JP6095468B2 - Plastic polarizing lens and manufacturing method thereof - Google Patents

Description

  The present invention relates to a plastic polarizing lens and a manufacturing method thereof.

  The polarizing lens can prevent transmission of reflected light. Therefore, it is used to protect eyes by blocking strong reflected light outdoors such as ski resorts and fishing, and to ensure safety by blocking reflected light from oncoming vehicles when driving a car.

  Two types of plastic polarizing lenses have been proposed: a polarizing lens in which a polarizing film is disposed on the surface of a plastic lens material, and a sandwich lens having a polarizing film disposed in the plastic lens material. A polarizing lens in which a polarizing film is arranged on the surface of a plastic lens material (for example, Japanese Patent Laid-Open No. 9-258209 (Patent Document 1)) can reduce the thickness of the lens, but the outer periphery polishing step (in a predetermined shape) There is a serious drawback that the polarizing film is easily peeled off from the lens material in the step of cutting the edge of the lens for alignment.

  So far, the resin applied to the polarizing film constituting the polarizing lens is substantially limited to polyvinyl alcohol. In order to produce a polarizing film, a polyvinyl alcohol film is uniaxially stretched by including iodine or a dichroic dye to form a film having molecular orientation in a uniaxial direction. The manufacturing method of the polarizing lens which consists of a polyvinyl-alcohol polarizing film is disclosed by the international publication 04/099859 pamphlet (patent document 2), for example.

  However, in a polarizing lens manufactured using a polyvinyl alcohol polarizing film, moisture gradually enters from the end portion of the lens, and deterioration progresses from the outer peripheral portion of the lens toward the central portion over time or depending on the environment. There are drawbacks.

  In order to improve the above-mentioned drawbacks, WO 02/072911 (Patent Document 3) uses a lens material made of an impact-resistant polyurethane resin obtained from a diamine and an isocyanate prepolymer, and a polyethylene terephthalate polarizing film. Polarized lenses have been proposed.

  However, this polarizing lens clearly has a polarizing film and has a drawback that many users feel uncomfortable when wearing it. Furthermore, a composition in which a diamine and an isocyanate prepolymer are mixed has a high viscosity and a short pot life, so that it is difficult to inject into a lens casting mold with a polarizing film fixed. It was difficult.

  In International Publication No. 08/018168 (Patent Document 4), layers made of a thiourethane resin obtained by reacting an isocyanate compound and an active hydrogen compound are laminated on both surfaces of a polarizing film made of a thermoplastic polyester. A plastic polarizing lens has been proposed.

  However, this polarizing lens has room for improvement in the occurrence of peeling of the polarizing film in the outer periphery polishing process.

  As described above, the occurrence of peeling of the polarizing film in the outer peripheral polishing process, which is a subsequent process, is suppressed with respect to the plastic polarizing lens, the water resistance is excellent, the discomfort at the time of wearing is suppressed, or the thickness can be reduced. There was a need for plastic polarizing lenses.

Japanese Patent Laid-Open No. 9-258009 International Publication No. 04/099859 Pamphlet International Publication No. 02/073291 Pamphlet International Publication No. 08/018168 Pamphlet

  Furthermore, when manufacturing a large amount of polarized lenses industrially, it is possible to suppress the peeling of the polarized film that occurs when the periphery of the lens after polymerization is polished with an edger or the like, and to produce a polarized lens industrially with a high yield. There has been a demand for a polarizing lens having excellent adhesion between the lens and the plastic lens.

  The present invention has been made in view of the above-described background art, and provides a plastic polarizing lens excellent in processing characteristics and the like and excellent in adhesion between a polarizing film and a plastic lens, and a method for producing the same.

The present invention is described below.
[1] A polarizing film made of thermoplastic polyester;
A coat layer formed on at least one surface of the polarizing film;
A substrate layer made of a thiourethane resin, formed on at least the coat layer of the polarizing film with a coat layer, is laminated,
The said coating layer is a plastic polarizing lens which comprises the aromatic polyester polyol which consists of the structural unit derived from the compound which has a hydroxyl group, and the structural unit derived from aromatic dicarboxylic acid, and urethane-modified isocyanurate.
[2] The plastic polarized lens according to [1], wherein in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid.
[3] The plastic polarizing lens according to [1] or [2], wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.
[4] The plastic polarizing lens according to any one of [1] to [3], wherein the coat layer further includes a curing catalyst.
[5] The plastic polarizing lens according to any one of [1] to [4], wherein the coat layer and the base material layer are sequentially laminated on both surfaces of the polarizing film.
[6] The thiourethane resin is
(A) one or more isocyanate compounds selected from the group consisting of a polyisocyanate compound, an isocyanate compound having an isothiocyanate group, and a polyisothiocyanate compound;
(B) The thiol compound having a hydroxyl group and one or more active hydrogen compounds selected from the group consisting of polythiol compounds are obtained by reacting with each other, according to any one of [1] to [5] Plastic polarizing lens.
[7] plastic polarized lens according to any one of the polarizing film and wherein the polarizing film der Rukoto which is Supplementary form [1] to [6].
[8] The plastic polarizing lens according to any one of [1] to [7], wherein the polarizing film is a polyethylene terephthalate film.
[9] The isocyanate compound (A) is m-xylylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 2,5-bis (isocyanatomethyl). ) -Bicyclo [2.2.1] heptane, 2,6-bis (isocyanatomethyl) -bicyclo [2.2.1] heptane, bis (4-isocyanatocyclohexyl) methane, 1,3-bis (Isocyanatomethyl) cyclohexane, 1,4-bis (isocyanatomethyl) cyclohexane, one or more diisocyanate compounds selected from the group consisting of hexamethylene diisocyanate,
The active hydrogen compound (B) is pentaerythritol tetrakis (3-mercaptopropionate), 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-di. Mercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4-mercaptomethyl-1, 8-dimercapto-3,6-dithiaoctane, 2,5-dimercaptomethyl-1,4-dithiane, 1,1,3,3-tetrakis (mercaptomethylthio) propane, 4,6-bis (mercaptomethylthio) -1 , 3-dithiane, 2- (2,2-bis (mercaptomethylthio) ethyl) -1,3-dithietane Plastic polarized lens according to any one of the species or more polythiol compound [6] to [8].
[10] The plastic polarizing lens according to any one of [1] to [9], wherein the thiourethane resin has an e-line refractive index in the range of 1.50 to 1.70.
[11] An aromatic polyester polyol composed of a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid on at least one surface of a polarizing film composed of a thermoplastic polyester, and urethane-modified isocyanurate Applying and drying a composition comprising a coating layer to form a coating layer;
Fixing the polarizing film with a coat layer in a lens casting mold in a state of being separated from the mold;
Injecting a monomer mixture into a gap between at least the coat layer of the polarizing film with the coat layer and the mold;
Polymerizing and curing the monomer mixture, and laminating a base material layer made of a thiourethane resin on at least the coating layer of the polarizing film with a coating layer;
Of manufacturing a plastic polarizing lens comprising:
[12] The method for producing a plastic polarizing lens according to [11], wherein in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid. .
[13] The method for producing a plastic polarizing lens according to [11] or [12], wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.
[14] The method for producing a plastic polarizing lens according to any one of [11] to [13], wherein the composition further contains a curing catalyst.
[15] The step of forming the coat layer includes:
The method for producing a plastic polarizing lens according to any one of [11] to [14], including a step of forming the coat layer on both surfaces of the polarizing film.
[16] Before the step of forming the coat layer,
The plastic polarized light according to any one of [11] to [15], comprising a step of forming the polarizing film under a temperature condition of a glass transition temperature of the thermoplastic polyester + 5 ° C. or higher and a melting point of the thermoplastic polyester or lower. Lens manufacturing method.
[17] After the step of forming the coat layer,
The plastic polarized light according to any one of [11] to [15], comprising a step of forming the polarizing film under a temperature condition of a glass transition temperature of the thermoplastic polyester + 5 ° C. or higher and a melting point of the thermoplastic polyester or lower. Lens manufacturing method.
[18] The method for producing a plastic polarizing lens according to any one of [11] to [17], wherein in the step of injecting the monomer mixture, the viscosity of the monomer mixture at 20 ° C. is 200 mPa · s or less.
[19] A polarizing film made of thermoplastic polyester;
A coating comprising an aromatic polyester polyol composed of a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid and urethane-modified isocyanurate formed on at least one surface of the polarizing film. A polarizing film with a coating layer, comprising a layer.
[20] The polarizing film with a coating layer according to [19], wherein in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid.
[21] The plastic polarizing film according to [19] or [20], wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.
[22] The polarizing film with a coating layer according to any one of [19] to [21], wherein the coating layer further contains a curing catalyst.
[23] An aromatic polyester polyol composed of a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid, and urethane-modified isocyanurate on at least one surface of a polarizing film composed of a thermoplastic polyester. The manufacturing method of a polarizing film with a coating layer including the process of apply | coating and drying the composition containing it and forming a coating layer.
[24] The polarizing film with a coat layer according to [23], wherein in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid. Production method.
[25] The method for producing a polarizing film with a coating layer according to [23] or [24], wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.
[26] The method for producing a polarizing film with a coat layer according to any one of [23] to [25], wherein the composition further contains a curing catalyst.

