JP2807531B2 - Photochromic molding - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a photochromic molded article having excellent photochromic action durability.

(Prior art) Photochromism is a phenomenon that has been attracting attention for the past several years. When a compound is irradiated with light containing ultraviolet light such as sunlight or light from a mercury lamp, the color changes rapidly, and the light irradiation is stopped. It is a reversible action that returns to the original color when stopped and put in a dark place. A compound having this property is called a photochromic compound, and compounds having various structures have been conventionally synthesized and proposed, but no special common skeleton is recognized in the structure.

The present inventors have continued research on a series of photochromic compounds, and succeeded in synthesizing a novel chromene derivative having a chromene skeleton, and found that the chromene derivative has an excellent photochromic action, and have already proposed. (Japanese Patent Application Nos. 63-220387, 1-141206 and 1-143011).

(Problems to be Solved by the Invention) Further, the present inventors continued research on producing a photochromic molded product represented by a photochromic lens by dispersing the above-mentioned chromene derivative in a resin. As a result, it has been found that the durability of the photochromic action of the chromene derivative is improved depending on how the chromene derivative is present in the resin.

Therefore, an object of the present invention is to obtain a photochromic molded article having excellent durability.

(Means for Solving the Problems) The present invention provides the following formula [A] However, R ¹ and R ² are the same or different alkyl groups, respectively, and they may be substituted together with a norbornylidene group or a substituted bicyclo [3.
3.1] may form a 9-nonylidene group, and R ³ and R
⁴ is a hydrogen atom of the same or different, an alkyl group, an aryl group, an aralkyl group or a substituted amino group, Is an optionally substituted aromatic hydrocarbon group or an optionally substituted unsaturated heterocyclic group, and when R ¹ and R ² are alkyl groups, Is an alkyl group having 6 to 20 carbon atoms, an alkoxy group having 6 to 20 carbon atoms, -R ⁵ -SR ⁶ and Wherein R ⁵ is an alkylene group or OR ⁸ _n (where R ⁸ is an alkylene group and n is a positive integer);
R ⁶ and R ⁷ are the same or different alkyl groups,
Is -N <, -P <, It is. A) a bicyclic aromatic hydrocarbon group or a bicyclic unsaturated heterocyclic group having at least one substituent selected from the group consisting of:

A thermochromic resin layer is formed by laminating a thermosetting resin layer on both surfaces of a resin layer containing a photochromic compound represented by the following formula.

The photochromic compound in the present invention is a chromene derivative represented by the general formula [A].

In the general formula [A], R ¹ and R ² are the same or different alkyl groups. Although the number of carbon atoms of the alkyl group is not particularly limited, the number of carbon atoms is preferably 1 to 3, and particularly preferably 1 from the viewpoint of the photochromic property of the compound represented by the general formula [A]. preferable. Specific examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, and an i-propyl group.

R ¹ and R ² in the general formula [A] together form a ring, and may optionally have a substituted norbornylidene group or an optionally substituted bixyllo [3.3.1] 9
—It may constitute a nonylidene group.

The norbornylidene group is represented by the following formula And a bicyclo [3.3.1] 9-nonylidene group is represented by the following formula: Is represented by In these norbornylidene groups or bicyclo [3.3.1] 9-nonylidene groups, the hydrogen atom of the above formula may be substituted by a substituent. Number of substituents is 1
Or more, preferably 1 to 3. When it has a substituent, its type, number and position may be selected depending on the purpose and application. When the compound has a plurality of substituents, the substituents may be the same or different.

