic acid ester is preferably 15 or less, more preferably 10 or less, still more preferably 7 or less, and still more preferably 6 or less.
- the measured value (g/eq) of the SH number of the obtained pentaerythritol mercaptocarboxylic acid ester/the theoretical value (g/eq) of the SH number of the pentaerythritol mercaptocarboxylic acid ester is preferably 1. It is 10 or less, more preferably 1.08 or less, still more preferably 1.06 or less.
- the actual measured value of the SH number is based on the measurement method described in Examples.
- the polymerizable composition according to the present embodiment includes a pentaerythritol mercaptocarboxylic acid ester obtained by the production method according to the present embodiment and a polyiso(thio)cyanate compound. Pentaerythritol mercaptocarboxylic acid ester is polymerized by reacting with polyiso(thio)cyanate to obtain a cured product.
- polyiso(thio)cyanate examples include polyisocyanate compounds having an aromatic ring, alicyclic polyisocyanate compounds, and linear or branched aliphatic polyisocyanate compounds.
- polyisocyanate compound having an aromatic ring examples include diisocyanatobenzene, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, ethylphenylene diisocyanate, isopropylphenylene diisocyanate, and dimethylphenylene diisocyanate.
- Examples of the alicyclic polyisocyanate compound include 1,3-diisocyanatocyclohexane, isophorone diisocyanate, 1,3-bis(isocyanatomethyl)cyclohexane, 1,4-bis(isocyanatomethyl)cyclohexane, Dicyclohexylmethane-4,4'-diisocyanate, 2,5-bis(isocyanatomethyl)-bicyclo[2.2.1]heptane, 2,6-bis(isocyanatomethyl)-bicyclo[2.2.
- Heptane 2,5-diisocyanato-1,4-dithiane, 2,5-bis(isocyanatomethyl)-1,4-dithiane, 4,5-diisocyanato-1,3-dithiolane, 4,5-bis Examples include (isocyanatomethyl)-1,3-dithiolane and 4,5-bis(isocyanatomethyl)-2-methyl-1,3-dithiolane.
- linear or branched aliphatic polyisocyanate compounds include hexamethylene diisocyanate, 2,2-dimethylpentane diisocyanate, 2,2,4-trimethylhexane diisocyanate, butene diisocyanate, 1 , 3-butadiene-1,4-diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, 1,6,11-undecane triisocyanate, 1,3,6-hexamethylene triisocyanate, 1 , 8-diisocyanato-4-isocyanatomethyloctane, bis(isocyanatoethyl) carbonate, bis(isocyanatoethyl)ether, lysine diisocyanatomethyl ester, lysine triisocyanate, bis(isocyanatomethyl) sulfide, bis( isocyanatoethyl) sulfide, bis(isocyanatopropyl)
- the polyiso(thio)cyanate is preferably bis(isocyanatomethyl)bicyclo[2.2.1]heptane, bis(isocyanatomethyl)cyclohexane, bis(isocyanatomethyl)benzene, tolylene diisocyanate, diphenylmethane diisocyanate.
- the compound contains at least one compound selected from the group consisting of isocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, and pentamethylene diisocyanate (hereinafter also referred to as "preferred isocyanate compound”), and more preferably bis( isocyanatomethyl)benzene, tolylene diisocyanate, and diphenylmethane diisocyanate.
- Bis(isocyanatomethyl)bicyclo[2.2.1]heptane is, for example, 2,5-bis(isocyanatomethyl)bicyclo[2.2.1]heptane and 2,6-bis(isocyanatomethyl)bicyclo [2.2.1] One or more selected from the group consisting of heptane, preferably 2,5-bis(isocyanatomethyl)bicyclo[2.2.1]heptane and 2,6-bis(isocyanatomethyl) (natomethyl)bicyclo[2.2.1]heptane.
- Examples of bis(isocyanatomethyl)cyclohexane include 1,3-bis(isocyanatomethyl)cyclohexane and 1,4-bis(isocyanatomethyl)cyclohexane. Among these, 1,3-bis(isocyanatomethyl)cyclohexane is preferred.
- Examples of bis(isocyanatomethyl)benzene include 1,3-bis(isocyanatomethyl)benzene and 1,4-bis(isocyanatomethyl)benzene. Among these, 1,3-bis(isocyanatomethyl)benzene is preferred.
- Examples of tolylene diisocyanate include 2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate.
- 2,4-tolylene diisocyanate is preferred.
