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21. 发明专利

JPH08157735A PRODUCTION OF ORGANIC/INORGANIC COMPOSITE POLYMER 失效
公开(公告)号：JPH08157735A
公开(公告)日：1996-06-18
申请号：JP30342794
申请日：1994-12-07
申请人： HOYA CORP
发明人： OKUBO TAKESHI , TANJI HIROAKI
IPC分类号： C08L33/24 , C08F2/44 , C08K3/20 , C08L35/00 , C08L57/00 , C08L83/04 , C08L85/00 , C08L101/00 , C08L101/12
摘要： PURPOSE: To produce an organic/inorganic composite polymer improved in transparency by subjecting an organic/inorganic composite material containing a metal oxide obtained by performing the hydrolysis and subsequent dehydrative condensation of a metal alkoxide in the presence of an organic monomer and an organic monomer to a polymerization treatment. CONSTITUTION: An organic monomer (e.g. (meth)acrylamide) in an amount of 10 pts.wt. selected from monomers having amide bonds, imide bonds, urethane bonds or urea bonds and 10 -40 pts.wt. alkoxide of a metal selected from Si, Ti, Zr, etc., (e.g. silicon tetraoxide) are dissolved in a 1-4C alcohol solvent, a catalyst (e.g. 1×10 to 10 N aqueous ammonia solution) is added to the solution, and the resultant mixture is subjected to hydrolysis and dehydrative condensation at 25-150 deg.C. The alcohol, water and NH3 are distilled off to obtain an organic/inorganic composite material containing the metal oxide and the organic monomer. A mixture formed by adding a radical polymerization initiator to the composite material is poured into a mold and polymerizad by heating to a predetermined temperature to obtain an organic/inorganic composite polymer molding being small in the dependency of a coefficient of linear thermal expansion and a refractive index on temperature and having excellent transparency.

22. 发明专利

JPH06192250A POLYTHIOL COMPOUND 失效
公开(公告)号：JPH06192250A
公开(公告)日：1994-07-12
申请号：JP9212893
申请日：1993-03-25
申请人： HOYA CORP
发明人： OKUBO TAKESHI , GUEN CHIYOU , OKADA REISUKE
IPC分类号： G02B6/00 , C07D339/08 , C08G18/30 , C08G18/38 , C08G18/52 , C08G18/75 , C08G18/81 , C08G75/00 , C08G75/02 , C08G75/04 , G02B1/04 , G02B6/02 , G02B7/02 , G11B7/253
摘要： PURPOSE:To obtain a new compound having high refractive index and high Abbe number and useful as a raw material for optical materials. CONSTITUTION:The compound of formula I [X is (CH2CH2S)n2-H; n1 is 1-5; n2 is 0-2], e.g. 2,5-bis(2-mercaptoethylthiomethyl)-1,4-dithiane. The compound of formula I can be produced by reacting diallyl disulfide of formula II with bromine, cyclizing and dimerizing the product, reacting the obtained brominated compound with thiourea to obtain an isothiuronium salt of formula III, hydrolyzing the compound of formula III and finally acidifying the reactional system with hydrochloric acid. The optical material derived from the compound of formula I exhibits high refractive index and low dispersion and has excellent heat-resistance, weather resistance and transparency and, accordingly, it is useful as optical products such as lens and prism (e.g. glasses and camera lens), optical fiber, substrate for recording medium for optical disk, magnetic disk, etc., color filter, infrared absorption filter, etc.

23. 发明专利

JPH0665193A POLYISOCYANATE COMPOUND AND OPTICAL MATERIAL AND OPTICAL PRODUCTION PRODUCED THEREFROM 失效
公开(公告)号：JPH0665193A
公开(公告)日：1994-03-08
申请号：JP23525292
申请日：1992-08-11
申请人： HOYA CORP
发明人： KITAHARA YOSHITAKA , OKUBO TAKESHI , OKADA REISUKE
IPC分类号： C08G18/65 , C07C323/25 , G02B1/04
摘要： PURPOSE:To provide a new compound having a specific structure containing a thioether group, giving a polymer having high refractive index, low dispersion and excellent heat-resistance and useful e.g. as a production raw material for optical product such as lens, prism and optical fiber. CONSTITUTION:The objective polyisocyanate compound expressed by formula [R1 is H, methyl or ethyl; R2 is alkanetriyl, etc., having one or more CH2 substituted with S; R3 is alkylene (having CH2 substituted with S)] is produced by dissolving diethyl glutaconate, etc., and methyl-3-mercaptopropionate, etc., in tetrahydrofuran, reacting the components by adding tetrabutyl ammonium fluoride, etc., as a catalyst, adding a methanol solution of hydrazine monohydrate to the obtained tricarboxylic acid, reacting the components under heating to obtain an acid hydrazide, adding 1M hydrochloric acid and chloroform to the product, adding sodium nitrite to the mixture under vigorous agitation to effect the reaction, separating the chloroform phase containing an acid azide and subjecting to decomposition rearrangement reaction under heating.