  The plastic polarizing lens of the present invention is excellent in processing characteristics and the like, and is excellent in adhesion between the polarizing film and the plastic lens. Therefore, the plastic polarizing lens of the present invention is excellent in productivity and suitable for mass production. A plastic polarizing lens having such characteristics is particularly useful as a polarizing lens for glasses.

It is sectional drawing which showed typically the plastic polarizing lens which concerns on embodiment. It is sectional drawing which showed typically the casting_mold | template for lens casting which concerns on embodiment.

The plastic polarizing lens of the present invention is formed on a polarizing film made of thermoplastic polyester, a coating layer formed on at least one surface of the polarizing film, and at least the coating layer of the polarizing film with the coating layer, And a base material layer made of a thiourethane resin.
The coat layer comprises an aromatic polyester polyol composed of a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid, and urethane-modified isocyanurate.
In the plastic polarizing lens of the present invention, the coating layer and the base material layer made of thiourethane resin are laminated in order on at least one surface of the polarizing film made of thermoplastic polyester. Discomfort is suppressed, the thickness can be reduced, and peeling of the polarizing film is suppressed in the outer peripheral polishing step in the subsequent step. That is, the balance of these characteristics is excellent.

  Hereinafter, the plastic polarizing lens of the present invention will be described with reference to the drawings by using embodiments. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

[Plastic Polarized Lens]
As shown in FIG. 1, the plastic polarizing lens 10 of this embodiment includes a polarizing film 12 made of thermoplastic polyester, coat layers 13a and 13b formed on both surfaces of the polarizing film 12, and a polarizing film with a coat layer. The base material layers 14a and 14b made of thiourethane resin formed on both surfaces are laminated and formed.

  The present inventors have found that a coating layer containing an aromatic polyester polyol and a urethane-modified isocyanurate exhibits excellent adhesion to both a base material layer made of a thiourethane-based resin and a polarizing film. A plastic polarizing lens according to the form was completed.

Moreover, as the polarizing film 12, the film which consists of thermoplastic polyester shape | molded on the conditions of the temperature T represented by a following formula can be used.
(Formula) Glass transition temperature of thermoplastic polyester + 5 ° C. ≦ T ≦ Melting point of thermoplastic polyester

  When the polarizing film 12 is shaped (curved) in a desired curvature under this temperature condition, the adhesion with the base material layer is further improved. Therefore, the plastic polarizing lens of this embodiment is further excellent in productivity and suitable for mass production.

[Plastic Polarized Lens Manufacturing Method]
Below, the manufacturing method of the plastic polarizing lens of this embodiment is demonstrated, referring drawings.
The manufacturing method of the plastic polarizing lens of this embodiment includes the following steps.

(A) A composition comprising an aromatic polyester polyol composed of a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid on both surfaces of a polarizing film 12 composed of a thermoplastic polyester, and urethane-modified isocyanurate. (B) A step of fixing the polarizing film 12 with a coat layer in a lens casting mold in a state of being separated from the mold (c) With a coat layer A step of injecting a monomer mixture into the gap between both surfaces of the polarizing film 12 and the mold (d) A substrate comprising a thiourethane resin on both surfaces of the polarizing film 12 with a coating layer by polymerizing and curing the monomer mixture Step of Laminating Layers 14a and 14b Hereinafter, each step will be described in order.

(Process (a))
The polarizing film 12 used in the present embodiment is a thermoplastic polyester film, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-267841. Specifically, a film having a thermoplastic polyester as a matrix, a dichroic dye is blended with the thermoplastic polyester to form a film, and the obtained film is stretched in a uniaxial direction. It can be obtained by heat treatment at a temperature. The thickness is usually in the range of 10 to 500 μm.

  Specifically, polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, or the like can be used as the thermoplastic polyester constituting the polarizing film 12, and polyethylene terephthalate is preferred from the viewpoint of water resistance, heat resistance, and moldability. Those modified by adding a copolymerization component are also included.

  A dichroic dye is preferably used as the dichroic dye used in the present embodiment. A known dye is used as the dichroic dye. For example, it is disclosed in JP-A-61-087757, JP-A-61-285259, JP-A-62-270664, JP-A-62-275163, JP-A-1-103667, and the like. Yes. Specific examples include anthraquinone, quinophthalone, and azo dyes. Those having heat resistance that can withstand the molding of the thermoplastic polyester are preferred.

  In addition, before the step (a) of forming the coat layers 13a and 13b, a step of shaping the polarizing film 12 under a temperature condition of the glass transition temperature of the thermoplastic polyester + 5 ° C. or more and the melting point of the thermoplastic polyester or less. , You may have. Or you may perform the said shaping process after forming a coat layer (after a process (a)).

The shape of the thermoplastic polyester film is preferably a glass transition temperature of the thermoplastic polyester + 5 ° C. or higher, a glass transition temperature of the thermoplastic polyester + 100 ° C. or lower, more preferably a glass transition temperature of the thermoplastic polyester + 5 ° C. As described above, the glass transition temperature of the thermoplastic polyester + 80 ° C. or lower, particularly preferably the glass transition temperature of the thermoplastic polyester + 5 ° C. or higher, and the glass transition temperature of the thermoplastic polyester + 70 ° C. or lower. . As a method for shaping the thermoplastic polyester film, a usual method can be used as long as the film can be shaped into a desired curvature while heating the film to the above temperature.
If it is said shaping temperature, the adhesiveness of the polarizing film 12 which consists of thermoplastic polyester, and the base material layers 14a and 14b which consist of thiourethane-type resin further improves.

When the thermoplastic polyester is, for example, polyethylene terephthalate, the glass transition temperature is 74 ° C and the melting point is 259 ° C. More preferably, it can be carried out under a temperature condition of 79 ° C. or higher and 154 ° C. or lower, particularly preferably 79 ° C. or higher and 144 ° C. or lower.
The glass transition temperature of the thermoplastic polyester can be generally measured using a DSC (differential scanning calorimeter) or the like.

  Examples of the forming method include vacuum forming, pressure forming, vacuum / pressure forming, press forming and the like. In these molding methods, by adjusting the temperature of the thermoplastic polyester film so as to be within the above temperature range and by forming the thermoplastic polyester film into a shape with a desired curvature, adhesion between the polarizing film made of the thermoplastic polyester film and the plastic lens is achieved. Can be improved.

In the method for molding a thermoplastic polyester film, conditions such as molding pressure and molding time are appropriately adjusted according to the molding method, the temperature at the time of molding, the manufacturing equipment, and the like. The thermoplastic polyester film may be heated so as to be in the temperature range before being molded with a mold or the like.
In the step (a), the surface of the polarizing film 12 is subjected to a coating treatment to form a coat layer.

  In the coating treatment, a composition containing an aromatic polyester polyol composed of a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid, and urethane-modified isocyanurate can be used.

  Examples of the compound having a hydroxyl group in the aromatic polyester polyol include ethylene glycol, propylene glycol, butylene glycol, and the like, and one or a combination of two or more can be used. In the present embodiment, ethylene glycol can be preferably used as the compound having a hydroxyl group.

Examples of the aromatic dicarboxylic acid include terephthalic acid and isophthalic acid, which can be used alone or in combination of two or more. In the present embodiment, the aromatic dicarboxylic acid is preferably a combination of terephthalic acid and isophthalic acid. The weight ratio of terephthalic acid to isophthalic acid is not particularly limited, but is preferably 7: 3.
As aromatic polyester polyol, what is marketed can be used, For example, Arakawa Chemical Co., Ltd. AP series etc. are mentioned.

  Urethane-modified isocyanurate is a compound in which isocyanurate is urethane-modified, and is obtained by the urethane reaction between the isocyanate group of isocyanurate and the hydroxyl group of a compound having a hydroxyl group. The compound having a hydroxyl group in the urethane-modified isocyanurate is usually ethylene glycol, propylene glycol, butylene glycol or the like, and can be used alone or in combination of two or more.

The weight ratio of the aromatic polyester polyol to the urethane-modified isocyanurate is usually 20: 1 to 5: 1, preferably 15: 1 to 10: 1, and more preferably 13: 1. By using the coating layer containing the composition obtained as described above, the adhesion between the polarizing film and the plastic lens substrate can be further improved.
In this embodiment, the composition used for the coating process can further contain a curing catalyst. Examples of the curing catalyst include organotin compounds such as dibutyltin dilaurate, dibutyltin dichloride, and dimethyltin dichloride.