- diphenylmethane diisocyanate include 4,4'-diphenylmethane diisocyanate.
- dicyclohexylmethane diisocyanate include dicyclohexylmethane-4,4'-diisocyanate.
- Polyiso(thio)cyanate compounds include bis(isocyanatomethyl)-bicyclo[2.2.1]heptane, bis(isocyanatomethyl)cyclohexane, bis(isocyanatomethyl)benzene, isophorone diisocyanate, pentamethylene diisocyanate, and hexane. It is preferable to contain at least one type selected from methylene diisocyanate, and among these, bis(isocyanatomethyl)bicyclo[2.2.1]heptane, bis(isocyanatomethyl)cyclohexane, and bis(isocyanatomethyl)benzene. is preferred.
- suitable isocyanate compound in the polyiso(thio)cyanate is preferably 80% by mass or more, more preferably 90% by mass or more, and even more preferably 95% by mass or more and 100% by mass or less. It is.
- the equivalent ratio of the mercapto group of the pentaerythritol mercaptocarboxylic acid ester to the isocyanato group of the polyiso(thio)cyanate is preferably 40/60 or more, more preferably 43/57 or more, and even more preferably 45 /55 or more, and preferably 60/40 or less, more preferably 55/45 or less, even more preferably 53/47 or less.
- a polymerization catalyst may be used for curing the isocyanate component and thiol component.
- the polymerization catalyst include tin compounds and nitrogen-containing compounds.
- the tin compound include alkyltin compounds and alkyltin halide compounds.
- the alkyltin compound include dibutyltin diacetate and dibutyltin dilaurate.
- the alkyltin halide compound include dibutyltin dichloride, dimethyltin dichloride, monomethyltin trichloride, trimethyltin chloride, tributyltin chloride, tributyltin fluoride, and dimethyltin dibromide.
- dibutyltin diacetate, dibutyltin dilaurate, dibutyltin dichloride, and dimethyltin dichloride are preferred, and dimethyltin dichloride is more preferred.
- nitrogen-containing compounds examples include tertiary amines, quaternary ammonium salts, imidazole compounds, and pyrazole compounds.
- the tertiary amine is preferably a hindered amine.
- tertiary amine examples include triethylamine, tri-n-propylamine, triisopropylamine, tri-n-butylamine, triisobutylamine, N,N-dimethylbenzylamine, N-methylmorpholine, N,N-dimethylcyclohexyl Amine, pentamethyldiethylenetriamine, bis(2-dimethylaminoethyl)ether, N-methylmorpholine, N,N'-dimethylpiperazine, N,N,N',N'-tetramethylethylenediamine, 1,4-diazabicyclo[2 .2.2] octane (DABCO).
- DABCO octane
- hindered amines include 1,2,2,6,6-pentamethyl-4-piperidinol, 1,2,2,6,6-pentamethyl-4-hydroxyethyl-4-piperidinol, methyl-1,2,2 , 6,6-pentamethyl-4-piperidyl sebacate, methyl-1,2,2,6,6-pentamethyl-4-piperidyl sebacate and bis(1,2,2,6,6-pentamethyl-4-piperidyl ) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis(2,2,6,6-tetramethyl-1-(octyloxy)-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate, tetrakis(1 , 2,2,6,6-pentamethyl-4-piperid
- Examples of quaternary ammonium salts include tetraethylammonium hydroxide.
- imidazole compounds include imidazole, 1-methyl-2-mercapto-1H-imidazole, 1,2-dimethylimidazole, benzylmethylimidazole, and 2-ethyl-4-imidazole.
- pyrazole compounds include pyrazole and 3,5-dimethylpyrazole. Among these, tertiary amines such as hindered amines, imidazole compounds, and pyrazole compounds are preferred, imidazole compounds are more preferred, and 1-methyl-2-mercapto-1H-imidazole is even more preferred.
- the amount of the polymerization catalyst used is preferably 0.001 to 2 parts by mass, more preferably 0.005 to 1 part by mass, and even more preferably 0.007 parts by mass, based on 100 parts by mass of the total amount of the isocyanate component and thiol component. ⁇ 0.5 part by mass.
- the resin according to this embodiment is a cured product of the polymerizable composition according to the above embodiment.
- the cured product is obtained by polymerizing the components in the polymerizable composition.
- the polymerization conditions can be appropriately set depending on the polymerizable composition.
- the polymerization initiation temperature is preferably 0°C or higher, more preferably 10°C or higher, and preferably 50°C or lower, more preferably 40°C or lower. It is preferable to raise the temperature from the polymerization initiation temperature and then heat to cure and form.
