JP2004115816A - New resin for optical material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin for optical material having improved oxidation resistance and obtained by polymerizing and curing a new sulfur-containing compound having episulphide structure. <P>SOLUTION: The optical material composition comprises (a) a compound having one or more structure of formula (1) in a molecule [in the formula, R<SP>1</SP>is a 1-2C hydrocarbon; R<SP>2</SP>, R<SP>3</SP>and R<SP>4</SP>are each a 1-10C hydrocarbon or H; X is S or O, wherein the number of S is an average of ≥50% based on the total of S and O composing a 3-membered ring] and (b) a compound having one or more SH in a molecule, wherein the ratio of the total molar number of SH in the (b) compound to the total molar number of episulphide and/or epoxy in the (a) compound is 0.001-0.5. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention is suitably used as a raw material for plastic lenses, prisms, optical fibers, information recording substrates, filters, and other optical materials, particularly, plastic lenses for eyeglasses.

BACKGROUND ART Plastic materials are lightweight and rich in toughness, and are easily used for dyeing. Therefore, plastic materials have recently been frequently used for various optical materials, particularly for spectacle lenses. The performance required for optical materials, particularly spectacle lenses, is a low refractive index, a high refractive index and a high Abbe number as optical performances, and high heat resistance and high strength as physical performances. The high refractive index enables the lens to be thinner, the high Abbe number reduces the chromatic aberration of the lens, and the high heat resistance and the high strength facilitate secondary processing and are important from the viewpoint of safety and the like.
A material having a high refractive index in the prior art is a thermosetting optical material having a thiourethane structure obtained by reacting a polythiol compound with a polyisocyanate compound (Japanese Patent Publication No. 4-58489, Japanese Patent Application Laid-Open No. 5-148340). And so on. Further, a technique for obtaining a lens by polymerizing an epoxy resin or an episulfide resin with a compound having two or more functionalities has been proposed in JP-A-1-98615, JP-A-3-81320, and International Publication WO8910575. However, it goes without saying that a higher refractive index is desirable. On the other hand, another important performance required for the optical material is that the chromatic aberration is small. Since the chromatic aberration becomes better as the Abbe number becomes higher, a material having a higher Abbe number is desired. That is, simultaneous realization of a high refractive index and a high Abbe number is also desired.
However, in general, the Abbe number tends to decrease with an increase in the refractive index, and in the case of a plastic material made from a compound of the prior art, the Abbe number is about 50 to 55 when the refractive index is 1.50 to 1.55. The limit is 40 for a refractive index of 1.60 and about 31 for a refractive index of 1.66. If the refractive index of 1.7 is forcibly realized, the Abbe number is about 30 or less, which can withstand practical use. Was not.
Furthermore, in the case of the prior art, particularly in the case of thiourethane materials, the molecular weight of the raw material sulfur compound becomes large in order to exhibit a high refractive index, so that the crosslink density is reduced. As the content increases, the rigidity of the molecules composing the raw material compound decreases, and as a result, hindrance such as a decrease in heat resistance occurs. In other words, in an optical material comprising an episulfide compound, a polythiol compound, and an isocyanate compound obtained by a conventional technique, there is a limit in increasing the refractive index, and further, since increasing the refractive index causes a decrease in the Abbe number, a sufficiently high refractive index is obtained. And the Abbe number could not be balanced.
In order to solve this problem, the present inventors have found a novel sulfur-containing compound having an episulfide structure that enables an optical material having a small thickness and a low chromatic aberration, and have previously filed a patent application (Japanese Patent Application No. Hei 10-26139). 8-2144631, Japanese Patent Application No. 8-5797). However, the optical material obtained by polymerizing and curing the sulfur-containing compound is not sufficiently satisfactory in oxidation resistance, and tends to be colored during long-term storage and in a step requiring heat treatment. Was.

The present invention has been made for the purpose of improving the oxidation resistance of a resin obtained by polymerizing and curing a novel sulfur-containing compound having an episulfide structure previously found by the present inventors.

The present inventor has conducted various studies on methods for overcoming the above-mentioned drawbacks,
(A) a compound having at least one structure represented by the formula (1) in one molecule,

（式中、Ｒ¹ は炭素数１〜１０の炭化水素、Ｒ² , Ｒ³ ,Ｒ⁴ はそれぞれ炭素数１〜１０の炭化水素基または水素を示す。ＸはＳまたはＯを示し、このＳの個数は三員環を構成するＳとＯの合計に対して平均で５０％以上である。）
（ｂ）ＳＨ基を１分子あたり１個以上有する化合物とからなり、
上記（ａ）化合物中のエピスルフィド基および／またはエポキシ基の総計のモル数に対する（ｂ）化合物中のＳＨ基の総計のモル数の比が０．００１〜０．５である樹脂用組成物を重合硬化して得られる樹脂が、優れた耐酸化性を有することを見いだし、本発明を完成するに至った。

(In the formula, R ¹ represents a hydrocarbon having 1 to 10 carbon atoms, R ² , R ³ , and R ⁴ each represent a hydrocarbon group or hydrogen having 1 to 10 carbon atoms. X represents S or O; Is 50% or more on average with respect to the sum of S and O constituting the three-membered ring.)
(B) a compound having one or more SH groups per molecule,
A resin composition wherein the ratio of the total number of moles of SH groups in the compound (b) to the total number of moles of episulfide groups and / or epoxy groups in the above (a) compound is 0.001 to 0.5. The inventors have found that a resin obtained by polymerization and curing has excellent oxidation resistance, and have completed the present invention.

In the present invention, the molar ratio of the total amount of SH groups in the compound (b) to the total amount of episulfide groups and / or epoxy groups in the compound (a) is usually 0.001 or more and 0.5 or less, preferably Is 0.001 or more and 0.3 or less, more preferably 0.001 or more and 0.2 or less, and most preferably 0.01 or more and less than 0.1. (A) When the molar ratio of the total of the SH groups in the compound to the total of the episulfide groups and / or the epoxy groups in the compound exceeds 0.5, the heat resistance of the optical material obtained by polymerization and curing. When it is less than 0.001, the high oxidation resistance, which is the object of the present invention, is not satisfied.
In order to express a high refractive index which is one of the gist of the present invention, R ^{1 in the} formula (1) is required.
Is preferably methylene and ethylene, and R ² , R ³ , R ^{4 in the} formula (1)
Is preferably hydrogen and a methyl group. More preferably, R ¹ is methylene and R ² , R ³ and R ⁴ are hydrogen. The number of S in the formulas (1) and (2) is preferably 90% or more on average, more preferably 95% or more on average, based on the sum of S and O constituting the three-membered ring. Most preferably it is substantially 100%.

By a cured resin optical material obtained by polymerizing and curing the composition of the present invention, a resin having a sufficiently high refractive index, which was difficult as long as the compound of the prior art was used as a raw material, and a resin having a good balance between the refractive index and the Abbe number It has become possible to impart high oxidation resistance to optical materials without impairing heat resistance.

Examples of the compound (a) of the present invention having one or more structures represented by the formula (1) in one molecule are shown below.
(I) Specific examples of the compound having one structure represented by the formula (1) in one molecule include bis (β-epithiopropyl) sulfide and at least one hydrogen of the episulfide group of the compound is methyl. And the like.
(II) As a compound having two or more structures represented by the formula (1) in one molecule,
(A) Organic compound having a chain aliphatic skeleton in which two or more structures represented by the formula (1) are bonded (B) Cyclic aliphatic skeleton in which two or more structures represented by the formula (1) are bonded (C) Organic compounds (A), (B) and (C) which are organic compounds having an aromatic skeleton in which two or more structures represented by the formula (1) are bonded to each other. Further, these compounds may further contain a bond such as sulfide, ether, sulfone, ketone, ester or the like in the molecule.

The organic compound having a chain aliphatic skeleton of (A) is classified into a straight chain and a branched chain, and any of them may be used. Particularly preferred is a straight chain compound represented by the following formula (2).

