WO2014203812A1 - 光学材料用組成物 - Google Patents
光学材料用組成物 Download PDFInfo
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- WO2014203812A1 WO2014203812A1 PCT/JP2014/065710 JP2014065710W WO2014203812A1 WO 2014203812 A1 WO2014203812 A1 WO 2014203812A1 JP 2014065710 W JP2014065710 W JP 2014065710W WO 2014203812 A1 WO2014203812 A1 WO 2014203812A1
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- compound
- mass
- diisocyanate
- optical material
- polythiol
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Classifications
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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
- C08G18/3876—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing mercapto groups
-
- 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
- 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
- C07C323/10—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 singly-bound oxygen atoms bound to the same carbon skeleton
- C07C323/11—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 singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
- C07C323/12—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 singly-bound oxygen atoms 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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/52—Polythioethers
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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
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7628—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring containing at least one isocyanate or isothiocyanate group linked to the aromatic ring by means of an aliphatic group
- C08G18/7642—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring containing at least one isocyanate or isothiocyanate group linked to the aromatic ring by means of an aliphatic group containing at least two isocyanate or isothiocyanate groups linked to the aromatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate groups, e.g. xylylene diisocyanate or homologues substituted on the aromatic ring
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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
- G02B1/041—Lenses
Definitions
- the present invention relates to a composition for optical materials comprising a specific polythiol compound and a polyisocyanate compound, and further relates to an optical material comprising a thiourethane resin obtained by polymerizing the composition for optical materials.
- plastic materials have been widely used in various optical materials, particularly eyeglass lenses, because they are light and tough and easy to dye.
- the main performance required for optical materials, especially spectacle lenses, is low specific gravity, high transparency and low yellowness, high refractive index and high Abbe number as optical properties, etc.
- thiourethane resin for optical lenses and it Regarding the plastic lens thus formed, many applications have been filed, and a lens having a high refractive index, no coloring, and high transparency has been proposed.
- the thiourethane resin high-number lens may cause striae and cause a decrease in yield, suggesting the type of polymerization catalyst, addition method, and chemically unstable isocyanate stabilizers. Proposals have been made (Patent Documents 1 to 3).
- improvement in the striae of thiourethane resin is not always sufficient, and further improvement in yield is required.
- An object of the present invention is to provide a composition for an optical material containing a polythiol compound and a polyisocyanate compound, and an optical material obtained by polymerizing and curing the composition, which can improve yield reduction due to poor striae.
- the present inventor has found that the cause of striae is caused by convection in the initial casting stage with low viscosity, and is more reactive with isocyanate than thiol group. It has been found that by using a polythiol compound containing a compound having an excellent hydroxy group, the viscosity increase rate at the initial casting is increased, and the striae due to convection is suppressed. That is, the said subject can be solved by the following this invention.
- composition for optical materials comprising a polythiol containing the following (a) compound as a main component and 0.5 to 10% by mass of the following (b) compound and (c) a polyisocyanate compound.
- Compound a compound having a structure represented by the following formula (1)
- Compound a compound having a structure represented by the following formula (2) ⁇ 3>
- ⁇ 5> A lens containing the optical material according to ⁇ 4>.
- the present invention makes it possible to produce an optical material made of a thiourethane resin excellent in balance of physical properties without optical distortion at a high yield rate, and to improve the productivity of the optical material.
- polythiol containing the compound (a) as a main component and 0.5 to 10% by mass of the compound (b) is used.
- a preferred ratio of the compound (b) in the polythiol is 0.5 to 7% by mass, more preferably 0.5 to 5% by mass, and particularly preferably 0.8 to 5% by mass. If the proportion of the compound (b) in the polythiol is too small, the striae improving effect is not exhibited, and if it is too large, the resin physical properties such as the refractive index and heat resistance may be deteriorated.
- the proportion of the compound (a) in the polythiol is 70 to 90% by mass, preferably 73 to 86% by mass, more preferably 76 to 83% by mass.
- the compound (c) used in the present invention is not particularly limited as long as it has at least two isocyanates in one molecule, and specific examples thereof include diethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, trimethyl.