The above norbornylidene group or bicyclo [3.3.1]
Examples of the substituent of the 9-nonylidene group include fluorine,
Halogen atoms such as chlorine and oxine; hydroxyl groups; cyano groups; nitro groups; carboxyl groups; alkyl groups having 1 to 4 carbon atoms such as methyl, ethyl, propyl, and butyl; methoxy, ethoxy, and propoxy An alkoxy group having 1 to 4 carbon atoms such as a group or butoxy group; a halogenoalkyl group having 1 to 4 carbon atoms such as a trifluoromethyl group; an aryl group having 6 to 10 carbon atoms such as a phenyl group, a tolyl group, and a naphthyl group; An aryloxy group having 6 to 10 carbon atoms such as a phenyloxy group, a tolyloxy group, and a naphthyloxy group; a carbon atom having 7 to 7 carbon atoms such as a benzyl group, a phenethyl group, and a phenylpropyl group.
Aralkyl group having 10 to 10 carbon atoms; aralkyloxy group having 7 to 10 carbon atoms such as benzyloxy group, phenethyloxy group and phenylpropyloxy group; alkylamino group having 1 to 4 carbon atoms such as methylamino group and ethylamino group; dimethylamino group And a dialkylamino group having 2 to 8 carbon atoms such as a diethylamino group; and an alkoxycarbonyl group having 2 to 10 carbon atoms such as a methoxycarbonyl group and an ethoxycarbonyl group.

Preferred examples of these substituents include a halogen atom, a cyano group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogenoalkyl group having 1 to 4 carbon atoms, and an aryl having 6 to 10 carbon atoms. Group, an aralkyl group having 7 to 10 carbon atoms, and a dialkylamino group having 2 to 8 carbon atoms.

R ³ and R ⁴ in the general formula (A) are the same or different, and each represents a hydrogen atom, an alkyl group, an aryl group,
It is an aralkyl group or a substituted amino group.

Here, the substituted amino group is an alkylamino group, a dialkylamino group, or a 4- to 7-membered monocyclic saturated heterocyclic ring containing at least one nitrogen atom or containing a nitrogen atom and an oxygen atom or a sulfur atom. And a monovalent group derived from a ring. The above 4- to 7-membered monocyclic saturated heterocycle is represented by the following formula.

In the above formula, R ⁹ is an alkylene group having 3 to 6 carbon atoms such as a tetramethylene group or a pentamethylene group; _{, -CH 2 OCH 2 CH 2 -} , - CH 2 CH 2 OCH 2 CH 2 --CH 2 O (CH 2)
₃ -, the oxyalkylene group having 3 to 6 carbon atoms such as; -CH _{2
SCH 2 CH 2 -, - CH} 2 S (CH 2) 3 -, - CH 2 CH 2 SCH 2 CH 2 - thioalkylene group having 3 to 6 carbon atoms such as; An azoalkylene group having 3 to 6 carbon atoms, such as, for example, is suitably employed.

Specific examples of each group represented by R ³ and R ⁴ include an alkyl group having 1 to 20 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, an octyl group and a decyl group; Group, tolyl group, naphthyl group, etc.
Aryl groups having 10; aralkyl groups having 7 to 10 carbon atoms, such as benzyl group, phenethyl group, phenylpropyl group and phenylbutyl group. Further, as the substituted amino group,
C1-C4 alkylamino groups such as methylamino group and ethylamino group; C2-C8 dialkylamino groups such as dimethylamino group and diethylamino group; pyrrolidine ring, piperidine ring, piperazine ring, morpholine ring, and thiazolidine 4 to 7 containing at least one nitrogen atom such as a ring or containing a nitrogen atom and an oxygen atom or a sulfur atom
Examples include a monovalent group derived from a membered monocyclic saturated heterocycle.

Among them, R ³ and R ⁴ are a hydrogen atom, a carbon atom 1
An alkyl group having 20 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, a dialkylamino group having 2 to 8 carbon atoms, containing up to two nitrogen atoms, or containing one nitrogen atom and oxygen A monovalent group derived from a 5- or 6-membered monocyclic saturated heterocyclic ring containing any one of an atom and a sulfur atom is preferred. By selecting each group of R ³ or R ⁴ , the fading rate of the compound of the general formula [A] can be changed. For example, if R ³ and R ⁴ are alkyl groups,
It is considered that this is because it is difficult to take the transformer type in the color development state, but a high fading speed can be obtained. In the case where R ³ is a substituted amino group, the trans-form in the color-developing state is stabilized by resonance, and a high color-developing density can be obtained, but the color fading speed is slightly reduced. Further, a compound in which both R ³ and R ⁴ are hydrogen atoms has a feature that the color develops particularly deeply and the fading speed is high.