- the maximum heating temperature is usually 110°C or more and 130°C or less.
- Resins are used in various optical materials such as eyeglass lenses, camera lenses, prisms, optical fibers, and base materials used in these, recording medium substrates used in optical disks or magnetic disks, and optical filters attached to computer displays. used. Among these optical materials, it is preferable to use them as eyeglass lenses.
- the eyeglass lens according to this embodiment includes the resin according to this embodiment. Further, the spectacle lens according to the present embodiment preferably includes a lens base material containing the resin according to the present embodiment.
- the lens base material preferably contains the resin according to the present embodiment in an amount of 90% by mass or more, more preferably 95% by mass or more, still more preferably 99% by mass or more.
- the lens base material may contain other additives such as a mold release agent, a coloring agent, an antioxidant, an anti-coloring agent, and a fluorescent whitening agent. These may be used alone or in combination of two or more.
- the lens base material may be either a finished lens or a semi-finished lens.
- the surface shape of the lens base material is not particularly limited, and may be a flat surface, a convex surface, a concave surface, or the like.
- the lens base material may be used for any purpose such as a single focus lens, a multifocal lens, or a progressive power lens.
- a progressive power lens a near vision region (near vision region) and a progressive vision region (intermediate region) are usually included in the lower region, and a distance vision region (distance vision region) is included in the lower region. is included in the upper region.
- a colorless one is usually used, but a colored one can also be used as long as the transparency is not impaired.
- the refractive index ne of the lens base material is preferably 1.60 or more.
- the upper limit of the refractive index ne of the lens base material is not particularly limited, but may be, for example, 1.80 or less.
- the spectacle lens according to this embodiment may include at least one layer selected from the group consisting of a hard coat layer, a base layer, and an antireflection layer.
- the method for producing a spectacle lens according to the present embodiment includes curing a polymerizable composition containing a thiol component containing the compound (1) obtained by the production method of the present embodiment and an isocyanate component in a mold. include. Odor is suppressed by using the compound obtained by the method for producing compound (1) according to the above-described embodiment. Further, according to the method for manufacturing a spectacle lens according to the present embodiment, a polythiourethane resin having a high refractive index and a colorless and transparent appearance can be obtained. The method for manufacturing a spectacle lens according to the present embodiment may include annealing the cured resin.
- the polymerization is preferably a cast polymerization method.
- the lens base material can be obtained, for example, by injecting a polymerizable composition into a mold made of a combination of a glass or metal mold and a tape or gasket, and polymerizing the composition.
- the polymerization conditions can be appropriately set depending on the polymerizable composition.
- the polymerization initiation temperature is preferably 0°C or higher, more preferably 10°C or higher, and preferably 50°C or lower, more preferably 40°C or lower. It is preferable to raise the temperature from the polymerization initiation temperature and then heat to cure and form.
- the maximum heating temperature is usually 110°C or more and 130°C or less.
- the lens base material may be released from the mold and annealing treatment may be performed.
- the temperature of the annealing treatment is preferably 100 to 150°C.
- the measurement sample solution was loaded into a quartz cell with an optical path length of 50 mm, and the wavelength was measured using a spectrophotometer (equipment name: UH4150) manufactured by Hitachi High-Tech Science Co., Ltd. The absorbance at 270 nm was determined.
- APHA Hazen color number
- ⁇ Cloudy> The degree of cloudiness of the resin obtained by thermally polymerizing the polymerizable composition was evaluated according to the following criteria. (Evaluation criteria) A: No cloudiness was observed in the resin cured by thermal polymerization. B: White cloudiness was observed in the resin cured by thermal polymerization, but the resin had transparency with cloudy spots scattered throughout. C: Thermal polymerization. Cloudiness was observed in the cured resin, and the entire resin was cloudy and the entire resin was white.
- Example 1 In a 1000 mL flask, 74.6 parts by mass (0.548 mol) of pentaerythritol, whose absorbance measured by the above method was 1.40, and 240.0 parts by mass (2.261 mol) of 3-mercaptopropionic acid. Then, 1.67 parts by mass of methanesulfonic acid was added thereto, and the mixture was immersed in an oil bath whose temperature was adjusted to around 100°C, and stirred and reacted for 3 hours while degassing using a vacuum pump (internal temperature: 97°C). After the reaction was completed, it was washed three times with 400 mL of water, and water was removed using a vacuum pump.