- isophorone diisocyanate isophorone diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, m-xylylene diisocyanate, p-xylylene diisocyanate, m-tetramethylxylylene diisocyanate, p-tetramethylxylylene diisocyanate.
- 1,3-bis (isocyanatomethyl) cyclohexane, 1,4-bis (isocyanatomethyl) cyclohexane, bis (isocyanatomethyl) norbornene, and 2,5-diisocyanatomethyl-1,4-dithiane One or more kinds of compounds, among which preferred compounds are isophorone diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate Hexamethylene diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, m-xylylene diisocyanate, and more preferred compounds are isophorone diisocyanate, m-xylylene diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, The most preferred compound is m-xylylene diisocyanate.
- the compound (c) used in the present invention is not limited thereto, and these may be used alone or in combination of two or more.
- a polythiol a mixture in which structural isomers, oligomers, and low molecular weight are mixed
- a polythiol a mixture in which structural isomers, oligomers, and low molecular weight are mixed
- a polythiol a mixture in which structural isomers, oligomers and low molecular weight are mixed
- the compound with a polymerization catalyst and additives as required.
- the total proportion of the polythiol (a) containing the compound as the main component, the polythiol (b) containing the compound as the main component and the (c) compound is usually 80% by mass or more, preferably 90% by mass. % Or more, more preferably 95% by mass or more.
- the defoaming treatment of the optical material composition under suitable conditions in advance before polymerization and curing is due to the effect of the low-boiling components such as carbon dioxide generated by the reaction between moisture contained in the composition and isocyanate groups. This is preferable from the viewpoint of preventing defects such as deterioration of transparency.
- the degree of vacuum is 0.01 to 50 Torr, preferably 0.01 to 30 Torr, more preferably 0.1 to 10 Torr, and still more preferably 0.1 to 5 Torr.
- the casting solution thus obtained can be purified by filtering impurities and the like immediately before polymerization and curing. It is desirable to further refine the quality of the optical material of the present invention by purifying the optical material composition through a filter to filter impurities and the like.
- the pore size of the filter used here is about 0.05 to 10 ⁇ m, and generally 0.1 to 1.0 ⁇ m is used.
- a filter material PTFE, PET, PP, or the like is preferably used.
- the polymerization temperature and time vary depending on the type of monomer and additives, but are -10 ° C to 160 ° C, usually -10 ° C to 140 ° C.
- the polymerization can be carried out by holding at a predetermined polymerization temperature for a predetermined time, raising the temperature from 0.1 ° C. to 100 ° C./h, lowering the temperature from 0.1 ° C. to 100 ° C./h, and combinations thereof.
- the optical material of the present invention preferably has a heat resistance of 82 ° C. or higher, more preferably 85 ° C. or higher. Further, the striae occurrence rate of the optical material is preferably 15% or less, more preferably 10% or less.
- V-Viscosity of casting liquid V-type viscometer (manufactured by Toki Sangyo Co., Ltd., TV10M type) was used to measure the viscosity at 20 ° C.
- ⁇ Striae incidence rate of optical material made of thiourethane resin A mercury lamp light source is transmitted through the 100 sheets of 75 mm diameter, -15D thiourethane resin lenses, and the transmitted light is projected onto a white plate, resulting in striped light and dark The rate of striae was evaluated by the presence or absence of the difference.
- -Refractive index of optical material made of thiourethane resin The refractive index of the optical material was measured using a digital precision refractometer (manufactured by Shimadzu Corporation, KPR-200) at the e-line at 25 ° C.
- -Heat resistance (Tg) of optical materials made of thiourethane resin Cut the sample to 3mm thickness, give 10g weight to 0.5mm ⁇ pin, raise the temperature from 30 ° C to 2.5 ° C / min, perform TMA measurement (Seiko Instruments, TMA / SS6100), softening point was measured.
- Synthesis example 1 In a 2 L four-necked reaction flask equipped with a stirrer, reflux condenser, nitrogen gas purge pipe, and thermometer, 76.0 parts by mass of water and 90.0 parts by mass (1.08 mol) of a 48% by mass aqueous sodium hydroxide solution were added. Prepared. After adding 169 parts by mass of 2-mercaptoethanol (2.16 mol) at 30 ° C. over 30 minutes, 99.9 parts by mass of epichlorohydrin (1.08 mol) was added at the same temperature over 3 hours. It was added dropwise and aged for 1 hour.