  In the present embodiment, when the coating treatment is performed on the polarizing film 12, the coating agent (the composition) may be applied as it is without a solvent, but usually an appropriate solvent system is selected to dissolve or dissolve the coating agent. It is preferable to apply as a dispersed coating solution. In this embodiment, the coating liquid used for coating includes both a liquid in which the coating agent is not diluted with a solvent and a liquid that is diluted in a solvent.

  Solvents include alcohol compounds such as methanol, ethanol and isopropanol, aromatic compounds such as toluene and xylene, ester compounds such as ethyl acetate, ketone compounds such as acetone, methyl ethyl ketone and methyl isobutyl ketone, and halogens such as dichloromethane. It can select from compounds etc., and can be used individually or in combination of 2 or more types.

In the coating solution obtained by diluting the coating agent with a solvent, the concentration in terms of the coating agent is 0.1 to 50 wt%, preferably 1 to 50 wt%, more preferably 3 to 30 wt%. If it exceeds 50 wt%, the stability of the coating solution will become poor, the coating agent component to be applied will increase, the coating layer will become too thick and the presence of the coating layer will be noticeable, and the adhesion due to peeling within the coating layer will There may be a decrease. Conversely, if it is less than 0.1 wt%, the effect of improving the adhesion between the film and the base urethane resin may not be sufficiently obtained.
The thickness of the coat layer is 0.001 to 30 μm, preferably 0.01 to 10 μm, more preferably 0.05 to 5 μm.

  After applying the coating solution on both surfaces of the polarizing film 12 in the present embodiment, if necessary, the fluid coating solution is removed on the film and dried. The drying temperature is not particularly limited, but is usually 5 to 100 ° C, preferably 20 to 100 ° C, more preferably 20 to 80 ° C, and particularly preferably 20 to 60 ° C. You can also apply heat step by step in combination.

  The drying time is appropriately set according to the environment such as the solvent to be used, the drying temperature or the air blowing state, and is not particularly limited, but is usually 1 minute or longer.

  Although there is no particular limitation on the method of applying the coating liquid on both surfaces of the polarizing film 12 in the present embodiment, a method of bending the polarizing film after processing with the coating liquid, a method of processing the coating liquid after bending, Although both methods can be broadly classified, any method can be adopted, and conventionally known methods such as a roll coating method, a spin coating method, a spray coating method, a bar coating method, and a dipping method are used depending on each situation. It is possible to adopt the method that is used. It is also possible to apply one or more times after drying, and in this case, the type of each coating solution may be the same or different. Usually, the object of the present embodiment can often be achieved by one-time application and drying without repeated application.

  After applying the coating liquid used for the primer coating treatment to the polarizing film, drying and / or heat treatment is performed as necessary. The application temperature at the time of drying and / or heat treatment is not particularly limited as long as the performance of the polarizing film does not substantially deteriorate. You may irradiate an active energy ray after apply | coating this resin to a polarizing film. Examples of the active energy rays include ultraviolet rays and electron beams.

  The coating solution may further contain a silane coupling agent.

  Examples of the silane coupling agent include a silane cup having one or more substituents of any one of an epoxy group, an amino group, a (meth) acryloyl group, a vinyl group, a mercapto group, a halogen group, an imino group, an isocyanate group, and a ureido group. A ring agent is mentioned. Examples of the hydrolyzable group bonded to the silicon atom of the silane coupling agent include an alkoxy group that may have two or more oxygen atoms, an alkyl carboxyl group, and a halogen group. Among these, an alkoxysilane compound having an alkoxy group that may have two or more oxygen atoms is more preferable.

Specific examples include γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldiethoxylane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropylmethyldiethoxy. A silane coupling agent having an epoxy group such as silane;
γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, N-β- (aminoethyl) -γ-aminopropyltrimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, Silane coupling agent having an amino group such as N-phenyl-γ-aminopropyltrimethoxysilane, bis [3- (trimethoxysilyl) propyl] amine, bis [3- (trimethoxysilyl) propyl] ethylenediamine, or hydrochloric acid thereof A silane coupling agent comprising a salt;
γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxypropylmethyldiethoxysilane, γ-methacryloxypropyltris (methoxyethoxy) silane, γ A silane coupling agent having a (meth) acryloxy group such as acryloxypropyltrimethoxysilane;
Silanes having a vinyl group such as vinyltrimethoxysilane, vinyltriethoxysilane, vinyltrichlorosilane, vinyltris (β-methoxyethoxy) silane, styrylethyltrimethoxysilane, allyltriethoxysilane, 3- (trimethoxysilyl) propyl methacrylate Coupling agent;
Silane coupling agents having a mercapto group such as γ-mercaptopropyltrimethoxysilane, γ-mercaptopropylmethyldimethoxysilane, γ-mercaptopropyltriethoxysilane;
Silane coupling agents having halogen such as γ-chloropropyltrimethoxysilane, γ-chloropropyltriethoxysilane;
Silane coupling agents having an isocyanate group such as γ-isocyanatopropyltrimethoxysilane and γ-isocyanatopropyltriethoxysilane;
Examples thereof include silane coupling agents having a ureido group such as γ- (ureidopropyl) trimethoxysilane and γ- (ureidopropyl) triethoxysilane.

Among them, preferable silane coupling agents include γ-glycidoxypropyltrimethoxysilane, γ-aminopropyltrimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, N-phenyl-γ-. Aminopropyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxypropylmethyldiethoxysilane, γ-methacryloxypropyltris ( Methoxyethoxy) silane, γ-acryloxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (β-methoxyethoxy) silane, γ-mercaptopropyltrimethoxysilane , Γ-isocyanatopropyltrimethoxysilane and the like. Among them, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxypropylmethyldiethoxysilane, γ-methacryloxypropyltris (methoxyethoxy) silane (Meth) acryloxyalkylalkoxysilanes such as γ-acryloxypropyltrimethoxysilane and vinyltrichlorosilane are particularly preferred.
These may be used alone or in combination of two or more, and include cases where a chemical reaction is interposed between different silane coupling agents.

  Prior to the coating treatment as described above, the polarizing film 12 is previously subjected to chemical treatment such as gas or chemical treatment, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, electron beam irradiation treatment, roughening treatment, flame treatment. 1 type or 2 types or more of pre-processing chosen from these may be given.

  Specific examples of the chemical treatment include gas treatment using gas such as ozone, halogen gas, chlorine dioxide, or sodium hypochlorite, alkali metal hydroxide, alkaline earth metal hydroxide, metal sodium, sulfuric acid. And chemical treatment using an oxidizing agent or reducing agent such as nitric acid, or an acid / base. In chemical treatment, an oxidizing agent, a reducing agent, an acid / base, or the like is usually used as a solution in water, alcohol, liquid ammonia or the like.

  When the treatment chemical is an alkali metal hydroxide and / or alkaline earth metal hydroxide, examples of the alkali metal hydroxide include lithium hydroxide, sodium hydroxide, potassium hydroxide, and the like. Examples of the hydroxide include magnesium hydroxide, calcium hydroxide, barium hydroxide, and the like, and one or more can be selected and used. Of these, sodium hydroxide and potassium hydroxide are preferable, and sodium hydroxide is particularly preferable.

The alkali metal hydroxide and / or alkaline earth metal hydroxide is preferably used as a solution thereof. Examples of the solvent of the solution include water and / or an organic solvent. Examples of the organic solvent include methanol, ethanol, and isopropanol. Etc. can be illustrated.
The concentration of the solution is 5 to 55% by weight, preferably 10 to 45% by weight, and the temperature of the solution is 0 to 95 ° C, preferably 20 to 90 ° C, more preferably 30 to 80 ° C. A range is preferred.

  In the pretreatment with the alkali metal hydroxide and / or alkaline earth metal hydroxide solution in this embodiment, the solution in the solution concentration and the solution temperature range is in contact with one side or both sides of the polarizing film for a predetermined time. Can be done. Although there is no restriction | limiting in particular as this contact method, For example, methods, such as immersion to the polarizing film in a solution, or contact with this polarizing film by shower, surface flow, etc., can be illustrated. Among them, a method of immersing the polarizing film in a solution is preferable. At that time, in order to make the concentration and temperature of the solution uniform, a method such as stirring, convection, or jet can be employed. Although there is no restriction | limiting in particular in this contact time, The range of 1 minute-24 hours, Preferably it is 5 minutes-10 hours, Most preferably, it is the range of 5 minutes-5 hours.