Next, in the general formula [A] of the present invention, Is a divalent aromatic hydrocarbon group or a divalent unsaturated heterocyclic group which may have a substituent. The aromatic hydrocarbon group has 6 to 18 carbon atoms, preferably 6 carbon atoms.
It has ~ 14. Particularly, a divalent group derived from one benzene ring or two to four condensed rings thereof is preferable. Examples of the ring forming such an aromatic hydrocarbon group include a benzene ring, a naphthalene ring, and a phenanthrene ring.

Examples of the unsaturated heterocyclic group include a 5- or 6-membered monocyclic heterocyclic group containing one or two nitrogen atoms, oxygen atoms and sulfur atoms, or a condensed heterocyclic group in which a benzene ring is condensed. Is shown. Examples of the ring forming such an unsaturated heterocyclic group include a nitrogen-containing heterocyclic ring such as a pyridine ring, a quinoline ring and a pyrrole ring; an oxygen-containing heterocyclic ring such as a furan ring and a benzofuran ring; a thiophene ring and a benzothiophene ring And other sulfur-containing heterocycles.

Above The aromatic hydrocarbon group or unsaturated heterocyclic group represented by may contain at most 5, preferably up to 3, substituents. Examples of such a substituent include a halogen atom such as fluorine, chlorine, and oxaline; a hydroxyl group; a cyano group; a nitro group; an alkyl having 1 to 20 carbon atoms such as a methyl group, an ethyl group, a propyl group, and a butyl group. A C1-C20 alkoxy group such as a methoxy group, an ethoxy group, a propoxy group or a butoxy group; a C6-C10 aryl group such as a phenyl group, a tolyl group or a naphthyl group; a methylamino group or an ethylamino group An alkylamino group having 1 to 4 carbon atoms such as dimethylamino group, diethylamino group and the like;
Dialkylamino group having 1 to 8 carbon atoms; halogenoalkyl group having 1 to 4 carbon atoms such as trifluoromethyl group; containing 1 to 2 sulfur atoms, oxygen atoms and nitrogen atoms such as thienyl group, furyl group, pyrrolyl group and pyridyl group. A 5-membered or 6-membered monocyclic heterocyclic group, furthermore, -R ⁵ -SR ⁶ or And the like.

When the above R ¹ and R ² together form a ring, and constitute an optionally substituted norbornylidene group or an optionally substituted bicyclo [3.3.1] 9-nonylidene group, Is a halogen atom, a hydroxyl group, a cyano group, a nitro group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, and a dialkylamino group having 2 to 8 carbon atoms A divalent aromatic hydrocarbon group or a divalent group which may be substituted in each case by at least one selected from the group consisting of a halogenoalkyl group having 1 to 4 carbon atoms and a monocyclic heterocyclic group Is preferably an unsaturated heterocyclic group.

Also, Is a divalent group derived from a benzene ring which may be substituted in each case by 1 to 3 of the above substituents, or a fused ring of 2 to 4 benzene rings, or
It is preferably a 5- or 6-membered monocyclic heterocyclic ring containing one or two oxygen atoms, sulfur atoms or nitrogen atoms or a divalent group derived from a condensed heterocyclic ring obtained by condensing a benzene ring with these.

Furthermore, Is a benzene ring, a naphthalene ring which may be substituted in each case by 1 to 3 substituents described above,
It is preferably a phenanthrene ring, a pyridine ring, a quinoline ring, a pyrrole ring, a furan ring, a benzofuran ring, a thiophene ring, or a benzothiophene ring.