- the toluene solution was subjected to acid washing and water washing, and toluene and a trace amount of water were removed under heating and reduced pressure. Thereafter, filtration was performed to obtain 270.2 parts by mass of polythiol (including a mixture in which about 10% of structural isomers, several% of oligomers and low molecular weight components were mixed) containing the compound as a main component.
- Synthesis example 2 In a 2 L four-necked reaction flask equipped with a stirrer, reflux condenser, nitrogen gas purge pipe, and thermometer, 76.0 parts by mass of water and 90.0 parts by mass (1.08 mol) of a 48% by mass aqueous sodium hydroxide solution were added. Prepared. After adding 169 parts by mass of 2-mercaptoethanol (2.16 mol) at 5 ° C. over 10 minutes, 99.9 parts by mass of epichlorohydrin (1.08 mol) was added at the same temperature over 1 hour. The solution was added dropwise and the temperature was raised to 30 ° C.
- the toluene solution was subjected to acid washing and water washing, and toluene and a trace amount of water were removed under heating and reduced pressure. Thereafter, filtration was performed to obtain 259.5 parts by mass of polythiol containing the compound (b) as a main component (including a mixture containing about 20% of the compound (a), several% of oligomers and low molecular weight components).
- Reaction rate comparison 48 parts by mass (0.184 mol) of polythiol based on the compound (a) synthesized in Synthesis Example 1, 52 parts by mass of m-xylylene diisocyanate (0.276 mol), and di-n-butyltin dichloride 0.015 part by mass was mixed and dissolved at 20 ° C.
- the viscosity at this time was 10 mPa ⁇ s.
- the compound (a) and the compound (b) are polyisocyanates specified in JP-A-7-104101. It was confirmed that the relationship between the two kinds of polythiol compounds with different reaction rates with the compound was not satisfied.
- the polythiol mainly composed of the compound (a) synthesized in Synthesis Example 1 is mixed with the polythiol mainly composed of the compound (b) synthesized in Synthesis Example 2, and each concentration A polythiol containing the compound (b) was prepared.
- Example 1 Mix and dissolve 52 parts by mass of m-xylylene diisocyanate, 0.015 parts by mass of di-n-butyltin dichloride, 0.1 parts by mass of Zepan UN made by Stepan and 0.05 parts by mass of Biosorb 583 made by Kyodo Pharmaceutical. It was. At 15 ° C., 48 parts by mass of polythiol containing 75% by mass of the compound (a) and 6.9% by mass of the compound (b) was added and mixed to obtain a mixed homogeneous liquid. Defoaming was performed for 30 minutes at 600 Pa of this mixed homogeneous liquid.
- the mixture was filtered through a 1 ⁇ m PTFE filter, and then poured into a ⁇ 15D mold composed of various glass molds and tapes.
- the mold was put into an oven, gradually heated from 10 ° C. to 120 ° C., and polymerized in 20 hours. After completion of the polymerization, the mold was removed from the oven and released to obtain a resin.
- the obtained resin was further annealed at 130 ° C. for 2 hours to obtain an optical material (lens) made of thiourethane resin.
- the molar ratio of NCO groups to the total amount of SH and OH groups in the raw material (NCO / (SH + OH)), the viscosity after storage of the casting solution at 15 ° C. for 7 hours, and the evaluation results of the optical material made of thiourethane resin are It was as shown in Table 1.
- Example 2 to 4 and Comparative Examples 1 to 4 instead of the polythiol used in Example 1, an optical material made of a thiourethane resin was prepared in the same manner as in Example 1 except that polythiol containing the compound (b) at each concentration was used.
- Table 1 shows the molar ratio of NCO groups to the total amount of SH and OH groups in the raw material (NCO / (SH + OH)), the viscosity of the casting solution after 7 hours, and the evaluation results of the optical material made of thiourethane resin. Met.
- an optical material made of a polyurethane resin that suppresses striae and has an excellent balance of physical properties is provided. I understood that I could do it.
