JP2010043148A - Thietane compound, polymerizable composition containing the same and use of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thietane compound enhancing the refractive index of its resin. <P>SOLUTION: The thietane compound contains a thietane group and an In atom in the molecule and is represented by general formula (1). (Wherein, X<SB>1</SB>represents a sulfur atom or oxygen atom, p represents an integer of 1-3, r is 3-p, Y is a monovalent inorganic or organic group, a plurality of Ys each independently represents an inorganic or organic group when r is 2, and the plurality of Ys may be joined together to form a ring containing an In atom). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a thietane compound, a polymerizable composition containing the same, and use thereof.

  In recent years, a transparent organic polymer material has been used as a transparent material replacing inorganic glass. When such a material is used for an optical resin, for example, it is generally required to have a high refractive index while having generally required characteristics such as transparency, thermal characteristics, and mechanical characteristics.

There exists a thing of patent document 1 as a prior art regarding such resin. This document describes metal-containing thietane compounds. Moreover, a high refractive index optical resin having a refractive index (nd) exceeding 1.7 is described.
International Publication No. 2005-095490 Pamphlet JP 2003-327583 A

  However, the technique described in Patent Document 1 described above still has room for improvement in terms of improving the refractive index of the transparent resin.

（上記一般式（１）中、Ｘ₁は硫黄原子または酸素原子を表す。ｐは１以上３以下の整数を表す。ｒは３−ｐである。Ｙは１価の無機または有機基である。ｒが２の場合、複数のＹは、各々独立に無機または有機基を表す。また、複数のＹが互いに結合し、Ｉｎ原子を含む環を形成していてもよい。）
［２］［１］に記載のチエタン化合物において、前記一般式（１）において、ｐ＝３、ｒ＝０である、チエタン化合物；
［３］［１］または［２］に記載のチエタン化合物において、前記一般式（１）において、Ｘ₁が硫黄原子である、チエタン化合物；
［４］［１］乃至［３］いずれかに記載のチエタン化合物を含む、重合性組成物；
［５］［４］に記載の重合性組成物において、さらに、チオール化合物を含む、重合性組成物；
［６］［５］に記載の重合性組成物において、前記チオール化合物が、３−メルカプトチエタン、４−メルカプトメチル−１，８−ジメルカプト−３，６−ジチアオクタン、４，８−ジメルカプトメチル−１，１１−ジメルカプト−３，６，９−トリチアウンデカンおよび２，５−ビス（メルカプトメチル）−１，４−ジチアンからなる群から選択される一種以上である、重合性組成物；
［７］［４］乃至［６］いずれかに記載の重合性組成物を注型重合して樹脂を得る工程を含む、樹脂の製造方法；
［８］［４］乃至［６］いずれかに記載の重合性組成物を重合して得られる樹脂；
［９］［８］に記載の樹脂からなる光学部品；
［１０］［４］乃至［６］いずれかに記載の重合性組成物の光学部品としての使用；
［１１］［４］乃至［６］いずれかに記載の重合性組成物を重合させた樹脂の光学部品としての使用；
である。 The present invention
[1] A thietane compound represented by the following general formula (1):

(In the above general formula (1), X ₁ represents a sulfur atom or an oxygen atom. P represents an integer of 1 to 3. r is 3-p. Y is a monovalent inorganic or organic group. When r is 2, a plurality of Y each independently represents an inorganic or organic group, and a plurality of Y may be bonded to each other to form a ring containing an In atom.)
[2] The thietane compound according to [1], wherein in the general formula (1), p = 3 and r = 0;
[3] The thietane compound according to [1] or [2], wherein in the general formula (1), X ₁ is a sulfur atom;
[4] A polymerizable composition comprising the thietane compound according to any one of [1] to [3];
[5] The polymerizable composition as set forth in [4], further comprising a thiol compound;
[6] The polymerizable composition according to [5], wherein the thiol compound is 3-mercaptothietane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8-dimercaptomethyl. A polymerizable composition that is at least one selected from the group consisting of -1,11-dimercapto-3,6,9-trithiaundecane and 2,5-bis (mercaptomethyl) -1,4-dithiane;
[7] A method for producing a resin, comprising a step of cast polymerization of the polymerizable composition according to any one of [4] to [6] to obtain a resin;
[8] A resin obtained by polymerizing the polymerizable composition according to any one of [4] to [6];
[9] An optical component made of the resin according to [8];
[10] Use of the polymerizable composition according to any one of [4] to [6] as an optical component;
[11] Use of a resin obtained by polymerizing the polymerizable composition according to any one of [4] to [6] as an optical component;
It is.

  According to the present invention, a novel thietane compound containing In (indium) as a constituent element is provided.

  Hereinafter, although this invention is demonstrated using a specific example, this invention is not limited to this. Moreover, in this invention, about each component or group, what was illustrated may be used independently and may be used in multiple combination.

First, the thietane compound of the present invention will be described.
The thietane compound of the present invention is a compound containing a thietane group and an In atom in the molecule, and is represented by the following general formula (1).

(In the general formula (1), X ₁ represents a sulfur atom or an oxygen atom. P represents an integer of 1 or more and 3 or less. R is 3-p.
Y is a monovalent inorganic or organic group. When r is 2, a plurality of Y each independently represents an inorganic or organic group. Moreover, several Y may couple | bond together and may form the ring containing In atom. )

In the general formula (1), X ₁ is a sulfur atom or an oxygen atom. From the viewpoint of further improving the refractive index of the resin obtained by polymerizing the polymerizable composition containing the thietane compound represented by the general formula (1), X ₁ is preferably a sulfur atom.

In the general formula (1), p is a positive integer equal to or less than the valence of In, and the valence of In is 3. That is, p is an integer of 1 to 3. r is 3-p. From the viewpoint of handleability of the compound, it is preferable that p = 3 and r = 0.
Further preferably, X ₁ is a sulfur atom, and p = 3 and r = 0. The compound represented by the general formula (1) is a compound represented by the following formula.

Next, Y in the general formula (1) will be described.
Y represents an inorganic or organic group each independently. Hereinafter, a specific example of Y will be described.

  First, when r = 1, Y represents an inorganic or organic group. When r = 2, the plurality of Y each independently represents an inorganic or organic group. The plurality of Y may be the same group, or may be a group that is different in whole or in part. Moreover, several Y may couple | bond together and may form the ring containing In atom.

  Y is not particularly limited, and for example, a hydrogen atom, a halogen atom, a hydroxyl group, a thiol group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, substituted or Examples thereof include an unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted aryloxy group, and a substituted or unsubstituted arylthio group.

Among these, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkoxy (alkyloxy) group, a substituted or unsubstituted alkylthio group The substituted or unsubstituted aryloxy group and the substituted or unsubstituted arylthio group will be described below.
Specific examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.

Specific examples of the substituted or unsubstituted alkyl group include a straight chain having 1 to 10 carbon atoms in total such as a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-pentyl group, and an n-hexyl group. An alkyl group;
Isopropyl group, isobutyl group, sec-butyl group, isopentyl group, sec-pentyl group, 1-methylpentyl group, 2-methylpentyl group, 3-methylpentyl group, 4-methylpentyl group, 1-ethylbutyl group, 2- Ethylbutyl group, 1-methylhexyl group, 2-methylhexyl group, 3-methylhexyl group, 4-methylhexyl group, 5-methylhexyl group, 1-ethylpentyl group, 2-ethylpentyl group, 3-ethylpentyl group 1-n-propylbutyl group, 1-iso-propylbutyl group, 1-iso-propyl-2-methylpropyl group, 1-methylheptyl group, 2-methylheptyl group, 3-methylheptyl group, 4-methyl Heptyl group, 5-methylheptyl group, 6-methylheptyl group, 1-ethylhexyl group, 2-ethylhexyl group, 3 Ethylhexyl group, 4-ethylhexyl group, 1-n-propylpentyl group, 2-n-propylpentyl group, 1-iso-propylpentyl group, 2-iso-propylpentyl group, 1-n-butylbutyl group, 1-iso -Butylbutyl group, 1-sec-butylbutyl group, 1-tert-butylbutyl group, 2-tert-butylbutyl group, tert-butyl group, tert-pentyl group, 1,1-dimethylbutyl group, 1,2-dimethylbutyl group 1,3-dimethylbutyl group, 2,3-dimethylbutyl group, 1-ethyl-2-methylpropyl group, 1,1-dimethylpentyl group, 1,2-dimethylpentyl group, 1,3-dimethylpentyl group 1,4-dimethylpentyl group, 2,2-dimethylpentyl group, 2,3-dimethylpentyl group, 2,4-dimethyl Nethyl group, 3,3-dimethylpentyl group, 3,4-dimethylpentyl group, 1-ethyl-1-methylbutyl group, 1-ethyl-2-methylbutyl group, 1-ethyl-3-methylbutyl group, 2-ethyl- 1-methylbutyl group, 2-ethyl-3-methylbutyl group, 1,1-dimethylhexyl group, 1,2-dimethylhexyl group, 1,3-dimethylhexyl group, 1,4-dimethylhexyl group, 1,5- Dimethylhexyl group, 2,2-dimethylhexyl group, 2,3-dimethylhexyl group, 2,4-dimethylhexyl group, 2,5-dimethylhexyl group, 3,3-dimethylhexyl group, 3,4-dimethylhexyl Group, 3,5-dimethylhexyl group, 4,4-dimethylhexyl group, 4,5-dimethylhexyl group, 1-ethyl-2-methylpentyl group, 1-ethyl-3 -Methylpentyl group, 1-ethyl-4-methylpentyl group, 2-ethyl-1-methylpentyl group, 2-ethyl-2-methylpentyl group, 2-ethyl-3-methylpentyl group, 2-ethyl-4 -Methylpentyl group, 3-ethyl-1-methylpentyl group, 3-ethyl-2-methylpentyl group, 3-ethyl-3-methylpentyl group, 3-ethyl-4-methylpentyl group, 1-n-propyl -1-methylbutyl group, 1-n-propyl-2-methylbutyl group, 1-n-propyl-3-methylbutyl group, 1-iso-propyl-1-methylbutyl group, 1-iso-propyl-2-methylbutyl group, 1-iso-propyl-3-methylbutyl, 1,1-diethylbutyl, 1,2-diethylbutyl, 1,1,2-trimethylpropyl, 1,2,2-to Methylpropyl group, 1,1,2-trimethylbutyl group, 1,1,3-trimethylbutyl group, 1,2,3-trimethylbutyl group, 1,2,2-trimethylbutyl group, 1,3,3- Trimethylbutyl, 2,3,3-trimethylbutyl, 1,1,2-trimethylpentyl, 1,1,3-trimethylpentyl, 1,1,4-trimethylpentyl, 1,2,2- Trimethylpentyl group, 1,2,3-trimethylpentyl group, 1,2,4-trimethylpentyl group, 1,3,4-trimethylpentyl group, 2,2,3-trimethylpentyl group, 2,2,4- Trimethylpentyl group, 2,3,4-trimethylpentyl group, 1,3,3-trimethylpentyl group, 2,3,3-trimethylpentyl group, 3,3,4-trimethylpentyl group, 1,4,4- Limethylpentyl group, 2,4,4-trimethylpentyl group, 3,4,4-trimethylpentyl group, 1-ethyl-1,2-dimethylbutyl group, 1-ethyl-1,3-dimethylbutyl group, 1 -Ethyl-2,3-dimethylbutyl group, 2-ethyl-1,1-dimethylbutyl group, 2-ethyl-1,2-dimethylbutyl group, 2-ethyl-1,3-dimethylbutyl group, 2-ethyl A branched alkyl group having 3 to 10 carbon atoms in total, such as -2,3-dimethylbutyl group; and cyclopentyl group, cyclohexyl group, methylcyclopentyl group, methoxycyclopentyl group, methoxycyclohexyl group, methylcyclohexyl group, 1,2-dimethyl Such as cyclohexyl group, 1,3-dimethylcyclohexyl group, 1,4-dimethylcyclohexyl group, ethylcyclohexyl group, etc. A saturated cyclic alkyl group having 5 to 10 carbon atoms in total is exemplified.