（式中、Ｒ⁵ 〜Ｒ¹⁰はそれぞれ炭素数１〜１０の炭化水素基または水素を示す。ＸはＳまたはＯを示し、このＳの個数は三員環を構成するＳとＯの合計に対して平均で５０％以上である。ｍは１〜６、ｎは０〜４を示す。）
　また、これらの好ましい具体的例示としては、ビス（β−エピチオプロピルチオ）メタン、１，２−ビス（β−エピチオプロピルチオ）エタン、１，３−ビス（β−エピチオプロピルチオ）プロパン、１，２−ビス（β−エピチオプロピルチオ）プロパン、１−（β−エピチオプロピルチオ）−２−（β−エピチオプロピルチオメチル）プロパン、１，４−ビス（β−エピチオプロピルチオ）ブタン、１，３−ビス（β−エピチオプロピルチオ）ブタン、１−（β−エピチオプロピルチオ）−３−（β−エピチオプロピルチオメチル）ブタン、１，５−ビス（β−エピチオプロピルチオ）ペンタン、１−（β−エピチオプロピルチオ）−４−（β−エピチオプロピルチオメチル）ペンタン、１，６−ビス（β−エピチオプロピルチオ）ヘキサン、１−（β−エピチオプロピルチオ）−５−（β−エピチオプロピルチオメチル）ヘキサン、１−（β−エピチオプロピルチオ）−２−〔（２−β−エピチオプロピルチオエチル）チオ〕エタン、１−（β−エピチオプロピルチオ）−２−［〔２−（２−β−エピチオプロピルチオエチル）チオエチル〕チオ］エタン等の鎖状有機化合物等を、また、テトラキス（β−エピチオプロピルチオメチル）メタン、１，１，１−トリス（β−エピチオプロピルチオメチル）プロパン、１，５−ビス（β−エピチオプロピルチオ）−２−（β−エピチオプロピルチオメチル）−３−チアペンタン、１，５−ビス（β−エピチオプロピルチオ）−２，４−ビス（β−エピチオプロピルチオメチル）−３−チアペンタン、１−（β−エピチオプロピルチオ）−２，２−ビス（β−エピチオプロピルチオメチル）−４−チアヘキサン、１，５，６−トリス（β−エピチオプロピルチオ）−４−（β−エピチオプロピルチオメチル）−３−チアヘキサン、１，８−ビス（β−エピチオプロピルチオ）−４−（β−エピチオプロピルチオメチル）−３，６−ジチアオクタン、１，８−ビス（β−エピチオプロピルチオ）−４，５ビス（β−エピチオプロピルチオメチル）−３，６−ジチアオクタン、１，８−ビス（β−エピチオプロピルチオ）−４，４−ビス（β−エピチオプロピルチオメチル）−３，６−ジチアオクタン、１，８−ビス（β−エピチオプロピルチオ）−２，４，５−トリス（β−エピチオプロピルチオメチル）−３，６−ジチアオクタン、１，８−ビス（β−エピチオプロピルチオ）−２，５−ビス（β−エピチオプロピルチオメチル）−３，６−ジチアオクタン、１，９−ビス（β−エピチオプロピルチオ）−５−（β−エピチオプロピルチオメチル）−５−〔（２−β−エピチオプロピルチオエチル）チオメチル〕−３，７−ジチアノナン、１，１０−ビス（β−エピチオプロピルチオ）−５，６−ビス〔（２−β−エピチオプロピルチオエチル）チオ〕−３，６，９−トリチアデカン、１，１１−ビス（β−エピチオプロピルチオ）−４，８−ビス（β−エピチオプロピルチオメチル）−３，６，９−トリチアウンデカン、１，１１−ビス（β−エピチオプロピルチオ）−５，７−ビス（β−エピチオプロピルチオメチル）−３，６，９−トリチアウンデカン、１，１１−ビス（β−エピチオプロピルチオ）−５，７−〔（２−β−エピチオプロピルチオエチル）チオメチル〕−３，６，９−トリチアウンデカン、１，１１−ビス（β−エピチオプロピルチオ）−４，７−ビス（β−エピチオプロピルチオメチル）−３，６，９−トリチアウンデカン等の分岐状有機化合物およびこれらの化合物のエピスルフィド基の水素の少なくとも１個がメチル基で置換された化合物等が挙げられる。

(Wherein, R ^{5 to} R ¹⁰ each represent a hydrocarbon group having 1 to 10 carbon atoms or hydrogen. X represents S or O, and the number of S is based on the sum of S and O constituting a three-membered ring. On the other hand, it is 50% or more on average. M indicates 1 to 6, and n indicates 0 to 4.)
Preferred specific examples thereof include bis (β-epithiopropylthio) methane, 1,2-bis (β-epithiopropylthio) ethane and 1,3-bis (β-epithiopropylthio). Propane, 1,2-bis (β-epithiopropylthio) propane, 1- (β-epithiopropylthio) -2- (β-epithiopropylthiomethyl) propane, 1,4-bis (β-epi Thiopropylthio) butane, 1,3-bis (β-epithiopropylthio) butane, 1- (β-epithiopropylthio) -3- (β-epithiopropylthiomethyl) butane, 1,5-bis (Β-epithiopropylthio) pentane, 1- (β-epithiopropylthio) -4- (β-epithiopropylthiomethyl) pentane, 1,6-bis (β-epithiopropylthio) hexane, − ( β-epithiopropylthio) -5- (β-epithiopropylthiomethyl) hexane, 1- (β-epithiopropylthio) -2-[(2-β-epithiopropylthioethyl) thio] ethane, A chain organic compound such as 1- (β-epithiopropylthio) -2-[[2- (2-β-epithiopropylthioethyl) thioethyl] thio] ethane and the like, tetrakis (β-epithiothio) Propylthiomethyl) methane, 1,1,1-tris (β-epithiopropylthiomethyl) propane, 1,5-bis (β-epithiopropylthio) -2- (β-epithiopropylthiomethyl)- 3-Thiapentane, 1,5-bis (β-epithiopropylthio) -2,4-bis (β-epithiopropylthiomethyl) -3-thiapentane, 1- (β-epithiopropylthio) -2, 2-bis β-epithiopropylthiomethyl) -4-thiahexane, 1,5,6-tris (β-epithiopropylthio) -4- (β-epithiopropylthiomethyl) -3-thiahexane, 1,8-bis (Β-epithiopropylthio) -4- (β-epithiopropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (β-epithiopropylthio) -4,5bis (β-epithio Propylthiomethyl) -3,6-dithiaoctane, 1,8-bis (β-epithiopropylthio) -4,4-bis (β-epithiopropylthiomethyl) -3,6-dithiaoctane, 1,8- Bis (β-epithiopropylthio) -2,4,5-tris (β-epithiopropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (β-epithiopropylthio) -2,5 -Bis (β-epi Opropylthiomethyl) -3,6-dithiaoctane, 1,9-bis (β-epithiopropylthio) -5- (β-epithiopropylthiomethyl) -5-[(2-β-epithiopropylthio Ethyl) thiomethyl] -3,7-dithianonane, 1,10-bis (β-epithiopropylthio) -5,6-bis [(2-β-epithiopropylthioethyl) thio] -3,6,9 -Trithiadecane, 1,11-bis (β-epithiopropylthio) -4,8-bis (β-epithiopropylthiomethyl) -3,6,9-trithiaundecane, 1,11-bis (β- Epithiopropylthio) -5,7-bis (β-epithiopropylthiomethyl) -3,6,9-trithiaundecane, 1,11-bis (β-epithiopropylthio) -5,7- [ (2-β-epithiopropylthio Ethyl) thiomethyl] -3,6,9-trithiaundecane, 1,11-bis (β-epithiopropylthio) -4,7-bis (β-epithiopropylthiomethyl) -3,6,9- Examples include branched organic compounds such as trithiaundecane, and compounds in which at least one hydrogen of the episulfide group of these compounds is substituted with a methyl group.