- the synthesized pentaerythritol mercaptocarboxylic acid ester had a refractive index n d (25° C.) of 1.528, an SHV of 125.62, and an APHA of 5. 53.15 parts by mass of 1,3-bis(isocyanatomethyl)cyclohexane (HXDI), 0.22 parts by mass of acidic phosphoric acid ester "JP506H” (trade name, manufactured by Johoku Kagaku Kogyo Co., Ltd.), and 0 parts of dimethyldichlorotin (DMTDCl) 0.072 parts by mass and 0.12 parts by mass of the ultraviolet absorber "SEESORB707" (trade name, manufactured by Cipro Kasei Co., Ltd.) were mixed and dissolved, and 66.85 parts by mass of the pentaerythritol mercaptocarboxylic acid ester described above was added, followed by stirring and desorption.
- HXDI 1,3-bis
- the mixture was heated for 30 minutes to homogenize, filtered through a 10 micron PTFE filter, and 50g of the mixture was poured into a glass sample bottle, sealed tightly, and poured into a flat glass mold adjusted to have a thickness of 3 mm. Polymerization was carried out by heating from 20° C. to 120° C. for 24 hours, cooled to near room temperature, and the resin cylinder and 3 cm thick flat plate in the sample bottle were taken out. The above-mentioned evaluations were performed on the obtained resin cylinders and planar plates.
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Abstract
Description
ペンタエリスリトールと、メルカプトカルボン酸とを脱水反応させることを含み、
前記ペンタエリスリトールが、光路長50mmの石英セルにて測定される前記ペンタエリスリトールの5質量%水溶液の波長270nmにおける吸光度が0.1以上である、ペンタエリスリトールメルカプトカルボン酸エステルの製造方法に関する。
本開示に係る一実施形態は、ペンタエリスリトールと、メルカプトカルボン酸とを脱水反応させることを含み、前記ペンタエリスリトールが、光路長50mmの石英セルにて測定される前記ペンタエリスリトールの5質量%水溶液の波長270nmにおける吸光度が0.1以上である、ペンタエリスリトールメルカプトカルボン酸エステルの製造方法に関する。本開示の一実施形態によれば、着色が少なく、曇りの少ない樹脂の得られるペンタエリスリトールメルカプトカルボン酸エステルの製造方法、当該ペンタエリスリトールメルカプトカルボン酸エステルを含有する重合性組成物、当該重合性組成物の硬化物である樹脂、当該樹脂を含む光学材料、及び当該樹脂を含む眼鏡レンズを提供することができる。
本実施形態に用いられるペンタエリスリトールは、光路長50mmの石英セルにて測定されるペンタエリスリトールの5質量%水溶液の波長270nmにおける吸光度が0.1以上である。当該範囲の吸光度を示すペンタエリスリトールを用いる場合であっても、驚くべきことに着色が少なく、曇りの少ない樹脂の得られることが見出された。当該吸光度は、好ましくは0.3以上であり、より好ましくは0.5以上であり、更に好ましくは1.0以上である。当該吸光度は、その上限は特に限定されないが、20以下であってもよく、好ましくは10以下、より好ましくは5.0以下、更に好ましくは3.0以下であり、更に好ましくは2.0以下である。当該吸光度の測定方法は実施例に記載の方法による。当該吸光度の範囲とするためには、例えば、ペンタエリスリトールを精製することにより、当該吸光度の範囲に調整することができる。
メルカプトカルボン酸とペンタエリスリトールとを脱水反応させること(以下、「反応工程」ともいう)、
前記脱水反応させることにより得られるペンタエリスリトールメルカプトカルボン酸エステルを洗浄すること(以下、「洗浄工程」ともいう)
を含む。
以下、各工程について詳細に説明する。
反応工程では、メルカプトカルボン酸とペンタエリスリトールとを無溶媒条件下で脱水反応させる。反応工程において無溶媒条件下で反応を行うことが好ましい。これにより溶媒を留去する必要がなくなるため、その後の精製負荷を低減することができる。