  When the alkali metal hydroxide and / or alkaline earth metal hydroxide solution is brought into contact with the polarizing film, physical stimulation such as ultrasonic irradiation or vibration can be used in combination.

  The alkali metal hydroxide and / or alkaline earth metal hydroxide solution may contain an anionic or nonionic surfactant for the purpose of improving the wettability between the solution and the polarizing film. .

  The solution concentration, solution temperature, and contact time at the time of contact between the alkali metal hydroxide and / or alkaline earth metal hydroxide solution and the polarizing film are within a range that does not substantially impair the optical properties of the polarizing film. Can be selected as appropriate.

  After bringing the polarizing film into contact with the alkali metal hydroxide and / or alkaline earth metal hydroxide solution, the polarizing film is pulled out of the solution, and water and / or methanol, ethanol, isopropanol, if necessary, The polarizing film may be washed and dried with an organic solvent such as acetone or methyl ethyl ketone.

The corona discharge treatment is a kind of gas discharge, which utilizes the phenomenon that gas molecules are ionized to show conductivity and the film surface is activated by the ion flow, and is widely used. It is. The gas for performing the discharge treatment includes air, but may be a gas such as nitrogen, carbon dioxide, or ammonia gas. Corona discharge treatment can be achieved, for example, by a method of treating the surface of a polarizing film using a corona that is generated by applying a voltage to an electrode in a known high-frequency generator. Corona discharge treatment strength is preferably from 1~500W · min / ^{m 2,} more preferably 5~400W · min / ^{m 2.}
Examples of the plasma treatment include normal pressure plasma treatment and vacuum plasma treatment (low temperature plasma treatment).
In the atmospheric pressure plasma treatment, discharge treatment is performed in a gas atmosphere in which gases such as air, water vapor, argon, nitrogen, helium, carbon dioxide, and carbon monoxide are used alone or mixed.

The vacuum plasma treatment can be performed under reduced pressure. For example, a polarizing film is placed in an internal electrode type discharge treatment apparatus having a counter electrode composed of a drum electrode and a plurality of rod electrodes, and 0.001 to 50 Torr, preferably In a processing gas atmosphere of 0.01 to 10 Torr, more preferably 0.02 to 1 Torr, a high voltage of direct current or alternating current is applied between the electrodes and discharged to generate plasma of the processing gas. Surface treatment can be performed by exposing the surface of The processing conditions for the vacuum plasma processing depend on the processing apparatus, the type of processing gas, the pressure, the frequency of the power source, etc., but preferable conditions may be selected as appropriate. As said process gas, argon, nitrogen, helium, a carbon dioxide, carbon monoxide, air, water vapor | steam etc. can be used individually or in mixture, for example.
Through the above step (a), a polarizing film with a coating layer can be obtained.

(Process (b))
As shown in FIG. 2, the plastic polarizing lens of this embodiment has a specific isocyanate compound and a lens casting mold 20 on which a polarizing film 12 made of a thermoplastic polyester having coat layers 13a and 13b is fixed. It is obtained by injecting a polymerizable composition with a specific active hydrogen compound and then polymerizing and curing.
The lens casting mold 20 is generally composed of two molds 22a and 22b held by a gasket 22c.

  The material of the gasket 22c is polyvinyl chloride, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-propylene copolymer, ethylene-propylene-diene copolymer, polyurethane elastomer, fluororubber, or soft elasticity obtained by blending polypropylene with them. Resins are used. A material that neither swells nor elutes with respect to the polymerizable composition of the specific isocyanate compound and the specific active hydrogen compound used in the present embodiment is preferable.

  Glass, metal, etc. are mentioned as a material of mold 22a, 22b, Usually glass is used. A mold release agent may be applied to the molds 22a and 22b in advance in order to improve the mold releasability of the obtained lens. In addition, a coating liquid for imparting hard coating performance to the lens material may be applied in advance to the mold.

  In the space of the lens casting mold 20, the polarizing film 12 made of thermoplastic polyester is placed so as to be parallel to the inner surface of the front mold 22 a facing the film surface. Gaps 24a and 24b are formed between the polarizing film 12 and the molds 22a and 22b, respectively. The separation distance a having the narrowest gap between the gaps 24a and 24b is about 0.2 to 2.0 mm.

(Process (c))
Next, in the space of the lens casting mold 20, a monomer mixture (polymerizable composition) is injected into the two gaps 24 a and 24 b between the molds 22 a and 22 b and the polarizing film 12 by a predetermined injection means. . In the present embodiment, a polymerizable composition of (A) an isocyanate compound and (B) an active hydrogen compound having a thiol group can be used. For this reason, the viscosity at the time of injection is low, and even a gap with a gap as described above can be easily injected.

  The isocyanate compound (A) used in the present embodiment includes a compound having an isothiocyanate group, and specifically, selected from a polyisocyanate compound, an isocyanate compound having an isothiocyanate group, and a polyisothiocyanate compound. One or more compounds.

As a polyisocyanate compound, for example,
Hexamethylene diisocyanate, 2,2,4-trimethylhexane diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, lysine diisocyanatomethyl ester, lysine triisocyanate, m-xylylene diisocyanate, α, α, α ', α '-Tetramethylxylylene diisocyanate, bis (isocyanatomethyl) naphthalene, mesitylylene triisocyanate, bis (isocyanatomethyl) sulfide, bis (isocyanatoethyl) sulfide, bis (isocyanatomethyl) disulfide, bis (isocyanato) Ethyl) disulfide, bis (isocyanatomethylthio) methane, bis (isocyanatoethylthio) methane, bis (isocyanatoethylthio) ethane, bis (isocyanatomethylthio) ethane, etc. Aliphatic polyisocyanate compound;
Isophorone diisocyanate, bis (isocyanatomethyl) cyclohexane, dicyclohexylmethane diisocyanate, cyclohexane diisocyanate, methylcyclohexane diisocyanate, dicyclohexyldimethylmethane isocyanate, 2,5-bis (isocyanatomethyl) -bicyclo [2.2.1] heptane, 2, 6-bis (isocyanatomethyl) -bicyclo [2.2.1] heptane, 3,8-bis (isocyanatomethyl) tricyclodecane, 3,9-bis (isocyanatomethyl) tricyclodecane, 4,8 -Bis (isocyanatomethyl) tricyclodecane, 4,9-bis (isocyanatomethyl) tricyclodecane, bis (4-isocyanatocyclohexyl) methane, 1,3-bis (isocyanatomethyl) cyclohexane, , 4 -Alicyclic polyisocyanate compounds such as bis (isocyanatomethyl) cyclohexane;
Aromatic polyisocyanate compounds such as 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, diphenyl sulfide-4,4-diisocyanate;
2,5-diisocyanatothiophene, 2,5-bis (isocyanatomethyl) thiophene, 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, Examples thereof include heterocyclic polyisocyanate compounds such as 5-bis (isocyanatomethyl) -1,3-dithiolane, but are not limited to these exemplified compounds.

  Examples of the isocyanate compound having an isothiocyanate group include, but are not limited to, those obtained by changing a part of the isocyanate group of the polyisocyanate compound exemplified above to an isothiocyanate group. .

Examples of the polyisothiocyanate compound include:
Hexamethylene diisothiocyanate, lysine diisothiocyanatomethyl ester, lysine triisothiocyanate, m-xylylene diisothiocyanate, bis (isothiocyanatomethyl) sulfide, bis (isothiocyanatoethyl) sulfide, bis (isothiocyanatoethyl) ) Aliphatic polyisothiocyanate compounds such as disulfides;
Isophorone diisothiocyanate, bis (isothiocyanatomethyl) cyclohexane, dicyclohexylmethane diisothiocyanate, cyclohexane diisothiocyanate, methylcyclohexane diisothiocyanate, 2,5-bis (isothiocyanatomethyl) bicyclo- [2.2.1 ] -Heptane, 2,6-bis (isothiocyanatomethyl) bicyclo- [2.2.1] -heptane, 3,8-bis (isothiocyanatomethyl) tricyclodecane, 3,9-bis (isothiocyana) Alicyclic polyisothiocyanate compounds such as tomethyl) tricyclodecane, 4,8-bis (isothiocyanatomethyl) tricyclodecane, 4,9-bis (isothiocyanatomethyl) tricyclodecane;
Aromatic polyisothiocyanate compounds such as diphenyl disulfide-4,4-diisothiocyanate;
2,5-diisothiocyanatothiophene, 2,5-bis (isothiocyanatomethyl) thiophene, 2,5-diisothiocyanatotetrahydrothiophene, 2,5-bis (isothiocyanatomethyl) tetrahydrothiophene, 3, 4-bis (isothiocyanatomethyl) tetrahydrothiophene, 2,5-diisothiocyanato-1,4-dithiane, 2,5-bis (isothiocyanatomethyl) -1,4-dithiane, 4,5-dithiane Examples thereof include sulfur-containing heterocyclic polyisothiocyanate compounds such as isothiocyanato-1,3-dithiolane and 4,5-bis (isothiocyanatomethyl) -1,3-dithiolane. It is not limited.