Preferred specific examples of the organic compound having a cyclic aliphatic skeleton of (B) include:
1,3 and 1,4-bis (β-epithiopropylthio) cyclohexane,
1,3 and 1,4-bis (β-epithiopropylthiomethyl) cyclohexane, bis [4- (β-epithiopropylthio) cyclohexyl] methane,
2,2-bis [4- (β-epithiopropylthio) cyclohexyl] propane, bis [4- (β-epithiopropylthio) cyclohexyl] sulfide,
2,5-bis (β-epithiopropylthiomethyl) -1,4-dithiane,
Cycloaliphatic organic compounds such as 2,5-bis (β-epithiopropylthioethylthiomethyl) -1,4-dithiane and compounds in which at least one hydrogen of the episulfide group of these compounds is substituted by a methyl group And the like.

Preferred specific examples of the organic compound having an aromatic skeleton (C) include 1,3 and 1,4-bis (β-epithiopropylthio) benzene, 1,3 and 1,4-bis (β -Epithiopropylthiomethyl) benzene, bis [4- (β-epithiopropylthio) phenyl] methane, 2,2-bis [4- (β-epithiopropylthio) phenyl] propane, bis [4- ( aromatic organic compounds such as β-epithiopropylthio) phenyl] sulfide, bis [4- (β-epithiopropylthio) phenyl] sulfone, 4,4′-bis (β-epithiopropylthio) biphenyl and the like; And a compound in which at least one hydrogen of the episulfide group of the compound of the formula (1) is substituted with a methyl group. However, the present invention is not limited to these, and these may be used alone or in combination of two or more. The most preferred compound is bis (β-epithiopropyl) sulfide.

The compound (b) of the present invention having one or more SH groups includes mercaptans, thiophenols, and mercaptans having an unsaturated group such as vinyl, aromatic vinyl, methacryl, acryl, and allyl; Thiophenols and the like. More specifically,
As mercaptans, methyl mercaptan, ethyl mercaptan, n-propyl mercaptan, n-butyl mercaptan, allyl mercaptan, n-hexyl mercaptan, n-octyl mercaptan, n-decyl mercaptan, n-dodecyl mercaptan, n-tetradecyl mercaptan, n-hexadecyl mercaptan, n-octadecyl mercaptan, cyclohexyl mercaptan, isopropyl mercaptan, tert-butyl mercaptan, tert-nonyl mercaptan, tert-dodecyl mercaptan, benzyl mercaptan, 4-chlorobenzyl mercaptan, methyl thioglycolate, ethyl thioglycolate, n-butylthioglycolate, n-octylthioglycolate, methyl (3-mercaptopro Onate), ethyl (3-mercaptopropionate), 3-methoxybutyl (3-mercaptopropionate), n-butyl (3-mercaptopropionate), 2-ethylhexyl (3-ercaptopropionate) And monomercaptans such as n-octyl (3-mercaptopropionate); methanedithiol, 1,2-dimercaptoethane, 1,2-dimercaptopropane, 2,2-dimercaptopropane, 1,3-di Mercaptopropane, 1,2,3-trimercaptopropane, 1,4-dimercaptobutane, 1,6-dimercaptohexane, bis (2-mercaptoethyl) sulfide, 1,2-bis (2-mercaptoethylthio) Ethane, 1,5-dimercapto-3-oxapentane, 1,8-dimercapto-3,6-dioxa Butane, 2,2-dimethylpropane-1,3-dithiol, 3,4-dimethoxybutane-1,2-dithiol, 2-mercaptomethyl-1,3-dimercaptopropane, 2-mercaptomethyl-1,4-dithiol Dimercaptobutane, 2- (2-mercaptoethylthio) -1,3-dimercaptopropane, 1,2-bis (2-mercaptoethylthio) -3-mercaptopropane, 1,1,1-tris (mercaptomethyl ) Propane, tetrakis (mercaptomethyl) methane, ethylene glycol bis (2-mercaptoacetate), ethylene glycol bis (3-mercaptopropionate), 1,4-butanediol bis (2-mercaptoacetate), 1,4- Butanediol bis (3-mercaptopropionate), trimethylolpropant Squirrel (2-mercaptoacetate), trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (2-mercaptoacetate), pentaerythritol tetrakis (3-mercaptopropionate), 1,1-dimercapto Cyclohexane, 1,4-dimercaptocyclohexane, 1,3-dimercaptocyclohexane, 1,2-dimercaptocyclohexane, 1,4-bis (mercaptomethyl) cyclohexane, 1,3-bis (mercaptomethyl) cyclohexane, 2, 5-bis (mercaptomethyl) -1,4-dithiane, 2,5-bis (2-mercaptoethyl) -1,4-dithiane, 2,5-bis (mercaptomethyl) -1-thiane, 2,5- Bis (2-mercaptoethyl) -1-thiane, 1, 4-bis (mercaptomethyl) benzene, 1,3-bis (mercaptomethyl) benzene, bis (4-mercaptophenyl) sulfide, bis (4-mercaptophenyl) ether, 2,2-bis (4-mercaptophenyl) propane , Bis (4-mercaptomethylphenyl) sulfide, bis (4-mercaptomethylphenyl) ether, 2,2-bis (4-mercaptomethylphenyl) propane, 2,5-dimercapto-1,3,4-thiadiazole, And polymercaptans such as 4-thiophedithiol.
Examples of thiophenols include thiophenol, 4-ter-butylthiophenol, 2-methylthiophenol, 3-methylthiophenol, 4-methylthiophenol, 1,2-dimercaptobenzene, 1,3-dimercaptobenzene, And thiophenols such as 4-dimercaptobenzene.
Further, mercaptans and thiophenols having an unsaturated group are specifically shown below.
Examples of mercaptans having an unsaturated group include allyl mercaptan, 2-vinylbenzyl mercaptan, 3-vinylbenzyl mercaptan, and 4-vinylbenzyl mercaptan.
Examples of thiophenols having an unsaturated group include 2-vinylthiophenol, 3-vinylthiophenol, 4-vinylthiophenol and the like. From the viewpoint of heat resistance, preferred compounds are mercaptans and thiophenols. These may be used alone or in combination of two or more.