ここで、「無溶媒条件下」とは、トルエンなどの有機溶媒を使用しない条件を意味し、具体的には、有機溶媒量が、メルカプトカルボン酸とペンタエリスリトールとの合計質量に対して、20質量%以下であることを意味する。有機溶媒量は、メルカプトカルボン酸とペンタエリスリトールとの合計質量に対して、好ましくは10質量%以下であり、より好ましくは5質量%以下であり、更に好ましくは1質量%以下である。
メルカプトカルボン酸は、炭素数2~4であることが好ましく、炭素数2~3であることがより好ましい。メルカプトカルボン酸は、2-メルカプト酢酸、又は3-メルカプトプロピオン酸であることが好ましい。また、メルカプトカルボン酸とペンタエリスリトールとの反応により脱水反応によりエステル結合が形成され、ペンタエリスリトールメルカプトカルボン酸エステルが得られる。
スルホン酸化合物としては、例えば、トルエンスルホン酸などの芳香族スルホン酸、アルキルスルホン酸が挙げられる。これらの中でも、着色を低減する観点から、アルキルスルホン酸が好ましい。アルキルスルホン酸としては、例えば、メタンスルホン酸、エタンスルホン酸、1-プロパンスルホン酸、トリフルオロメタンスルホン酸が挙げられる。これらの中でも、着色を低減する観点から、メタンスルホン酸が好ましい。
洗浄工程では、反応工程により得られるペンタエリスリトールメルカプトカルボン酸エステルを洗浄する。洗浄は、例えば、反応工程により得られた混合物を水洗することにより行われる。これにより、スルホン酸化合物などの触媒を除去することができる。
本実施形態に係る製造方法によりペンタエリスリトールメルカプトカルボン酸エステルが得られる。
[SH価の理論値]=[分子量]/[一分子中のSH基の数]・・・(A)
本実施形態に係る重合性組成物は、本実施形態に係る製造方法により得られるペンタエリスリトールメルカプトカルボン酸エステルと、ポリイソ(チオ)シアナート化合物とを含む。ペンタエリスリトールメルカプトカルボン酸エステルは、ポリイソ(チオ)シアナートと反応させることで重合して硬化物が得られる。
ポリイソ(チオ)シアナートとしては、例えば、芳香環を有するポリイソシアナート化合物、脂環式ポリイソシアナート化合物、直鎖又は分岐鎖の脂肪族ポリイソシアナート化合物が挙げられる。
これらは、1種又は2種以上を用いてもよい。
ビス(イソシアナトメチル)ビシクロ[2.2.1]ヘプタンは、例えば、2,5-ビス(イソシアナトメチル)ビシクロ[2.2.1]ヘプタン及び2,6-ビス(イソシアナトメチル)ビシクロ[2.2.1]ヘプタンからなる群から選ばれる1種以上が挙げられ、好ましくは2,5-ビス(イソシアナトメチル)ビシクロ[2.2.1]ヘプタン及び2,6-ビス(イソシアナトメチル)ビシクロ[2.2.1]ヘプタンの混合物である。
ビス(イソシアナトメチル)シクロヘキサンとしては、例えば、1,3-ビス(イソシアナトメチル)シクロヘキサン及び1,4-ビス(イソシアナトメチル)シクロヘキサンが挙げられる。これらの中でも、1,3-ビス(イソシアナトメチル)シクロヘキサンが好ましい。
ビス(イソシアナトメチル)ベンゼンとしては、例えば、1,3-ビス(イソシアナトメチル)ベンゼン及び1,4-ビス(イソシアナトメチル)ベンゼンが挙げられる。これらの中でも、1,3-ビス(イソシアナトメチル)ベンゼンが好ましい。
トリレンジイソシアナートとしては、例えば、2,4-トリレンジイソシアナート及び2,6-トリレンジイソシアナートが挙げられる。これらの中でも2,4-トリレンジイソシアナートが好ましい。
ジフェニルメタンジイソシアナートとしては、例えば、4,4’-ジフェニルメタンジイソシアナートが挙げられる。
ジシクロヘキシルメタンジイソシアナートとしては、例えば、ジシクロヘキシルメタン-4,4’-ジイソシアナートが挙げられる。
重合触媒としては、例えば、スズ化合物、含窒素化合物が挙げられる。
スズ化合物としては、例えば、アルキルスズ化合物、アルキルスズハライド化合物が挙げられる。
アルキルスズ化合物としては、例えば、ジブチルスズジアセテート、ジブチルスズジラウレートが挙げられる。
アルキルスズハライド化合物としては、例えば、ジブチルスズジクロライド、ジメチルスズジクロライド、モノメチルスズトリクロライド、トリメチルスズクロライド、トリブチルスズクロライド、トリブチルスズフロライド、ジメチルスズジブロマイドが挙げられる。
これらの中でも、ジブチルスズジアセテート、ジブチルスズジラウレート、ジブチルスズジクロライド、ジメチルスズジクロライドが好ましく、ジメチルスズジクロライドがより好ましい。
イミダゾール系化合物としては、例えば、イミダゾール、1-メチル-2-メルカプト-1H-イミダゾール、1,2-ジメチルイミダゾール、ベンジルメチルイミダゾール、2-エチル-4-イミダゾールが挙げられる。
ピラゾール系化合物としては、例えば、ピラゾール、3,5-ジメチルピラゾールが挙げられる。
これらの中でも、ヒンダードアミン等の3級アミン、イミダゾール系化合物、ピラゾール系化合物が好ましく、イミダゾール系化合物がより好ましく、1-メチル-2-メルカプト-1H-イミダゾールが更に好ましい。
本実施形態に係る樹脂は、上述の実施形態に係る重合性組成物の硬化物である。硬化物は、重合性組成物中の成分を重合することで得られる。