  Further, halogen-substituted products such as chlorine-substituted products and bromine-substituted products of these isocyanate compounds, alkyl-substituted products, alkoxy-substituted products, nitro-substituted products, prepolymer-modified products with polyhydric alcohols, carbodiimide-modified products, and urea-modified products. Biuret modified products, dimerization or trimerization reaction products, and the like can also be used. These isocyanate compounds can be used alone or in combination of two or more.

  As the isocyanate compound (A), a diisocyanate compound is preferably used in view of availability, price, performance of the obtained resin, and the like. For example, m-xylylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 2,5-bis (isocyanatomethyl) -bicyclo [2.2.1 ] Heptane, 2,6-bis (isocyanatomethyl) -bicyclo [2.2.1] heptane, bis (4-isocyanatocyclohexyl) methane, 1,3-bis (isocyanatomethyl) cyclohexane, 1, 4-bis (isocyanatomethyl) cyclohexane and hexamethylene diisocyanate are preferably used, and 2,5-bis (isocyanatomethyl) bicyclo- [2.2.1] -heptane, 2,6-bis (isocyanatomethyl) Bicyclo- [2.2.1] -heptane and m-xylylene diisocyanate are particularly preferably used It is. These can be used alone or in combination of two or more.

  The active hydrogen compound (B) used in the present embodiment is one or more active hydrogen compounds selected from a thiol compound having a hydroxyl group and a polythiol compound.

As a thiol compound having a hydroxyl group, for example,
2-mercaptoethanol, 3-mercapto-1,2-propanediol, glycerol bis (mercaptoacetate), 4-mercaptophenol, 2,3-dimercapto-1-propanol, pentaerythritol tris (3-mercaptopropionate), penta Although erythritol tris (thioglycolate) etc. can be mentioned, it is not limited only to these exemplary compounds.

As a polythiol compound, for example,
Methanedithiol, 1,2-ethanedithiol, 1,2,3-propanetrithiol, 1,2-cyclohexanedithiol, bis (2-mercaptoethyl) ether, tetrakis (mercaptomethyl) methane, diethylene glycol bis (2-mercaptoacetate) ), Diethylene glycol bis (3-mercaptopropionate), ethylene glycol bis (2-mercaptoacetate), ethylene glycol bis (3-mercaptopropionate), trimethylolpropane tris (2-mercaptoacetate), trimethylolpropane tris (3-mercaptopropionate), trimethylol ethane tris (2-mercaptoacetate), trimethylol ethane tris (3-mercaptopropionate), pentaerythritol tetrakis (2-mer Captoacetate), pentaerythritol tetrakis (3-mercaptopropionate), 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-mercaptopropylthio) ethane, 1,2,3-tris (mercaptomethylthio) propane, 1,2,3-tris (2-mercaptoethylthio) propane, 1,2, 3-tris (3-mercaptopropylthio ) Propane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercapto Methyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, tetrakis (mercaptomethylthiomethyl) methane, Tetrakis (2-mercaptoethylthiomethyl) methane, tetrakis (3-mercaptopropylthiomethyl) methane, bis (2,3-dimercaptopropyl) sulfide, 2,5-dimercaptomethyl-1,4-dithiane, 2, 5-Dimercapto-1,4-dithiane, 2,5-dimercaptomethyl-2,5-dimethyl-1,4-dithiane, and thioglycosyl thereof 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), hydroxymethyl disulfide bis (2-mercaptoacetate), hydroxymethyl disulfide bis (3-mercaptopropionate), hydroxyethyl disulfide bis (2-mercaptoacetate), hydroxyethyl disulfide bis (3-mercaptopro) Pinate), 2-mercaptoethyl ether bis (2-mercaptoacetate), 2-mercaptoethyl ether bis (3-mercaptopropionate), thiodi Recalled bis (2-mercaptoethyl ester), thiodipropionic acid bis (2-mercaptoethyl ester), dithiodiglycolic acid bis (2-mercaptoethyl ester), dithiodipropionic acid bis (2-mercaptoethyl ester), 1,1,3,3-tetrakis (mercaptomethylthio) propane, 1,1,2,2-tetrakis (mercaptomethylthio) ethane, 4,6-bis (mercaptomethylthio) -1,3-dithiane, tris (mercaptomethylthio) ) Aliphatic polythiol compounds such as methane, tris (mercaptoethylthio) 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, 1,3,5-trimercaptobenzene, 1,3,5-tris (mercaptomethyl) benzene, 1,3,5-tris (mercaptomethyleneoxy) benzene, 1,3,5-tris (mercaptoethyleneoxy) benzene, 2,5-toluenedithiol, 3, Aromatic polythiol compounds such as 4-toluenedithiol, 1,5-naphthalenedithiol, 2,6-naphthalenedithiol;
2-methylamino-4,6-dithiol-sym-triazine, 3,4-thiophenedithiol, bismuthiol, 4,6-bis (mercaptomethylthio) -1,3-dithiane, 2- (2,2-bis (mercapto) Examples include heterocyclic polythiol compounds such as methylthio) ethyl) -1,3-dithietane, but are not limited to these exemplified compounds.

  Furthermore, oligomers of these active hydrogen compounds and halogen-substituted products such as chlorine-substituted products and bromine-substituted products may be used. These active hydrogen compounds can be used alone or in combination of two or more.

  Of these active hydrogen compounds, polythiol compounds are preferably used from the standpoint of availability, price, performance of the obtained resin, and the like. For example, pentaerythritol tetrakis (3-mercaptopropionate), 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11- Dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4-mercaptomethyl-1,8-dimercapto-3,6 -Dithiaoctane, 2,5-dimercaptomethyl-1,4-dithiane, 1,1,3,3-tetrakis (mercaptomethylthio) propane, 4,6-bis (mercaptomethylthio) -1,3-dithiane, 2- (2,2-bis (mercaptomethylthio) ethyl) -1,3-dithietane is preferably used and pentaerythritol te Lakis (3-mercaptopropionate), 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane Preferably used. These can be used alone or in combination of two or more.

  In addition, the (A) isocyanate compound used in the present embodiment may be obtained by preliminarily reacting a part of the (B) active hydrogen compound. In addition, the (B) active hydrogen compound used in the present embodiment may be obtained by preliminarily reacting a part of the (A) isocyanate compound.

  Further, in addition to (A) the isocyanate compound and (B) the active hydrogen compound, for the purpose of modifying the resin, a hydroxy compound, an epoxy compound, an episulfide compound, an organic acid and its anhydride, a (meth) acrylate compound, and the like are included. A resin modifier such as an olefin compound may be added. Here, the resin modifier is a compound that adjusts or improves the physical properties such as the refractive index, Abbe number, heat resistance, specific gravity and mechanical strength such as impact resistance of the thiourethane resin.

As a hydroxy compound used as a resin modifier, for example,
Examples include diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, 1,4-butanediol, thiodiethanol, dithiodiethanol, glycerin, trimethylolpropane, pentaerythritol, and oligomers thereof. It is not limited to only.
As an epoxy compound that can be added as a resin modifier, for example,
A phenolic epoxy compound obtained by a condensation reaction of a polyhydric phenol compound such as bisphenol A glycidyl ether and an epihalohydrin compound;
Alcoholic epoxy compounds obtained by condensation of polyhydric alcohol compounds such as hydrogenated bisphenol A glycidyl ether and epihalohydrin compounds;
A glycidyl ester epoxy compound obtained by condensation of a polyvalent organic acid compound such as 3,4-epoxycyclohexylmethyl-3 ′, 4′-epoxycyclohexanecarboxylate and an epihalohydrin compound;
Amine-based epoxy compounds obtained by condensation of primary and secondary diamine compounds with epihalohydrin compounds;
Examples thereof include aliphatic polyvalent epoxy compounds such as vinylcyclohexene diepoxide, but are not limited to these exemplified compounds.

As an episulfide compound that can be added as a resin modifier, for example,
Bis (2,3-epithiopropylthio) sulfide, bis (2,3-epithiopropylthio) disulfide, bis (2,3-epithiopropylthio) methane, 1,2-bis (2,3-epi Chain aliphatic 2,3-epithiopropylthio compounds such as thiopropylthio) ethane and 1,5-bis (2,3-epithiopropylthio) -3-thiapentane;
Cycloaliphatic such as 1,3-bis (2,3-epithiopropylthio) cyclohexane, 2,5-bis (2,3-epithiopropylthiomethyl) -1,4-dithiane, 2 having a heterocyclic ring , 3-epithiopropylthio compound;
Examples include aromatic 2,3-epithiopropylthio compounds such as 1,3-bis (2,3-epithiopropylthio) benzene and 1,4-bis (2,3-epithiopropylthio) benzene. However, it is not limited only to these exemplary compounds.