The composition of the present invention can be heated and polymerized in the presence or absence of a curing catalyst to produce a resin. A preferred method is a method using a curing catalyst. As the curing catalyst, amines, phosphines, mineral acids, Lewis acids, organic acids, silicic acids, tetrafluoroboric acid and the like are used. As a specific example,
(1) Ethylamine, n-propylamine, sec-propylamine, n-butylamine, sec-butylamine, i-butylamine, ter-butylamine, pentylamine, hexylamine, heptylamine, octylamine, decylamine, laurylamine, mystylamine Lamine, 1,2-dimethylhexylamine, 3-pentylamine, 2-ethylhexylamine, allylamine, aminoethanol, 1-aminopropanol, 2-aminopropanol, aminobutanol, aminopentanol, aminohexanol, 3-ethoxypropylamine , 3-propoxypropylamine, 3-isopropoxypropylamine, 3-butoxypropylamine, 3-isobutoxypropylamine, 3- (2-ethylhexyloxy) propylamido Primary amines such as aminocyclopentane, aminocyclohexane, aminonorbornene, aminomethylcyclohexane, aminobenzene, benzylamine, phenethylamine, α-phenylethylamine, naphthylamine and furfurylamine; ethylenediamine, 1,2-diaminopropane, 1,3 -Diaminopropane, 1,2-diaminobutane, 1,3-diaminobutane, 1,4-diaminobutane, 1,5-diaminopentane, 1,6-diaminohexane, 1,7-diaminoheptane, 1,8- Diaminooctane, dimethylaminopropylamine, diethylaminopropylamine, bis- (3-aminopropyl) ether, 1,2-bis- (3-aminopropoxy) ethane, 1,3-bis- (3-aminopropoxy) -2 , 2'-dimethyl Lopan, aminoethylethanolamine, 1,2-, 1,3- or 1,4-bisaminocyclohexane, 1,3- or 1,4-bisaminomethylcyclohexane, 1,3- or 1,4-bisamino Ethylcyclohexane, 1,3- or 1,4-bisaminopropylcyclohexane, hydrogenated 4,4'-diaminodiphenylmethane, 2- or 4-aminopiperidine, 2- or 4-aminomethylpiperidine, 2- or 4-amino Ethyl piperidine, N-aminoethyl piperidine, N-aminopropyl piperidine, N-aminoethyl morpholine, N-aminopropyl morpholine, isophorone diamine, menthanediamine, 1,4-bisaminopropyl piperazine, o-, m-, or p -Phenylenediamine, 2,4- Or 2,6-tolylenediamine, 2,4-toluenediamine, m-aminobenzylamine, 4-chloro-o-phenylenediamine, tetrachloro-p-xylylenediamine, 4-methoxy-6-methyl-m -Phenylenediamine, m- or p-xylylenediamine, 1,5- or 2,6-naphthalenediamine, benzidine, 4,4'-bis (o-toluidine), dianisidine, 4,4'-diaminodiphenylmethane 2,2- (4,4'-diaminodiphenyl) propane, 4,4'-diaminodiphenyl ether, 4,4'-thiodianiline, 4,4'-diaminodiphenylsulfone, 4,4'-diaminoditolylsulfone, Methylenebis (o-chloroaniline), 3,9-bis (3-aminopropyl) 2,4,8,10-tetraoxo Spiro [5,5] undecane, diethylenetriamine, iminobispropylamine, methyliminobispropylamine, bis (hexamethylene) triamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, N-aminoethylpiperazine, N-amino Primary polyamines such as propylpiperazine, 1,4-bis (aminoethylpiperazine), 1,4-bis (aminopropylpiperazine), 2,6-diaminopyridine, bis (3,4-diaminophenyl) sulfone; diethylamine; Dipropylamine, di-n-butylamine, di-sec-butylamine, diisobutylamine, di-n-pentylamine, di-3-pentylamine, dihexylamine, octylamine, di (2-ethylhexyl) amine, methyl Hexylamine, diallylamine, pyrrolidine, piperidine, 2-, 3-, 4-picoline, 2,4-, 2,6-, 3,5-lupetidine, diphenylamine, N-methylaniline, N-ethylaniline, dibenzylamine And secondary amines such as methylbenzylamine, dinaphthylamine, pyrrole, indoline, indole and morpholine; N, N'-dimethylethylenediamine, N, N'-dimethyl-1,2-diaminopropane, N, N'-dimethyl- 1,3-diaminopropane, N, N′-dimethyl-1,2-diaminobutane, N, N′-dimethyl-1,3-diaminobutane, N, N′-dimethyl-1,4-diaminobutane, N , N'-dimethyl-1,5-diaminopentane, N, N'-dimethyl-1,6-diaminohexane, N, N'-dimethyl-1,7- Aminoheptane, N, N'-diethylethylenediamine, N, N'-diethyl-1,2-diaminopropane, N, N'-diethyl-1,3-diaminopropane, N, N'-diethyl-1,2- Diaminobutane, N, N'-diethyl-1,3-diaminobutane, N, N'-diethyl-1,4-diaminobutane, N, N'-diethyl-1,6-diaminohexane, piperazine, 2-methyl Piperazine, 2,5- or 2,6-dimethylpiperazine, homopiperazine, 1,1-di- (4-piperidyl) methane, 1,2-di- (4-piperidyl) ethane, 1,3-di- ( Secondary polyamines such as 4-piperidyl) propane, 1,4-di- (4-piperidyl) butane, tetramethylguanidine; trimethylamine, triethylamine, tri-n-propylamine; L-iso-propylamine, tri-1,2-dimethylpropylamine, tri-3-methoxypropylamine, tri-n-butylamine, tri-iso-butylamine, tri-sec-butylamine, tri-pentylamine, tri- 3-pentylamine, tri-n-hexylamine, tri-n-octylamine, tri-2-ethylhexylamine, tri-dodecylamine, tri-laurylamine, dicyclohexylethylamine, cyclohexyldiethylamine, tri-cyclohexylamine, N, N -Dimethylhexylamine, N-methyldihexylamine, N, N-dimethylcyclohexylamine, N-methyldicyclohexylamine, N, N-diethylethanolamine, N, N-dimethylethanolamine, N-ethyldiethanol Amine, triethanolamine, tribenzylamine, N, N-dimethylbenzylamine, diethylbenzylamine, triphenylamine, N, N-dimethylamino-p-cresol, N, N-dimethylaminomethylphenol, 2- (N , N-dimethylaminomethyl) phenol, N, N-dimethylaniline, N, N-diethylaniline, pyridine, quinoline, N-methylmorpholine, N-methylpiperidine, 2- (2-dimethylaminoethoxy) -4-methyl Tertiary amines such as -1,3,2-dioxabornane; tetramethylethylenediamine, pyrazine, N, N′-dimethylpiperazine, N, N′-bis ((2-hydroxy) propyl) piperazine, hexamethylenetetramine, N, N ′, N′-tetramethyl-1,3-butanamine, -Dimethylamino-2-hydroxypropane, diethylaminoethanol, N, N, N-tris (3-dimethylaminopropyl) amine, 2,4,6-tris (N, N-dimethylaminomethyl) phenol, heptamethylisobiguanide Tertiary polyamines such as imidazole, N-methylimidazole, 2-methylimidazole, 4-methylimidazole, N-ethylimidazole, 2-ethylimidazole, 4-ethylimidazole, N-butylimidazole, 2-butylimidazole, N -Undecylimidazole, 2-undecylimidazole, N-phenylimidazole, 2-phenylimidazole, N-benzylimidazole, 2-benzylimidazole, 1-benzyl-2-methylimidazole, N- (2'-cyanoethyl)- -Methylimidazole, N- (2'-cyanoethyl) -2-undecylimidazole, N- (2'-cyanoethyl) -2-phenylimidazole, 3,3-bis- (2-ethyl-4-methylimidazolyl) methane Various imidazoles such as adducts of alkylimidazole and isocyanuric acid, and condensates of alkylimidazole and formaldehyde; 1,8-diazabicyclo (5,4,0) undecene-7,1,5-diazabicyclo (4,3, 0) Amidines such as nonene-5,6-dibutylamino-1,8-diazabicyclo (5,4,0) undecene-7; amine compounds represented by the above.
(2) Quaternary ammonium salts of the amines of (1) with halogens, mineral acids, Lewis acids, organic acids, silicic acids, tetrafluoroboric acid and the like.
(3) A complex of the amines of (1) with borane and boron trifluoride.
(4) trimethylphosphine, triethylphosphine, tri-iso-propylphosphine, tri-n-butylphosphine, tri-n-hexylphosphine, tri-n-octylphosphine, tricyclohexylphosphine, triphenylphosphine Fin, tribenzylphosphine, tris (2-methylphenyl) phosphine, tris (3-methylphenyl) phosphine, tris (4-methylphenyl) phosphine, tris (diethylamino) phosphine, tris (4-methylphenyl) phosphine, dimethylphenyl Phosphine such as phosphine, diethylphenylphosphine, dicyclohexylphenylphosphine, ethyldiphenylphosphine, diphenylcyclohexylphosphine, and chlorodiphenylphosphine .
(5) Mineral acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, and carbonic acid and half esters thereof.
(6) Lewis acids represented by boron trifluoride etherate of boron trifluoride.
(7) Organic acids represented by carboxylic acids and their half esters.
(8) Silicic acid, boric acid tetrafluoride.
And so on.
Among these, preferred are those with less coloring of the cured product, such as primary monoamines, secondary monoamines, tertiary monoamines, tertiary polyamines, imidazoles, amidines, quaternary ammonium salts, and phosphines. And a secondary monoamine, tertiary monoamine, tertiary polyamine, imidazoles, amidines, quaternary ammonium salts, and phosphines having one or less group capable of reacting with an episulfide group. These may be used alone or in combination of two or more. The above curing catalyst is usually used in an amount of 0.0001 mol to 1.0 mol, preferably 0.0001 mol, per 1 mol of the compound having one or more structures represented by the formula (1) in one molecule. Mole to 0.5 mole, more preferably 0.0001 mole to less than 0.1 mole, most preferably 0.0001 mole to 0.05 mole. If the amount of the curing catalyst is more than this, the refractive index and heat resistance of the cured product are reduced, and the cured product is colored. If the amount is less than this, the composition will not be cured sufficiently and the heat resistance will be insufficient.