Specific examples of the substituted or unsubstituted aryl group include aromatic hydrocarbons having a total carbon number of 20 or less, such as a phenyl group, a naphthyl group, an anthranyl group, a cyclopentadienyl group;
2-methylphenyl group, 3-methylphenyl group, 4-methylphenyl group, 2-ethylphenyl group, propylphenyl group, butylphenyl group, hexylphenyl group, cyclohexylphenyl group, octylphenyl group, 2-methyl-1- Naphthyl group, 3-methyl-1-naphthyl group, 4-methyl-1-naphthyl group, 5-methyl-1-naphthyl group, 6-methyl-1-naphthyl group, 7-methyl-1-naphthyl group, 8- Methyl-1-naphthyl group, 1-methyl-2-naphthyl group, 3-methyl-2-naphthyl group, 4-methyl-2-naphthyl group, 5-methyl-2-naphthyl group, 6-methyl-2-naphthyl group Group, 7-methyl-2-naphthyl group, 8-methyl-2-naphthyl group, 2-ethyl-1-naphthyl group, 2,3-dimethylphenyl group, 2,4-dimethylphenyl group 2,5-dimethylphenyl group, 2,6-dimethylphenyl group, 3,4-dimethylphenyl group, 3,5-dimethylphenyl group, 3,6-dimethylphenyl group, 2,3,4-trimethylphenyl group, 2,3,5-trimethylphenyl group, 2,3,6-trimethylphenyl group, 2,4,5-trimethylphenyl group, 2,4,6-trimethylphenyl group, 3,4,5-trimethylphenyl group, etc. An alkyl-substituted aryl group having a total carbon number of 20 or less;
2-methoxyphenyl group, 3-methoxyphenyl group, 4-methoxyphenyl group, 2-ethoxyphenyl group, propoxyphenyl group, butoxyphenyl group, hexyloxyphenyl group, cyclohexyloxyphenyl group, octyloxyphenyl group, 2-methoxy -1-naphthyl group, 3-methoxy-1-naphthyl group, 4-methoxy-1-naphthyl group, 5-methoxy-1-naphthyl group, 6-methoxy-1-naphthyl group, 7-methoxy-1-naphthyl group 8-methoxy-1-naphthyl group, 1-methoxy-2-naphthyl group, 3-methoxy-2-naphthyl group, 4-methoxy-2-naphthyl group, 5-methoxy-2-naphthyl group, 6-methoxy- 2-naphthyl group, 7-methoxy-2-naphthyl group, 8-methoxy-2-naphthyl group, 2-ethoxy-1-naphthyl Mono alkoxyaryl group having 10 or less substituted or total carbon number alkyloxy group is substituted unsubstituted 20 or less carbon atoms such as a group;
2,3-dimethoxyphenyl group, 2,4-dimethoxyphenyl group, 2,5-dimethoxyphenyl group, 2,6-dimethoxyphenyl group, 3,4-dimethoxyphenyl group, 3,5-dimethoxyphenyl group, 3, 6-dimethoxyphenyl group, 4,5-dimethoxy-1-naphthyl group, 4,7-dimethoxy-1-naphthyl group, 4,8-dimethoxy-1-naphthyl group, 5,8-dimethoxy-1-naphthyl group, A dialkoxyaryl group having a total carbon number of 20 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 10 or less, such as a 5,8-dimethoxy-2-naphthyl group;
2,3,4-trimethoxyphenyl group, 2,3,5-trimethoxyphenyl group, 2,3,6-trimethoxyphenyl group, 2,4,5-trimethoxyphenyl group, 2,4,6- A trialkoxyaryl group having a total carbon number of 20 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 10 or less, such as a trimethoxyphenyl group or a 3,4,5-trimethoxyphenyl group; and a chlorophenyl group or a dichlorophenyl group Halogen such as trichlorophenyl group, bromophenyl group, dibromophenyl group, iodophenyl group, fluorophenyl group, chloronaphthyl group, bromonaphthyl group, difluorophenyl group, trifluorophenyl group, tetrafluorophenyl group, pentafluorophenyl group An aryl group having a total of 20 or less carbon atoms substituted by an atom is exemplified.

  Specific examples of the substituted or unsubstituted aralkyl group include a benzyl group, a phenethyl group, a phenylpropyl group, a naphthylethyl group, and a methyl group having an aryl group as a specific example of a substituted or unsubstituted aryl group in the side chain. , Ethyl group, and propyl group.

Specific examples of the substituted or unsubstituted alkyloxy group include methoxy group, ethoxy group, n-propoxy group, iso-propoxy group, n-butoxy group, iso-butoxy group, tert-butoxy group, n-pentyloxy group, iso-pentyloxy group, n-hexyloxy group, iso-hexyloxy group, 2-ethylhexyloxy group, 3,5,5-trimethylhexyloxy group, n-heptyloxy group, n-octyloxy group, n-nonyloxy A linear or branched alkoxy group having 1 to 10 carbon atoms in total, such as a group;
A cycloalkoxy group having 5 to 10 carbon atoms in total, such as a cyclopentyloxy group and a cyclohexyloxy group;
Methoxymethoxy group, ethoxymethoxy group, ethoxyethoxy group, n-propoxymethoxy group, iso-propoxymethoxy group, n-propoxyethoxy group, iso-propoxyethoxy group, n-butoxyethoxy group, iso-butoxyethoxy group, tert- Alkoxyalkoxy having 2 to 10 carbon atoms in total such as butoxyethoxy group, n-pentyloxyethoxy group, iso-pentyloxyethoxy group, n-hexyloxyethoxy group, iso-hexyloxyethoxy group, n-heptyloxyethoxy group Groups; and aralkyloxy groups such as benzyloxy groups.

Specific examples of the substituted or unsubstituted alkylthio group include methylthio group, ethylthio group, n-propylthio group, iso-propylthio group, n-butylthio group, iso-butylthio group, sec-butylthio group, t-butylthio group, n- Pentylthio group, iso-pentylthio group, n-hexylthio group, iso-hexylthio group, 2-ethylhexylthio group, 3,5,5-trimethylhexylthio group, n-heptylthio group, n-octylthio group, n-nonylthio group, etc. A linear or branched alkylthio group having 1 to 10 carbon atoms in total;
A cycloalkylthio group having 5 to 10 carbon atoms in total, such as a cyclopentylthio group and a cyclohexylthio group;
Methoxyethylthio group, ethoxyethylthio group, n-propoxyethylthio group, iso-propoxyethylthio group, n-butoxyethylthio group, iso-butoxyethylthio group, tert-butoxyethylthio group, n-pentyloxyethyl An alkoxyalkylthio group having 2 to 10 carbon atoms in total such as a thio group, an iso-pentyloxyethylthio group, an n-hexyloxyethylthio group, an iso-hexyloxyethylthio group, and an n-heptyloxyethylthio group;
Aralkylthio groups such as benzylthio group; and methylthioethylthio group, ethylthioethylthio group, n-propylthioethylthio group, iso-propylthioethylthio group, n-butylthioethylthio group, iso-butylthioethylthio group Group, tert-butylthioethylthio group, n-pentylthioethylthio group, iso-pentylthioethylthio group, n-hexylthioethylthio group, iso-hexylthioethylthio group, n-heptylthioethylthio group, etc. And an alkylthioalkylthio group having 2 to 10 carbon atoms in total.

Specific examples of the substituted or unsubstituted aryloxy group include a phenyloxy group, a naphthyloxy group, an anthranyloxy group, a 2-methylphenyloxy group, a 3-methylphenyloxy group, a 4-methylphenyloxy group, and 2-ethyl. Phenyloxy group, propylphenyloxy group, butylphenyloxy group, hexylphenyloxy group, cyclohexylphenyloxy group, octylphenyloxy group, 2-methyl-1-naphthyloxy group, 3-methyl-1-naphthyloxy group, 4 -Methyl-1-naphthyloxy group, 5-methyl-1-naphthyloxy group, 6-methyl-1-naphthyloxy group, 7-methyl-1-naphthyloxy group, 8-methyl-1-naphthyloxy group, 1 -Methyl-2-naphthyloxy group, 3-methyl-2-naphthyloxy group, 4-methyl Ru-2-naphthyloxy group, 5-methyl-2-naphthyloxy group, 6-methyl-2-naphthyloxy group, 7-methyl-2-naphthyloxy group, 8-methyl-2-naphthyloxy group, 2- Ethyl-1-naphthyloxy group, 2,3-dimethylphenyloxy group, 2,4-dimethylphenyloxy group, 2,5-dimethylphenyloxy group, 2,6-dimethylphenyloxy group, 3,4-dimethylphenyl Oxy group, 3,5-dimethylphenyloxy group, 3,6-dimethylphenyloxy group, 2,3,4-trimethylphenyloxy group, 2,3,5-trimethylphenyloxy group, 2,3,6-trimethyl Phenyloxy group, 2,4,5-trimethylphenyloxy group, 2,4,6-trimethylphenyloxy group, 3,4,5-trimethylphenyl Alkoxy unsubstituted or alkyl-substituted aryloxy group having a total carbon number of 20 or less, such groups;
2-methoxyphenyloxy group, 3-methoxyphenyloxy group, 4-methoxyphenyloxy group, 2-ethoxyphenyloxy group, propoxyphenyloxy group, butoxyphenyloxy group, hexyloxyphenyloxy group, cyclohexyloxyphenyloxy group, Octyloxyphenyloxy group, 2-methoxy-1-naphthyloxy group, 3-methoxy-1-naphthyloxy group, 4-methoxy-1-naphthyloxy group, 5-methoxy-1-naphthyloxy group, 6-methoxy- 1-naphthyloxy group, 7-methoxy-1-naphthyloxy group, 8-methoxy-1-naphthyloxy group, 1-methoxy-2-naphthyloxy group, 3-methoxy-2-naphthyloxy group, 4-methoxy- 2-naphthyloxy group, 5-methoxy-2-naphthyloxy group A substituent having 10 or less carbon atoms such as a group, 6-methoxy-2-naphthyloxy group, 7-methoxy-2-naphthyloxy group, 8-methoxy-2-naphthyloxy group, 2-ethoxy-1-naphthyloxy group, or the like; A monoalkoxyaryloxy group having a total carbon number of 20 or less substituted by an unsubstituted alkyloxy group;
2,3-dimethoxyphenyloxy group, 2,4-dimethoxyphenyloxy group, 2,5-dimethoxyphenyloxy group, 2,6-dimethoxyphenyloxy group, 3,4-dimethoxyphenyloxy group, 3,5-dimethoxy Phenyloxy group, 3,6-dimethoxyphenyloxy group, 4,5-dimethoxy-1-naphthyloxy group, 4,7-dimethoxy-1-naphthyloxy group, 4,8-dimethoxy-1-naphthyloxy group, 5 , 8-dimethoxy-1-naphthyloxy group, 5,8-dimethoxy-2-naphthyloxy group and the like substituted or unsubstituted alkyloxy group substituted with a total of 20 or less dialkoxyaryloxy Group;
2,3,4-trimethoxyphenyloxy group, 2,3,5-trimethoxyphenyloxy group, 2,3,6-trimethoxyphenyloxy group, 2,4,5-trimethoxyphenyloxy group, 2, A trialkoxyaryloxy group having a total carbon number of 20 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 10 or less, such as a 4,6-trimethoxyphenyloxy group or a 3,4,5-trimethoxyphenyloxy group Chlorophenyloxy group, dichlorophenyloxy group, trichlorophenyloxy group, bromophenyloxy group, dibromophenyloxy group, iodophenyloxy group, fluorophenyloxy group, chloronaphthyloxy group, bromonaphthyloxy group, difluorophenyloxy group, Trifluorophenyloxy group, tetrafluoro Phenyloxy group, a halogen atom such as a pentafluorophenyl group and the aryloxy group having not more than a total carbon number of 20 has been substituted.

