JP4245515B2 - Method of suppressing strength reduction of episulfide sulfur atom-containing resin optical material - Google Patents

Description

  The present invention relates to a sulfur atom-containing resin material, particularly an episulfide-based sulfur atom-containing resin material, which is suitably used in the resin field such as an optical material that requires a high refractive index and high transparency.

In recent years, plastic lenses are rapidly spreading to optical elements such as spectacle lenses and camera lenses because they are lighter and harder to break than inorganic lenses and can be dyed.
The performance required for these plastic lenses is high refractive index and high Abbe number as optical performance, and high heat resistance, high impact resistance and low specific gravity as physical properties.

  Currently, polythiourethane resins in which sulfur atoms are introduced into the resin are known as resins that satisfy these required performances to some extent. The polythiourethane resin is a resin having an excellent balance such as high refractive index and good impact resistance (see, for example, Patent Document 1 and Patent Document 2).

  Further, in response to demands for higher refractive index and higher Abbe number, methods for improving the sulfur content of polythiol compounds used in polythiourethanes have also been proposed (for example, Patent Document 3 and Patent Document 4). Patent Document 5, Patent Document 6).

On the other hand, a method using an episulfide compound has been proposed as a material pursuing a high refractive index and a high Abbe number, although required physical properties relating to strength such as impact resistance are not satisfied. (For example, see Patent Document 7 and Patent Document 8)
JP-A-60-199016 JP-A-63-46213 Japanese Patent Laid-Open No. 02-270859 Japanese Patent Laid-Open No. 03-236386 JP 07-252207 A JP 2001-342172 A Japanese Patent Application Laid-Open No. 09-110979 JP 11-322930 A

  According to the methods of these patent documents, excellent performance as a plastic lens such as a high refractive index, a high Abbe number, and a low specific gravity can be realized. However, in the resin obtained by these methods and plastic lenses made from the resin, the strength of the lens may decrease, for example, as it undergoes subsequent processes such as washing, dyeing, coating, and polishing. Contributed to the decline in quality. In particular, with respect to an episulfide resin having a relatively small absolute value of strength and a lens comprising the same, the influence of the strength reduction is serious. Accordingly, there has been a demand for the development of a high-performance episulfide-based plastic lens base material in which the strength reduction in the post-process is small, and as a result, quality degradation is unlikely to occur.

  As a result of diligent study paying attention to various physical properties of the resin in order to solve the above-mentioned problems, the water absorption rate of the resin at a temperature of 25 ° C. and 24 hours measured by JIS K7209 is 0.01%. It has been found that a material composed of an episulfide-based sulfur atom-containing resin, which is less than 1, is an excellent optical material with a small decrease in lens strength in the subsequent step, and has led to the present invention.

That is, the present invention
[1] A method for suppressing a decrease in strength after post-treatment of an optical material comprising an episulfide-based sulfur atom-containing resin obtained by polymerizing a polymerizable composition containing an episulfide compound and a polythiol compound, wherein the resin is JIS The present invention relates to a method characterized by using a resin having a water absorption rate of less than 0.01% and not less than 0.0010% at a temperature of 25 ° C. for 24 hours, measured according to K7209. In the present invention, “consisting of an episulfide-based sulfur atom-containing resin” means that a part of the optical material is composed of the episulfide-based sulfur atom-containing resin, and that the entire optical material is the episulfide. When it is comprised with a system sulfur atom containing resin, it is the meaning including both.
[2] to [5] are each one of preferred embodiments of the present invention.
[2] The method according to [1], wherein the episulfide-based sulfur-containing resin has a refractive index of 1.60 or more.
[3] The method according to [1] or [2], wherein the polymerizable composition further contains an iso (thio) cyanate compound .
[4] The method according to [3], wherein the polymerizable composition further contains elemental sulfur .
[5] The method according to any one of [1] to [4], wherein the optical material is a plastic lens.

  The present invention contributes to the provision of high-quality materials for episulfide plastic lenses in the field of optical materials such as eyeglass lenses having a high refractive index and a high Abbe number.

Hereinafter, the present invention will be described in detail. First, the water absorption rate of the present invention will be described.
The water absorption rate in the present invention refers to a value measured at a temperature of 25 ° C. and a measurement time of 24 hours in accordance with the method of Japanese Industrial Standard JIS K7209. The test piece is a square with a side of 50 ± 1 mm and a thickness of 3 ± 0.2 mm.

  As a result of intensive studies by the present inventors, the material capable of suppressing the decrease in the strength of the lens in the subsequent process is preferably less than 0.01%, more preferably less than 0.009%. If it is less than 0.008%, a more preferable result may be given.

  The optical material of the present invention is composed of an episulfide-based sulfur atom-containing resin. In order to adjust the water absorption rate to less than 0.01%, conventionally known methods used in various resins are appropriately used. Can be used.

  For example, by limiting the structure of the polymer chain constituting the resin, the water absorption rate of the resin can be appropriately increased or decreased. More specifically, in the episulfide-based sulfur atom-containing resin in the present invention, the water absorption rate of the resin can be increased or decreased by increasing or decreasing the content of sulfur atoms present in the resin. If the sulfur content in the episulfide sulfur atom-containing resin increases, the water absorption rate of the resin tends to decrease, and if the sulfur content decreases, the water absorption rate tends to increase.

In a material system using an episulfide compound having a dithioacetal skeleton or a dithioketal skeleton as in the examples of the present invention, in order to reduce the water absorption to less than 0.01%, the influence of additives such as a resin modifier Can vary, but usually
It is advisable to select the monomer raw material compound and the mixing ratio of the resin so that the content of sulfur atoms present in the resin is 40% by weight or more. It is more preferably 45% by weight or more, and further preferably 50% by weight or more. The preferred sulfur atom content that gives the desired water absorption depends on the material system, but can be determined by conventionally known data and / or relatively simple experiments.

  Also. The water absorption rate of the resin can be appropriately adjusted by adding various resin modifiers as described below.

  As described above, from the viewpoint of suppressing a decrease in the strength of the lens in the post-process, it is preferable that the water absorption rate of the resin is low. There is a case. From the viewpoint of ease of dyeing, the water absorption rate of the resin is usually 0.0010% or more, preferably 0.0012% or more, and more preferably 0.0015% or more.

  Subsequently, the episulfide sulfur atom-containing resin optical material in the present invention will be described. The sulfur atom-containing resin in the present invention is a resin in which a sulfur atom is introduced into a polymer chain, and a resin having a sulfur atom in a polymer chain such as a sulfide bond, a disulfide bond, a thiourethane bond or a thioester bond. Means that. In the case of the present invention, even if the polymer chain does not have a sulfur atom, a resin which is present in the resin in a state where sulfur is dissolved is also treated as a sulfur atom-containing resin. Among such sulfur atom-containing resins, it is essential that the episulfide-based sulfur atom-containing resin in the present invention uses an episulfide-based compound as the main component or subcomponent of the raw material compound.

  Here, the specific example of the episulfide compound as a raw material of episulfide type | system | group sulfur atom containing resin is given. In the present invention, specific examples of episulfide compounds that can be used for producing episulfide-based sulfur atom-containing resins include bis (1,2-epithioethyl) sulfide, bis (1,2-epithioethyl) disulfide, and bis (epithioethyl). Epithioethyl compounds such as thio) methane, bis (epithioethylthio) benzene, bis [4- (epithioethylthio) phenyl] sulfide, bis [4- (epithioethylthio) phenyl] methane, bis (2,3 -Epithiopropyl) sulfide, bis (2,3-epithiopropyl) disulfide, bis (2,3-epithiopropylthio) methane, 1,2-bis (2,3-epithiopropylthio) ethane, , 2-bis (2,3-epithiopropylthio) propane, 1,3-bis (2,3-epithio) Propylthio) propane, 1,3-bis (2,3-epithiopropylthio) -2-methylpropane, 1,4-bis (2,3-epithiopropylthio) butane, 1,4-bis (2, 3-epithiopropylthio) -2-methylbutane, 1,3-bis (2,3-epithiopropylthio) butane, 1,5-bis (2,3-epithiopropylthio) pentane, 1,5- Bis (2,3-epithiopropylthio) -2-methylpentane, 1,5-bis (2,3-epithiopropylthio) -3-thiapentane, 1,6-bis (2,3-epithiopropyl) Thio) hexane, 1,6-bis (2,3-epithiopropylthio) -2-methylhexane, 3,8-bis (2,3-epithiopropylthio) -3,6-dithiaoctane, 1,2 , 3-Tris (2,3-epi Opropylthio) propane, 2,2-bis (2,3-epithiopropylthio) -1,3-bis (2,3-epithiopropylthiomethyl) propane, 2,2-bis (2,3-epithio) Propylthiomethyl) -1- (2,3-epithiopropylthio) butane, 1,5-bis (2,3-epithiopropylthio) -2- (2,3-epithiopropylthiomethyl) -3 -Thiapentane, 1,5-bis (2,3-epithiopropylthio) -2,4-bis (2,3-epithiopropylthiomethyl) -3-thiapentane, 1- (2,3-epithiopropyl) Thio) -2,2-bis (2,3-epithiopropylthiomethyl) -4-thiahexane, 1,5,6-tris (2,3-epithiopropylthio) -4- (2,3-epi Thiopropylthiomethyl) -3-thiahe Xanthine, 1,8-bis (2,3-epithiopropylthio) -4- (2,3-epithiopropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epithio) Propylthio) -4,5-bis (2,3-epithiopropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epithiopropylthio) -4,4-bis (2 , 3-epithiopropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epithiopropylthio) -2,5-bis (2,3-epithiopropylthiomethyl) -3 , 6-dithiaoctane, 1,8-bis (2,3-epithiopropylthio) -2,4,5-tris (2,3-epithiopropylthiomethyl) -3,6-dithiaoctane, 1,1, 1-tris [[2- (2,3-epithiopropipropyl Thio) ethyl] thiomethyl] -2- (2,3-epithiopropylthio) ethane, 1,1,2,2-tetrakis [[2- (2,3-epithiopropylthio) ethyl] thiomethyl] ethane, 1,11-bis (2,3-epithiopropylthio) -4,8-bis (2,3-epithiopropylthiomethyl) -3,6,9-trithiaundecane, 1,11-bis (2 , 3-epithiopropylthio) -4,7-bis (2,3-epithiopropylthiomethyl) -3,6,9-trithiaundecane, 1,11-bis (2,3-epithiopropylthio) ) -5,7-bis (2,3-epithiopropylthiomethyl) -3,6,9-trithiaundecane and other chain aliphatic 2,3-epithiopropylthio compounds, and