24. 发明专利

JPH03236386A POLYTHIOL COMPOUND, OPTICAL MATERIAL AND OPTICAL PRODUCT OBTAINED BY USING SAME COMPOUND 失效
公开(公告)号：JPH03236386A
公开(公告)日：1991-10-22
申请号：JP28108990
申请日：1990-10-19
申请人： HOYA CORP
发明人： OKUBO TAKESHI , GUEN CHIYOU , OKADA REISUKE
IPC分类号： G02B6/00 , C07D339/08 , C08G18/30 , C08G18/38 , C08G18/52 , C08G18/75 , C08G18/81 , C08G75/00 , C08G75/02 , C08G75/04 , G02B1/04 , G02B6/02 , G02B7/02 , G11B7/253
摘要： NEW MATERIAL:A compound shown by formula I [X is-(CH2CH2S)n2-H; Y is H or-(CH2)n3-S-X; n1 is 1-5 ; n2 is 0-2 ; n3 is 1-5]. EXAMPLE:2, 5-Dimercaptomethyl-1, 4-dithian. USE:An optical material having high refractive index and large Abbe's number. Providing a polymer having excellent heat resistance, weather resistance and transparency, which is useful as a lens of eyeglasses, accessory, etc. PREPARATION:For example, diallyl disulfide shown by formula II is reacted with bromine to give a cyclic dimerized bromide shown by formula III. This compound is reacted with thiourea to form isothiuronium salt shown by formula IV. This compound is hydrolyzed with an aqueous solution of sodium hydroxide and made acidic with hydrochloric acid to give a compound shown by formula V wherein group X is H (n2=0), Y is H and n1=1.

25. 发明专利

JPS6313721A MANUFACTURE OF CONTACT LENS 失效
公开(公告)号：JPS6313721A
公开(公告)日：1988-01-21
申请号：JP15786486
申请日：1986-07-07
申请人： HOYA CORP
发明人： IZUMITANI TETSUO , OKUBO TAKESHI , SAWAMOTO TAKEYUKI , TARUMI JIRO , KOMIYA SHIGEO , ONOZUKA SHIGEHARU , FUTAMURA HIDEYUKI
IPC分类号： B29C39/44 , B29L11/00 , C08F2/02 , C08F220/00 , C08F220/12 , C08F220/28 , C08F220/56 , C08F226/10 , G02C7/04
摘要： PURPOSE:To manufacture a hard contact lens of favorable optical performance, by a method wherein a monomer or a monomer mixture is reacted by heating the same under agitation in the presence of a polymerization inhibitor and a crosslinking agent, reaction is interrupted by cooling a reactive solution at a point of time when viscosity of the reactive solution is raised to a specific range and polymerization and curing are effected to a prepolymer by putting the prepolymer into a mold. CONSTITUTION:A polymerizing stock solution obtained by adding an appropriate quantity of a crosslinking agent and polymerization inhibitor to a monomer or a mixed solution of monomers is provided within a reaction vessel. The provided stock solution is heated at a fixed temperature while the same is being agitated. The polymerization reaction is suspended by suspending heating and agitation, then cooling immediately when the viscosity of the polymerization reaction solution has arrived at a desired viscosity to obtain a desired prepolymer. It is necessary that the viscosity falls within a range of 10-2,000cps. It is preferable to prepare a prepolymer of a viscosity as high as possible within a predetermined range of the viscosity.

26. 发明专利

JP2002128756A ASYMMETRIC DISULFIDE COMPOUND AND METHOD FOR PRODUCING THE SAME 失效
公开(公告)号：JP2002128756A
公开(公告)日：2002-05-09
申请号：JP2000327112
申请日：2000-10-26
申请人： HOYA CORP
发明人： OKUBO TAKESHI , KYO TAKESHI
IPC分类号： C07D331/02 , C07B61/00 , C07C319/24 , C07C321/12
摘要： PROBLEM TO BE SOLVED: To obtain an asymmetric disulfide compound capable of producing an optical material having a high refractive index and a high Abbe's number, and heat and weather resistances, transparency, etc., and to provide a method efficiently producing the same. SOLUTION: This asymmetric disulfide compound is characterized in that the compound is obtained by reacting (A) an O-alkyl-S-substituted sulfenyl thiocarbonate with (B) a thiol. The method for producing the asymmetric disulfide compound is characterized by reacting an alkoxycarbonylsulfenyl halide with the thiol and reacting the resultant O-alkyl-S-substituted sulfenyl thiocarbonate with a thiol different from the thiol used in the previous reaction.