Specific examples of the substituted or unsubstituted arylthio group include a phenylthio group, a naphthylthio group, an anthranylthio group, a 2-methylphenylthio group, a 3-methylphenylthio group, a 4-methylphenylthio group, and a 2-ethylphenylthio group. Propylphenylthio group, butylphenylthio group, hexylphenylthio group, cyclohexylphenylthio group, octylphenylthio group, 2-methyl-1-naphthylthio group, 3-methyl-1-naphthylthio group, 4-methyl-1- Naphthylthio group, 5-methyl-1-naphthylthio group, 6-methyl-1-naphthylthio group, 7-methyl-1-naphthylthio group, 8-methyl-1-naphthylthio group, 1-methyl-2-naphthylthio group, 3- Methyl-2-naphthylthio group, 4-methyl-2-naphthylthio group, 5-methyl-2-na Tilthio group, 6-methyl-2-naphthylthio group, 7-methyl-2-naphthylthio group, 8-methyl-2-naphthylthio group, 2-ethyl-1-naphthylthio group, 2,3-dimethylphenylthio group, 2, 4-dimethylphenylthio group, 2,5-dimethylphenylthio group, 2,6-dimethylphenylthio group, 3,4-dimethylphenylthio group, 3,5-dimethylphenylthio group, 3,6-dimethylphenylthio group Group, 2,3,4-trimethylphenylthio group, 2,3,5-trimethylphenylthio group, 2,3,6-trimethylphenylthio group, 2,4,5-trimethylphenylthio group, 2,4, An unsubstituted or alkyl-substituted arylthio group having a total carbon number of 20 or less, such as a 6-trimethylphenylthio group or a 3,4,5-trimethylphenylthio group;
2-methoxyphenylthio group, 3-methoxyphenylthio group, 4-methoxyphenylthio group, 2-ethoxyphenylthio group, propoxyphenylthio group, butoxyphenylthio group, hexyloxyphenylthio group, cyclohexyloxyphenylthio group, Octyloxyphenylthio group, 2-methoxy-1-naphthylthio group, 3-methoxy-1-naphthylthio group, 4-methoxy-1-naphthylthio group, 5-methoxy-1-naphthylthio group, 6-methoxy-1-naphthylthio group 7-methoxy-1-naphthylthio group, 8-methoxy-1-naphthylthio group, 1-methoxy-2-naphthylthio group, 3-methoxy-2-naphthylthio group, 4-methoxy-2-naphthylthio group, 5-methoxy- 2-naphthylthio group, 6-methoxy-2-naphthylthio group, Mono having no more than 20 carbon atoms substituted by a substituted or unsubstituted alkyloxy group having not more than 10 carbon atoms such as -methoxy-2-naphthylthio group, 8-methoxy-2-naphthylthio group, 2-ethoxy-1-naphthylthio group, etc. An alkoxyarylthio group;
2,3-dimethoxyphenylthio group, 2,4-dimethoxyphenylthio group, 2,5-dimethoxyphenylthio group, 2,6-dimethoxyphenylthio group, 3,4-dimethoxyphenylthio group, 3,5-dimethoxy Phenylthio group, 3,6-dimethoxyphenylthio group, 4,5-dimethoxy-1-naphthylthio group, 4,7-dimethoxy-1-naphthylthio group, 4,8-dimethoxy-1-naphthylthio group, 5,8- A dialkoxyarylthio group having a total carbon number of 20 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 10 or less, such as a dimethoxy-1-naphthylthio group or a 5,8-dimethoxy-2-naphthylthio group;
2,3,4-trimethoxyphenylthio group, 2,3,5-trimethoxyphenylthio group, 2,3,6-trimethoxyphenylthio group, 2,4,5-trimethoxyphenylthio group, 2, A trialkoxyarylthio group having a total carbon number of 20 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 10 or less, such as a 4,6-trimethoxyphenylthio group or a 3,4,5-trimethoxyphenylthio group. Chlorophenylthio group, dichlorophenylthio group, trichlorophenylthio group, bromophenylthio group, dibromophenylthio group, iodophenylthio group, fluorophenylthio group, chloronaphthylthio group, bromonaphthylthio group, difluorophenylthio group, Trifluorophenylthio group, tetrafluorophenylthio group, pentafluorophene Total of 20 or less arylthio group such as carbon halogen atom-substituted, such as thio group. Y is not limited to these.

Preferred examples of such Y are shown below.
Preferable examples include a hydrogen atom.

Moreover, among the preferable examples of Y, a chlorine atom, a bromine atom, and an iodine atom are mentioned as a halogen atom.
As a substituted or unsubstituted alkyl group, a linear alkyl group having 1 to 6 carbon atoms in total, such as a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-pentyl group, and an n-hexyl group;
Isopropyl group, isobutyl group, sec-butyl group, isopentyl group, sec-pentyl group, 1-methylpentyl group, 2-methylpentyl group, 3-methylpentyl group, 4-methylpentyl group, 1-ethylbutyl group, 2- Total carbon number of ethylbutyl group, tert-butyl group, tert-pentyl group, 1,1-dimethylbutyl group, 1,2-dimethylbutyl group, 1,3-dimethylbutyl group, 2,3-dimethylbutyl group, etc. A branched alkyl group having 3 to 6 carbon atoms; and a saturated cyclic alkyl group having 5 to 6 carbon atoms in total such as a cyclopentyl group and a cyclohexyl group.

An aromatic hydrocarbon having a total carbon number of 12 or less, such as a phenyl group, a naphthyl group, a cyclopentadienyl group, as a substituted or unsubstituted aryl group;
2-methylphenyl group, 3-methylphenyl group, 4-methylphenyl group, 2-ethylphenyl group, propylphenyl group, butylphenyl group, 2,3-dimethylphenyl group, 2,4-dimethylphenyl group, 2, 5-dimethylphenyl group, 2,6-dimethylphenyl group, 3,4-dimethylphenyl group, 3,5-dimethylphenyl group, 3,6-dimethylphenyl group, 2,3,4-trimethylphenyl group, 2, 3,5-trimethylphenyl group, 2,3,6-trimethylphenyl group, 2,4,5-trimethylphenyl group, 2,4,6-trimethylphenyl group, 3,4,5-trimethylphenyl group, etc. An alkyl-substituted aryl group having 12 or less carbon atoms;
Substituted or unsubstituted alkyloxy groups having 6 or less carbon atoms such as 2-methoxyphenyl group, 3-methoxyphenyl group, 4-methoxyphenyl group, 2-ethoxyphenyl group, propoxyphenyl group, butoxyphenyl group, etc. A monoalkoxyaryl group having a total carbon number of 12 or less;
2,3-dimethoxyphenyl group, 2,4-dimethoxyphenyl group, 2,5-dimethoxyphenyl group, 2,6-dimethoxyphenyl group, 3,4-dimethoxyphenyl group, 3,5-dimethoxyphenyl group, 3, A dialkoxyaryl group having a total carbon number of 12 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 6 or less such as 6-dimethoxyphenyl group; and a chlorophenyl group, a dichlorophenyl group, a trichlorophenyl group, a bromophenyl group, a dibromo Total carbon number of 12 or less substituted with halogen atoms such as phenyl group, iodophenyl group, fluorophenyl group, chloronaphthyl group, bromonaphthyl group, difluorophenyl group, trifluorophenyl group, tetrafluorophenyl group, pentafluorophenyl group An aryl group is mentioned.

  Examples of the substituted or unsubstituted aralkyl group include aralkyl groups having a total carbon number of 12 or less, such as a benzyl group, a phenethyl group, and a phenylpropyl group.

As substituted or unsubstituted alkyloxy groups, methoxy group, ethoxy group, n-propoxy group, iso-propoxy group, n-butoxy group, iso-butoxy group, tert-butoxy group, n-pentyloxy group, iso-pentyl A linear or branched alkoxy group having 1 to 6 carbon atoms in total, such as an oxy group, an n-hexyloxy group, an iso-hexyloxy group;
A cycloalkoxy group having 5 or 6 carbon atoms in total such as cyclopentyloxy group, cyclohexyloxy group; and methoxymethoxy group, ethoxymethoxy group, ethoxyethoxy group, n-propoxymethoxy group, iso-propoxymethoxy group, n-propoxyethoxy group, Examples thereof include alkoxyalkoxy groups having 2 to 6 carbon atoms in total, such as an iso-propoxyethoxy group, an n-butoxyethoxy group, an iso-butoxyethoxy group, and a tert-butoxyethoxy group.

As the substituted or unsubstituted alkylthio group, methylthio group, ethylthio group, n-propylthio group, iso-propylthio group, n-butylthio group, iso-butylthio group, sec-butylthio group, t-butylthio group, n-pentylthio group, a linear or branched alkylthio group having 1 to 6 carbon atoms in total, such as an iso-pentylthio group, an n-hexylthio group, an iso-hexylthio group;
A cycloalkylthio group having 5 or 6 carbon atoms in total such as a cyclopentylthio group and a cyclohexylthio group;
Total carbon number 2 such as methoxyethylthio group, ethoxyethylthio group, n-propoxyethylthio group, iso-propoxyethylthio group, n-butoxyethylthio group, iso-butoxyethylthio group, tert-butoxyethylthio group 6 or less alkoxyalkylthio group; and methylthioethylthio group, ethylthioethylthio group, n-propylthioethylthio group, iso-propylthioethylthio group, n-butylthioethylthio group, iso-butylthioethylthio group And an alkylthioalkylthio group having 2 to 6 carbon atoms in total, such as a tert-butylthioethylthio group.