  1,3-bis (2,3-epithiopropylthio) cyclohexane, 1,4-bis (2,3-epithiopropylthio) cyclohexane, 1,3-bis (2,3-epithiopropylthiomethyl) Cyclohexane, 1,4-bis (2,3-epithiopropylthiomethyl) cyclohexane, 2,5-bis (2,3-epithiopropylthiomethyl) -1,4-dithiane, 2,5-bis [[ 2- (2,3-epithiopropylthio) ethyl] thiomethyl] -1,4-dithiane, 2,5-bis (2,3-epithiopropylthiomethyl) -2,5-dimethyl-1,4- Cycloaliphatic 2,3-epithiopropylthio compounds such as dithiane, and

  1,2-bis (2,3-epithiopropylthio) benzene, 1,3-bis (2,3-epithiopropylthio) benzene, 1,4-bis (2,3-epithiopropylthio) benzene 1,2-bis (2,3-epithiopropylthiomethyl) benzene, 1,3-bis (2,3-epithiopropylthiomethyl) benzene, 1,4-bis (2,3-epithiopropyl) Thiomethyl) benzene, bis [4- (2,3-epithiopropylthio) phenyl] methane, 2,2-bis [4- (2,3-epithiopropylthio) phenyl] propane, bis [4- ( 2,3-epithiopropylthio) phenyl] sulfide, bis [4- (2,3-epithiopropylthio) phenyl] sulfone, 4,4′-bis (2,3-epithiopropylthio) biphenyl, etc. Aromatic , 3-epithiopropylthio compound,

  Bis (2,3-epithiopropyldithio) methane, bis (2,3-epithiopropyldithio) ethane, bis (6,7-epithio-3,4-dithiaheptyl) sulfide, bis (6,7-epithio- 3,4-dithiaheptyl) disulfide, 1,4-dithian-2,5-bis (2,3-epithiopropyldithiomethyl), 1,3-bis (2,3-epithiopropyldithiomethyl) benzene, , 6-Bis (2,3-epithiopropyldithiomethyl) -2- (2,3-epithiopropyldithioethylthio) -4-thiahexane, 1,2,3-tris (2,3-epithiopropyl) Dithio) propane, 1,1,1,1-tetrakis (2,3-epithiopropyldithiomethyl) methane, 1,3-bis (2,3-epithiopropyldithio) -2-thiapro 1,4-bis (2,3-epithiopropyldithio) -2,3-dithiabutane, 1,1,1-tris (2,3-epithiopropyldithio) methane, 1,1,1-tris (2,3-epithiopropyldithiomethylthio) methane, 1,1,2,2-tetrakis (2,3-epithiopropyldithio) ethane, 1,1,2,2-tetrakis (2,3-epithio) Propyldithiomethylthio) ethane, 1,1,3,3-tetrakis (2,3-epithiopropyldithio) propane, 1,1,3,3-tetrakis (2,3-epithiopropyldithiomethylthio) propane, 2 -[1,1-bis (2,3-epithiopropyldithio) methyl] -1,3-dithietane, 2- [1,1-bis (2,3-epithiopropyldithiomethylthio) methyl] -1, 3-di Compounds having a 2,3-epithiopropyl dithio skeleton of ethane,

  Monofunctional episulfide compounds such as ethylene sulfide, propylene sulfide, 3-mercaptopropylene sulfide, 4-mercaptobutene sulfide, epithiochlorohydrin,

  Bis (2,3-epithiopropyl) ether, bis (2,3-epithiopropyloxy) methane, 1,2-bis (2,3-epithiopropyloxy) ethane, 1,2-bis (2, 3-epithiopropyloxy) propane, 1,3-bis (2,3-epithiopropyloxy) propane, 1,3-bis (2,3-epithiopropyloxy) -2-methylpropane, 1,4 -Bis (2,3-epithiopropyloxy) butane, 1,4-bis (2,3-epithiopropyloxy) -2-methylbutane, 1,3-bis (2,3-epithiopropyloxy) butane 1,5-bis (2,3-epithiopropyloxy) pentane, 1,5-bis (2,3-epithiopropyloxy) -2-methylpentane, 1,5-bis (2,3-epi Thiopropyloxy) 3-thiapentane, 1,6-bis (2,3-epithiopropyloxy) hexane, 1,6-bis (2,3-epithiopropyloxy) -2-methylhexane, 3,8-bis (2, 3-epithiopropyloxy) -3,6-dithiaoctane, 1,2,3-tris (2,3-epithiopropyloxy) propane, 2,2-bis (2,3-epithiopropyloxy) -1 , 3-bis (2,3-epithiopropyloxymethyl) propane, 2,2-bis (2,3-epithiopropyloxymethyl) -1- (2,3-epithiopropyloxy) butane, 1, 5-bis (2,3-epithiopropyloxy) -2- (2,3-epithiopropyloxymethyl) -3-thiapentane, 1,5-bis (2,3-epithiopropyloxy) -2, 4-bis (2, -Epithiopropyloxymethyl) -3-thiapentane, 1- (2,3-epithiopropyloxy) -2,2-bis (2,3-epithiopropyloxymethyl) -4-thiahexane, 1,5, 6-Tris (2,3-epithiopropyloxy) -4- (2,3-epithiopropyloxymethyl) -3-thiahexane, 1,8-bis (2,3-epithiopropyloxy) -4- (2,3-epithiopropyloxymethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epithiopropyloxy) -4,5-bis (2,3-epithiopropyloxymethyl) 3,6-dithiaoctane, 1,8-bis (2,3-epithiopropyloxy) -4,4-bis (2,3-epithiopropyloxymethyl) -3,6-dithiaoctane, 1,8- Screw( 2,3-epithiopropyloxy) -2,5-bis (2,3-epithiopropyloxymethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epithiopropyloxy) -2 , 4,5-tris (2,3-epithiopropyloxymethyl) -3,6-dithiaoctane, 1,1,1-tris [[2- (2,3-epithiopropyloxy) ethyl] thiomethyl]- 2- (2,3-epithiopropyloxy) ethane, 1,1,2,2-tetrakis [[2- (2,3-epithiopropyloxy) ethyl] thiomethyl] ethane, 1,11-bis (2 , 3-epithiopropyloxy) -4,8-bis (2,3-epithiopropyloxymethyl) -3,6,9-trithiaundecane, 1,11-bis (2,3-epithiopropyloxy) ) -4,7-Bis 2,3-epithiopropyloxymethyl) -3,6,9-trithiaundecane, 1,11-bis (2,3-epithiopropyloxy) -5,7-bis (2,3-epithiopropyl) Chain aliphatic 2,3-epithiopropyloxy compounds such as (oxymethyl) -3,6,9-trithiaundecane, and

  1,3-bis (2,3-epithiopropyloxy) cyclohexane, 1,4-bis (2,3-epithiopropyloxy) cyclohexane, 1,3-bis (2,3-epithiopropyloxymethyl) Cyclohexane, 1,4-bis (2,3-epithiopropyloxymethyl) cyclohexane, 2,5-bis (2,3-epithiopropyloxymethyl) -1,4-dithiane, 2,5-bis [[ 2- (2,3-epithiopropyloxy) ethyl] thiomethyl] -1,4-dithiane, 2,5-bis (2,3-epithiopropyloxymethyl) -2,5-dimethyl-1,4- Cycloaliphatic 2,3-epithiopropyloxy compounds such as dithiane, and

  1,2-bis (2,3-epithiopropyloxy) benzene, 1,3-bis (2,3-epithiopropyloxy) benzene, 1,4-bis (2,3-epithiopropyloxy) benzene 1,2-bis (2,3-epithiopropyloxymethyl) benzene, 1,3-bis (2,3-epithiopropyloxymethyl) benzene, 1,4-bis (2,3-epithiopropyl) Oxymethyl) benzene, bis [4- (2,3-epithiopropyloxy) phenyl] methane, 2,2-bis [4- (2,3-epithiopropyloxy) phenyl] propane, bis [4- ( 2,3-epithiopropyloxy) phenyl] sulfide, bis [4- (2,3-epithiopropyloxy) phenyl] sulfone, 4,4′-bis (2,3-epithiopropyloxy) It can be exemplified aromatic 2,3-epithiopropyl oxy compounds such biphenyl, but is not limited only to the exemplified compounds.