Examples of organic acids that can be added as resin modifiers and their anhydrides include:
Thiodiglycolic acid, thiodipropionic acid, dithiodipropionic acid, phthalic anhydride, hexahydrophthalic anhydride, methylhexahydrophthalic anhydride, methyltetrahydrophthalic anhydride, maleic anhydride, trimellitic anhydride, pyromellitic anhydride However, it is not limited only to these exemplary compounds.

As an olefin compound that can be added as a resin modifier, for example,
Benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, 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, triethylene glycol dimethacrylate, neopentyl glycol diacrylate, neopentyl glycol dimethacrylate, ethylene glycol bisglycidyl acrylate, ethylene glycol Coal bisglycidyl methacrylate, bisphenol A diacrylate, bisphenol A dimethacrylate, bisphenol F diacrylate, bisphenol F dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, glycerol diacrylate, glycerol dimethacrylate, pentaerythritol triacrylate, (Meth) acrylate compounds such as pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, xylylene dithiol diacrylate, xylylene dithiol dimethacrylate, mercaptoethyl sulfide diacrylate, mercaptoethyl sulfide dimethacrylate;
Allyl compounds such as allyl glycidyl ether, diallyl phthalate, diallyl terephthalate, diallyl isophthalate, diethylene glycol bisallyl carbonate;
Examples include vinyl compounds such as styrene, chlorostyrene, methylstyrene, bromostyrene, dibromostyrene, divinylbenzene, and 3,9-divinylspirobi (m-dioxane), but are not limited to these exemplified compounds. .
These resin modifiers can be used alone or in combination of two or more.

  The use ratio of (A) isocyanate compound and (B) active hydrogen compound (including a hydroxy compound as a modifier) used in this embodiment is usually a functional group molar ratio of (NCO + NCS) / (SH + OH). Is usually in the range of 0.8 to 1.5, preferably in the range of 0.9 to 1.2.

The (A) isocyanate compound and (B) active hydrogen compound used in the present embodiment are selected in consideration of availability, price, ease of handling, performance of the resulting resin, and the like.
A particularly important factor for ease of handling is the viscosity at the time of injection of the polymerizable composition. The viscosity at the time of injection includes (A) a combination of an isocyanate compound and (B) an active hydrogen compound (including the type and amount of the resin modifier when using a resin modifier. When using a catalyst, Including the type and amount of the catalyst.) If the viscosity is too high, a narrow gap 24a between the glass molds 22a and 22b and the polarizing film 12 in the space of the lens casting mold 20 is obtained. It becomes difficult to inject into 24b, and it becomes difficult to manufacture a polarizing lens. In general, the viscosity at the time of injection is preferably 200 mPa · s or less as a measured value at 20 ° C. For the production of a lens having a very thin center thickness, a further low viscosity, for example, 100 mPa · s or less is more preferred. . The viscosity of the polymerizable composition is measured using a B-type viscometer at a liquid temperature of 20 ° C.

  As the performance of the resin to be considered, the refractive index is important, and those having a high refractive index can be suitably used. For example, the refractive index measured by e-line is usually 1.50 to 1.70, preferably 1.57 to 1.70, more preferably 1.59 to 1.70, and even more preferably 1. A resin having a refractive index in the range of 65 to 1.68 is obtained. (A) An isocyanate compound and (B) an active hydrogen compound (in the case of using a resin modifier, including the type and amount of the resin modifier) A combination is preferred. If the refractive index is too low, it can be clearly seen that a film is contained in the polarizing lens, and the appearance is poor.

  The polymerizable composition of (A) isocyanate compound and (B) active hydrogen compound used in this embodiment is usually the same on both sides of the polarizing film surface, but different ones may be used. There is no problem.

  When curing the polymerizable composition of (A) an isocyanate compound and (B) an active hydrogen compound, if necessary, a catalyst such as dibutyltin dichloride, a benzotriazole, etc., as in the known molding method UV absorbers, internal mold release agents such as acidic phosphate esters, light stabilizers, antioxidants, reaction initiators such as radical reaction initiators, chain extenders, crosslinking agents, anti-coloring agents, oil-soluble dyes, filling Substances such as agents may be added.

  When preparing an injection liquid by mixing a reaction catalyst, a release agent, and other additives with (A) an isocyanate compound and (B) an active hydrogen compound, the addition of the catalyst, the release agent, and other additives is (A) Depending on the solubility in the isocyanate compound and (B) active hydrogen compound, it can be added and dissolved in (A) the isocyanate compound in advance, or (B) added and dissolved in the active hydrogen compound, or (A) the isocyanate. The compound and (B) the active hydrogen compound may be added and dissolved in the polymerizable composition. Or you may add this, after making it dissolve in a part of (A) isocyanate compound and (B) active hydrogen compound to be used, and preparing a master liquid. The order of addition is not limited to these exemplified methods, and is appropriately selected in consideration of operability, safety, convenience and the like.

  Mixing is usually performed at a temperature of 30 ° C. or lower. From the viewpoint of the pot life of the polymerizable composition, it may be preferable that the temperature is further lowered. In addition, when the additive such as a catalyst or a release agent does not show good solubility in (A) an isocyanate compound or (B) an active hydrogen compound, it is heated in advance, and (A) an isocyanate compound, (B) It may be dissolved in an active hydrogen compound or a mixture thereof.

  Furthermore, depending on the physical properties required for the obtained plastic lens, it is often preferable to perform a defoaming treatment under reduced pressure, a filtration treatment under pressure, reduced pressure, or the like, if necessary.

(Process (d))
Next, a lens casting mold on which a polarizing film into which a polymerizable composition of (A) an isocyanate compound and (B) an active hydrogen compound is injected is fixed at a predetermined temperature in an oven or in a heatable apparatus such as water. It is heated and cured for several hours to several tens of hours using a program.

  The polymerization curing temperature is not limited because the conditions vary depending on the composition of the polymerizable composition, the type of catalyst, the shape of the mold, and the like, but it is performed at a temperature of about −50 to 200 ° C. for 1 to 100 hours.

  In general, it is common to start at a temperature in the range of 5 ° C. to 40 ° C., then gradually raise the temperature to the range of 80 ° C. to 130 ° C. and heat at that temperature for 1 to 4 hours.

  The plastic polarizing lens 10 of this embodiment as shown in FIG. 1 can be obtained by taking out from the lens casting mold after completion of the curing molding. In such a plastic polarizing lens 10, the coating layer 13 a and the base material layer 14 a are sequentially laminated on one surface of the polarizing film 12, and the coating layer 13 b and the base material layer 14 b are sequentially laminated on the other surface. With such a configuration, it is possible to prevent the polarizing film 12 from being peeled off from the lens material during the peripheral polishing, and it is possible to manufacture a large amount of polarizing lenses industrially.

  The plastic polarizing lens 10 of the present embodiment is preferably subjected to annealing treatment by heating the released lens for the purpose of alleviating distortion due to polymerization. The annealing temperature is usually in the range of 80 to 150 ° C, preferably in the range of 100 to 130 ° C, more preferably in the range of 110 to 130 ° C. The annealing time is usually in the range of 0.5 to 5 hours, preferably in the range of 1 to 4 hours.

  The plastic polarizing lens 10 of the present embodiment is used with a coating layer on one side or both sides as necessary. Examples of the coating layer include a primer layer, a hard coat layer, an antireflection film layer, an antifogging coat layer, a stainproof layer, and a water repellent layer. These coating layers may be used singly or in a multilayered form. When a coating layer is applied to both sides, a similar coating layer or a different coating layer may be applied to each surface.

  Each of these coating layers contains an ultraviolet absorber for the purpose of protecting the lens and eyes from ultraviolet rays, an infrared absorber for the purpose of protecting the eyes from infrared rays, a light stabilizer and an antioxidant for the purpose of improving the weather resistance of the lens, Dyes and pigments for the purpose of enhancing the fashionability of the lens, photochromic dyes and photochromic pigments, antistatic agents, and other known additives may be used in combination for the purpose of enhancing the performance of the lens. Various leveling agents may be used for the purpose of improving coatability.

  The primer layer is generally formed between a polarizing lens substrate (thiourethane resin) and a hard coat layer for the purpose of improving the adhesion of the hard coat layer and the impact resistance of the polarizing lens. The film thickness is usually about 0.1 to 10 μm.