As substituted or unsubstituted aryloxy group, phenyloxy group, naphthyloxy group, 2-methylphenyloxy group, 3-methylphenyloxy group, 4-methylphenyloxy group, 2-ethylphenyloxy group, propylphenyloxy group Butylphenyloxy group, hexylphenyloxy group, cyclohexylphenyloxy group, 2,4-dimethylphenyloxy group, 2,5-dimethylphenyloxy group, 2,6-dimethylphenyloxy group, 3,4-dimethylphenyloxy group Group, 3,5-dimethylphenyloxy group, 3,6-dimethylphenyloxy group, 2,3,4-trimethylphenyloxy group, 2,3,5-trimethylphenyloxy group, 2,3,6-trimethylphenyl Oxy group, 2,4,5-trimethylphenyloxy group, 2, , 6-trimethylphenyl group, 3,4,5-trimethylphenyl unsubstituted or alkyl-substituted aryloxy group having a total carbon number of 12 or less, such as oxy group;
2-methoxyphenyloxy group, 3-methoxyphenyloxy group, 4-methoxyphenyloxy group, 2-ethoxyphenyloxy group, propoxyphenyloxy group, butoxyphenyloxy group, hexyloxyphenyloxy group, cyclohexyloxyphenyloxy group, etc. A monoalkoxyaryloxy group having a total carbon number of 12 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 6 or less;
2,3-dimethoxyphenyloxy group, 2,4-dimethoxyphenyloxy group, 2,5-dimethoxyphenyloxy group, 2,6-dimethoxyphenyloxy group, 3,4-dimethoxyphenyloxy group, 3,5-dimethoxy A dialkoxyaryloxy group having a total carbon number of 12 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 6 or less, such as a phenyloxy group or a 3,6-dimethoxyphenyloxy group; and a chlorophenyloxy group or a dichlorophenyloxy group , Trichlorophenyloxy group, bromophenyloxy group, dibromophenyloxy group, iodophenyloxy group, fluorophenyloxy group, chloronaphthyloxy group, bromonaphthyloxy group, difluorophenyloxy group, trifluorophenyloxy group, tetrafluorophenyl Niruokishi group, a halogen atom such as a pentafluorophenyl group and the aryloxy group having not more than a total carbon number of 12 has been substituted.

As a substituted or unsubstituted arylthio group, phenylthio group, naphthylthio group, 2-methylphenylthio group, 3-methylphenylthio group, 4-methylphenylthio group, 2-ethylphenylthio group, propylphenylthio group, butylphenyl Thio group, hexylphenylthio group, cyclohexylphenylthio group, 2,4-dimethylphenylthio group, 2,5-dimethylphenylthio group, 2,6-dimethylphenylthio group, 3,4-dimethylphenylthio group, 3 , 5-dimethylphenylthio group, 3,6-dimethylphenylthio group, 2,3,4-trimethylphenylthio group, 2,3,5-trimethylphenylthio group, 2,3,6-trimethylphenylthio group, 2,4,5-trimethylphenylthio group, 2,4,6-trimethylphenylthio group, 3,4, - unsubstituted or alkyl-substituted arylthio group having a total carbon number of 12 or less, such as trimethylphenyl thio group;
2-methoxyphenylthio group, 3-methoxyphenylthio group, 4-methoxyphenylthio group, 2-ethoxyphenylthio group, propoxyphenylthio group, butoxyphenylthio group, hexyloxyphenylthio group, cyclohexyloxyphenylthio group, etc. A monoalkoxyarylthio group having a total carbon number of 12 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 6 or less;
2,3-dimethoxyphenylthio group, 2,4-dimethoxyphenylthio group, 2,5-dimethoxyphenylthio group, 2,6-dimethoxyphenylthio group, 3,4-dimethoxyphenylthio group, 3,5-dimethoxy Phenylthio group, 3,6-dimethoxyphenylthio group, 4,5-dimethoxy-1-naphthylthio group, 4,7-dimethoxy-1-naphthylthio group, 4,8-dimethoxy-1-naphthylthio group, 5,8- A dialkoxyarylthio group having a total carbon number of 12 or less substituted by a substituted or unsubstituted alkyloxy group having a carbon number of 6 or less, such as a dimethoxy-1-naphthylthio group or a 5,8-dimethoxy-2-naphthylthio group;
Chlorophenylthio group, dichlorophenylthio group, trichlorophenylthio group, bromophenylthio group, dibromophenylthio group, iodophenylthio group, fluorophenylthio group, chloronaphthylthio group, bromonaphthylthio group, difluorophenylthio group, trifluoro Examples thereof include arylthio groups having a total carbon number of 12 or less substituted with halogen atoms such as a phenylthio group, a tetrafluorophenylthio group, and a pentafluorophenylthio group.

More preferred examples of Y are shown below.
Preferable examples of Y include a hydrogen atom.
Moreover, a chlorine atom and a bromine atom are mentioned as a halogen atom.

  Examples of the substituted or unsubstituted alkyl group include linear or branched alkyl groups having 1 to 3 carbon atoms in total, such as a methyl group, an ethyl group, and an iso-propyl group.

An aromatic hydrocarbon having a total carbon number of 12 or less, such as a phenyl group, a naphthyl group, a cyclopentadienyl group, as a substituted or unsubstituted aryl group;
2-methylphenyl group, 3-methylphenyl group, 4-methylphenyl group, 2-ethylphenyl group, propylphenyl group, 2,3-dimethylphenyl group, 2,4-dimethylphenyl group, 2,5-dimethylphenyl An alkyl-substituted aryl group having a total carbon number of 9 or less, such as a group, 2,6-dimethylphenyl group, 3,4-dimethylphenyl group, 3,5-dimethylphenyl group, 3,6-dimethylphenyl group;
Total carbon number of 9 or less substituted by a substituted or unsubstituted alkyloxy group having 3 or less carbon atoms such as 2-methoxyphenyl group, 3-methoxyphenyl group, 4-methoxyphenyl group, 2-ethoxyphenyl group, propoxyphenyl group, etc. And monoaryloxyaryl groups having a total carbon number of 12 or less substituted with halogen atoms such as chlorophenyl group, dichlorophenyl group, trichlorophenyl group, bromophenyl group, dibromophenyl group, chloronaphthyl group, bromonaphthyl group, etc. .

  Examples of the substituted or unsubstituted aralkyl group include aralkyl groups having a total carbon number of 9 or less, such as a benzyl group, a phenethyl group, and a phenylpropyl group.

As a substituted or unsubstituted alkyloxy group, a linear or branched alkoxy group having 1 to 3 carbon atoms in total such as a methoxy group, an ethoxy group, and an iso-propoxy group; and a total carbon such as a cyclopentyloxy group and a cyclohexyloxy group The cycloalkoxy group of number 5 or 6 is mentioned.

As a substituted or unsubstituted alkylthio group, a linear or branched alkylthio group having 1 to 3 carbon atoms in total such as a methylthio group, an ethylthio group, an n-propylthio group, an iso-propylthio group;
A cycloalkylthio group having 5 or 6 carbon atoms in total such as a cyclopentylthio group and a cyclohexylthio group; and a methylthioethylthio group, an ethylthioethylthio group, an n-propylthioethylthio group, an iso-propylthioethylthio group, an n- Examples thereof include alkylthioalkylthio groups having 2 to 6 carbon atoms in total, such as a butylthioethylthio group, an iso-butylthioethylthio group, and a tert-butylthioethylthio group.

As a substituted or unsubstituted aryloxy group, phenyloxy group, naphthyloxy group, 2-methylphenyloxy group, 3-methylphenyloxy group, 4-methylphenyloxy group, 2-ethylphenyloxy group, propylphenyloxy group 2,4-dimethylphenyloxy group, 2,5-dimethylphenyloxy group, 2,6-dimethylphenyloxy group, 3,4-dimethylphenyloxy group, 3,5-dimethylphenyloxy group, 3,6- An unsubstituted or alkyl-substituted aryloxy group having a total carbon number of 9 or less such as a dimethylphenyloxy group;
Substituted or unsubstituted alkyloxy groups having 3 or less carbon atoms such as 2-methoxyphenyloxy group, 3-methoxyphenyloxy group, 4-methoxyphenyloxy group, 2-ethoxyphenyloxy group and propoxyphenyloxy group were substituted. A monoalkoxyaryloxy group having a total carbon number of 9 or less; and halogen atoms such as a chlorophenyloxy group, a dichlorophenyloxy group, a trichlorophenyloxy group, a bromophenyloxy group, a dibromophenyloxy group, a chloronaphthyloxy group, and a bromonaphthyloxy group Examples include substituted aryloxy groups having 12 or less total carbon atoms.

As a substituted or unsubstituted arylthio group, phenylthio group, 2-methylphenylthio group, 3-methylphenylthio group, 4-methylphenylthio group, 2-ethylphenylthio group, propylphenylthio group, 2,4-dimethyl Phenylthio group, 2,5-dimethylphenylthio group, 2,6-dimethylphenylthio group, 3,4-dimethylphenylthio group, 3,5-dimethylphenylthio group, 3,6-dimethylphenylthio group, etc. An unsubstituted or alkyl-substituted arylthio group having a total carbon number of 9 or less;
Substituted or unsubstituted alkyloxy groups having 3 or less carbon atoms such as 2-methoxyphenylthio group, 3-methoxyphenylthio group, 4-methoxyphenylthio group, 2-ethoxyphenylthio group, propoxyphenylthio group A monoalkoxyarylthio group having a total carbon number of 9 or less; and halogen atoms such as chlorophenylthio group, dichlorophenylthio group, trichlorophenylthio group, bromophenylthio group, dibromophenylthio group, chloronaphthylthio group, bromonaphthylthio group A substituted arylthio group having a total carbon number of 12 or less can be mentioned.

When Y does not form a ring, specific examples of Y include a methylthio group, an ethylthio group, a propylthio group, and an isopropylthio group, that is, an alkylthio group having 1 to 3 carbon atoms.
When a ring is formed, examples of the alkylenedithio chain forming the ring include a methylenedithio group, a 1,2-ethylenedithio group, a 1,3-propylenedithio group, that is, an alkylenedithio group having 1 to 3 carbon atoms. It is done. Specifically, the ring containing In is a 4-membered ring to a 6-membered ring.

  More specifically, when not forming a ring, Y is a methylthio group, and when forming a ring, the alkylenedithio group forming the ring is an ethylenedithio group.

Next, a method for producing the thietane compound represented by the general formula (1) will be described.
The thietane compound represented by the general formula (1) is typically a hydroxy compound having an In halide represented by the following general formula (2) and a thietane group represented by the following general formula (3): Produced by reaction with thiol compounds.