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Abstract
Description
しかしながら、チオウレタン樹脂の高度数レンズでは脈理が発生することがあり歩留まりの低下の原因となっており、重合触媒の種類や添加方法の提案や化学的に不安定であるイソシアネートの安定剤の提案などがなされている(特許文献1~3)。しかしながら、チオウレタン樹脂の脈理の改善は必ずしも十分とは言えないものであり、さらなる歩留まりの向上が求められている。
即ち、上記課題は、以下の本発明によって解決することができる。
<1> 下記(a)化合物を主成分とし、下記(b)化合物を0.5~10質量%含むポリチオールである。
(a)化合物:下記(1)式で表される構造を有する化合物
(a)化合物:下記(1)式で表される構造を有する化合物
<4> 上記<2>または<3>記載の光学材料用組成物を重合硬化して得られる光学材料である。
<5> 上記<4>記載の光学材料を含有するレンズである。
ポリチオール中の(a)化合物の割合は70~90質量%であり、好ましくは73~86質量%であり、より好ましくは76~83質量%である。
本発明で使用する(c)化合物の使用割合(モル比)は、特に限定されないが通常は、SH基とOH基の合計量に対するNCO基のモル比:NCO/(SH+OH)=0.7~1.5の範囲内、好ましくは0.7~1.3の範囲内、さらに好ましくは0.8~1.2の範囲内である。
・ポリチオール中の(a)化合物および(b)化合物の定量
DB-5MS(アジレント・テクノロジー株式会社)を装着した、キャピラリーガスクロマトグラフ(島津製作所製、GC2010、検出器:水素炎イオン化検出器(FID))を用いて、絶対検量線法により定量を行った。
・注型液の粘度
B型粘度計(東機産業製、TV10M型)を使用し、20℃での粘度を測定した。
・チオウレタン樹脂からなる光学材料の脈理発生率
水銀灯光源を、作製した100枚の直径75mm、-15Dのチオウレタン樹脂製レンズに透過させ、透過光を白色板に投影し、縞状の明暗差の有無で脈理発生率を評価した。
・チオウレタン樹脂からなる光学材料の屈折率
光学材料の屈折率はデジタル精密屈折率計(株式会社島津製作所製、KPR-200)を用い、25℃でのe線での屈折率を測定した。
・チオウレタン樹脂からなる光学材料の耐熱性(Tg)
サンプルを厚さ3mmに切り出し、0.5mmφのピンに10gの加重を与え、30℃から2.5℃/分で昇温してTMA測定(セイコーインスツルメンツ製、TMA/SS6100)を行い、軟化点を測定した。
攪拌機、還流冷却管、窒素ガスパージ管、および温度計を取り付けた2L4つ口反応フラスコ内に、水76.0質量部と48質量%の水酸化ナトリウム水溶液90.0質量部(1.08mol)を仕込んだ。30℃にて2-メルカプトエタノール169質量部(2.16mol)を30分かけて滴下により添加した後、エピクロロヒドリン99.9質量部(1.08mol)を同温度にて3時間かけて滴下添加し1時間熟成を行った。次に、36質量%塩酸水450.1質量部(4.32mol)、チオ尿素304.5質量部(4.00mol)を加え、8時間110℃で還流を行ってチウロニウム塩化を行った。50℃に冷却した後、トルエン450.0質量部、28質量%のアンモニア水溶液298質量部(5.21mol)を加え、加水分解を行い、(a)化合物を主成分とするポリチオールのトルエン溶液を得た。該トルエン溶液を、酸洗浄および水洗浄を行い、加熱減圧下でトルエンおよび微量の水分を除去した。その後、濾過して(a)化合物を主成分とする(10%程度の構造異性体や数%のオリゴマーや低分子量成分が混じった混合物を含む)ポリチオール270.2質量部を得た。