  Among the exemplified compounds, preferred compounds include bis (1,2-epithioethyl) sulfide, bis (1,2-epithioethyl) disulfide, bis (2,3-epithiopropyl) sulfide, and bis (2,3-epithiopropyl). Thio) methane and bis (2,3-epithiopropyl) disulfide, bis (2,3-epithiopropyldithio) methane, bis (2,3-epithiopropyldithio) ethane, bis (6,7-epithio- 3,4-dithiaheptyl) sulfide, bis (6,7-epithio-3,4-dithiaheptyl) disulfide, 1,4-dithian-2,5-bis (2,3-epithiopropyldithiomethyl), 1,3 -Bis (2,3-epithiopropyldithiomethyl) benzene, 1,6-bis (2,3-epithiopropyldithiomethyl) -2 (2,3-epithiopropyldithioethylthio) -4-thiahexane, 1,2,3-tris (2,3-epithiopropyldithio) propane, 1,1,1,1-tetrakis (2,3- Epithiopropyldithiomethyl) methane, 1,3-bis (2,3-epithiopropyldithio) -2-thiapropane, 1,4-bis (2,3-epithiopropyldithio) -2,3-dithiabutane, 1,1,1-tris (2,3-epithiopropyldithio) methane, 1,1,1-tris (2,3-epithiopropyldithiomethylthio) methane, 1,1,2,2-tetrakis (2 , 3-epithiopropyldithio) ethane, 1,1,2,2-tetrakis (2,3-epithiopropyldithiomethylthio) ethane, 1,1,3,3-tetrakis (2,3-epithiopropyl) Thio) propane, 1,1,3,3-tetrakis (2,3-epithiopropyldithiomethylthio) propane, 2- [1,1-bis (2,3-epithiopropyldithio) methyl] -1,3 -Dithietane, 2- [1,1-bis (2,3-epithiopropyldithiomethylthio) methyl] -1,3-dithietane, and more preferable compounds are bis (1,2-epithioethyl) sulfide, bis ( 1,2-epithioethyl) disulfide, and bis (2,3-epithiopropyl) disulfide, bis (2,3-epithiopropyldithio) methane, bis (2,3-epithiopropyldithio) ethane, bis (6 , 7-epithio-3,4-dithiaheptyl) sulfide, bis (6,7-epithio-3,4-dithiaheptyl) disulfide, 1,4-dithia 2,5-bis (2,3-epithiopropyldithiomethyl), 1,3-bis (2,3-epithiopropyldithiomethyl) benzene, 1,6-bis (2,3-epithiopropyl) Dithiomethyl) -2- (2,3-epithiopropyldithioethylthio) -4-thiahexane, 1,2,3-tris (2,3-epithiopropyldithio) propane, 1,1,1,1- Tetrakis (2,3-epithiopropyldithiomethyl) methane, 1,3-bis (2,3-epithiopropyldithio) -2-thiapropane, 1,4-bis (2,3-epithiopropyldithio)- 2,3-dithiabutane, 1,1,1-tris (2,3-epithiopropyldithio) methane, 1,1,1-tris (2,3-epithiopropyldithiomethylthio) methane, 1,1,2 , 2-Tetra (2,3-epithiopropyldithio) ethane, 1,1,2,2-tetrakis (2,3-epithiopropyldithiomethylthio) ethane, 1,1,3,3-tetrakis (2,3-epi Thiopropyldithio) propane, 1,1,3,3-tetrakis (2,3-epithiopropyldithiomethylthio) propane, 2- [1,1-bis (2,3-epithiopropyldithio) methyl] -1 , 3-dithietane, 2- [1,1-bis (2,3-epithiopropyldithiomethylthio) methyl] -1,3-dithietane. Among the skeleton compounds as described above, episulfide compounds having a high sulfur atom content are more preferable.

  These episulfide compounds may be used alone or in combination of two or more.

  Examples of other resins having sulfide bonds or disulfide bonds in the polymer chain include those obtained by producing a polymer from a compound having a sulfide bond or disulfide bond in the molecule as a raw material. In addition, there is a case where a sulfide bond is formed by polymerization without having a sulfide bond in advance. Typical examples thereof include resins obtained by polymerizing and curing polyolefin compounds or polyepoxy compounds and polythiol compounds, and resins obtained by ring-opening polymerization of polythietane compounds.

  Here, a specific example is given. In the present invention, specific examples of polyolefin compounds that can be used for producing a sulfur atom-containing resin include benzyl acrylate, benzyl methacrylate, butoxyethyl acrylate, butoxymethyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, and 2-hydroxyethyl. Acrylate, 2-hydroxymethyl methacrylate, glycidyl acrylate, glycidyl methacrylate, phenoxyethyl acrylate, phenoxyethyl methacrylate, phenyl methacrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, triethylene glycol diacrylate, tri ethylene Recall dimethacrylate, tetraethylene glycol diacrylate, tetraethylene glycol dimethacrylate, polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, neopentyl glycol diacrylate, neopentyl glycol dimethacrylate, ethylene glycol bisglycidyl acrylate, ethylene glycol bisglycidyl methacrylate, Bisphenol A diacrylate, bisphenol A dimethacrylate, 2,2-bis (4-acryloxyethoxyphenyl) propane, 2,2-bis (4-methacryloxyethoxyphenyl) propane, 2,2-bis (4-acryloxy) Diethoxyphenyl) propane, 2,2-bis (4-methacryloxydiethoxyphenyl) propane, bisphenol F diacrylate, bisphenol F dimethacrylate, 1,1-bis (4-acryloxyethoxyphenyl) methane, 1,1-bis (4-methacryloxyethoxyphenyl) methane, 1,1-bis (4-acrylic) Xydiethoxyphenyl) methane, 1,1-bis (4-methacryloxydiethoxyphenyl) methane, dimethyloltricyclodecane diacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, glycerol diacrylate, glycerol dimethacrylate , Pentaerythritol triacrylate, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, methylthioacrylate, methylthiomethacrylate, phenylthioacrylate, benzine (Meth) acrylate compounds such as ruthiomethacrylate, xylylenedithiol diacrylate, xylylenedithiol dimethacrylate, mercaptoethylsulfide diacrylate, mercaptoethylsulfide dimethacrylate,

  Allyl compounds such as allyl glycidyl ether, diallyl phthalate, diallyl terephthalate, diallyl isophthalate, diallyl carbonate, diethylene glycol bisallyl carbonate, styrene, chlorostyrene, methylstyrene, bromostyrene, dibromostyrene, divinylbenzene, 3,9-divinylspirobi (m -Dioxane), vinyl compounds such as divinyl sulfide and divinyl disulfide, and diisopropenylbenzene are exemplified, but the compound is not limited to the exemplified compounds.

  Next, specific examples of usable polyepoxy compounds include polyhydric phenol compounds such as bisphenol A glycidyl ether and polyhydric phenols such as hydrogenated bisphenol A glycidyl ether obtained by condensation reaction of epihalohydrin compounds. Polyhydric compounds such as alcohol-based epoxy compounds obtained by condensation of alcohol compounds and epihalohydrin compounds, 3,4-epoxycyclohexylmethyl-3 ′, 4′-epoxycyclohexanecarboxylate, 1,2-hexahydrophthalic acid diglycidyl ester, etc. Glycidyl ester epoxy compounds obtained by condensation of organic acid compounds and epihalohydrin compounds, amine epoxy compounds obtained by condensation of secondary amine compounds and epihalohydrin compounds, etc. And the like b hexene diepoxide and an aliphatic polyvalent epoxy compound.