Further, the composition of the present invention may be a compound (a) having two or more functional groups capable of reacting with an episulfide group and / or an epoxy group in the compound, or one or more of these functional groups and another homopolymerizable compound. Compounds having at least one functional group, compounds having at least one functional group capable of homopolymerization, and further having one functional group capable of reacting with an episulfide group and / or an epoxy group and capable of homopolymerization It can also be produced by curing and polymerizing with a compound. (A) Examples of the compound having two or more functional groups capable of reacting with an episulfide group and / or an epoxy group in the compound include an epoxy compound, a known episulfide compound, and a polyvalent carboxylic anhydride.
On the other hand, compounds having at least one functional group capable of reacting with an episulfide group and / or an epoxy group and at least one other functional group capable of being homopolymerized include non-functional compounds such as methacryl, acryl, allyl, vinyl, and aromatic vinyl. Examples thereof include an epoxy compound having a saturated group, an episulfide compound, and a carboxylic anhydride.
Examples of the compound having one or more functional groups capable of being homopolymerized include compounds having an unsaturated group such as methacryl, acryl, allyl, vinyl, and aromatic vinyl.
Specific examples of the compound having two or more functional groups capable of reacting with the episulfide group are shown below.

Specific examples of epoxy compounds include hydroquinone, catechol, resorcinol, bisphenol A, bisphenol F, bisphenol sulfone, bisphenol ether, bisphenol sulfide, bisphenol sulfide, halogenated bisphenol A, and condensation of epihalohydrin with a polyhydric phenol compound such as a novolak resin. Phenolic epoxy compounds produced; ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol , Neopentyl glycol, glycerin, trimethylolpropane trimethacrylate, pentae Such as thritol, 1,3- and 1,4-cyclohexanediol, 1,3- and 1,4-cyclohexane dimethanol, hydrogenated bisphenol A, bisphenol A · ethylene oxide adduct, bisphenol A · propylene oxide adduct, etc. Alcohol-based epoxy compounds produced by condensation of a polyhydric alcohol compound and epihalohydrin; adipic acid, sebacic acid, dodecanedicarboxylic acid, dimer acid, phthalic acid, iso, terephthalic acid, tetrahydrophthalic acid, methyltetrahydrophthalic acid, hexahydrophthalic acid , Hexahydroisophthalic acid, hexahydroterephthalic acid, hetic acid, nadic acid, maleic acid, succinic acid, fumaric acid, trimellitic acid, benzenebenzenecarboxylic acid, benzophenonetetracarboxylic acid, naphthalene dical Acid, a glycidyl ester-based epoxy compound produced by condensation of a polycarboxylic acid compound such as diphenyldicarboxylic acid and epihalohydrin; ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, 1,2-diaminobutane, 1,3-diaminobutane, 1,4-diaminobutane, 1,5-diaminopentane, 1,6-diaminohexane, 1,7-diaminoheptane, 1,8-diaminooctane, bis- (3-aminopropyl) Ether, 1,2-bis- (3-aminopropoxy) ethane, 1,3-bis- (3-aminopropoxy) -2,2′-dimethylpropane, 1,2-, 1,3- or 1,4 -Bisaminocyclohexane, 1,3- or 1,4-bisaminomethylcyclohexane, 1,3- or 1,4- Bisaminoethylcyclohexane, 1,3- or 1,4-bisaminopropylcyclohexane, hydrogenated 4,4′-diaminodiphenylmethane, isophoronediamine, 1,4-bisaminopropylpiperazine, m- or p-phenylenediamine, 2,4- or 2,6-tolylenediamine, m- or p-xylylenediamine, 1,5- or 2,6-naphthalenediamine, 4,4'-diaminodiphenylmethane, 4,4'-diamino Primary diamine such as diphenyl ether, 2,2- (4,4'-diaminodiphenyl) propane, N, N'-dimethylethylenediamine, N, N'-dimethyl-1,2-diaminopropane, N, N'-dimethyl- 1,3-diaminopropane, N, N′-dimethyl-1,2-diaminobutane, N N′-dimethyl-1,3-diaminobutane, N, N′-dimethyl-1,4-diaminobutane, N, N′-dimethyl-1,5-diaminopentane, N, N′-dimethyl-1,6 -Diaminohexane, N, N'-dimethyl-1,7-diaminoheptane, N, N'-diethylethylenediamine, N, N'-diethyl-1,2-diaminopropane, N, N'-diethyl-1,3 -Diaminopropane, N, N'-diethyl-1,2-diaminobutane, N, N'-diethyl-1,3-diaminobutane, N, N'-diethyl-1,4-diaminobutane, N, N ' -Diethyl-1,6-diaminohexane, piperazine, 2-methylpiperazine, 2,5- or 2,6-dimethylpiperazine, homopiperazine, 1,1-di- (4-piperidyl) -methane, Manufactured by condensation of a secondary diamine such as 2-di- (4-piperidyl) -ethane, 1,3-di- (4-piperidyl) -propane, 1,4-di- (4-piperidyl) -butane and epihalohydrin. 3,4-epoxycyclohexyl-3,4-epoxycyclohexanecarboxylate, vinylcyclohexanedioxide, 2- (3,4-epoxycyclohexyl) -5,5-spiro-3,4- Alicyclic epoxy compounds such as epoxycyclohexane-meta-dioxane and bis (3,4-epoxycyclohexyl) adipate; by epoxidation of unsaturated compounds such as cyclopentadiene epoxide, epoxidized soybean oil, epoxidized polybutadiene and vinylcyclohexene epoxide The epoxy compound to be produced; And urethane-based epoxy compounds produced from alcohol, phenol compounds, diisocyanates, glycidol, and the like.

具体 Specific examples of the episulfide compound include an episulfide compound obtained by episulfide-forming some or all of the epoxy groups of the above epoxy compound.

具体 Specific examples of the polycarboxylic acid anhydrides and the like include those described above as the raw materials for the reaction with the epihalohydrin described in the above epoxy compound.

In addition, representative specific examples of compounds having at least one functional group capable of reacting with an episulfide group and / or an epoxy group and at least one other functional group capable of homopolymerization are shown below.
Examples of the epoxy compound having an unsaturated group include vinylphenyl glycidyl ether, vinylbenzyl glycidyl ether, glycidyl methacrylate, glycidyl acrylate, and allyl glycidyl ether. As the episulfide compound having an unsaturated group, a compound in which the epoxy group of the epoxy compound having an unsaturated group is episulfided, such as vinylphenylthioglycidyl ether, vinylbenzylthioglycidyl ether, thioglycidyl methacrylate, thioglycidyl acrylate, And luthioglycidyl ether.