In the general formula (A), when R ¹ and R ² are an alkyl group, Is an alkyl group having 6 to 20 carbon atoms, an alkoxy group having 6 to 20 carbon atoms, -R ⁵ -SR ⁶ and (However, R ⁵ is an alkylene group or OR ⁸ _n (however, R ⁸
Is an alkylene group, and n is a positive integer. R ⁶ and R ⁷ are the same or different alkyl groups, and X is -N <, -P <, It is. A) a bicyclic aromatic hydrocarbon group or a bicyclic unsaturated heterocyclic group having at least one substituent selected from the group consisting of:

Examples of the alkyl group having 6 to 20 carbon atoms, which is a substituent of a bicyclic aromatic hydrocarbon group or a bicyclic unsaturated heterocyclic group, include a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group and an undecyl group. , Dodecyl, tridecyl, pentadecyl, octadecyl, eicosyl and the like.

Further, as the alkoxy group having 6 to 20 carbon atoms which is a substituent of the bicyclic aromatic hydrocarbon group or the bicyclic unsaturated heterocyclic group, a hexyloxy group, a heptyloxy group, an octyloxy group, a nonyloxy group, Decyloxy, undecyloxy, dodecyloxy, pentadecyloxy, octadecyloxy, eicosyloxy and the like.

Moreover, other substituents bicyclic aromatic hydrocarbon radical or a bicyclic unsaturated heterocyclic group, -R ⁵ -SR ⁶ and Wherein R ⁵ is an alkylene group or OR ⁸ _n (where R ⁸ is an alkylene group and n is a positive integer);
R ⁶ and R ⁷ are the same or different alkyl groups,
Is -N <, -P <, It is. ). The alkylene groups represented by R ⁵ and R ⁸ of these two substituents are not particularly limited by the number of carbon atoms, and are generally selected from the range of 1 to 20, but the durability of the obtained chromene derivative as a photochromic material is Considering that, the number of carbon atoms is preferably in the range of 6-20.
Specific examples of the alkylene group include methylene, ethylene, propylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, and undecamethylene. , Dodecamethylene, tridecamethylene, pentadecamethylene, octadecamethylene, eicosamethylene and the like. Also,
_N of OR ⁸ _{n represented} by R ⁵ may be a positive integer, but generally the chain represented by OR ⁸ _n has 1 to 2 carbon atoms.
It is preferred to choose 0, preferably 6-20, for which n is generally selected from the range 1-20.

Further, the number of carbon atoms of the alkyl group represented by R ⁶ and R ⁷ is not particularly limited, but is preferably in the range of 1 to 4 from the viewpoint of the fading speed of the obtained chromene derivative as a photochromic material.

The above-mentioned various substituents can be substituted with up to 6 bicyclic aromatic hydrocarbon groups or bicyclic unsaturated heterocyclic groups, but usually 1 to 3 for reasons such as ease of production. Is preferably substituted.

The bicyclic aromatic hydrocarbon group or the bicyclic unsaturated heterocyclic group substituted with the above-described various substituents is a 5-membered ring or an aromatic hydrocarbon group or an unsaturated heterocyclic group described above. What fused two 6-membered rings is employ | adopted. Above all, a chromene derivative in which an aromatic ring is condensed at the 7,8 position of chromene as a condensation position is particularly preferably used as a photochromic material because of its high color density.

The substituent of the bicyclic aromatic hydrocarbon group or the bicyclic unsaturated heterocyclic group is an alkyl group having 6 to 20 carbon atoms or 6 to 20 carbon atoms.
When an alkoxy group is contained, the resulting chromene derivative becomes a photochromic material having excellent durability. on the other hand,
The substituent of the bicyclic aromatic hydrocarbon group or the bicyclic unsaturated heterocyclic group is -R ⁵ -SR ⁶ or When the chromene derivative is contained, the obtained chromene derivative becomes a photochromic material having a high fading rate.