  The primer layer is formed by, for example, a coating method or a dry method. In the application method, a primer layer is formed by applying the primer composition by a known application method such as spin coating or dip coating, followed by solidification. In the dry method, it is formed by a known dry method such as a CVD method or a vacuum deposition method. When forming the primer layer, the surface of the lens may be subjected to pretreatment such as alkali treatment, plasma treatment, or ultraviolet treatment as necessary for the purpose of improving adhesion.

  As the primer composition, a material in which the solidified primer layer has high adhesion to the lens substrate (thiourethane resin) is preferable. Usually, urethane resin, epoxy resin, polyester resin, melanin resin, polyvinyl acetal A primer composition containing as a main component is used. The primer composition can be used in the absence of a solvent, but an appropriate solvent that does not affect the lens may be used for the purpose of adjusting the viscosity of the composition.

  The hard coat layer is a coating layer intended to give the lens surface functions such as scratch resistance, abrasion resistance, moisture resistance, warm water resistance, heat resistance, weather resistance, etc. It is about 0.3 to 30 μm.

  The hard coat layer is usually formed by applying a hard coat composition by a known application method such as spin coating or dip coating, followed by curing. Examples of the curing method include thermal curing, a curing method by irradiation with energy rays such as ultraviolet rays and visible rays, and the like. When forming the hard coat layer, pretreatment such as alkali treatment, plasma treatment, and ultraviolet treatment may be performed on the coated surface (lens substrate or primer layer) as necessary for the purpose of improving adhesion. .

  As a hard coat composition, generally, a curable organosilicon compound and oxide fine particles such as Si, Al, Sn, Sb, Ta, Ce, La, Fe, Zn, W, Zr, In and Ti A mixture of (including complex oxide fine particles) is often used. In addition to these, amines, amino acids, metal acetylacetonate complexes, organic acid metal salts, perchloric acids, perchloric acid salts, acids, metal chlorides and polyfunctional epoxy compounds may also be used. Good. The hard coat composition can be used without a solvent, but an appropriate solvent that does not affect the lens may be used.

The antireflection layer is usually formed on the hard coat layer as necessary. The antireflection layer includes an inorganic type and an organic type. In the case of an inorganic type, generally, an inorganic oxide such as SiO ₂ or TiO ₂ is used for vacuum deposition, sputtering, ion plating, ion It is often formed by a dry method such as a beam assist method or a CVD method. In the case of an organic type, generally, it is often formed by a wet process using a composition containing an organosilicon compound and silica-based fine particles having internal cavities.

The antireflection layer may be a single layer or a multilayer, but when used as a single layer, the refractive index is preferably at least 0.1 lower than the refractive index of the hard coat layer. In order to effectively exhibit the antireflection function, it is preferable to use a multilayer antireflection film. In that case, a low refractive index film and a high refractive index film are usually laminated alternately. Also in this case, the refractive index difference between the low refractive index film and the high refractive index film is preferably 0.1 or more. Examples of the high refractive index film include ZnO, TiO ₂ , CeO ₂ , Sb ₂ O ₅ , SnO ₂ , ZrO ₂ , and Ta ₂ O ₅ , and examples of the low refractive index film include an SiO ₂ film. It is done. The film thickness is usually about 50 to 150 nm.
Furthermore, the plastic polarizing lens of the present embodiment may be subjected to back surface polishing, antistatic treatment, dyeing treatment, light control treatment, and the like as necessary.
Since such a plastic polarizing lens can be reduced in thickness, it is useful as a polarizing lens for eyeglasses, particularly a vision correction lens.

  As mentioned above, although the plastic polarizing lens of this embodiment and its manufacturing method were demonstrated as mentioned above, the following aspects can also be taken.

  The plastic polarizing lens of this embodiment includes a mode in which the coating layer 13a (or 13b) and the base material layer 14a (or 14b) are laminated only on one surface of the polarizing film 12. In this case, a base material layer may be formed on the other surface (no coat layer) of the polarizing film 12.

The manufacturing method of the plastic polarizing lens of this embodiment can also take the aspect which consists of the following processes.
(A) A composition comprising an aromatic polyester polyol comprising a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid on one side of a polarizing film comprising a thermoplastic polyester, and a urethane-modified isocyanurate. (B) The step of fixing the polarizing film with the coating layer in the lens casting mold in a state of being separated from the mold (c) Injecting the monomer mixture into the gap between the coat layer and the mold (d) polymerizing and curing the monomer mixture, and forming a base material layer made of a thiourethane resin on the coat layer of the polarizing film with the coat layer Lamination process

(A) A composition comprising an aromatic polyester polyol comprising a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid on one side of a polarizing film comprising a thermoplastic polyester, and a urethane-modified isocyanurate. (B) The step of fixing the polarizing film with the coating layer in the lens casting mold in a state of being separated from the mold (c) A step of injecting a monomer mixture into the gap between the coat layer and the mold, and further into the gap between the polarizing film and the mold; (d) polymerizing and curing the monomer mixture; Laminating a base material layer made of thiourethane resin

  Moreover, in this embodiment, after forming a polarizing film with a coat layer, a plastic polarizing lens is manufactured by bonding a base film made of a thiourethane resin prepared in advance to the surface of the coat layer. Is also possible.

  EXAMPLES The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[Example 1]
A polarizing film made of polyethylene terephthalate [glass transition temperature 70.7 ° C.] (thickness 140 μm) is pre-heated in an oven at 140 ° C. for 15 minutes, and then heated by a pressing temperature of 160 ° C. and a curve of 6C (curve). Added to the shape. After the polarizing film is cut according to the size of the mold, the front and back surfaces of the polarizing film are irradiated with plasma for 20 seconds each using a plasma irradiation surface modification device (PS-601SW type: manufactured by Wedge Co., Ltd.). After washing, it was air-dried to produce a polarizing film. Further, 91.3 parts by weight of the main agent AP2503D2 of Alacoat (Arakawa Chemical Industries, Ltd.), 7.1 parts by weight of the curing agent CL2503, 1.6 parts by weight of the catalyst RA1000, and 500 parts by weight of MEK (methyl ethyl ketone) were obtained. ) Dilution adjustment with a solvent gave a coating solution. The coating liquid prepared earlier was coated on both surfaces of a polyethylene terephthalate polarizing film and dried at about 50 to 60 ° C. This was sandwiched and installed in a mold for forming a polarizing lens (front 6C / rear 6C glass mold set center thickness 12 mm). Next, a mixture of 44.3 parts by weight of m-xylylene diisocyanate, 1,1,3,3-tetrakis (mercaptomethylthio) propane, and 4,6-bis (mercaptomethylthio) -1,3-dithiacyclohexane 55.7 parts by weight, 0.02 parts by weight of dibutyltin dichloride as a curing accelerator, 0.12 parts by weight of ZelecUN (registered trademark, manufactured by Stepan) as a mold release agent, and Seesorb 709 (manufactured by Sipro Kasei Co., Ltd.) as an ultraviolet absorber. After 0.05 part by weight was dissolved by stirring, it was degassed under reduced pressure and used as a monomer mixture for injection immediately after preparation. This monomer mixture for injection is poured into the previously prepared mold for forming a polarizing lens, heated from 25 ° C. to 100 ° C. in an oven for 16 hours, and then maintained at 100 ° C. for 10 hours. The lens casting mold was taken out of the lens. The lens was released from the lens casting mold and annealed at 115 ° C. for 2 hours to obtain a semifinished polarizing lens. Thereafter, the back surface was cut and polished to obtain a 6C-shaped lens. The obtained 6C-shaped lenses were processed into a 49 mm width and 28 mm height using a TOPCON lens processing machine (ALE-100DX), a polyethylene terephthalate polarizing film and a base thiourethane resin The adhesiveness was evaluated. As a result, good adhesion was confirmed in all five sheets without peeling. In the examples, the case where no peeling was observed in all five sheets was evaluated as ◯, and the case where even one sheet was separated was evaluated as x. The evaluation results are shown in [Table-1].

The composition of Alaquat was analyzed and found to be as follows.
Main agent AP2503D2: Aromatic polyester polyol composed of terephthalic acid, isophthalic acid and ethylene glycol (nonvolatile component: 40%, viscosity (25 ° C.) is 170 mPa · s)
Curing agent CL2503: urethane-modified hexamethylene diisocyanurate (nonvolatile component: 40%, viscosity (25 ° C.) is 4 mPa · s)
Catalyst RA1000: Dibutyltin dilaurate (nonvolatile component: 25%)

[Comparative Example 1]
A 6C-shaped finish lens was obtained in the same manner as in Example 1 except that nothing was coated on both surfaces of the polyethylene terephthalate polarizing film. The obtained lens was processed into an oval shape and evaluated for adhesion between a polyethylene terephthalate polarizing film and the base thiourethane resin. As a result, peeling of the polyethylene terephthalate polarizing film occurred in all five sheets. The evaluation results are shown in [Table-1].