Specific examples of the compound having one or more homopolymerizable functional groups include methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, and triethylene. Glycol diacrylate, triethylene glycol dimethacrylate, polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, 1,3-butylene glycol diacrylate, 1,3-butylene glycol dimethacrylate, 1,6-hexanediol diacrylate, 1,6 -Hexanediol dimethacrylate, neopentyl glycol diacrylate, neopentyl glycol Over dimethacrylate, polypropylene glycol diacrylate, polypropylene glycol dimethacrylate,
2,2-bis [4- (acryloxyethoxy) phenyl] propane, 2,2-bis [4- (methacryloxyethoxy) phenyl] propane, 2,2-bis [4- (acryloxydiethoxy) phenyl] propane 2,2-bis [4- (methacryloxydiethoxy) phenyl] propane, 2,2-bis [4- (acryloxypolyethoxy) phenyl] propane, 2,2-bis [4- (methacryloxypolyethoxy) phenyl] Propane, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, hexa (acrylate) bis (2,2,2-trimethylolethyl) ether, bis (2,2,2-triacrylate) Methylolue (1) a compound having an ester structure of a monohydric or higher alcohol such as ether hexamethacrylate and acrylic acid or methacrylic acid; an allyl compound such as allyl sulfide, diallyl phthalate, or diethylene glycol bisallyl carbonate; a vinyl such as acrolein, acrylonitrile, or vinyl sulfide Compounds: Examples include aromatic vinyl compounds such as styrene, α-methylstyrene, methylvinylbenzene, ethylvinylbenzene, α-chlorostyrene, chlorovinylbenzene, vinylbenzyl chloride, p-divinylbenzene, and metadivinylbenzene.

Preferred examples of the compound having one functional group capable of reacting with an episulfide group and / or an epoxy group and capable of being homopolymerized include a compound having one epoxy group or one episulfide group. More specifically, ethylene oxide, propylene oxide, monoepoxy compounds such as glycidol, acetic acid, propionic acid, glycidyl esters of monocarboxylic acids such as benzoic acid, methyl glycidyl ether, ethyl glycidyl ether, propyl glycidyl ether, Glycidyl ethers such as butyl glycidyl ether; monoepisulfide compounds such as ethylene sulfide and propylene sulfide; thioglycidyl having a structure derived from the above-mentioned monocarboxylic acid and thioglycidol (1,2-epithio-3-hydroxypropane) Esters, methylthioglycidyl ether (1,2-epithiopropyloxymethane), ethylthioglycidyl ether, propylthioglycidyl ether, butylthioglycidyl ether It can be mentioned the thioglycidyl ethers. Among these, a compound having one episulfide group is more preferable.

A compound having two or more functional groups capable of reacting with an episulfide group and / or an epoxy group in the compound (a) of the present invention, or one or more of these functional groups and one or more other homopolymerizable functional groups The compound having the compound can be produced by curing and polymerizing in the presence of a curing polymerization catalyst. As the curing catalyst, the above-mentioned amines, phosphines, acids and the like are used. As specific examples, those described above are also used here.

Further, when a compound having an unsaturated group is used, it is preferable to use a radical polymerization initiator as a polymerization accelerator. The radical polymerization initiator is not particularly limited as long as it generates a radical by heating or ultraviolet light or an electron beam. For example, cumyl peroxy neodecanoate, diisopropyl peroxy dicarbonate, diallyl peroxy dicarbonate, di-n- Propyl peroxy dicarbonate, dimyristyl peroxy dicarbonate, cumyl peroxy neohexanoate, ter-hexyl peroxy neodecanoate, ter-butyl peroxy neodecanoate, ter-hexyl peroxy neodecanoate Peroxides such as tert-butylperoxyneohexanoate, 2,4-dichlorobenzoyl peroxide, benzoyl peroxide, dicumyl peroxide, di-tert-butyl peroxide; cumene hydroperoxide Hydroperoxides such as side and tert-butyl hydroperoxide; 2,2′-azobis (4-methoxy-2,4-dimethylvaleronitrile), 2,2′-azobis (2-cyclopropylpropionitrile) 2,2'-azobis (2,4-dimethylvaleronitrile), 2,2'-azobisisobutyronitrile, 2,2'-azobis (2-methylbutyronitrile), 1,1'-azobis (Cyclohexane-1-carbonitrile), 1-[(1-cyano-1-methylethyl) azo] formamide, 2-phenylazo-4-methoxy-2,4-dimethyl-valeronitrile 2,2′-azobis (2 -Methylpropane), known thermal polymerization catalysts such as azo compounds such as 2,2′-azobis (2,4,4-trimethylpentane), benzophenone, benzoinben Known photopolymerization catalysts such as zonzoin methyl ether are exemplified. Of these, preferred are peroxides, hydroperoxides and azo compounds, more preferred are peroxides and azo compounds, and most preferred are 2,2′-azobis ( 4-methoxy-2,4-dimethylvaleronitrile), 2,2'-azobis (2-cyclopropylpropionitrile), 2,2'-azobis (2,4-dimethylvaleronitrile), 2,2'- Azobisisobutyronitrile, 2,2'-azobis (2-methylbutyronitrile), 1,1'-azobis (cyclohexane-1-carbonitrile), 1-[(1-cyano-1-methylethyl) Azo] formamide, 2-phenylazo-4-methoxy-2,4-dimethyl-valeronitrile, 2,2'-azobis (2-methylpropane) 2,2'-azobis Is a (2,4,4-trimethylpentane) azo compounds such as. These can all be mixed and used.
Although the amount of the radical polymerization initiator varies depending on the components of the composition and the curing method, it cannot be generally determined, but is usually 0.01 wt% to 5.0 wt%, preferably 0 wt%, relative to the total amount of the composition. 0.1 wt% to 2.0 wt%.

In addition, when an optical material is obtained by polymerizing and curing the composition of the present invention, known additives such as an antioxidant and an ultraviolet absorber can be added to improve the practicality of the obtained material. is there. In addition, the composition of the present invention tends to peel off from the mold during polymerization, and in some cases, using or adding a known external and / or internal adhesiveness improver to improve the adhesion between the obtained cured material and the mold. It is also necessary to improve control. The term "internal adhesion improving agent" as used herein means, for example, a silane compound such as 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, and the like. 0.0001 to 5 parts by weight can be used for 100 parts by weight of the product. In order to further impart dyeability to the material obtained by polymerizing and curing the composition of the present invention, a compound having a hydroxyl group can be used as a dyeability improving component. The compound having a hydroxyl group referred to herein includes, for example, 3-phenoxy-2-hydroxypropyl acrylate, 2-hydroxyethyl isocyanurate bisacrylate, 2-hydroxyethyl acrylate, glycidol and the like. These can be used in an amount of 0.001 to 40 parts by weight based on 100 parts by weight of the composition of the present invention.