(In the general formula (2), p, r and Y are the same as p, r and Y in the general formula (1), respectively, and W represents a halogen atom.)

(In the general formula (3), X ₁ is the same as X ₁ in the general formula (1).)

The compound represented by the general formula (2) is available as an industrial raw material or a research reagent.
Further, the compound represented by the general formula (3) is a known compound, and is produced, for example, according to the method described in Patent Document 2 (Japanese Patent Application Laid-Open No. 2003-327583).

  The reaction between the In halide represented by the general formula (2) and the hydroxy compound or thiol compound having a thietane group represented by the general formula (3) may be performed without a solvent, or The reaction may be performed in the presence of an inert solvent.

Such a solvent is not particularly limited as long as it is inert to the reaction, and is a hydrocarbon solvent such as petroleum ether, hexane, benzene, toluene, xylene, mesitylene;
Ether solvents such as diethyl ether, tetrahydrofuran, diethylene glycol dimethyl ether;
Ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone;
Ester solvents such as ethyl acetate, butyl acetate, amyl acetate;
Chlorine-containing solvents such as methylene chloride, chloroform, chlorobenzene, dichlorobenzene;
Aprotic polar solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, N, N-dimethylimidazolidinone, dimethyl sulfoxide;
Sulfur-containing solvents such as tetrahydrothiophene, thiophene, sulfolane, trimethylene sulfide, diethyl sulfide, di-n-propyl sulfide, di-t-butyl sulfide, 3-mercaptothietane, bis (2-mercaptoethyl) sulfide; and Examples include water.

  The reaction temperature of the compound represented by the general formula (2) and the compound represented by the general formula (3) is not particularly limited, but is usually in the range of −78 ° C. or higher and 200 ° C. or lower, preferably , −78 ° C. or more and 100 ° C. or less.

  The reaction time is influenced by the reaction temperature, but is usually from several minutes to 100 hours.

  Use of the compound represented by the general formula (2) and the compound represented by the general formula (3) in the reaction of the compound represented by the general formula (2) and the compound represented by the general formula (3). Although the amount is not particularly limited, the use of the compound represented by the general formula (3) is usually used with respect to 1 mol of the halogen atom contained in the compound represented by the general formula (2). The amount is 0.01 mol or more and 100 mol or less. Preferably, it is 0.1 mol or more and 50 mol or less, More preferably, it is 0.5 mol or more and 20 mol or less.

In carrying out the reaction between the compound represented by the general formula (2) and the compound represented by the general formula (3), a basic compound is used as a scavenger for the generated hydrogen halide in order to carry out the reaction efficiently. It is preferable.
Examples of such basic compounds include sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium carbonate, potassium carbonate, lithium carbonate, sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, magnesium hydroxide, and calcium hydroxide. Illustrative are inorganic bases; and organic bases such as pyridine, triethylamine, dimethylaniline, diethylaniline, 1,8-diazabicyclo [5,4,0] -7-undecene.

Next, the polymerizable composition of the present invention will be described.
The polymerizable composition of the present invention contains a thietane compound represented by the general formula (1). This polymerizable composition is used, for example, as a material for optical components.

  The polymerizable composition of the present invention may contain one type of compound or a plurality of different compounds as the thietane compound shown in the general formula (1).

  Further, the thietane compound represented by the general formula (1) is a polymerizable compound. For this reason, the polymeric compound in the polymeric composition of this invention may be comprised from the thietane compound shown to the said General formula (1).

  Further, the polymerizable compound in the polymerizable composition of the present invention may contain other polymerizable compounds in addition to the thietane compound represented by the general formula (1).

  Examples of other polymerizable compounds include various known polymerizable monomers or polymerizable oligomers, such as (meth) acrylic acid ester compounds, vinyl compounds, epoxy compounds, episulfide compounds, oxetane compounds, and thietane compounds. .

  The content of the compound represented by the general formula (1) in the total weight of the polymerizable compound contained in the polymerizable composition of the present invention is not particularly limited, but is usually 10% by weight or more. From the viewpoint of increasing the refractive index, it is preferably 30% by weight or more, more preferably 50% by weight or more, and still more preferably 70% by weight or more.

  In addition, since components other than the compound represented by the general formula (1) often cause a decrease in the refractive index of the resin using the polymerizable composition, it is polymerizable from the viewpoint of obtaining a resin having a high refractive index. The content of the compound represented by the general formula (1) in the total weight of the compound is preferably 10% by weight or more.

Moreover, the polymerizable composition in the present invention may further contain a thiol compound.
Hereinafter, the thiol compound will be described with specific examples.

  The thiol compound used in the polymerizable composition is a compound containing one or more thiol groups (SH groups) in the molecule. As the thiol compound, for example, a compound having any structure can be used as long as it is compatible with the compound represented by the general formula (1).

  As a thiol compound, specifically, as a monovalent thiol compound, methyl mercaptan, ethyl mercaptan, propyl mercaptan, butyl mercaptan, octyl mercaptan, dodecyl mercaptan, tert-dodecyl mercaptan, hexadecyl mercaptan, octadecyl mercaptan, cyclohexyl mercaptan, Benzyl mercaptan, ethylphenyl mercaptan, 2-mercaptomethyl-1,3-dithiolane, 2-mercaptomethyl-1,4-dithiane, 1-mercapto-2,3-epithiopropane, 1-mercaptomethylthio-2,3- Epithiopropane, 1-mercaptoethylthio-2,3-epithiopropane, 3-mercaptothietane, 2-mercaptothietane, 3-mercaptomethylthiothietane, 2- Aliphatic mercaptan compounds such as lucaptomethylthiothietane, 3-mercaptoethylthiothietane, 2-mercaptoethylthiothietane, aromatic mercaptan compounds such as thiophenol, mercaptotoluene, 2-mercaptoethanol, 3-mercapto- In addition to mercapto groups such as 1,2-propanediol, compounds containing a hydroxy group can be mentioned.