  Specific examples of the sulfide group-containing epoxide compound and the ether group-containing epoxide compound include bis (2,3-epoxypropyl) sulfide, bis (2,3-epoxypropyl) disulfide, bis (2,3-epoxypropylthio). ) Methane, 1,2-bis (2,3-epoxypropylthio) ethane, 1,2-bis (2,3-epoxypropylthio) propane, 1,3-bis (2,3-epoxypropylthio) propane 1,3-bis (2,3-epoxypropylthio) -2-methylpropane, 1,4-bis (2,3-epoxypropylthio) butane, 1,4-bis (2,3-epoxypropylthio) ) -2-Methylbutane, 1,3-bis (2,3-epoxypropylthio) butane, 1,5-bis (2,3-epoxypropylthio) pen 1,5-bis (2,3-epoxypropylthio) -2-methylpentane, 1,5-bis (2,3-epoxypropylthio) -3-thiapentane, 1,6-bis (2,3 -Epoxypropylthio) hexane, 1,6-bis (2,3-epoxypropylthio) -2-methylhexane, 3,8-bis (2,3-epoxypropylthio) -3,6-dithiaoctane, 1, 2,3-tris (2,3-epoxypropylthio) propane, 2,2-bis (2,3-epoxypropylthio) -1,3-bis (2,3-epoxypropylthiomethyl) propane, 2, 2-bis (2,3-epoxypropylthiomethyl) -1- (2,3-epoxypropylthio) butane, 1,5-bis (2,3-epoxypropylthio) -2- (2,3-epoxy Propylchi Methyl) -3-thiapentane, 1,5-bis (2,3-epoxypropylthio) -2,4-bis (2,3-epoxypropylthiomethyl) -3-thiapentane, 1- (2,3-epoxy Propylthio) -2,2-bis (2,3-epoxypropylthiomethyl) -4-thiahexane, 1,5,6-tris (2,3-epoxypropylthio) -4- (2,3-epoxypropyl) Thiomethyl) -3-thiahexane, 1,8-bis (2,3-epoxypropylthio) -4- (2,3-epoxypropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (2, 3-epoxypropylthio) -4,5-bis (2,3-epoxypropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epoxypropylthio) -4,4-bis ( 2, 3-epoxypropylthiomethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epoxypropylthio) -2,5-bis (2,3-epoxypropylthiomethyl) -3,6-dithiaoctane 1,8-bis (2,3-epoxypropylthio) -2,4,5-tris (2,3-epoxypropylthiomethyl) -3,6-dithiaoctane, 1,1,1-tris [[2 -(2,3-epoxypropylthio) ethyl] thiomethyl] -2- (2,3-epoxypropylthio) ethane, 1,1,2,2-tetrakis [[2- (2,3-epoxypropylthio) Ethyl] thiomethyl] ethane, 1,11-bis (2,3-epoxypropylthio) -4,8-bis (2,3-epoxypropylthiomethyl) -3,6,9-trithiaundecane, 1,11 Bis (2,3-epoxypropylthio) -4,7-bis (2,3-epoxypropylthiomethyl) -3,6,9-trithiaundecane, 1,11-bis (2,3-epoxypropylthio) ) -5,7-bis (2,3-epoxypropylthiomethyl) -3,6,9-trithiaundecane and the like chain aliphatic 2,3-epoxypropylthio compounds, and

  1,3-bis (2,3-epoxypropylthio) cyclohexane, 1,4-bis (2,3-epoxypropylthio) cyclohexane, 1,3-bis (2,3-epoxypropylthiomethyl) cyclohexane, 1 , 4-bis (2,3-epoxypropylthiomethyl) cyclohexane, 2,5-bis (2,3-epoxypropylthiomethyl) -1,4-dithiane, 2,5-bis [[2- (2, Cyclic epoxy such as 3-epoxypropylthio) ethyl] thiomethyl] -1,4-dithiane, 2,5-bis (2,3-epoxypropylthiomethyl) -2,5-dimethyl-1,4-dithiane A 2,3-epoxypropylthio compound, and

1,2-bis (2,3-epoxypropylthio) benzene, 1,3-bis (2,3-epoxypropylthio) benzene, 1,4-bis (2,3-epoxypropylthio) benzene, 1, 2-bis (2,3-epoxypropylthiomethyl) benzene, 1,3-bis (2,3-epoxypropylthiomethyl) benzene, 1,4-bis (2,3-epoxypropylthiomethyl) benzene, bis [4- (2,3-epoxypropylthio) phenyl] methane, 2,2-bis [4- (2,3-epoxypropylthio) phenyl] propane, bis [4- (2,3-epoxypropylthio) Aromatic 2 such as phenyl] sulfide, bis [4- (2,3-epoxypropylthio) phenyl] sulfone, 4,4′-bis (2,3-epoxypropylthio) biphenyl , 3-epoxypropylthio compound,
Monofunctional epoxy compounds such as ethylene oxide, propylene oxide, glycidol, epichlorohydrin,

  Bis (2,3-epoxypropyl) ether, bis (2,3-epoxypropyloxy) methane, 1,2-bis (2,3-epoxypropyloxy) ethane, 1,2-bis (2,3-epoxy) Propyloxy) propane, 1,3-bis (2,3-epoxypropyloxy) propane, 1,3-bis (2,3-epoxypropyloxy) -2-methylpropane, 1,4-bis (2,3 -Epoxypropyloxy) butane, 1,4-bis (2,3-epoxypropyloxy) -2-methylbutane, 1,3-bis (2,3-epoxypropyloxy) butane, 1,5-bis (2, 3-epoxypropyloxy) pentane, 1,5-bis (2,3-epoxypropyloxy) -2-methylpentane, 1,5-bis (2,3-epoxypropyloxy) 3-thiapentane, 1,6-bis (2,3-epoxypropyloxy) hexane, 1,6-bis (2,3-epoxypropyloxy) -2-methylhexane, 3,8-bis (2,3- Epoxypropyloxy) -3,6-dithiaoctane, 1,2,3-tris (2,3-epoxypropyloxy) propane, 2,2-bis (2,3-epoxypropyloxy) -1,3-bis ( 2,3-epoxypropyloxymethyl) propane, 2,2-bis (2,3-epoxypropyloxymethyl) -1- (2,3-epoxypropyloxy) butane, 1,5-bis (2,3- Epoxypropyloxy) -2- (2,3-epoxypropyloxymethyl) -3-thiapentane, 1,5-bis (2,3-epoxypropyloxy) -2,4-bis (2, -Epoxypropyloxymethyl) -3-thiapentane, 1- (2,3-epoxypropyloxy) -2,2-bis (2,3-epoxypropyloxymethyl) -4-thiahexane, 1,5,6-tris (2,3-epoxypropyloxy) -4- (2,3-epoxypropyloxymethyl) -3-thiahexane, 1,8-bis (2,3-epoxypropyloxy) -4- (2,3-epoxy Propyloxymethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epoxypropyloxy) -4,5-bis (2,3-epoxypropyloxymethyl) -3,6-dithiaoctane, 1, 8-bis (2,3-epoxypropyloxy) -4,4-bis (2,3-epoxypropyloxymethyl) -3,6-dithiaoctane, 1,8-bis ( 2,3-epoxypropyloxy) -2,5-bis (2,3-epoxypropyloxymethyl) -3,6-dithiaoctane, 1,8-bis (2,3-epoxypropyloxy) -2,4 5-tris (2,3-epoxypropyloxymethyl) -3,6-dithiaoctane, 1,1,1-tris [[2- (2,3-epoxypropyloxy) ethyl] thiomethyl] -2- (2, 3-epoxypropyloxy) ethane, 1,1,2,2-tetrakis [[2- (2,3-epoxypropyloxy) ethyl] thiomethyl] ethane, 1,11-bis (2,3-epoxypropyloxy) -4,8-bis (2,3-epoxypropyloxymethyl) -3,6,9-trithiaundecane, 1,11-bis (2,3-epoxypropyloxy) -4,7-bis 2,3-epoxypropyloxymethyl) -3,6,9-trithiaundecane, 1,11-bis (2,3-epoxypropyloxy) -5,7-bis (2,3-epoxypropyloxymethyl) Chain aliphatic 2,3-epoxypropyloxy compounds such as -3,6,9-trithiaundecane, and

  1,3-bis (2,3-epoxypropyloxy) cyclohexane, 1,4-bis (2,3-epoxypropyloxy) cyclohexane, 1,3-bis (2,3-epoxypropyloxymethyl) cyclohexane, 1 , 4-bis (2,3-epoxypropyloxymethyl) cyclohexane, 2,5-bis (2,3-epoxypropyloxymethyl) -1,4-dithiane, 2,5-bis [[2- (2, Cyclic epoxy such as 3-epoxypropyloxy) ethyl] thiomethyl] -1,4-dithiane, 2,5-bis (2,3-epoxypropyloxymethyl) -2,5-dimethyl-1,4-dithiane 2,3-epoxypropyloxy compounds, and

  1,2-bis (2,3-epoxypropyloxy) benzene, 1,3-bis (2,3-epoxypropyloxy) benzene, 1,4-bis (2,3-epoxypropyloxy) benzene, 1, 2-bis (2,3-epoxypropyloxymethyl) benzene, 1,3-bis (2,3-epoxypropyloxymethyl) benzene, 1,4-bis (2,3-epoxypropyloxymethyl) benzene, bis [4- (2,3-epoxypropyloxy) phenyl] methane, 2,2-bis [4- (2,3-epoxypropyloxy) phenyl] propane, bis [4- (2,3-epoxypropyloxy) Phenyl] sulfide, bis [4- (2,3-epoxypropyloxy) phenyl] sulfone, 4,4′-bis (2,3-epoxypropyloxy) It can be exemplified aromatic 2,3-epoxypropyloxy compounds such biphenyl, but is not limited only to the exemplified compounds.