When the composition of the present invention is obtained by polymerization and curing, the compounds (a) and (b) serving as raw materials, and, if desired, the above-mentioned curing catalyst, an unsaturated group-containing episulfide group and / or an epoxy group, if desired. When a glycidyl methacrylate, thioglycidyl methacrylate (e.g., an epoxy group of glycidyl methacrylate that has been episulfided) that can react with water is used in combination, a radical polymerization initiator, a radical-polymerizable monomer, and an adhesion improver, After mixing additives such as an antioxidant and an ultraviolet absorber other than the compound (b) described above, the mixture is polymerized and cured as described below to obtain an optical material such as a lens. That is, the raw material after mixing is poured into a glass or metal mold, the polymerization and curing reaction is advanced by heating, and then the mold is removed from the mold. Compounds having two or more functional groups capable of reacting with the episulfide group and / or epoxy group of the raw material (a) compound, the (b) compound and the auxiliary raw material (a) compound, and one or more of these functional groups and another compound A compound having at least one polymerizable functional group, a compound having at least one homopolymerizable functional group, one functional group capable of reacting with an episulfide group and / or an epoxy group and capable of being homopolymerized; When the compound can be reacted alone, it can be used alone and / or in combination with other reactable raw materials and / or sub-materials. When the compound cannot be reacted alone, it can be reacted with other raw materials and / or sub-materials. Before casting, a part or the whole amount of the raw material in combination with the raw materials may be used in the presence or absence of the catalyst, with stirring or without stirring at −100 to 160 ° C. for 0.1 to 48 hours. After allowed preliminary reaction Te, it is also possible to perform the casting by adjusting the composition. The term “single reaction possible” as used herein means that the raw material or the auxiliary raw material is composed of only a compound that cannot be reacted alone, or that it is composed of a plurality of components that cannot be reacted alone and cannot react with each other. The curing time is from 0.1 to 100 hours, usually from 1 to 48 hours, and the curing temperature is from -10 to 160C, usually from -10 to 140C. 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, or a combination thereof. After the curing is completed, annealing the material at a temperature of 50 to 150 ° C. for about 10 minutes to 5 hours is a preferable treatment for removing the distortion of the optical material of the present invention. Further, if necessary, a surface treatment such as dyeing, hard coating, anti-reflection and imparting anti-fogging property can be performed.
The method for producing the cured resin optical material of the present invention will be described below in more detail. As described above, the main raw material and the auxiliary raw material are mixed and then injected and cured into a mold. The main raw material (a) and the compound (b) are used together with the episulfide group and / or epoxy compound used as desired. A compound having two or more functional groups capable of reacting with a group, or a compound having one or more of these functional groups and one or more other functional groups capable of homopolymerization, or a compound having one or more functional groups capable of homopolymerization , A compound having one functional group capable of reacting with an episulfide group and / or an epoxy group and capable of being homopolymerized, and a curing catalyst, a radical polymerization initiator, and an adhesion improver used as required. , Stabilizers, etc., may be mixed together in the same container under stirring at the same time, each raw material may be added and mixed stepwise, or several components may be separately mixed and then remixed in the same container. . Upon mixing, the set temperature, the time required for the mixing, etc. may be basically any conditions under which each component is sufficiently mixed, but an excessive temperature and time may cause an undesired reaction between each raw material and additive, Further, it is not appropriate because the viscosity increases and the casting operation becomes difficult. Each raw material and auxiliary raw materials may be mixed in any order. The mixing temperature should be in the range of about -20C to 100C, the preferred temperature range is -10C to 50C, more preferably -5C to 30C. The mixing time is 1 minute to 5 hours, preferably 5 minutes to 2 hours, more preferably 5 minutes to 30 minutes, and most preferably about 5 minutes to 15 minutes. Performing a degassing operation under reduced pressure before, during or after the mixing of the raw materials and additives is a preferable method from the viewpoint of preventing the formation of bubbles during the subsequent medium-sized polymerization curing. At this time, the degree of pressure reduction is from about 0.1 mmHg to 700 mmHg, preferably from 10 mmHg to 300 mmHg. Further, it is preferable to remove impurities and the like by filtering them with a micro filter or the like at the time of injection into the mold in order to further improve the quality of the optical material of the present invention.

Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited thereto. The obtained polymer was evaluated by the following method.
Oxidation resistance: Evaluated by the change in b value before and after heat treatment at 120 ° C. for 3 hours in air. B value after heating-b value before heating = change amount.
Heat resistance: The evaluation was performed at a temperature showing an elastic modulus of 0.5 GPa in dynamic viscoelasticity measurement of bending. The measurement conditions were a frequency of 10 Hz, and the temperature was increased from 30 ° C. to 130 ° C. at a rate of 2 ° C./min.
Refractive index (nD), Abbe number (νD): Measured at 25 ° C. using an Abbe refractometer.

Reference Example 1
A mixture of 67 parts by weight of bis (β-epithiopropyl) sulfide as the compound (a) and 33 parts by weight of thiophenol as the compound (b) was mixed with 0.5 parts by weight of 2-diethylaminoethanol as a catalyst at a total of 100 parts by weight. Stir to obtain a homogeneous liquid. At this time, the molar ratio of the SH group in the compound (b) to the total episulfide group in the compound (a) was 0.399. Next, this composition was poured into a lens mold, and the temperature was raised from 10 ° C. to 120 ° C. in an oven over 22 hours to polymerize and cure to produce a lens. The obtained lens exhibited good oxidation resistance and heat resistance, and not only had excellent optical and physical properties, but also had a good surface condition, and almost no striae or surface deformation was observed. . Table 1 shows the characteristics of the obtained lens.
Reference Examples 2 to 14
The same operation as in Reference Example 1 was changed to the composition shown in the table, and this operation was repeated using 0.5 of 2-diethylaminoethanol as a catalyst with respect to 100 parts by weight of the composition. In each case, the obtained lens shows good oxidation resistance and heat resistance, and has not only excellent optical and physical properties, but also a good surface condition, and almost no striae and surface deformation. I was not able to admit. Various properties of the obtained lens are shown in Table 1 for Reference Examples 2 to 13, and Table 2 for Reference Example 14.

Examples 1-2
The same operation as in Reference Example 1 was changed to the composition shown in the table, and this operation was repeated using 0.5 of 2-diethylaminoethanol as a catalyst with respect to 100 parts by weight of the composition. In each case, the obtained lens shows good oxidation resistance and heat resistance, and has not only excellent optical and physical properties, but also a good surface condition, and almost no striae and surface deformation. I was not able to admit. Table 2 shows the properties of the obtained lens.