本実施形態に係る眼鏡レンズは、本実施形態に係る樹脂を含む。
また、本実施形態に係る眼鏡レンズは、本実施形態に係る樹脂を含む、レンズ基材を備えることが好ましい。
レンズ基材は、好ましくは本実施形態に係る樹脂を90質量%以上含有し、より好ましくは95質量%以上、さらに好ましくは99質量%以上含有する。
本実施形態に係る眼鏡レンズの製造方法は、本実施形態の製造方法により得られる化合物(1)を含むチオール成分と、イソシアナート成分とを含む重合性組成物を成形型内で硬化させることを含む。
上述の実施形態に係る化合物(1)の製造方法により得られる化合物を用いることで臭気が抑制される。また、本実施形態に係る眼鏡レンズの製造方法によれば、高屈折率であり、外観が無色透明なポリチオウレタン樹脂が得らえる。
本実施形態に係る眼鏡レンズの製造方法は、当該硬化後の樹脂をアニール処理することと、を含んでいてもよい。
<ペンタエリスリトールの5質量%水溶液の波長270nmにおける吸光度>
ペンタエリスリトール5質量部に、蒸留水を加え、100質量部の試料液を調製した。次に、60℃に加温して30分攪拌した。20℃まで冷却し、0.45μmのフィルターでろ過した水溶液を測定試料とした。室温(25℃)でフィルターから終了から1時間の時点で、測定試料溶液を光路長50mmの石英セルに装入し、株式会社日立ハイテクサイエンス製の分光光度計(機器名:UH4150)にて波長270nmの吸光度を求めた。
得られたモノマーを光路長50mmの石英セルに装入し、JIS K0071-1:2017の方法によりハーゼン色数(APHA)を測定した。
重合性組成物を熱重合して得られた樹脂の白濁の程度について以下の基準で評価した。
(評価基準)
A:熱重合により硬化した樹脂に白濁が観測されなかった
B:熱重合により硬化した樹脂に白濁が観測されたが、樹脂中に白濁点が散在し透明性を有していた
C:熱重合により硬化した樹脂に白濁が観測され、樹脂全体が白濁し全体が白色であった
1000mLのフラスコ内に、上述の方法により測定された吸光度が1.40であったペンタエリスリトールを74.6質量部(0.548mol)、3-メルカプトプロピオン酸240.0質量部(2.261mol)及びメタンスルホン酸1.67質量部を加えて100℃近傍に温調したオイルバスに浸漬し3時間真空ポンプを用いて脱気しながら攪拌反応させた(内温97℃)。
反応終了後、400mLの水にて3回水洗し、真空ポンプにて水分を除去した。合成されたペンタエリスリトールメルカプトカルボン酸エステルの屈折率はnd(25℃)1.528、SHVは125.62、APHAは5であった。
1,3-ビス(イソシアネートメチル)シクロヘキサン(HXDI)53.15質量部、酸性リン酸エステル「JP506H」(商品名、城北化学工業株式会社製)0.22質量部及びジメチルジクロロ錫(DMTDCl)0.072質量部、紫外線吸収剤「SEESORB707」(商品名、シプロ化成株式会社製)0.12質量部を混合溶解させ、前述記載のペンタエリスリトールメルカプトカルボン酸エステル66.85質量部を加えて攪拌脱気を30分行い均一化させ、10ミクロンPTFEフィルターで濾過したものをガラス製サンプル瓶に50g注ぎ密栓、さらに3mm厚になるように調整された平板ガラスモールドの型に注入した。20℃から120℃まで24時間加熱重合し、室温近傍まで冷却させて、サンプル瓶内の樹脂円柱及び3cm厚の平版を取り出した。得られた樹脂円柱及び平版について上述の評価を行った。
Claims (15)
- ペンタエリスリトールと、メルカプトカルボン酸とを脱水反応させることを含み、
前記ペンタエリスリトールが、光路長50mmの石英セルにて測定される前記ペンタエリスリトールの5質量%水溶液の波長270nmにおける吸光度が0.1以上である、ペンタエリスリトールメルカプトカルボン酸エステルの製造方法。 - 前記メルカプトカルボン酸が、炭素数2~4である、請求項1に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記メルカプトカルボン酸が、メルカプト酢酸、又はメルカプトプロピオン酸である、請求項1に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記脱水縮合することが、スルホン酸化合物の存在下で脱水縮合させる、請求項1に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記スルホン酸化合物の量が、前記メルカプトカルボン酸と前記ペンタエリスリトールとの合計量に対して、0.1~10質量%である、請求項4に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記スルホン酸化合物が、アルキルスルホン酸である、請求項4に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記脱水反応させることが、減圧下で水を系外に排除しながら行われる、請求項1に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記脱水反応させることが、温度90~98℃で行われる、請求項1に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記ペンタエリスリトールメルカプトカルボン酸エステルのAPHAが、15以下である、請求項1に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。