  Next, specific examples of usable polythiol compounds 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, thiomalic acid bis (2-mercaptoethyl ester), 2,3- Dimercapto-1-propanol (2-mercaptoacetate), 2,3-dimercap To-1-propanol (3-mercaptopropionate), diethylene glycol bis (2-mercaptoacetate), diethylene glycol bis (3-mercaptopropionate), 1,2-dimercaptopropyl methyl ether, 2,3-dimercapto Propyl 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) aliphatic such as methane polythiol compound,

  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 polythiols 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-mercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-mercapto-3,6,9-trithiaundecane, 5,7-dimercaptomethyl-1 , 11-mercapto-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, 2,5-di Lucapto-1,4-dithiane, 2,5-dimercaptomethyl-1,4-dithiane, 2,5-dimercaptomethyl-2,5-dimethyl-1,4-dithiane, bis (mercaptomethyl) disulfide, bis (Mercaptoethyl) disulfide, aliphatic polythiol compounds containing sulfur atoms in addition to mercapto groups such as bis (mercaptopropyl) disulfide, and esters of these thioglycolic acid and mercaptopropionic acid,

  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 Dibutyl acid bis (2-mercaptoethyl ester), thiodiglycolic acid bis (2,3-dimercaptopropyl ester), thiodipropionic acid bis (2,3-dimercaptopropyl ester), dithioglycolic acid bis (2, 3-dimercaptopropyl ester), dithiodipropionic acid bis (2,3-dimercaptopropyl ester) and other mercapto groups, aliphatic polythiol compounds containing a sulfur atom and an ester bond, and 3,4-thiophenedithiol , Heterocyclic compounds containing a sulfur atom in addition to a mercapto group such as 2,5-dimercapto-1,3,4-thiadiazole,

  2-mercaptoethanol, 3-mercapto-1,2-propanediol, glycerol 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-mercapto Propionate), pentaerythritol mono (3-mercaptopropionate), pentaerythritol bis (3-mercaptopropionate), pentaerythritol tris (thioglycolate), dipentaerythritol pentakis (3 Mercaptopropionate), hydroxymethyl - tris (mercaptoethylthiomethyl) 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 include compounds having an orthotetrathiocarbonate skeleton, but are not limited to these exemplary compounds. These exemplary compounds may be used alone or in combination of two or more.

  Among these polythiol compounds, it is preferable to select an aliphatic polythiol 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 refractive index requirements, it is 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. A dithioacetal skeleton, a dithioketal skeleton, an orthotrithioformate skeleton More preferably, a compound having an orthotetrathiocarbonate skeleton is selected. In order to increase the three-dimensional crosslinkability in consideration of the heat resistance of the resulting resin, it is particularly preferable to select one or more polythiol compounds having three or more functions. As the most preferred polythiol in the above points, 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-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 (me Captomethylthio) ethyl) -1,3-dithietane is a compound selected from at least one compound in the case of three or more functional groups and at least one compound selected from at least one compound and three or more functional compounds in the case of two or more functional groups. It is done.

  Examples of the resin having a thiourethane bond or a thioester bond in the polymer chain include those obtained by producing a polymer from a compound having a thiourethane bond or a thioester bond in the molecule. About the compound which has a thioester bond, what is necessary is just to use the compound which has a thioester bond among the above-mentioned exemplary compounds. In addition, there is a case where a thiourethane bond is formed by polymerization without having a thiourethane bond in advance. A typical example thereof is a resin obtained by polymerizing and curing the aforementioned polythiol compound and polyisocyanate compound.

  In the present invention, specific examples of polyiso (thio) cyanate compounds that can be used for producing a sulfur atom-containing resin include hexamethylene diisocyanate, 2,2-dimethylpentane diisocyanate, and 2,2,4-trimethyl. Hexane diisocyanate, butene diisocyanate, 1,3-butadiene-1,4-diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, 1,6,11-undecatriisocyanate, 1, 3,6-hexamethylene triisocyanate, 1,8-diisocyanato-4-isocyanatomethyloctane, bis (isocyanatoethyl) carbonate, bis (isocyanatoethyl) ether, lysine diisocyanatomethyl ester, lysine triisocyanate Xylylene diisocyanate, (Isocyanatoethyl) benzene, bis (isocyanatopropyl) benzene, α, α, α ', α'-tetramethylxylylene diisocyanate, bis (isocyanatobutyl) benzene, bis (isocyanatomethyl) naphthalene, bis Aliphatic polyisocyanate compounds such as (isocyanatomethyl) diphenyl ether, bis (isocyanatoethyl) phthalate, mesityrylene triisocyanate, 2,6-di (isocyanatomethyl) furan,

  Isophorone diisocyanate, bis (isocyanatomethyl) cyclohexane, dicyclohexylmethane diisocyanate, cyclohexane diisocyanate, methylcyclohexane diisocyanate, dicyclohexyldimethylmethane diisocyanate, 2,2-dimethyldicyclohexylmethane diisocyanate, 2, 5-bis (isocyanatomethyl) bicyclo- [2,2,1] -heptane, 2,6-bis (isocyanatomethyl) bicyclo- [2,2,1] -heptane, 3,8-bis (isocyanato Fats such as methyl) tricyclodecane, 3,9-bis (isocyanatomethyl) tricyclodecane, 4,8-bis (isocyanatomethyl) tricyclodecane, 4,9-bis (isocyanatomethyl) tricyclodecane Cyclic polyisocyanate compounds,

  Phenylene diisocyanate, tolylene diisocyanate, ethylphenylene diisocyanate, isopropylphenylene diisocyanate, dimethylphenylene diisocyanate, diethylphenylene diisocyanate, diisopropylphenylene diisocyanate, trimethylbenzene triisocyanate, benzene triisocyanate , Biphenyl diisocyanate, toluidine diisocyanate, 4,4-diphenylmethane diisocyanate, 3,3-dimethyldiphenylmethane-4,4-diisocyanate, bibenzyl-4,4-diisocyanate, bis (isocyanatophenyl ) Ethylene, 3,3-dimethoxybiphenyl-4,4-diisocyanate, phenylisocyanatoethyl isocyanate, hexahydrobenzene diiso Annatto, aromatic polyisocyanate compound such as hexahydroterephthalic diphenylmethane-4,4-diisocyanate,

  Bis (isocyanatomethyl) sulfide, bis (isocyanatoethyl) sulfide, bis (isocyanatopropyl) sulfide, bis (isocyanatohexyl) sulfide, bis (isocyanatomethyl) sulfone, bis (isocyanatomethyl) disulfide, bis ( Isocyanatoethyl) disulfide, bis (isocyanatopropyl) disulfide, bis (isocyanatomethylthio) methane, bis (isocyanatoethylthio) methane, bis (isocyanatoethylthio) ethane, bis (isocyanatomethylthio) ethane, 1, Sulfur-containing aliphatic isocyanate compounds such as 5-diisocyanato-2-isocyanatomethyl-3-thiapentane,

  Diphenyl sulfide-2,4-diisocyanate, diphenyl sulfide-4,4-diisocyanate, 3,3-dimethoxy-4,4-diisocyanatodibenzylthioether, bis (4-isocyanatomethylbenzene) sulfide, Aromatic sulfide isocyanate compounds such as 4,4-methoxybenzenethioethylene glycol-3,3-diisocyanate,

  Diphenyl disulfide-4,4-diisocyanate, 2,2-dimethyldiphenyl disulfide-5,5-diisocyanate, 3,3-dimethyldiphenyl disulfide-5,5-diisocyanate, 3,3-dimethyldiphenyl disulfide 6,6-diisocyanate, 4,4-dimethyldiphenyl disulfide-5,5-diisocyanate, 3,3-dimethoxydiphenyl disulfide-4,4-diisocyanate, 4,4-dimethoxydiphenyl disulfide-3 Aromatic disulfide-based isocyanate compounds such as 1,3-diisocyanate, sulfur-containing heterocyclic compounds such as 2,5-diisocyanatothiophene, 2,5-bis (isocyanatomethyl) thiophene,

  In addition, 2,5-diisocyanatotetrahydrothiophene, 2,5-bis (isocyanatomethyl) tetrahydrothiophene, 3,4-bis (isocyanatomethyl) tetrahydrothiophene, 2,5-diisocyanato-1,4- Dithiane, 2,5-bis (isocyanatomethyl) -1,4-dithiane, 4,5-diisocyanato-1,3-dithiolane, 4,5-bis (isocyanatomethyl) -1,3-dithiolane, 4, Examples thereof include 5-bis (isocyanatomethyl) -2-methyl-1,3-dithiolane, but are not limited to the exemplified compounds. In addition, halogen-substituted products such as chlorine-substituted products, bromine-substituted products, alkyl-substituted products, alkoxy-substituted products, nitro-substituted products, prepolymer-modified products with polyhydric alcohols, carbodiimide-modified products, urea-modified products, and burette-modified products. Bodies, dimerization or trimerization reaction products and the like can also be used.