27. 发明专利

JP2001296402A OPTICAL GOODS 失效
公开(公告)号：JP2001296402A
公开(公告)日：2001-10-26
申请号：JP2000112531
申请日：2000-04-13
申请人： HOYA CORP
发明人： OKUBO TAKESHI , KYO TAKESHI
IPC分类号： G02B1/04 , C07F7/08 , C07F7/22 , C07F7/28 , C07F7/30 , C08G75/08 , C08L33/14 , C08L63/00 , C08L81/00
摘要： PROBLEM TO BE SOLVED: To provide optical material products having a high refractive index and a high Abbe number and excellent in heat weather resistances, transparency, etc. SOLUTION: The optical material products comprise a polymer obtained using an organometallic compound of formula (1) (where M is Si, Ge, Sn or Ti; (x) is an integer of 1-4; and (y) is 1 or 2) having at least episulfide groups as polymerizable functional groups as an essential monomer component. The organometallic compound is, e.g. tetrakis(2:3-epithiopropylthio)germane.

28. 发明专利

JPH11279256A Optical material and optical product obtained by using polyisocyanate compound 有权
标题翻译：使用聚异氰酸酯化合物获得的光学材料和光学产品
公开(公告)号：JPH11279256A
公开(公告)日：1999-10-12
申请号：JP223999
申请日：1999-01-07
申请人： Hoya Corp , ホーヤ株式会社
发明人： KITAHARA YOSHITAKA , OKUBO TAKESHI , OKADA REISUKE
IPC分类号： C08G18/38 , C08G18/77 , G02B1/04
摘要： PROBLEM TO BE SOLVED: To obtain an optical material and an optical product by using such a polyisocyanate compound as to afford a polymer with high refractive index, low dispersion and also high heat resistance.
SOLUTION: The optical material and optical product are characteristic in being obtained by polymerization between a polyisocyanate compound of the formula (R
1 is H, methyl or ethyl; R
2 is a sulfur-substituted alkanetriyl or alkanetetrayl; R
3 , is an alkylene), a compound bearing two or more hydroxyl groups in one molecule, and a compound bearing two or more mercapto groups in one molecule or a compound bearing one or more hydroxyl groups and one or more mercapto groups in one molecule.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：通过使用这样的多异氰酸酯化合物获得具有高折射率，低分散性和高耐热性的聚合物的光学材料和光学产品。解决方案：光学材料和光学产品的特征在于通式（R1为H，甲基或乙基; R2为硫取代的烷基三乙酰基或烷基乙基; R3为亚烷基）的多异氰酸酯化合物之间的聚合，化合物在一个分子中带有两个或更多个羟基，在一个分子中带有两个或更多个巯基的化合物或在一个分子中带有一个或多个羟基和一个或多个巯基的化合物。

29. 发明专利

JPH07118263A REACTIVE OLIGOMER 失效
公开(公告)号：JPH07118263A
公开(公告)日：1995-05-09
申请号：JP28438693
申请日：1993-10-19
申请人： HOYA CORP
发明人： OKUBO TAKESHI
IPC分类号： G02B1/04 , A61L27/00 , A61L27/18 , A61L27/50 , C07D339/08 , C08G18/38 , C08G18/52 , C08G75/02 , C08G75/04 , C08G75/045 , G02B6/00 , G02B6/02 , G02C7/02 , G02C7/04 , G11B7/24 , G11B7/253 , G11B7/2533
摘要： PURPOSE:To obtain a reactive oligomer derived from 2,5-dimercaptomethyl-1,4- dithian, providing a polymer having a high refractive index and Abbe's number and excellent heat resistance, useful as a raw material for lens, prism, optical fiber, etc. CONSTITUTION:2,5-Dimercaptomethyl-1,4-dithian of formula I is reacted with methyl sulfoxide as an oxidizing agent under stirring at 80 deg.C for two hours. Then the reaction mixture is cooled, mixed with the same amount of water as that of methyl sulfoxide and extracted with chloroform. The extracted solution is washed with water, dried with magnesium sulfate and chloroform is distilled away under reduced pressure to give the reactive oligomer of formula II ((n) is 2-20 integer). This oligomer provides a polymer having high refractive index and Abbe's number and excellent heat resistance, suitable for optical materials such as optical lens, prism, filter, optical fiber, optical disc substrate, etc.

30. 发明专利

JPH0718020A OPTICAL RESIN 失效
公开(公告)号：JPH0718020A
公开(公告)日：1995-01-20
申请号：JP16259093
申请日：1993-06-30
申请人： HOYA CORP
发明人： ISOBE HIKARI , KATO KAZUAKI , OKUBO TAKESHI
IPC分类号： C08F20/58 , C07D277/04 , C07D279/12 , C08F20/52 , G02B1/04 , G02B5/04 , G02B6/00 , G02C7/02 , G11B7/253
摘要： PURPOSE:To obtain an optical resin with a high refractive index and Abbe number by polymerizing a specific monomer. CONSTITUTION:An optical resin (hereinafter referred to as resin A) comprises a polymer produced by polymerizing a monomer of the formula (wherein X is H or methyl; and n is 1 or 2). An optical resin comprising a copolymer obtd. from the monomer and an unsatd. fatty acid ester has not only a high refractive index and Abbe number but also a lower water absorption capacity than resin A. An optical resin comprising a copolymer obtd. from the monomer and an N-substd. maleimide has not only a high refractive index and Abbe number but also a higher heat resistance than resin A.

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