攪拌機、還流冷却管、窒素ガスパージ管、および温度計を取り付けた2L4つ口反応フラスコ内に、水76.0質量部と48質量%の水酸化ナトリウム水溶液90.0質量部(1.08mol)を仕込んだ。5℃にて2-メルカプトエタノール169質量部(2.16mol)を10分かけて滴下により添加した後、エピクロロヒドリン99.9質量部(1.08mol)を同温度にて1時間かけて滴下添加し30℃まで温度を上げた。次に、36質量%塩酸水450.1質量部(4.32mol)、チオ尿素206質量部(2.70mol)を加え、30分110℃で還流を行ってチウロニウム塩化を行った。30℃に冷却した後、トルエン450.0質量部、28質量%のアンモニア水溶液300質量部(5.25mol)を加え、50℃にて加水分解を行い、(b)化合物を主成分とするポリチオールのトルエン溶液を得た。該トルエン溶液を、酸洗浄および水洗浄を行い、加熱減圧下でトルエンおよび微量の水分を除去した。その後、濾過して(b)化合物を主成分とする(20%程度の(a)化合物や数%のオリゴマーや低分子量成分が混じった混合物を含む)ポリチオール259.5質量部を得た。
合成例1で合成した(a)化合物を主成分とするポリチオール48質量部(0.184mol)、m-キシリレンジイソシアナート52質量部(0.276mol)、およびジ-n-ブチルスズジクロライド0.015質量部を20℃にて混合溶解させた。この時の粘度は10mPa・sであった。さらに20℃で保持し、2時間後の粘度は19mPa・sであり、混合後2時間での粘度差は9mPa・sであった。
合成例2で合成した(b)化合物を主成分とするポリチオール46.4質量部(0.190mol)、m-キシリレンジイソシアナート53.6質量部(0.285mol)、およびジ-n-ブチルスズジクロライド0.015質量部を20℃にて混合溶解させた。この時の粘度は10mPa・sであった。さらに20℃で保持し、2時間後の粘度は29mPa・sであり、混合後2時間での粘度差は19mPa・sであった。
(a)化合物、(b)化合物の2時間後の粘度変化の差は10mPa・sであったため、(a)化合物と(b)化合物は特開平7-104101中で規定されている、ポリイソシアネート化合物との反応速度が異なる2種のポリチオール化合物の関係ではないことが確認された。
m-キシリレンジイソシアナート52質量部、ジ-n-ブチルスズジクロライド0.015質量部、Stepan社製ゼレックUNを0.1質量部、共同薬品社製バイオソーブ583を0.05質量部を混合溶解させた。15℃にて(a)化合物を75質量%及び(b)化合物を6.9質量%含むポリチオール48質量部を添加混合し、混合均一液とした。この混合均一液600Paにて30分脱泡を行った。その後、1μmPTFEフィルターにて濾過を行った後、各種ガラスモールドとテープからなる-15D用のモールド型へ注入した。このモールド型をオーブンへ投入し、10℃から120℃まで徐々に加温し、20時間で重合した。重合終了後、オーブンからモールド型を取り出し、離型して樹脂を得た。得られた樹脂をさらに130℃で2時間アニールを行いチオウレタン樹脂からなる光学材料(レンズ)を得た。原料のSH基とOH基の合計量に対するNCO基のモル比(NCO/(SH+OH))、注型液を15℃で7時間保管後の粘度、およびチオウレタン樹脂からなる光学材料の評価結果は表1に示す通りであった。
実施例1で用いたポリチオールに代えて、各濃度の(b)化合物を含むポリチオールを用いた他は、実施例1と同様にチオウレタン樹脂からなる光学材料を作製した。原料のSH基とOH基の合計量に対するNCO基のモル比(NCO/(SH+OH))、7時間後の注型液の粘度とチオウレタン樹脂からなる光学材料の評価結果は表1に示す通りであった。
Claims (5)
- SH基とOH基の合計量に対するNCO基のモル比(NCO/(SH+OH))が0.7~1.5である請求項2記載の光学材料用組成物。
- 請求項2または3記載の光学材料用組成物を重合硬化して得られる光学材料。
- 請求項4記載の光学材料を含有するレンズ。
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KR101883814B1 (ko) * | 2016-08-31 | 2018-07-31 | 에스케이씨 주식회사 | 광학 재료용 방향족 폴리티올 화합물 |
TWI615415B (zh) * | 2016-09-13 | 2018-02-21 | 奇美實業股份有限公司 | 光學材料用樹脂組成物、光學材料用樹脂及其所形成的光學透鏡 |
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