  Specific examples of the isothiocyanate compound include methyl isothiocyanate, ethyl isothiocyanate, n-propyl thioisocyanate, isopropyl isothiocyanate, n-butyl isothiocyanate, sec-butyl isothiocyanate, tert- Butyl isothiocyanate, pentyl isothiocyanate, hexyl isothiocyanate, heptyl isothiocyanate, octyl isothiocyanate, decyl isothiocyanate, lauryl isothiocyanate, myristyl isothiocyanate, octadecyl isothiocyanate, 3-pentyl isothiocyanate Narate, 2-ethylhexyl isothiocyanate, 2,3-dimethylcyclohexyl isothiocyanate, 2-methoxyphenyl isothiocyanate, 4-methoxyphenyl Nyl isothiocyanate, α-methylbenzyl isothiocyanate, phenylethyl isothiocyanate, phenyl isothiocyanate, o-, m-, or p-tolyl isothiocyanate, cyclohexyl isothiocyanate, benzyl isothiocyanate, isothiocyan Monofunctional isothiocyanate compounds such as natomethylbicycloheptane,

  Aliphatic polyisothiocyanate compounds such as 1,6-diisothiocyanatohexane and p-phenyleneisopropylidenediisothiocyanate,

Cycloaliphatic diisothiocyanate, alicyclic polyisothiocyanate compounds such as diisothiocyanatomethylbicycloheptane,

  1,2-diisothiocyanatobenzene, 1,3-diisothiocyanatobenzene, 1,4-diisothiocyanatobenzene, 2,4-diisothiocyanatotoluene, 2,5-diisothiocyanato-m Xylene, 4,4-diisothiocyanato-1,1-biphenyl, 1,1-methylenebis (4-isothiocyanatobenzene), 1,1-methylenebis (4-isothiocyanato-2-methylbenzene), 1, 1-methylenebis (4-isothiocyanato-3-methylbenzene), 1,1- (1,2-ethanediyl) bis (isothiocyanatobenzene), 4,4-diisothiocyanatobenzophenone, 4,4-diisothiocyana -3,3-dimethylbenzophenone, diphenyl ether-4,4-diisothiocyanate, diphenylamine-4,4-di Aromatic isothiocyanate compounds such as soothiocyanate, further 1,3-benzenedicarbonyldiisothiocyanate, 1,4-benzenedicarbonyldiisothiocyanate, (2,2-pyridine) -4,4-di Examples include carbonyl isothiocyanate compounds such as carbonyl diisothiocyanate, but are not limited to the exemplified compounds.

  Specific examples of the isothiocyanate compound containing one or more sulfur atoms in addition to the isothiocyanato group include thiobis (3-isothiocyanatopropane), thiobis (2-isothiocyanatoethane), dithiobis (2- Sulfur-containing aliphatic isothiocyanate compounds such as isothiocyanatoethane), 1-isothiocyanato-4-[(2-isothiocyanato) sulfonyl] benzene, thiobis (4-isothiocyanatobenzene), sulfonylbis (4-isothiocyanato) Benzene), sulfur-containing aromatic isothiocyanate compounds such as dithiobis (4-isothiocyanatobenzene), 2,5-diisothiocyanatothiophene, 2,5-diisothiocyanato-1,4-dithiane, etc. Although sulfur heterocyclic compounds etc. are mentioned, it is not limited to an exemplary compound. Furthermore, halogen-substituted products such as chlorine-substituted products and bromine-substituted products, alkyl-substituted products, alkoxy-substituted products, nitro-substituted products, prepolymer-modified products with polyhydric alcohols, carbodiimide-modified products, urea-modified products, and burette-modified products. Bodies, dimerization or trimerization reaction products can also be used.

  Furthermore, the isothiocyanate compound which has an isocyanato group is also mentioned. Aliphatic and alicyclic compounds such as 1-isocyanato-6-isothiocyanatohexane, 1-isocyanato-4-isothiocyanatocyclohexane, 1-isocyanato-4-isothiocyanatobenzene, 4-methyl-3-isocyanato- Aromatic compounds such as 1-isothiocyanatobenzene, heterocyclic compounds such as 2-isocyanato-4,6-diisothiocyanato-1,3,5-triazine, and 4-isocyanato-4′-isothi In addition to isothiocyanato groups such as isocyanatodiphenyl sulfide and 2-isocyanato-2′-isothiocyanatodiethyl disulfide, compounds containing sulfur atoms are not limited to the exemplified compounds. Furthermore, halogen-substituted products such as chlorine-substituted products and bromine-substituted products, alkyl-substituted products, alkoxy-substituted products, nitro-substituted products, prepolymer-modified products with polyhydric alcohols, carbodiimide-modified products, urea-modified products, and burette-modified products. Bodies, dimerization or trimerization reaction products can also be used.

  Next, modification of the sulfur atom-containing resin of the present invention will be described. Adjustment of optical properties such as refractive index and Abbe number of the sulfur atom-containing resin of the present invention, hue, light resistance and weather resistance, heat resistance, impact resistance, hardness, specific gravity, linear expansion coefficient, polymerization shrinkage, water absorption In order to improve resin properties and handling properties, such as adjusting various physical properties such as hygroscopicity, chemical resistance and viscoelasticity, adjusting transmittance and transparency, etc., known compounds etc. are added to stabilizers and resin modifiers. Adding as a quality agent may be preferable for the purpose of obtaining a good resin. Examples of compounds that can be added to improve stability such as polymerization stability and thermal stability include compounds such as polymerization retarders, polymerization inhibitors, oxygen scavengers, and antioxidants. I don't mean.

  Specific examples of the resin modifier include known thietane compounds, dithiethane compounds, trithiethane compounds, thiolane compounds, dithiolane compounds, trithiolane compounds, dithian compounds, trithian compounds, amine compounds, hydroxy compounds including phenolic compounds, mercapto Organic acids, organic acids and anhydrides, amino acids and mercaptoamines, episulfide compounds and epoxy compounds other than the main components constituting the aforementioned sulfur atom-containing resin of the present invention, thiol compounds, iso (thio) cyanate Examples thereof include compounds, olefin compounds including (meth) acrylates, cyclic organic compounds having inorganic atoms or sulfur atoms or selenium atoms. Among these resin modifiers, olefins including epoxy compounds, iso (thio) cyanate compounds, and (meth) acrylates are more preferable for overcoming the brittleness of the resulting resin and improving impact resistance. Amine compounds, thiol compounds, and phenol compounds are preferred for improving the hue of the resulting resin. Among these, a compound having one or more SH groups is more preferable. A compound having two or more SH groups and having a sulfide bond is more preferable. Cyclic organic compounds and inorganic compounds having a sulfur atom or a selenium atom are preferable for improving the refractive index of the resin, and in particular, when a single sulfur is used, the operation is simple and the effect of improving the refractive index is particularly large. preferable. As a single sulfur addition amount, it is preferable to use 3 to 30% by weight based on the whole raw material composition. Considering the heat resistance and brittleness of the resulting resin, it is preferable to use 5 to 25% by weight.

  Furthermore, the above-mentioned several types of resin modifiers may be used alone or in combination of two or more. The amount of the resin modifier added varies depending on the structure of the compound constituting the raw material composition and cannot be generally limited, but is usually in the range of 0.001 wt% to 50 wt% with respect to the raw material composition. It is possible to add. Considering optical properties of the obtained resin, it is preferable that the addition amount is 0.005 wt% to 25 wt%. If it is 0.01 wt%-15 wt%, it is more preferable.

  The type and amount of the curing catalyst for obtaining the sulfur atom-containing resin of the present invention, the type and proportion of the monomer vary depending on the structure of the compound constituting the raw material composition, and cannot be generally limited. Types of amines other than resin modifiers, phosphines, organic acids and salts thereof, esters, anhydrides, inorganic acids, quaternary ammonium salts, quaternary phosphonium salts, tertiary sulfonium salts, secondary iodonium salts Lewis acids, radical polymerization catalysts, cationic polymerization catalysts and the like are usually used.