Examples of the polyvalent thiol (polythiol) compound include 1,1-methanedithiol, 1,2-ethanedithiol, 1,1-propanedithiol, 1,2-propanedithiol, 1,3-propanedithiol, 2,2 -Propanedithiol, 1,6-hexanedithiol, 1,2,3-propanetrithiol, 1,1-cyclohexanedithiol, 1,2-cyclohexanedithiol, 2,2-dimethylpropane-1,3-dithiol, 3, 4-dimethoxybutane-1,2-dithiol, 2-methylcyclohexane-2,3-dithiol, 1,1-bis (mercaptomethyl) cyclohexane, bis (2-mercaptoethyl ester) thiomalate, 2,3-dimercapto- 1-propanol (2-mercaptoacetate), 2,3-dimercapto -1-propanol (3-mercaptopropionate), diethylene glycol bis (2-mercaptoacetate), diethylene glycol bis (3-mercaptopropionate), 1,2-dimercaptopropyl methyl ether, 2,3-dimercaptopropyl Methyl ether, 2,2-bis (mercaptomethyl) -1,3-propanedithiol, bis (2-mercaptoethyl) ether, ethylene glycol bis (2-mercaptoacetate), ethylene glycol bis (3-mercaptopropionate) , Trimethylolpropane bis (2-mercaptoacetate), trimethylolpropane bis (3-mercaptopropionate), pentaerythritol tetrakis (2-mercaptoacetate), pentaerythritol tetrakis 3-mercaptopropionate), tetrakis (mercaptomethyl) methane, 1,1,1,1- tetrakis (mercaptomethyl) aliphatic polythiol compounds such as methane;
1,2-dimercaptobenzene, 1,3-dimercaptobenzene, 1,4-dimercaptobenzene, 1,2-bis (mercaptomethyl) benzene, 1,3-bis (mercaptomethyl) benzene, 1,4- Bis (mercaptomethyl) benzene, 1,2-bis (mercaptoethyl) benzene, 1,3-bis (mercaptoethyl) benzene, 1,4-bis (mercaptoethyl) benzene, 1,2,3-trimercaptobenzene, 1,2,4-trimercaptobenzene, 1,3,5-trimercaptobenzene, 1,2,3-tris (mercaptomethyl) benzene, 1,2,4-tris (mercaptomethyl) benzene, 1,3,3 5-tris (mercaptomethyl) benzene, 1,2,3-tris (mercaptoethyl) benzene, 1,2,4-tris (mer Puttoethyl) benzene, 1,3,5-tris (mercaptoethyl) benzene, 2,5-toluenedithiol, 3,4-toluenedithiol, 1,3-di (p-methoxyphenyl) propane-2,2-dithiol, Aromatic polythiol compounds such as 1,3-diphenylpropane-2,2-dithiol, phenylmethane-1,1-dithiol, 2,4-di (p-mercaptophenyl) pentane;
1,2-bis (mercaptoethylthio) benzene, 1,3-bis (mercaptoethylthio) benzene, 1,4-bis (mercaptoethylthio) benzene, 1,2,3-tris (mercaptomethylthio) benzene, 1 , 2,4-Tris (mercaptomethylthio) benzene, 1,3,5-tris (mercaptomethylthio) benzene, 1,2,3-tris (mercaptoethylthio) benzene, 1,2,4-tris (mercaptoethylthio) ) Aromatic polythiol compounds containing sulfur atoms in addition to mercapto groups such as benzene, 1,3,5-tris (mercaptoethylthio) benzene, and their nuclear alkylated products;
Bis (mercaptomethyl) sulfide, bis (mercaptomethyl) disulfide, bis (mercaptoethyl) sulfide, bis (mercaptoethyl) disulfide, bis (mercaptopropyl) sulfide, bis (mercaptomethylthio) methane, bis (2-mercaptoethylthio) Methane, bis (3-mercaptopropylthio) methane, 1,2-bis (mercaptomethylthio) ethane, 1,2-bis (2-mercaptoethylthio) ethane, 1,2-bis (3-mercaptopropyl) ethane, 1,3-bis (mercaptomethylthio) propane, 1,3-bis (2-mercaptoethylthio) propane, 1,3-bis (3-mercaptopropylthio) propane, 1,2,3-tris (mercaptomethylthio) Propane, 1,2,3-tris (2- Lucaptoethylthio) propane, 1,2,3-tris (3-mercaptopropylthio) propane, 1,2-bis [(2-mercaptoethyl) thio] -3-mercaptopropane, 4,8-dimercaptomethyl -1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 5,7-dimercaptomethyl-1 , 11-dimercapto-3,6,9-trithiaundecane, tetrakis (mercaptomethylthiomethyl) methane, tetrakis (2-mercaptoethylthiomethyl) methane, tetrakis (3-mercaptopropylthiomethyl) methane, bis (2,3 -Dimercaptopropyl) sulfide, bis (1,3-dimercaptopropyl) sulfide, 2, Dimercapto-1,4-dithiane, 2,5-bis (mercaptomethyl) -1,4-dithiane, 2,5-dimercaptomethyl-2,5-dimethyl-1,4-dithiane, bis (mercaptomethyl) Aliphatic polythiol compounds containing sulfur atoms in addition to mercapto groups such as disulfide, bis (mercaptoethyl) disulfide, bis (mercaptopropyl) disulfide, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, and the like Thioglycolic acid and mercaptopropionic acid esters;
Hydroxymethyl sulfide bis (2-mercaptoacetate), hydroxymethyl sulfide bis (3-mercaptopropionate), hydroxyethyl sulfide bis (2-mercaptoacetate), hydroxyethyl sulfide bis (3-mercaptopropionate), hydroxypropyl Sulfide bis (2-mercaptoacetate), hydroxypropyl sulfide bis (3-mercaptopropionate), hydroxymethyl disulfide bis (2-mercaptoacetate), hydroxymethyl disulfide bis (3-mercaptopropionate), hydroxyethyl disulfide bis (2-mercaptoacetate), hydroxyethyl disulfide bis (3-mercaptopropionate), hydroxypropyl disulfide bis 2-mercaptoacetate), hydroxypropyl disulfide bis (3-mercaptopropionate), 2-mercaptoethyl ether bis (2-mercaptoacetate), 2-mercaptoethyl ether bis (3-mercaptopropionate), 1,4 Dithian-2,5-diol bis (2-mercaptoacetate), 1,4-dithian-2,5-diol bis (3-mercaptopropionate), thiodiglycolic acid bis (2-mercaptoethyl ester), thiodi Propionic acid bis (2-mercaptoethyl ester), 4,4-thiodibutyric acid bis (2-mercaptoethyl ester), dithiodiglycolic acid bis (2-mercaptoethyl ester), dithiodipropionic acid bis (2-mercaptoethyl ester) ), 4,4-dithio Bis (2-mercaptoethyl ester) dibutyrate, bis (2,3-dimercaptopropyl ester) thiodiglycolate, bis (2,3-dimercaptopropyl ester) thiodipropionate, bis (2, An aliphatic polythiol compound containing a sulfur atom and an ester bond in addition to a mercapto group such as 3-dimercaptopropyl ester) and bis (2,3-dimercaptopropyl ester) dithiodipropionate;
Heterocyclic compounds containing sulfur atoms in addition to mercapto groups such as 3,4-thiophenedithiol and 2,5-dimercapto-1,3,4-thiadiazole;
Glycerin di (mercaptoacetate), 1-hydroxy-4-mercaptocyclohexane, 2,4-dimercaptophenol, 2-mercaptohydroquinone, 4-mercaptophenol, 3,4-dimercapto-2-propanol, 1,3-dimercapto- 2-propanol, 2,3-dimercapto-1-propanol, 1,2-dimercapto-1,3-butanediol, pentaerythritol tris (3-mercaptopropionate), pentaerythritol mono (3-mercaptopropionate) Pentaerythritol bis (3-mercaptopropionate), pentaerythritol tris (thioglycolate), dipentaerythritol pentakis (3-mercaptopropionate), hydroxymethyl-tris (mercaptoeth) Ruchiomechiru) methane, compounds containing 1-hydroxyethyl-thio-3-mercaptoethyl hydroxy group other than the mercapto group of thio benzene;
1,1,3,3-tetrakis (mercaptomethylthio) propane, 1,1,2,2-tetrakis (mercaptomethylthio) ethane, 4,6-bis (mercaptomethylthio) -1,3-dithiacyclohexane, 1, 1,5,5-tetrakis (mercaptomethylthio) -3-thiapentane, 1,1,6,6-tetrakis (mercaptomethylthio) -3,4-dithiahexane, 2,2-bis (mercaptomethylthio) ethanethiol, 2- (4,5-Dimercapto-2-thiapentyl) -1,3-dithiacyclopentane, 2,2-bis (mercaptomethyl) -1,3-dithiacyclopentane, 2,5-bis (4,4- Bis (mercaptomethylthio) -2-thiabutyl) -1,4-dithiane, 2,2-bis (mercaptomethylthio) -1,3-propa Dithiol, 3-mercaptomethylthio-1,7-dimercapto-2,6-dithiaheptane, 3,6-bis (mercaptomethylthio) -1,9-dimercapto-2,5,8-trithianonane, 4,6-bis (mercapto) Methylthio) -1,9-dimercapto-2,5,8-trithianonane, 3-mercaptomethylthio-1,6-dimercapto-2,5-dithiahexane, 2- (2,2-bis (mercaptomethylthio) ethyl) -1 , 3-dithietane, 1,1,9,9-tetrakis (mercaptomethylthio) -5- (3,3-bis (mercaptomethylthio) -1-thiapropyl) 3,7-dithianonane, tris (2,2-bis ( Mercaptomethylthio) ethyl) methane, tris (4,4-bis (mercaptomethylthio) -2-thiabutyl) me , Tetrakis (2,2-bis (mercaptomethylthio) ethyl) methane, tetrakis (4,4-bis (mercaptomethylthio) -2-thiabutyl) methane, 3,5,9,11-tetrakis (mercaptomethylthio) -1 , 13-dimercapto-2,6,8,12-tetrathiatridecane, 3,5,9,11,15,17-hexakis (mercaptomethylthio) -1,19-dimercapto-2,6,8,12, 14,18-hexathiononadecane, 9- (2,2-bis (mercaptomethylthio) ethyl) -3,5,13,15-tetrakis (mercaptomethylthio) -1,17-dimercapto-2,6,8, 10,12,16-hexathiaheptadecane, 3,4,8,9-tetrakis (mercaptomethylthio) -1,11-dimercapto-2 , 5,7,10-tetrathiaundecane, 3,4,8,9,13,14-hexakis (mercaptomethylthio) -1,16-dimercapto-2,5,7,10,12,15-hexathiahexadecane 8- {bis (mercaptomethylthio) methyl} -3,4,12,13-tetrakis (mercaptomethylthio) -1,15-dimercapto-2,5,7,9,11,14-hexathiapentadecane, 4, 6-bis {3,5-bis (mercaptomethylthio) -7-mercapto-2,6-dithiaheptylthio} -1,3-dithiane, 4- {3,5-bis (mercaptomethylthio) -7-mercapto -2,6-dithiaheptylthio} -6-mercaptomethylthio-1,3-dithiane, 1,1-bis {4- (6-mercaptomethylthio) -1,3-dithi Nilthio} -3,3-bis (mercaptomethylthio) propane, 1,3-bis {4- (6-mercaptomethylthio) -1,3-dithianylthio} -1,3-bis (mercaptomethylthio) propane, 1- { 4- (6-Mercaptomethylthio) -1,3-dithianylthio} -3- {2,2-bis (mercaptomethylthio) ethyl} -7,9-bis (mercaptomethylthio) -2,4,6,10-tetra Thiaundecane, 1- {4- (6-mercaptomethylthio) -1,3-dithianylthio} -3- {2- (1,3-dithietanyl)} methyl-7,9-bis (mercaptomethylthio) -2,4 , 6,10-tetrathiaundecane, 1,5-bis {4- (6-mercaptomethylthio) -1,3-dithianylthio} -3- {2- (1,3-dithieta L)} methyl-2,4-dithiapentane, 4,6-bis [3- {2- (1,3-dithietanyl)} methyl-5-mercapto-2,4-dithiapentylthio] -1,3- Dithiane, 4,6-bis {4- (6-mercaptomethylthio) -1,3-dithianylthio} -1,3-dithiane, 4- {4- (6-mercaptomethylthio) -1,3-dithianylthio} -6 -{4- (6-mercaptomethylthio) -1,3-dithianylthio} -1,3-dithiane, 3- {2- (1,3-dithietanyl)} methyl-7,9-bis (mercaptomethylthio) -1 , 11-dimercapto-2,4,6,10-tetrathiaundecane, 9- {2- (1,3-dithietanyl)} methyl-3,5,13,15-tetrakis (mercaptomethylthio) -1,17- Zimmerka Put-2,6,8,10,12,16-hexathiaheptadecane, 3- {2- (1,3-dithietanyl)} methyl-7,9,13,15-tetrakis (mercaptomethylthio) -1, 17-dimercapto-2,4,6,10,12,16-hexathiaheptadecane, 3,7-bis {2- (1,3-dithietanyl)} methyl-1,9-dimercapto-2,4,6 , 8-tetrathianonane, 4- {3,4,8,9-tetrakis (mercaptomethylthio) -11-mercapto-2,5,7,10-tetrathiaundecyl} -5-mercaptomethylthio-1,3 -Dithiolane, 4,5-bis {3,4-bis (mercaptomethylthio) -6-mercapto-2,5-dithiahexylthio} -1,3-dithiolane, 4- {3,4-bis (mercaptomethyl) H ) -6-mercapto-2,5-dithiahexylthio} -5-mercaptomethylthio-1,3-dithiolane, 4- {3-bis (mercaptomethylthio) methyl-5,6-bis (mercaptomethylthio) -8 -Mercapto-2,4,7-trithiaoctyl} -5-mercaptomethylthio-1,3-dithiolane, 2- [bis {3,4-bis (mercaptomethylthio) -6-mercapto-2,5-dithia Hexylthio} methyl] -1,3-dithietane, 2- {3,4-bis (mercaptomethylthio) -6-mercapto-2,5-dithiahexylthio} mercaptomethylthiomethyl-1,3-dithietane, 2- {3,4,8,9-tetrakis (mercaptomethylthio) -11-mercapto-2,5,7,10-tetrathiaundecylthio} mercapto Tylthiomethyl-1,3-dithietane, 2- {3-bis (mercaptomethylthio) methyl-5,6-bis (mercaptomethylthio) -8-mercapto-2,4,7-trithiaoctyl} mercaptomethylthiomethyl-1, 3-dithietane, 4,5-bis [1- {2- (1,3-dithietanyl)}-3-mercapto-2-thiapropylthio] -1,3-dithiolane, 4- [1- {2- ( 1,3-dithietanyl)}-3-mercapto-2-thiapropylthio] -5- {1,2-bis (mercaptomethylthio) -4-mercapto-3-thiabutylthio} -1,3-dithiolane, 2- [ Bis {4- (5-mercaptomethylthio-1,3-dithiolanyl) thio}] methyl-1,3-dithietane, 4- {4- (5-mercaptomethylthio-1,3-dithio Ranyl) thio} -5- [1- {2- (1,3-dithietanyl)}-3-mercapto-2-thiapropylthio] -1,3-dithiolane, and dithioacetal or dithioketal skeletons of these oligomers A compound having:
Tris (mercaptomethylthio) methane, tris (mercaptoethylthio) methane, 1,1,5,5-tetrakis (mercaptomethylthio) -2,4-dithiapentane, bis [4,4-bis (mercaptomethylthio) -1,3 -Dithiabutyl] (mercaptomethylthio) methane, tris [4,4-bis (mercaptomethylthio) -1,3-dithiabutyl] methane, 2,4,6-tris (mercaptomethylthio) -1,3,5-trithiacyclohexane 2,4-bis (mercaptomethylthio) -1,3,5-trithiacyclohexane, 1,1,3,3-tetrakis (mercaptomethylthio) -2-thiapropane, bis (mercaptomethyl) methylthio-1,3 5-trithiacyclohexane, tris [(4-mercaptomethyl-2,5-dithi Cyclohexyl-1-yl) methylthio] methane, 2,4-bis (mercaptomethylthio) -1,3-dithiacyclopentane, 2-mercaptoethylthio-4-mercaptomethyl-1,3-dithiacyclopentane, 2 -(2,3-dimercaptopropylthio) -1,3-dithiacyclopentane, 4-mercaptomethyl-2- (2,3-dimercaptopropylthio) -1,3-dithiacyclopentane, 4- Mercaptomethyl-2- (1,3-dimercapto-2-propylthio) -1,3-dithiacyclopentane, tris [2,2-bis (mercaptomethylthio) -1-thiaethyl] methane, tris [3,3- Bis (mercaptomethylthio) -2-thiapropyl] methane, tris [4,4-bis (mercaptomethylthio) -3-thiabutyl] me 2,4,6-tris [3,3-bis (mercaptomethylthio) -2-thiapropyl] -1,3,5-trithiacyclohexane, tetrakis [3,3-bis (mercaptomethylthio) -2-thiapropyl ] Compounds having an ortho trithioformate skeleton such as methane and further oligomers thereof;
3,3′-di (mercaptomethylthio) -1,5-dimercapto-2,4-dithiapentane, 2,2′-di (mercaptomethylthio) -1,3-dithiacyclopentane, 2,7-di (mercapto) Methyl) -1,4,5,9-tetrathiaspiro [4,4] nonane, 3,9-dimercapto-1,5,7,11-tetrathiaspiro [5,5] undecane, and oligomers thereof Examples of the compound having an orthotetrathiocarbonate skeleton are not limited to these exemplified compounds. These exemplary compounds may be used alone or in combination of two or more.