- 前記脱水反応させることにより得られるペンタエリスリトールメルカプトカルボン酸エステルを洗浄すること、
を含む、請求項1に記載のペンタエリスリトールメルカプトカルボン酸エステルの製造方法。 - 請求項1~10のいずれか一項に記載の製造方法によって得られるペンタエリスリトールメルカプトカルボン酸エステルと、ポリイソ(チオ)シアナートとを含む、重合性組成物。
- 前記ポリイソ(チオ)シアナートが、ビス(イソシアナトメチル)-ビシクロ[2.2.1]ヘプタン、ビス(イソシアナトメチル)シクロヘキサン、ビス(イソシアナトメチル)ベンゼン、イソホロンジイソシアネート、ペンタメチレンジイソシアネート、及び、ヘキサメチレンジイソシアネートから選ばれる少なくとも1種を含む、請求項11に記載の重合性組成物。
- 請求項11に記載の重合性組成物の硬化物である樹脂。
- 請求項13に記載の樹脂を含む、光学材料。
- 請求項14に記載の樹脂を含む、眼鏡レンズ。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023553322A JPWO2023190876A1 (ja) | 2022-03-30 | 2023-03-30 | |
| CN202380030630.0A CN118946545A (zh) | 2022-03-30 | 2023-03-30 | 季戊四醇巯基羧酸酯的制造方法、聚合性组合物、树脂、光学材料、以及眼镜镜片 |
| US18/845,221 US20250179014A1 (en) | 2022-03-30 | 2023-03-30 | Method of producing pentaerythritol mercaptocarboxylate, polymerizable composition, resin, optical material, and spectacle lens |
| EP23780884.5A EP4506336A4 (en) | 2022-03-30 | 2023-03-30 | PROCESS FOR THE PRODUCTION OF PENTAERYTHRITOL MERCAPTOCARBOXYLIC ESTER, POLYMERIZABLE COMPOSITION, RESIN, OPTICAL MATERIAL AND SPECTACULAR LENSES |
| KR1020247030197A KR20240149934A (ko) | 2022-03-30 | 2023-03-30 | 펜타에리트리톨메르캅토카르복실산에스테르의 제조 방법, 중합성 조성물, 수지, 광학 재료 및 안경 렌즈 |
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| JP2022056070 | 2022-03-30 | ||
| JP2022-056070 | 2022-03-30 |
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|---|---|
| WO2023190876A1 true WO2023190876A1 (ja) | 2023-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/013189 Ceased WO2023190876A1 (ja) | 2022-03-30 | 2023-03-30 | ペンタエリスリトールメルカプトカルボン酸エステルの製造方法、重合性組成物、樹脂、光学材料、及び眼鏡レンズ |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250179014A1 (ja) |
| EP (1) | EP4506336A4 (ja) |
| JP (1) | JPWO2023190876A1 (ja) |
| KR (1) | KR20240149934A (ja) |
| CN (1) | CN118946545A (ja) |
| WO (1) | WO2023190876A1 (ja) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5711959A (en) * | 1980-06-24 | 1982-01-21 | Asahi Denka Kogyo Kk | Preparation of polyhydric alcohol ester with mercaptocarboxylic acid |
| JPH1180117A (ja) * | 1997-09-04 | 1999-03-26 | Asahi Denka Kogyo Kk | メルカプトカルボン酸エステルの製造方法 |
| JP2004002820A (ja) | 2002-04-19 | 2004-01-08 | Mitsui Chemicals Inc | チオウレタン系光学材料 |
| WO2007052329A1 (ja) * | 2005-10-31 | 2007-05-10 | Mitsui Chemicals, Inc. | ペンタエリスリトールメルカプトカルボン酸エステルの製造方法、それにより得られたペンタエリスリトールメルカプトカルボン酸エステル、およびその用途 |