  Specific examples of the curing catalyst include triethylamine, tri-n-butylamine, tri-n-hexylamine, N, N-diisopropylethylamine, triethylenediamine, triphenylamine, N, N-dimethylethanolamine, N, N-diethylethanolamine. N, N-dibutylethanolamine, triethanolamine, N-ethyldiethanolamine, N, N-dimethylbenzylamine, N, N-diethylbenzylamine, tribenzylamine, N-methyldibenzylamine, N, N-dimethyl Cyclohexylamine, N, N-diethylcyclohexylamine, N, N-dimethylbutylamine, N-methyldicyclohexylamine, N-methylmorpholine, N-isopropylmorpholine, pyridine, quinoline, N, N-dimethylanily N, N-diethylaniline, α-, β-, or γ-picoline, 2,2′-bipyridyl, 1,4-dimethylpiperazine, dicyandiamide, tetramethylethylenediamine, hexamethylenetetramine, 1,8-diazabicyclo (5 , 4,0) -7-undecene, aliphatic and aromatic tertiary amines such as 2,4,6-tris (N, N-dimethylaminomethyl) phenol,

  Trimethylphosphine, triethylphosphine, tri-n-propylphosphine, triisopropylphosphine, tri-n-butylphosphine, triphenylphosphine, tribenzylphosphine, 1,2-bis (diphenylphosphino) ethane, 1,2-bis (dimethylphosphine) Fino) phosphines such as ethane,

  Trifluoroacetic acid, trichloroacetic acid, trifluoroacetic anhydride, ethyl trifluoroacetate, sodium trifluoroacetate, trihalogenoacetic acid and its ester, anhydride, salt, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoro Trihalogenomethanesulfonic acid and its esters, anhydrides, salts, hydrochloric acid, sulfuric acid, nitric acid and the like, such as lomethanesulfonic anhydride, ethyl trifluoromethanesulfonate, sodium trifluoromethanesulfonate,

Quaternary ammonium salts such as tetramethylammonium chloride, tetrabutylammonium chloride, tetrabutylammonium bromide,

Quaternary phosphonium salts such as tetramethylphosphonium chloride, tetrabutylphosphonium chloride, tetrabutylphosphonium bromide,

Tertiary sulfonium salts such as trimethylsulfonium bromide and tributylsulfonium bromide, secondary iodium salts such as diphenyliodonium bromide, dimethyltin dichloride, dibutyltin dichloride, dibutyltin dilaurate, dibutyltin diacetate, tetrachlorotin, dibutyltin oxide , Diacetoxytetrabutyl distanoxane, zinc chloride, acetylacetone zinc, aluminum chloride, aluminum fluoride, triphenylaluminum, acetylacetone aluminum, isopropoxide aluminum, tetrachlorotitanium and its complex, tetraiodotitanium, dichlorotitanium diisopropoxy , Titanium-based alkoxides such as titanium isopropoxide, calcium acetate, boron trifluoride, boron trifluoride diethyl ether complex, boron trifluoride Lysine complex, boron trifluoride ethylamine complex, boron trifluoride acetic acid complex, boron trifluoride phosphate complex, boron trifluoride t-butylmethyl ether complex, boron trifluoride dibutyl ether complex, boron trifluoride THF complex Lewis acids such as boron trifluoride methylsulfide complexes, boron trifluoride phenol complexes, etc., boron trifluoride complexes and boron trichloride complexes, etc.

  2,2′-azobis (2-cyclopropylpropionitrile), 2,2′-azobis (4-methoxy-2,4-dimethylvaleronitrile), 2,2′-azobis (2,4-dimethylvaleronitrile) ), Radical polymerization catalysts such as t-butylperoxy-2-ethylhexanoate, n-butyl-4,4′-bis (t-butylperoxy) valerate, t-butylperoxybenzoate,

Diphenyliodonium hexafluorophosphoric acid, diphenyliodonium hexafluoroarsenic acid, diphenyliodonium hexafluoroantimony, triphenylsulfonium tetrafluoroboric acid, triphenylsulfonium hexafluorophosphoric acid, triphenylsulfonium hexafluoroarsenic acid, (tolylcumyl) iodonium tetrakis (pentafluoro) Examples thereof include cationic polymerization catalysts such as phenyl) borate, but are not limited to the exemplified compounds.

  The above curing catalysts may be used singly or in combination of two or more. When two or more of these curing catalysts having different reactivity are used in combination, the handling property of the monomer, the optical properties of the resulting resin, the hue It is preferable because transparency and optical distortion (pulse separation) may be improved.

  Among the above compounds, preferred are tertiary amine compounds and phosphine compounds, quaternary ammonium salts, quaternary phosphonium salts, dimethyltin dichloride, dibutyltin dichloride, dibutyltin dilaurate, dibutyltin diacetate, tetrachlorotin, dibutyl. Organotin compounds such as tin oxide, diacetoxytetrabutyl distanoxane, diphenyliodonium hexafluorophosphoric acid, diphenyliodonium hexafluoroarsenic acid, diphenyliodonium hexafluoroantimony, triphenylsulfonium tetrafluoroboric acid, triphenylsulfonium hexafluorophosphoric acid Cation heavy, such as triphenylsulfonium hexafluoroarsenate, (tolylcumyl) iodonium tetrakis (pentafluorophenyl) borate Is the catalysts.

  Although the addition amount of a curing catalyst is used in 0.001-10 wt% with respect to the total weight of a raw material composition, it is preferable to use it in 0.005-5 wt%. More preferably, it is used in the range of 0.01 to 1 wt%. When the addition amount of the curing catalyst is within this range, it is possible to produce a resin that is cured well, the pot life is maintained, and the resin obtained has good transparency and optical properties. There is. The curing catalyst may be added directly to the episulfide compound of the present invention, or may be added after being dissolved or dispersed in another compound constituting the raw material composition, but added after being dissolved or dispersed in another compound. May give better results. Furthermore, when a curing catalyst is added, a favorable result may be obtained if it is carried out in a nitrogen atmosphere or a dry gas atmosphere. Furthermore, in order to further draw out the performance of the obtained resin, it is preferable that the amount of unreacted functional groups remaining in the resin is 0.5 wt% or less with respect to the total weight of the resin. More preferably, it is 0.3 wt% or less.

  When molding the sulfur atom-containing resin of the present invention, as in the known molding method depending on the purpose, other stabilizers, resin modifiers, chain extenders, cross-linking agents, HALS systems are representative. 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 Various substances such as an external mold release agent or internal mold release agent represented by a system, and an adhesion improver may be added.

  Examples of the internal release agent used in the present invention may be any as long as they have a releasability effect and do not impair physical properties such as transparency of the resin, but preferably a surfactant. Is used. Surfactants that are preferably used as release agents are roughly classified into ionic surfactants and nonionic surfactants, and ionic surfactants are classified into anionic surfactants and cationic surfactants. The Examples of anionic surfactants include sulfate ester, sulfonate ester, and phosphate ester. Of these, phosphate ester surfactants are preferred, and acidic phosphate ester anionic surfactants are particularly preferred. Is preferred. In addition, the internal mold release agent mentioned here also includes those exhibiting a mold release effect among the various catalysts described above, and may include, for example, quaternary ammonium salts and quaternary phosphonium salts. These internal release agents may be used alone or in combination of two or more. These are appropriately selected from monomer combinations, polymerization conditions, economy, and ease of handling. The amount of the internal mold release agent used is usually in the range of 1 to 10,000 ppm based on the total weight of the gun composition, either alone or as a mixture of two or more. When the addition amount is 1 ppm or more, the release ability is good, and when it is 10000 ppm or less, release from the mold during the casting polymerization is suppressed, and deterioration of surface accuracy of the lens surface and white turbidity of the obtained lens are prevented. Can do.

  The addition amount of various additives other than the internal mold release agent that enables the above addition varies depending on the type, structure, and effect of each additive and cannot be generally limited, but usually the total weight of the raw material composition Is used in the range of 0.001 to 10 wt%, but is preferably used in the range of 0.01 to 5 wt%. The dye is preferably used in the range of 1 ppb to 100 ppm instead of this range. Within these ranges, a well-cured resin can be produced, and a resin having good transparency and optical properties may be obtained.

  A typical polymerization method for obtaining the sulfur atom-containing resin (for example, plastic lens) of the present invention is cast polymerization. That is, the raw material composition of the sulfur atom-containing resin of the present invention is injected between molding molds held by a gasket or a tape. The injection operation is preferably performed in a normal atmosphere as long as there is no particular problem, but better results may be obtained if it is performed in a nitrogen atmosphere or a dry gas atmosphere. The inside of the mold may be replaced with nitrogen gas or dry gas in advance. Here, if necessary, the raw material composition may be mixed with a curing catalyst and a resin modifier, or may be previously subjected to operations such as depressurization at 10 kPa or less such as defoaming operation, filter filtration and the like. Subsequently, it can be cured by heating in a heatable apparatus such as an oven or water, and the sulfur atom-containing resin can be taken out.