  Of these thiol compounds, it is preferable to select an aliphatic thiol compound rather than an aromatic one in consideration of the optical properties of the resulting resin, particularly the Abbe number. Further, in view of optical properties, particularly the refractive index requirement, it is even more preferable to select a compound having a sulfur atom in addition to a thiol group such as a sulfide bond and / or a disulfide bond. From the viewpoint of improving the three-dimensional crosslinkability in consideration of the heat resistance of the resulting resin, it is particularly preferable to select one or more thiol compounds having a polymerizable group such as an epithio group or a thietanyl group or compounds having three or more thiol groups. .

  Preferred thiol compounds from the above viewpoints include 3-mercaptothietane, 1-mercapto-2,3-epithiopropane, 1-mercaptomethylthio-2,3-epithiopropane, 1-mercaptoethylthio-2,3. -Epithiopropane, 3-mercaptothietane, 2-mercaptothietane, 3-mercaptomethylthiothietane, 2-mercaptomethylthiothietane, 3-mercaptoethylthiothietane, 2-mercaptoethylthiothietane, 2,5 -Bis (mercaptomethyl) -1,4-dithiane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9- Trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9- Lithiaundecane, 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 1,1,1,1-tetrakis (mercaptomethyl) methane, 1,1,3,3- Tetrakis (mercaptomethylthio) propane, 1,1,2,2-tetrakis (mercaptomethylthio) ethane, 4,6-bis (mercaptomethylthio) -1,3-dithiane, 2- (2,2-bis (mercaptomethylthio) Ethyl) -1,3-dithietane.

  More preferably, 3-mercaptothietane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 2,5-bis (mercaptomethyl) -1,4-dithian, 4,8-dimercaptomethyl -1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 5,7-dimercaptomethyl-1 , 11-dimercapto-3,6,9-trithiaundecane, 1,1,1,1-tetrakis (mercaptomethyl) methane, 1,1,3,3-tetrakis (mercaptomethylthio) propane, 1,1,2 , 2-tetrakis (mercaptomethylthio) ethane, 4,6-bis (mercaptomethylthio) -1,3-dithiane, 2- (2,2-bis (mer) Putomechiruchio) ethyl) -1,3-is dithietane. Moreover, when selecting a bivalent thiol compound, it is preferable to use it mixing with the thiol compound which has a polymeric group, and / or the trivalent or more thiol compound.

  More specifically, the thiol compound is 3-mercaptothietane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6. , 9-trithiaundecane and 2,5-bis (mercaptomethyl) -1,4-dithiane.

  As the amount of these thiol compounds used, when the total amount of the compound represented by the general formula (1) and the thiol compound is 100 parts by weight, if the amount of the thiol compound used is too small, the hue is improved and the mechanical strength is increased. The improvement effect is small and may not be preferable. In addition, when the total amount of the compound represented by the general formula (1) and the thiol compound is 100 parts by weight, if the amount of the thiol compound used is too large, a decrease in heat resistance may be extremely undesirable.

  Therefore, the amount of the thiol compound used is preferably 1 part by weight or more and 50 parts by weight or less when the total of the compound represented by the general formula (1) and the thiol compound is 100 parts by weight. More preferably, the amount of the thiol compound used is 1 part by weight or more and 25 parts by weight or less when the total of the compound represented by the general formula (1) and the thiol compound is 100 parts by weight.

  If the polymerizable composition is configured to include the compound represented by the general formula (1) and the thiol compound, the mechanical properties and hue of the obtained resin can be further improved.

  Moreover, the polymerizable composition of the present invention may further contain a known and used polymerization catalyst for adjusting the polymerization rate, if necessary.

  Furthermore, further adjustment of the optical properties such as refractive index of resin formed by curing the polymerizable composition, Abbe number, hue, light resistance and weather resistance, heat resistance, impact resistance, hardness, specific gravity, linear expansion coefficient, To adjust various physical properties such as polymerization shrinkage, water absorption, hygroscopicity, chemical resistance, viscoelasticity, adjustment of transmittance and transparency, viscosity of polymerizable composition, and other handling and transportation methods For the purpose of improving the resin and the handleability, etc., a method generally used when synthesizing organic compounds such as purification, washing, heat retention, cold insulation, filtration, and reduced pressure treatment in the polymerizable composition of the present invention, It may be preferable to perform an operation or add a known compound or the like as a stabilizer or a resin modifier for the purpose of obtaining a good resin. Examples of compounds added to improve stability such as long-term storage stability, polymerization stability, and thermal stability include compounds such as polymerization retarders, polymerization inhibitors, oxygen scavengers, and antioxidants.

  Purifying the polymerizable composition is a technique used for improving the transparency of a resin obtained by curing, improving the hue, and increasing the purity. When purifying the polymerizable composition of the present invention, any known method such as recrystallization, column chromatography (silica gel method, activated carbon method, ion exchange resin method, etc.), extraction, etc. is performed at any timing. In general, it is sufficient that the transparency and hue of a resin obtained by curing a composition generally obtained by purification are improved.

  The method of washing the polymerizable composition is a technique used to improve the transparency of the resin obtained by curing or to improve the hue, but when the polymerizable composition is synthesized and taken out or after the synthesis A substance that is washed with a polar and / or non-polar solvent at a timing such as after the removal of the resin and inhibits the transparency of the resin, for example, an inorganic salt used in synthesizing a polymerizable composition, or a by-product, For example, a method of removing or reducing the amount of ammonium salt and the like can be mentioned. The solvent to be used cannot be generally limited by the polymerizable composition itself to be washed or the polarity of the solution containing the polymerizable composition, but the component to be removed can be dissolved and the polymerizable composition itself to be washed is used. And those that are not compatible with the solution containing the polymerizable composition are preferable, and not only one type but also two or more types may be mixed and used. The components to be removed here vary depending on the purpose and application, but it is preferable to reduce them as much as possible. Usually, good results may be obtained when the content is 5000 ppm or less, more preferably 1000 ppm or less.

  The method of keeping, cooling, and filtering the polymerizable composition is a technique used to improve the transparency of the resin obtained by curing or to improve the hue, but it is synthesized and taken out. In general, it is performed at a timing such as at the time of extraction or after removal after synthesis. As a heat retention method, for example, when the polymerizable composition is crystallized during storage and handling becomes worse, the polymerizable composition and the resin obtained by curing the polymerizable composition are heated and dissolved within a range that does not deteriorate the performance. The method of doing is mentioned. The temperature range to be heated and the method of heating and dissolving cannot be generally limited by the structure of the compound constituting the polymerizable composition to be handled, but are usually performed at a temperature within the freezing point + 50 ° C., preferably within + 20 ° C., Examples thereof include a method of mechanically stirring with a stirrable device or a method of moving and dissolving the internal solution by bubbling with an inert gas in the composition. Cooling is usually performed for the purpose of increasing the storage stability of the polymerizable composition. For example, when the melting point of the polymerizable composition is high, the storage temperature should be considered in order to improve the handling property after crystallization. . The cooling temperature cannot be unconditionally limited depending on the structure of the compound constituting the polymerizable composition to be handled and the storage stability, but it is usually necessary to store at or below the temperature at which the stability of the polymerizable composition of the present invention can be maintained. .

  In addition, when the polymerizable composition of the present invention is a polymerizable composition used for optical applications, it is usually required to filter the polymerizable composition with a filter having a small pore size, because its high transparency is required. The pore size of the filter used here is usually 0.05 μm or more and 10 μm or less. However, in consideration of operability and performance, it is preferably 0.05 μm or more and 5 μm or less, more preferably 0.1 μm or more and 5 μm or less. is there. The polymerizable composition of the present invention is no exception, and in many cases, good results can be obtained by filtration. As for the temperature at which filtration is performed, a more preferable result may be obtained if it is performed at a low temperature near the freezing point. However, when solidification proceeds during filtration, it is preferable to perform at a temperature that does not hinder the filtration operation. There is.

  The reduced pressure treatment is a technique generally used to remove a solvent, dissolved gas, and odor that lower the performance of a resin obtained by curing a polymerizable composition. Since the dissolved solvent may cause a decrease in the refractive index and heat resistance of the resin obtained in general, it should be removed as much as possible. The permissible value of the dissolved solvent cannot be generally limited depending on the structure of the compound constituting the polymerizable composition to be handled and the structure of the dissolved solvent, but is usually preferably 1% or less, more preferably 5000 ppm or less. . It is preferable to remove the dissolved gas from the viewpoint of suppressing the inhibition of the polymerization and the viewpoint of suppressing bubbles from being mixed into the resulting resin. In particular, it is preferable to remove a gas such as water vapor by bubbling with a dry gas. About a dissolved amount, it can set according to the structure of the compound which comprises a polymeric composition, the physical property and structure of dissolved gas, and a kind.

  As a method for producing the polymerizable composition in the present invention, typically, the compound represented by the general formula (1) and, if necessary, the above-mentioned various other polymerizable compounds are used in combination, and further necessary. The method of mixing and dissolving after adding the said polymerization catalyst according to the above is mentioned.

  The obtained polymerizable composition is useful, for example, as a raw material monomer composition for a transparent resin having an extremely high refractive index.

Further, the obtained polymerizable composition can be polymerized and cured in accordance with a method for polymerizing a known thietane group-containing compound.
The kind and amount of the polymerization catalyst and the like for obtaining the cured resin, and the kind and ratio of the monomer are set according to the structure of the compound constituting the polymerizable composition.