| JP2011126822A (ja) * | 2009-12-18 | 2011-06-30 | Showa Denko Kk | メルカプトカルボン酸多価アルコールエステルの製造方法 |
| WO2016208707A1 (ja) * | 2015-06-24 | 2016-12-29 | 三井化学株式会社 | ペンタエリスリトールメルカプトカルボン酸エステルの製造方法、重合性組成物、樹脂、光学材料およびレンズ |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11106373A (ja) * | 1997-09-30 | 1999-04-20 | Asahi Denka Kogyo Kk | メルカプトカルボン酸エステルの製造方法 |
| JP2011084479A (ja) * | 2009-10-13 | 2011-04-28 | Showa Denko Kk | メルカプトカルボン酸多価アルコールエステルの製造方法 |
| JP6446317B2 (ja) | 2015-04-24 | 2018-12-26 | 日立オートモティブシステムズ株式会社 | 車載制御装置 |
| KR20160150248A (ko) * | 2015-06-19 | 2016-12-29 | 주식회사 케이오씨솔루션 | 3-메르캅토프로피온산의 제조방법과 이를 이용한 메르캅토기를 갖는 카르본산에스테르화합물 및 티오우레탄계 광학재료의 제조방법 |
| JP6691990B1 (ja) * | 2019-04-26 | 2020-05-13 | 三井化学株式会社 | 光学材料用チオール含有組成物、光学材料用重合性組成物 |
| CN112225683B (zh) * | 2020-10-27 | 2021-07-27 | 山东益丰生化环保股份有限公司 | 一种季戊四醇四巯基羧酸酯的制备方法及其应用 |
-
2023
- 2023-03-30 JP JP2023553322A patent/JPWO2023190876A1/ja active Pending
- 2023-03-30 KR KR1020247030197A patent/KR20240149934A/ko active Pending
- 2023-03-30 US US18/845,221 patent/US20250179014A1/en active Pending
- 2023-03-30 CN CN202380030630.0A patent/CN118946545A/zh active Pending
- 2023-03-30 EP EP23780884.5A patent/EP4506336A4/en active Pending
- 2023-03-30 WO PCT/JP2023/013189 patent/WO2023190876A1/ja not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5711959A (en) * | 1980-06-24 | 1982-01-21 | Asahi Denka Kogyo Kk | Preparation of polyhydric alcohol ester with mercaptocarboxylic acid |
| JPH1180117A (ja) * | 1997-09-04 | 1999-03-26 | Asahi Denka Kogyo Kk | メルカプトカルボン酸エステルの製造方法 |
| JP2004002820A (ja) | 2002-04-19 | 2004-01-08 | Mitsui Chemicals Inc | チオウレタン系光学材料 |
| WO2007052329A1 (ja) * | 2005-10-31 | 2007-05-10 | Mitsui Chemicals, Inc. | ペンタエリスリトールメルカプトカルボン酸エステルの製造方法、それにより得られたペンタエリスリトールメルカプトカルボン酸エステル、およびその用途 |
| JP2011126822A (ja) * | 2009-12-18 | 2011-06-30 | Showa Denko Kk | メルカプトカルボン酸多価アルコールエステルの製造方法 |
| WO2016208707A1 (ja) * | 2015-06-24 | 2016-12-29 | 三井化学株式会社 | ペンタエリスリトールメルカプトカルボン酸エステルの製造方法、重合性組成物、樹脂、光学材料およびレンズ |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4506336A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2023190876A1 (ja) | 2023-10-05 |
| EP4506336A4 (en) | 2026-03-11 |
| EP4506336A1 (en) | 2025-02-12 |
| CN118946545A (zh) | 2024-11-12 |
| US20250179014A1 (en) | 2025-06-05 |
| KR20240149934A (ko) | 2024-10-15 |
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