  The polymerization method and polymerization conditions for obtaining the sulfur atom-containing resin of the present invention can be appropriately selected depending on the type and amount of the curing catalyst used and the type and ratio of the monomer.

  The heat polymerization conditions of the raw material composition of the present invention injected into the molding mold vary depending on the composition and structure of the raw material composition, and are largely dependent on the type of resin modifier, the type of curing catalyst, the shape of the molding mold, etc. Although the polymerization temperature is approximately -50 to 200 ° C, the polymerization temperature is preferably -20 to 150 ° C. It is more preferable in the temperature range of 0 ° C to 130 ° C. The polymerization time is 0.01 to 100 hours, preferably 0.05 to 50 hours. More preferably, it is performed for 0.1 to 25 hours. In some cases, it is possible to perform polymerization by combining the temperature conditions with programs such as low temperature, temperature increase, and temperature decrease.

  Furthermore, the raw material composition of the sulfur atom-containing resin of the present invention can shorten the polymerization time by irradiating energy rays such as electron beams and ultraviolet rays. In this case, a curing catalyst such as a radical polymerization catalyst or a cationic polymerization catalyst described as the above-described curing catalyst may be added. Moreover, about the cured resin taken out, you may perform processes, such as annealing, as needed. The annealing conditions vary depending on the structure of the compound constituting the raw material composition to be cured, the structure of the resin to be obtained, and the like, and cannot be generally limited, but are usually performed at 30 to 200 ° C., but are performed at 50 to 150 ° C. And preferred. More preferably, it is carried out at 70 ° C to 130 ° C.

  Furthermore, the sulfur atom-containing resin of the present invention can be obtained as a molded product of various forms by changing the molding mold during the casting polymerization, and has a high refractive index such as a spectacle lens, a camera lens, and a light emitting diode (LED). And can be used for various applications that require a resin that takes advantage of transparency. In particular, it is suitable as an optical material such as a spectacle lens and a camera lens.

  In the lens using the sulfur atom-containing resin of the present invention thus obtained, if necessary, antireflection, imparting high hardness, improving abrasion resistance, improving chemical resistance, imparting antifogging properties, or fashionability. In order to improve the application, physical or chemical treatments such as surface polishing, antistatic treatment, hard coat treatment, non-reflective coat treatment, and dyeing treatment can be performed.

Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to the following examples. In addition, among the performance tests of the obtained sulfur atom-containing resin, the optical properties and other physical properties were evaluated by the following test methods.
Refractive index (ne) Abbe number (νe): Measured at 20 ° C. using a Purfrich refractometer.
-Heat resistance: Tg in the TMA penetration method (50 g load, pin tip 0.5 mmφ) was regarded as heat resistance.
-Resin transparency: Observed visually under a high-pressure mercury lamp. Cloudy ones were marked with x, and ones with excellent transparency were marked with ◯.
-Water absorption rate: The water absorption rate was measured according to JIS K7209. The measurement temperature was 23 ° C. and the measurement period was 24 hours. The test piece used was a square with a side of 50 ± 1 mm and a thickness of 3 ± 0.2 mm.
-Strength: Strength was evaluated by bending strength (25 ° C). The test was performed using a tester INSTRON 5582, a test speed of 1.2 mm / min, and a sample shape of approximately 25 mm × 65 mm × 3 mm. After measuring the bending strength of the test piece prepared according to the following examples, assuming a post-process, it was immersed in warm water at 90 ° C. for 10 minutes, then dried at room temperature, and then reheated at 120 ° C. for 3 hours. After the test, the test piece was incubated at room temperature for 30 minutes and then the bending strength of the test piece was measured again to confirm a change in strength. Among the ten test pieces prepared, three or more test pieces having a strength decrease of 20 MPa or more were evaluated as x, and two or less test pieces were evaluated as ◯.

[Example 1]
270 g of 1,1,3,3-tetrakis (2,3-epithiopropyldithiomethylthio) propane and 30.0 g of 1,1,3,3-tetrakis (mercaptomethylthio) propane in a beaker at room temperature of 20 ° C., UV absorption After mixing and dissolving 0.3 g of Biosorb 583 (manufactured by Kyodo Pharmaceutical Co., Ltd.) as an agent, 0.6 g of N, N-dimethylcyclohexylamine was added as a curing catalyst and the mixture was degassed for 0.4 hours under reduced pressure. Then, it inject | poured into the mold for test piece preparation which consists of a glass mold and a gasket. The mold was gradually heated from 30 ° C. to 120 ° C. and polymerized in 24 hours. After completion of the polymerization, the sample was gradually cooled and the test piece was taken out of the mold. The obtained test piece was excellent in transparency and good in appearance without distortion.
When the optical properties of the obtained resin were measured, the refractive index was ne = 1.77 and νe = 30. The water absorption was 0.006%. The intensity change was ○. The results are summarized in Table 1.

[Example 2]
In a beaker at room temperature of 20 ° C., 40.0 g of 1,1,3,3-tetrakis (mercaptomethylthio) propane, 35.0 g of m-xylylene diisocyanate, 0.015 g of dimethyltin diacetate as a curing catalyst, and as an ultraviolet absorber After mixing 0.3 g of Biosorb 583 (manufactured by Kyodo Yakuhin Co., Ltd.) to make a uniform solution, 225 g of 1,1,3,3-tetrakis (2,3-epithiopropyldithiomethylthio) propane and tetra as an internal mold release agent 0.1 g of n-butylphosphonium bromide was added and mixed. The obtained mixed solution was degassed for 0.4 hours under reduced pressure, and then poured into a mold for preparing a test piece comprising a glass mold and a gasket. The mold was gradually heated from 30 ° C. to 120 ° C. and polymerized in 24 hours. After completion of the polymerization, the sample was gradually cooled and the test piece was taken out of the mold. The obtained test piece was excellent in transparency and good in appearance without distortion.
When the optical properties of the obtained resin were measured, the refractive index was ne = 1.75 and νe = 30. The water absorption was 0.009%. The intensity change was ○. The results are summarized in Table 1.

[Example 3]
In a beaker at room temperature of 20 ° C., 30.0 g of 1,1,3,3-tetrakis (mercaptomethylthio) propane, 25.0 g of m-xylylene diisocyanate, 0.010 g of dimethyltin diacetate as a curing catalyst, and as an ultraviolet absorber After mixing 0.3 g of Biosorb 583 (manufactured by Kyodo Yakuhin Co., Ltd.) to make a uniform solution, 225 g of 1,1,3,3-tetrakis (2,3-epithiopropyldithiomethylthio) propane, 20.0 g of sulfur and the inside Tetra-n-butylphosphonium bromide (0.1 g) was added as a release agent and mixed. The obtained mixed solution was degassed for 0.4 hours under reduced pressure, and then poured into a mold for preparing a test piece comprising a glass mold and a gasket. The mold was gradually heated from 30 ° C. to 120 ° C. and polymerized in 24 hours. After completion of the polymerization, the sample was gradually cooled and the test piece was taken out of the mold. The obtained test piece was excellent in transparency and good in appearance without distortion.
When the optical properties of the obtained resin were measured, the refractive index was ne = 1.76 and νe = 30. The water absorption was 0.008%. The intensity change was ○. The results are summarized in Table 1.

[Comparative Example 1]
280 g of trimethylolpropane tris (2,3-epithiopropylthioglycolate) and 20.0 g of trimethylolpropane tris (thioglycolate) in a beaker at room temperature of 20 ° C., Biosorb 583 (manufactured by Kyodo Yakuhin) as an ultraviolet absorber After mixing and dissolving 0.3 g, after adding 0.6 g of N, N-dimethylcyclohexylamine as a curing catalyst and mixing, the mixture was degassed under reduced pressure for 0.4 hours, and then a test piece comprising a glass mold and a gasket It poured into the mold for preparation. The mold was gradually heated from 30 ° C. to 120 ° C. and polymerized in 24 hours. After completion of the polymerization, the sample was gradually cooled and the test piece was taken out of the mold. The obtained resin was excellent in transparency and good in appearance without distortion.
When the optical properties of the obtained test piece were measured, the refractive index was ne = 1.62 and νe = 42. The water absorption was 0.03%. The intensity change was x. The results are summarized in Table 1.

Claims (5)

A method for suppressing a decrease in strength after post-treatment of an optical material composed of an episulfide-based sulfur atom-containing resin obtained by polymerizing a polymerizable composition containing an episulfide compound and a polythiol compound, wherein the resin is measured according to JIS K7209 And a resin having a water absorption rate of less than 0.01% and 0.0010% or more at a temperature of 25 ° C. for 24 hours. The method according to claim 1, wherein the episulfide-based sulfur atom-containing resin has a refractive index of 1.60 or more. The method according to claim 1 or 2, wherein the polymerizable composition further contains an iso (thio) cyanate compound . The method according to claim 3 , wherein the polymerizable composition further contains elemental sulfur . The method according to claim 1, wherein the optical material is a plastic lens.