  When curing and molding the polymerizable composition of the present invention, a stabilizer, a resin modifier, a chain extender, a cross-linking agent, and a HALS system are representatively represented in the same manner as known molding methods depending on the purpose. Light stabilizers, UV absorbers typified by benzotriazoles, antioxidants typified by hindered phenols, anti-coloring agents, dyes typified by anthraquinone disperse dyes, bluing agents, fillers, silicones And various substances such as an external mold release agent typified by a surfactant, an internal mold release agent typified by a surfactant such as an acidic phosphate ester, a quaternary ammonium salt or a quaternary phosphonium salt, and an adhesion improver. Good. Here, an internal mold release agent includes what shows the mold release effect among the above-mentioned various catalysts.

  The amount of each additive that can be added differs depending on the type, structure, and effect of each additive, and cannot be unconditionally limited, but is usually 0.001 weight relative to the total weight of the polymerizable composition. % To 10% by weight, preferably 0.01% to 5% by weight. The dye is preferably used in the range of 1 ppb to 100 ppm. By setting it within these ranges, it is possible to produce a resin that is cured more favorably, and the transparency and optical properties of the resulting resin may be further improved.

  A resin is obtained by polymerizing the polymerizable composition. Examples of the polymerization method include various known methods used for producing plastic lenses, and typically, cast polymerization is used.

  When cast polymerization of the polymerizable composition of the present invention is carried out, if necessary, after depolymerization treatment and filter filtration under reduced pressure on the polymerizable composition, and then injected into a molding mold, necessary Depending on the temperature, polymerization is carried out. In this case, it is preferable to polymerize by gradually heating from a low temperature to a high temperature.

  The molding mold described above is composed of two molds that are mirror-polished through a gasket made of polyethylene, ethylene-vinyl acetate copolymer, polyvinyl chloride, or the like. The mold is typically a combination of glass and glass, and other molds include glass and plastic plate, glass and metal plate, but are not limited thereto. The molding mold may be a mold in which two molds are fixed with a tape such as a polyester adhesive tape. As needed, you may perform well-known processing methods, such as a mold release process, with respect to a casting_mold | template.

  When performing cast polymerization, the polymerization temperature is affected by the polymerization conditions such as the type of polymerization initiator and is not limited, but is usually −50 ° C. or higher and 200 ° C. or lower, preferably −20 ° C. It is 170 degreeC or less, More preferably, it is 0 degreeC or more and 150 degrees C or less.

  The polymerization time is affected by the polymerization temperature, but is usually 0.01 hours or more and 200 hours or less, and preferably 0.05 hours or more and 100 hours or less. Moreover, it is also possible to carry out polymerization by combining several temperatures by performing constant temperature, temperature increase, temperature decrease or the like as necessary.

  The polymerizable composition of the present invention can also be polymerized by irradiating an active energy ray such as an electron beam, ultraviolet ray or visible ray. In this case, a radical polymerization catalyst or a cationic polymerization catalyst that initiates polymerization by active energy rays is used as necessary.

  The obtained resin may be annealed as necessary after curing. If necessary, surface polishing, antistatic treatment, hard coat treatment, non-reflective coating treatment, dyeing treatment, dyeing treatment, antireflection, high hardness, wear resistance improvement, antifogging or fashionability. Various known physical or chemical treatments such as light treatment (for example, photochromic lens formation treatment) may be performed.

  The resin obtained by polymerizing the polymerizable composition of the present invention has high transparency, good heat resistance and mechanical strength, and has a high refractive index, such as a plastic lens. It is useful as a resin used for optical parts.

Examples of optical components include various plastic lenses such as eyeglass lenses for correcting vision, lenses for imaging devices, Fresnel lenses for liquid crystal projectors, lenticular lenses, and contact lenses;
Sealing material for light emitting diode (LED);
Optical waveguide;
Optical adhesive used for bonding optical lenses and optical waveguides;
Anti-reflective film used for optical lenses;
Examples thereof include a transparent coating or a transparent substrate used for liquid crystal display device members such as a substrate, a light guide plate, a film, and a sheet.

  Hereinafter, the present invention will be described more specifically with reference to production examples and examples, but the present invention is not limited to these examples.

(Reference Production Example 1)
According to the method described in Patent Document 2 (Japanese Patent Laid-Open No. 2003-327583), 3-thiethanol was synthesized. Further, 3-mercaptothietane was synthesized using the obtained 3-thiethanol.
That is, in a reactor equipped with a stirrer and a thermometer, 190 g (2.50 mol) of thiourea, 253 g of 35% by weight hydrochloric acid water and 250 g of water were charged and stirred to obtain a reaction solution. While stirring the reaction solution, 156 g (1.73 mol) of 3-thiethanol was appropriately added to the reaction solution over 1 hour. After completion of the dropwise addition, the reaction was conducted with stirring at 30 ° C. for 24 hours, and then 177 g of 24 wt% aqueous ammonia was appropriately reduced over 1 hour. Furthermore, after reacting at 30 degreeC for 15 hours, it left still and took out the organic layer (lower layer), and obtained 134 g of crude products. The obtained crude product was distilled under reduced pressure, and fractions having a boiling point of 40 ° C./106 Pa were collected to obtain 3-mercaptothietane, which was a colorless transparent liquid, which was the target product.

(Reference Production Example 2)
Tetrakis (3-thietanylthio) tin (compound shown below) was synthesized according to the method described in Patent Document 1 (Pamphlet of International Publication No. 2005-095490).
11.2 g (0.11 mol) of 3-mercaptothietan produced in Reference Production Example 1 was charged into 50 g of pure water, followed by 41.2 g (0.10 mol) of 10% aqueous sodium hydroxide solution. The dripping was carried out at room temperature over 40 minutes. Subsequently, the temperature of the reaction solution was raised to 30 ° C., and 65.2 g of a 10% tin tetrachloride aqueous solution (corresponding to 0.025 mol of tin tetrachloride) was added dropwise at the same temperature over 4 hours. After completion of dropping, the mixture was further stirred at the same temperature for 2 hours. To this reaction mixture, 100 ml of chloroform was added, and the mixture was separated into an organic layer and an aqueous layer. The organic layer was washed twice with 100 ml of pure water and then dried using anhydrous sodium sulfate. The solvent was distilled off from this extract to obtain 13.4 g (99% yield) of the following compound (tetrakis (3-thietanylthio) tin).

Example 1
Synthesis of tris (3-thietanylthio) indium (III) (compound shown below) 65 g of pure water was added to 16.3 g (0.15 mol) of 3-mercaptothietan synthesized in Reference Production Example 1, and the mixture was stirred and dispersed. After the solution was cooled to 10 ° C., 20.0 g (0.15 mol) of 30% aqueous sodium hydroxide solution was charged and stirred for 1 hour. To this solution, an aqueous solution prepared by dissolving 14.7 g of indium chloride tetrahydrate (0.05 mol: commercially available product (manufactured by Wako Pure Chemical Industries, Ltd.)) in 50 g of water was added dropwise over 1 hour, followed by stirring for 12 hours to react. I did it. The produced white solid was collected by filtration, washed with methanol, and dried under reduced pressure to obtain 16.0 g of a crude product of tris (3-thietanylthio) indium. 5.4 g of crude tris (3-thietanylthio) indium was dissolved in 50 g of N, N-dimethylformamide, filtered to remove insoluble matters, and then discharged into water. The precipitated solid was collected by filtration, washed with methanol, and dried under reduced pressure to obtain 4.5 g of the desired tris (3-thietanylthio) indium.

The identification data of the obtained compound are shown below.
¹ H-NMR (solvent: DMSO-d6, internal standard: TMS) δ: 3.17 (6H), 3.32 (6H), 4.54 (3H).
¹³ C-NMR (solvent: DMSO-d6) δ: 39.7, 40.3.
IR (Universal ATR method): 1442, 1415, 1253, 1159, 950, 934, 780, 771, 639, 565 cm ⁻¹ .

(Preparation of polymerizable composition and production of cured resin by polymerization)
In the following examples, a polymerizable composition was prepared using the thietane compound produced in the above examples, and was cured by polymerizing to obtain a resin.
The physical properties of the obtained resin or optical component (lens) were evaluated by the following methods.
Appearance: The transparency was confirmed visually.
Refractive index, Abbe number: Measured at 20 ° C. using a Purfrich refractometer.

(Example 2)
At room temperature (25 ° C.), 0.5 g of the compound produced in Example 1 was weighed in a glass beaker, and 0.5 g of the compound produced in Reference Production Example 1 was added and stirred and mixed. This was heated to 70 ° C. using a water bath and stirred to dissolve. The polymer was further placed in an oven at 70 ° C. for 48 hours, and then polymerized at 80 ° C. for 1 hour.
The obtained resin molded piece had good transparency and good appearance without distortion.
Further, when the refractive index of the obtained resin was measured, the refractive index ne = 1.750 and the Abbe number νe = 24.

(Example 3)
Under room temperature (25 ° C.), 0.22 g of the compound produced in Example 1 was weighed in a glass beaker, 0.80 g of the compound produced in Reference Production Example 1 was added, and the mixture was stirred and mixed. This was heated to 70 ° C. using a water bath, stirred and dissolved, and then 1.20 g of the compound prepared in Reference Production Example 2 was added and stirred and dissolved. The polymer was further placed in an oven at 70 ° C. for 48 hours, and then polymerized at 80 ° C. for 1 hour.
The obtained resin molded piece had good transparency and good appearance without distortion.
Further, when the refractive index of the obtained resin was measured, the refractive index ne = 1.759 and the Abbe number νe = 26.

Claims (11)

A thietane compound represented by the following general formula (1).

(In the general formula (1), X ₁ represents a sulfur atom or an oxygen atom. P represents an integer of 1 or more and 3 or less. R is 3-p.
Y is a monovalent inorganic or organic group. When r is 2, a plurality of Y each independently represents an inorganic or organic group. Moreover, several Y may couple | bond together and may form the ring containing In atom. ) The thietane compound according to claim 1,
A thietane compound in which p = 3 and r = 0 in the general formula (1). The thietane compound according to claim 1 or 2,
A thietane compound represented by the general formula (1), wherein X ₁ is a sulfur atom.   A polymerizable composition comprising the thietane compound according to claim 1. The polymerizable composition according to claim 4,
Furthermore, the polymerizable composition containing a thiol compound. The polymerizable composition according to claim 5,
The thiol compound is 3-mercaptothietane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithia. A polymerizable composition which is at least one selected from the group consisting of undecane and 2,5-bis (mercaptomethyl) -1,4-dithiane.   A method for producing a resin, comprising a step of cast polymerization of the polymerizable composition according to claim 4 to obtain a resin.   A resin obtained by polymerizing the polymerizable composition according to claim 4.   An optical component made of the resin according to claim 8.   Use of the polymerizable composition according to any one of claims 4 to 6 as an optical component.   Use of a resin obtained by polymerizing the polymerizable composition according to claim 4 as an optical component.