[Comparative Example 2]
A 6C-shaped finish lens was obtained in the same manner as in Example 1 except that Samprene IB-422 (polyester polyurethane coating agent manufactured by Sanyo Chemical Industries, Ltd.) was used on both surfaces of the polyethylene terephthalate polarizing film. The obtained lens was processed into an oval shape and evaluated for adhesion between a polyethylene terephthalate polarizing film and the base thiourethane resin. As a result, peeling of the polyethylene terephthalate polarizing film occurred in 3 out of 5 lenses. The evaluation results are shown in [Table-1].
The composition of Samprene IB-422 was analyzed and found to be as follows.
Isocyanate component: Isophorone diisocyanate polyester component: Polyester polyol composition ratio (molar ratio) containing adipic acid, 1,4-butanediol, 3-methyl-1,5-pentanediol as components: Isophorone diisocyanate // Polyester polyol = 1.0 / / 4.3
Solvent Methyl ethyl ketone (MEK), isopropyl alcohol (IPA), MEK / IPA = 60/40
Solid content 30%

[Comparative Example 3]
A 6C-shaped finish lens was obtained in the same manner as in Example 1 except that SK Dyne 2094 (acrylic coating agent manufactured by Soken Chemical Co., Ltd.) was used on both sides of the polyethylene terephthalate polarizing film. The obtained lens was processed into an oval shape and evaluated for adhesion between a polyethylene terephthalate polarizing film and the base thiourethane resin. As a result, peeling of the polyethylene terephthalate polarizing film occurred in 4 out of 5 lenses. The evaluation results are summarized in [Table-1].

[Comparative Example 4]
A 6C-shaped finish lens was obtained in the same manner as in Example 1 except that SHC900 (silicon coating agent manufactured by Momentive Inc.) was used on both surfaces of the polyethylene terephthalate polarizing film. The obtained lens was processed into an oval shape and evaluated for adhesion between a polyethylene terephthalate polarizing film and the base thiourethane resin. As a result, peeling of the polyethylene terephthalate polarizing film occurred in all five sheets. The evaluation results are summarized in [Table-1].

[Comparative Example 5]
A 6C-shaped finish lens was obtained in the same manner as in Example 1 except that STYCAST1266J (Henkel's epoxy coating agent) was used on both sides of the polyethylene terephthalate polarizing film. The obtained lens was processed into an oval shape and evaluated for adhesion between a polyethylene terephthalate polarizing film and the base thiourethane resin. As a result, peeling of the polyethylene terephthalate polarizing film occurred in all five sheets. The evaluation results are summarized in [Table-1].

DESCRIPTION OF SYMBOLS 10 Plastic polarizing lens 12 Polarizing film 13a, 13b Coat layer 14a, 14b Base material layer 20 Lens casting mold 22a, 22b Mold 22c Gasket 24a, 24b Space | gap part a Separation distance

Claims (26)

A polarizing film made of thermoplastic polyester;
A coat layer formed on at least one surface of the polarizing film;
A substrate layer made of a thiourethane resin, formed on at least the coat layer of the polarizing film with a coat layer, is laminated,
The said coating layer is a plastic polarizing lens which comprises the aromatic polyester polyol which consists of the structural unit derived from the compound which has a hydroxyl group, and the structural unit derived from aromatic dicarboxylic acid, and urethane-modified isocyanurate.   The plastic polarized lens according to claim 1, wherein in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid.   The plastic polarized lens according to claim 1 or 2, wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.   The plastic polarizing lens according to any one of claims 1 to 3, wherein the coating layer further includes a curing catalyst.   The plastic polarizing lens according to any one of claims 1 to 4, wherein the coat layer and the base material layer are sequentially laminated on both surfaces of the polarizing film. The thiourethane resin is
(A) one or more isocyanate compounds selected from the group consisting of a polyisocyanate compound, an isocyanate compound having an isothiocyanate group, and a polyisothiocyanate compound;
(B) The thiol compound which has a hydroxyl group, and 1 type, or 2 or more types of active hydrogen compounds chosen from the group which consists of a polythiol compound, It is obtained by making it react. Plastic polarizing lens. The plastic polarized lens according to any one of claims 1 to 6 polarizing film and wherein the polarizing film der Rukoto which is Fugata.   The plastic polarizing lens according to any one of claims 1 to 7, wherein the polarizing film is a polyethylene terephthalate film. The isocyanate compound (A) is m-xylylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 2,5-bis (isocyanatomethyl) -bicyclo [2.2.1] heptane, 2,6-bis (isocyanatomethyl) -bicyclo [2.2.1] heptane, bis (4-isocyanatocyclohexyl) methane, 1,3-bis (isocyanato Methyl) cyclohexane, 1,4-bis (isocyanatomethyl) cyclohexane, one or more diisocyanate compounds selected from the group consisting of hexamethylene diisocyanate,
The active hydrogen compound (B) is pentaerythritol tetrakis (3-mercaptopropionate), 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-di. Mercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4-mercaptomethyl-1, 8-dimercapto-3,6-dithiaoctane, 2,5-dimercaptomethyl-1,4-dithiane, 1,1,3,3-tetrakis (mercaptomethylthio) propane, 4,6-bis (mercaptomethylthio) -1 , 3-dithiane, 2- (2,2-bis (mercaptomethylthio) ethyl) -1,3-dithietane Plastic polarized lens according to any one of claims 6 to 8 are species or more polythiol compounds.   The plastic polarizing lens according to any one of claims 1 to 9, wherein a refractive index of e-line of the thiourethane resin is in a range of 1.50 to 1.70. A composition comprising an aromatic polyester polyol comprising a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid on at least one surface of a polarizing film comprising a thermoplastic polyester, and urethane-modified isocyanurate Applying and drying to form a coat layer;
Fixing the polarizing film with a coat layer in a lens casting mold in a state of being separated from the mold;
Injecting a monomer mixture into a gap between at least the coat layer of the polarizing film with the coat layer and the mold;
Polymerizing and curing the monomer mixture, and laminating a base material layer made of a thiourethane resin on at least the coating layer of the polarizing film with a coating layer;
Of manufacturing a plastic polarizing lens comprising:   The method for producing a plastic polarizing lens according to claim 11, wherein, in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid.   The method for producing a plastic polarizing lens according to claim 11 or 12, wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.   The method for producing a plastic polarizing lens according to any one of claims 11 to 13, wherein the composition further contains a curing catalyst. The step of forming the coat layer includes:
The manufacturing method of the plastic polarizing lens as described in any one of Claims 11 thru | or 14 including the process of forming the said coating layer on both surfaces of the said polarizing film. Before the step of forming the coat layer,
The plastic polarization according to any one of claims 11 to 15, further comprising a step of forming the polarizing film under a temperature condition of a glass transition temperature of the thermoplastic polyester + 5 ° C or more and a melting point of the thermoplastic polyester or less. Lens manufacturing method. After the step of forming the coat layer,
The plastic polarization according to any one of claims 11 to 15, further comprising a step of forming the polarizing film under a temperature condition of a glass transition temperature of the thermoplastic polyester + 5 ° C or more and a melting point of the thermoplastic polyester or less. Lens manufacturing method.   The method for producing a plastic polarizing lens according to any one of claims 11 to 17, wherein in the step of injecting the monomer mixture, the viscosity of the monomer mixture at 20 ° C is 200 mPa · s or less. A polarizing film made of thermoplastic polyester;
A coating comprising an aromatic polyester polyol composed of a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid and urethane-modified isocyanurate formed on at least one surface of the polarizing film. A polarizing film with a coating layer, comprising a layer.   The polarizing film with a coating layer according to claim 19, wherein in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid.   The polarizing film with a coating layer according to claim 19 or 20, wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.   The polarizing film with a coating layer according to any one of claims 19 to 21, wherein the coating layer further comprises a curing catalyst.   A composition comprising an aromatic polyester polyol comprising a structural unit derived from a compound having a hydroxyl group and a structural unit derived from an aromatic dicarboxylic acid on at least one surface of a polarizing film comprising a thermoplastic polyester, and urethane-modified isocyanurate The manufacturing method of the polarizing film with a coating layer including the process of apply | coating and drying and forming a coating layer.   The method for producing a polarizing film with a coat layer according to claim 23, wherein, in the aromatic polyester polyol, the compound having a hydroxyl group contains ethylene glycol, and the aromatic dicarboxylic acid contains terephthalic acid and / or isophthalic acid.   The method for producing a polarizing film with a coating layer according to claim 23 or 24, wherein the urethane-modified isocyanurate is urethane-modified hexamethylene diisocyanurate.   The method for producing a polarizing film with a coat layer according to any one of claims 23 to 25, wherein the composition further comprises a curing catalyst.

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