Reference Example 15
(A) 93 parts by weight of bis (β-epithiopropyl) sulfide as a compound, (b) 7 parts by weight of thiophenol as a compound, 100 parts by weight in total, 0.5 parts by weight of 2-diethylaminoethanol as a catalyst, an antioxidant 0.2 parts by weight of 2,6-di-tert-butyl-4-methylphenol, and 0.1 parts by weight of 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole as an ultraviolet absorber, room temperature And stirred to obtain a uniform liquid. Further, deaeration was sufficiently performed under a reduced pressure of 10 mmHg. At this time, the molar ratio of the SH group in the compound (b) to the total amount of episulfide groups in the compound (a) was 0.061. Next, this composition was poured into a lens mold, and the temperature was raised from 10 ° C. to 120 ° C. in an oven over 22 hours to polymerize and cure to produce a lens. The obtained lens exhibited good oxidation resistance and heat resistance, and not only had excellent optical and physical properties, but also had a good surface condition, and almost no striae or surface deformation was observed. . Table 2 shows the characteristics of the obtained lens.
Reference Example 16
The same operation as in Reference Example 15 was carried out by adding 93 parts by weight of bis (β-epithiopropyl) sulfide as the compound (a) and 7 parts by weight of n-butylthioglycolate as the compound (b) to a total of 100 parts by weight as a catalyst. 0.5 parts by weight of diethylaminoethanol, 0.2 parts by weight of 2,6-di-tert-butyl-4-methylphenol as an antioxidant, and 2- (2-hydroxy-5-tert-octylphenyl) as an ultraviolet absorber ) Using 0.1 parts by weight of benzotriazole. At this time, the molar ratio of the SH group in the compound (b) to the total amount of the episulfide group in the compound (a) was 0.045. The obtained lens exhibited good oxidation resistance and heat resistance, and not only had excellent optical and physical properties, but also had a good surface condition, and almost no striae or surface deformation was observed. . Table 2 shows the characteristics of the obtained lens.
Reference Example 17
The same operation as in Reference Example 15 was carried out by adding (a) 95 parts by weight of bis (β-epithiopropyl) sulfide as a compound and (b) 5 parts by weight of bis (2-mercaptoethyl) sulfide as a compound to a total of 100 parts by weight as a catalyst. 0.5 parts by weight of 2-diethylaminoethanol, 0.2 parts by weight of 2,6-di-tert-butyl-4-methylphenol as an antioxidant, and 2- (2-hydroxy-5-tert-octyl) as an ultraviolet absorber (Phenyl) benzotriazole using 0.1 parts by weight. At this time, the molar ratio of the SH group in the compound (b) to the total of the episulfide groups in the compound (a) was 0.061. The obtained lens exhibited good oxidation resistance and heat resistance, and not only had excellent optical and physical properties, but also had a good surface condition, and almost no striae or surface deformation was observed. . Table 2 shows the characteristics of the obtained lens.
Reference Example 18
(A) 93 parts by weight of bis (β-epithiopropyl) sulfide as a compound, and (b) 7 parts by weight of thiophenol as a compound, and 100 parts by weight of 3-glycidoxypropyltrimethoxysilane as an adhesion improver. 05 parts by weight and 0.5 parts by weight of 2-diethylaminoethanol as a catalyst were mixed and stirred at room temperature to obtain a uniform liquid. At this time, the molar ratio of the SH group in the compound (b) to the total amount of episulfide groups in the compound (a) was 0.061. Then, the composition was poured into a lens mold, and the temperature was raised from 10 ° C. to 120 ° C. in an oven over 22 hours to polymerize and cure, thereby producing a lens. The polymer was not peeled off during the polymerization, and a lens could be obtained. The obtained lens shows good oxidation resistance and heat resistance, and also has not only excellent optical properties and physical properties, but also has a better surface condition than when not used by adding an adhesion improver, Striae and surface deformation were hardly observed. Table 2 shows the characteristics of the obtained lens.
Reference Example 19
The same operation as in Reference Example 18 was carried out by adding 93 parts by weight of bis (β-epithiopropyl) sulfide as the compound (a) and 7 parts by weight of n-butylthioglycolate as the compound (b) to a total of 100 parts by weight of the adhesiveness improving agent. Using 0.05 parts by weight of 3-glycidoxypropyltrimethoxysilane as a catalyst and 0.5 parts by weight of 2-diethylaminoethanol as a catalyst. At this time, the molar ratio of the SH group in the compound (b) to the total amount of the episulfide group in the compound (a) was 0.045. The polymer was not peeled off during the polymerization, and a lens could be obtained. The obtained lens shows good oxidation resistance and heat resistance, and also has not only excellent optical properties and physical properties, but also has a better surface condition than when not used by adding an adhesion improver, Striae and surface deformation were hardly observed. Table 2 shows the characteristics of the obtained lens.
Reference Example 20
The same operation as in Reference Example 18 was carried out to give a total of 100 parts by weight of (a) 95 parts by weight of bis (β-epithiopropyl) sulfide as a compound and (b) 5 parts by weight of bis (2-mercaptoethyl) sulfide as a compound. The test was carried out using 0.05 parts by weight of 3-glycidoxypropyltrimethoxysilane as an improving agent and 0.5 parts by weight of 2-diethylaminoethanol as a catalyst. At this time, the molar ratio of the SH group in the compound (b) to the total amount of episulfide groups in the compound (a) was 0.061. The polymer was not peeled off during the polymerization, and a lens could be obtained. The obtained lens shows good oxidation resistance and heat resistance, and not only has excellent optical and physical properties, but also has a better surface state than the case where it is not used by adding an adhesion improver, Striae and surface deformation were hardly observed. Table 2 shows the characteristics of the obtained lens.
Reference Example 21
(A) 93 parts by weight of bis (β-epithiopropyl) sulfide as a compound, (b) 7 parts by weight of thiophenol as a compound, 5 parts by weight of glycidol as a dyeing improver, 2-diethylaminoethanol as a catalyst 0.5 parts by weight were mixed and stirred at room temperature to obtain a uniform liquid. At this time, the molar ratio of the SH group in the compound (b) to the total amount of episulfide groups in the compound (a) was 0.061. Then, the composition was poured into a lens mold, and the temperature was raised from 10 ° C. to 120 ° C. in an oven over 22 hours to polymerize and cure, thereby producing a lens. The obtained lens showed good oxidation resistance and heat resistance, and the dyeability was improved by the addition of a dye improving component. In addition to having excellent optical and physical characteristics, the surface condition was good, and striae and surface deformation were hardly observed. Table 2 shows the characteristics of the obtained lens.
Reference Example 22
The same operation as in Reference Example 21 was carried out by adding (a) 93 parts by weight of bis (β-epithiopropyl) sulfide as a compound and (b) 7 parts by weight of n-butylthioglycolate as a compound to a total of 100 parts by weight of a dyeability improver. Of glycidol and 0.5 parts by weight of 2-diethylaminoethanol as a catalyst. At this time, the molar ratio of the SH group in the compound (b) to the total of the episulfide groups in the compound (a) was 0.045. The obtained lens showed good oxidation resistance and heat resistance, and the dyeability was improved by the addition of a dye improving component. In addition to having excellent optical and physical characteristics, the surface condition was good, and striae and surface deformation were hardly observed. Table 2 shows the characteristics of the obtained lens.
Reference Example 23
The same operation as in Reference Example 21 was carried out to give a dyeability of 95 parts by weight of bis (β-epithiopropyl) sulfide as the compound (a) and 5 parts by weight of bis (2-mercaptoethyl) sulfide as the compound (b). The test was carried out using 5 parts by weight of 3-phenoxy-2-hydroxypropyl acrylate as an improving agent and 0.5 parts by weight of 2-diethylaminoethanol as a catalyst. At this time, the molar ratio of the SH group in the compound (b) to the total amount of episulfide groups in the compound (a) was 0.061. The obtained lens showed good oxidation resistance and heat resistance, and the dyeability was improved by the addition of a dye improving component. In addition to having excellent optical and physical characteristics, the surface condition was good, and striae and surface deformation were hardly observed. Table 2 shows properties of the obtained lens.

Comparative Example 1
The same operation as in Example 1 was performed using (a) 100 parts by weight of bis (β-epithiopropyl) sulfide as the compound, (b) using 0.5 part by weight of 2-diethylaminoethanol as the catalyst without using the compound. Was. The results are shown in Table 3. (B) Oxidation resistance was not satisfactory because no compound was used.
Comparative Examples 2 to 10
The same operation as in Example 1 was carried out using the composition shown in the table and using 0.5 part by weight of 2-diethylaminoethanol as a catalyst with respect to 100 parts by weight of the composition. The results are shown in Table 3. In each case, the heat resistance was poor because the molar ratio of the total of active hydrogen in the compound (b) to the total of the episulfide groups in the compound (a) exceeded the range of the present invention.
Comparative Example 11
The same operation as in Example 1 was carried out using the composition shown in the table and using 0.5 part by weight of 2-diethylaminoethanol as a catalyst with respect to 100 parts by weight of the composition. The results are shown in Table 3. (A) Since an episulfide compound other than the present invention was used as the compound, the oxidation resistance was not satisfactory.

Claims (7)

(A) a compound having two or more structures represented by the following formula (1) in one molecule;

(Wherein, R ¹ represents a hydrocarbon having 1 or 2 carbon atoms, R ² , R ³ , and R ⁴ each represent hydrogen. X represents S or O, and the number of S constitutes a three-membered ring. On average, it is 50% or more of the sum of S and O.)
(B) a compound having one or more SH groups per molecule,
The composition for an optical material, wherein the ratio of the total number of moles of SH groups in the compound (b) to the total number of moles of episulfide groups and / or epoxy groups in the compound (a) is 0.001 to 0.5. . (A) an organic compound having a chain aliphatic skeleton in which two or more structures represented by the formula (1) are bonded to each other; and (b) a compound having one or more SH groups per molecule. 2. The composition for an optical material according to claim 1, wherein the ratio of the total number of moles of the SH group in the compound (b) to the total number of moles of the episulfide group in the compound is 0.001 to 0.5. (A) an organic compound having a chain aliphatic skeleton in which two structures represented by the formula (1) are bonded to each other; and (b) a compound having one or more SH groups per molecule. The composition for an optical material according to claim 1, wherein the ratio of the total number of moles of the SH group in the compound (b) to the total number of moles of the episulfide group in the compound is 0.001 to 0.5. (1) R ¹ 'composition for optical materials according 1, wherein any one of claims 1 to 3 is a hydrocarbon having one carbon atom. The composition for an optical material according to any one of claims 1 to 4, wherein X in the formula (1) is S. The composition for an optical material according to any one of claims 1 to 4, wherein the compound (b) is a polymercaptan. An optical material obtained by polymerizing and curing the composition for an optical material according to claim 1.