The chromene derivative represented by the general formula [A] in the present invention generally develops a color from yellow to red. Therefore, when the photochromic molded article of the present invention is used for applications such as decorative articles, the compound represented by the general formula [A] may be used alone.
When the photochromic molded article of the present invention is used for applications such as sunglasses, the color tone is generally preferred to be brown or gray. Therefore, the color tone is preferably adjusted in combination with another photochromic compound. As other photochromic compounds, those generally referred to as fulgide compounds or fulgimide compounds are preferably used in the present invention because they can be adjusted to a brown or gray color by using the compound of the general formula (A) in combination. Used. The amount of the fulgide compound or the fulgimide compound to be used may be appropriately selected according to the required color tone. In general, in order to obtain a brown or gray color tone, the formula (A)
The compound is selected from the range of 0.01 to 10,000 parts by weight, preferably 0.05 to 200 parts by weight, based on 100 parts by weight of the compound of the formula (1).

The above fulgide compound has the following formula: And a compound having photochromic properties is employed without any limitation. The fulgimide compound is represented by the following formula: And a compound having photochromic properties is employed without any limitation.

In the present invention, as the fulgide compound or fulgimide compound, a compound represented by the following formula is generally used.

In the formula Is a divalent aromatic hydrocarbon group which may each have a substituent or a divalent unsaturated heterocyclic group R ₁ is a monovalent hydrocarbon group which may each have a substituent or Monovalent heterocyclic group Is good norbornylidene group or adamantylidene group X may have a substituent, respectively, an oxygen atom, a group N-R ₂ group _{N-A 1 -B 1 - (} A 2 m (B 2 n R 3 group It represents NA ₃ -A ₄ or the group NA ₃ -R ₄ .

In the general formula (I), Is an aromatic hydrocarbon group or an unsaturated heterocyclic group, and these groups may have at most 5, preferably up to 3 substituents. The aromatic hydrocarbon group has 6 to 20 carbon atoms, preferably 6 to 14 carbon atoms. Examples of the ring forming such an aromatic hydrocarbon ring include a benzene ring, a naphthalene ring and a phenanthrene ring. Rings.

As the unsaturated heterocyclic group, at least one hetero atom such as a nitrogen atom, an oxygen atom and a sulfur atom is used.
And a 5-membered or 6-membered monocyclic heterocyclic group or a condensed heterocyclic group in which a benzene ring or a cyclohexene ring is condensed. Examples of the ring forming such a heterocyclic group include nitrogen-containing heterocycles such as a pyrrole ring, a pyridine ring, a quinoline ring and an isoquinoline ring; oxygen-containing heterocycles such as a furan ring, a benzofuran ring and a pyran ring; a thiophene ring; Sulfur-containing heterocycles such as a benzothiophene ring are exemplified.

As previously mentioned, The aromatic hydrocarbon group or unsaturated heterocyclic group represented by may contain at most 5, preferably up to 3, substituents. Examples of such substituents include halogen atoms such as fluorine, chlorine, bromine and iodine; hydroxyl groups; cyano groups; nitro groups; amino groups; carboxyl groups; methylamino groups;
Alkylamino group of 4 to 4; lower alkyl group having 1 to 4 carbon atoms such as methyl group, ethyl group, propyl group and t-butyl group; 1 to 3 halogen atoms such as trifluoromethyl group and 2-chloroethyl group. A lower alkoxy group having 1 to 4 carbon atoms such as a methoxy group, an ethoxy group or a t-butoxy group; an aryl group having 6 to 10 carbon atoms such as a phenyl group, a naphthyl group and a tolyl group; a phenoxy group Aryloxy groups having 6 to 14 carbon atoms, such as benzyloxy, 1-naphthoxy group; aralkyl groups having 7 to 15 carbon atoms, such as benzyl group, phenylethyl group, phenylpropyl group; and 7 carbon atoms, such as benzyloxy group and phenylpropoxy group. ~ 15
And an alkylthio group having 1 to 4 carbon atoms. These substituents may be the same or different, and the position is not particularly limited.

the above Is an atom or group selected from the group consisting of a halogen atom, a nitro group, a cyano group, an amino group, an alkylthio group having 1 to 4 carbon atoms, an alkyl group having 1 to 4 carbon atoms, and an alkoxy group having 1 to 4 carbon atoms. Is preferably a divalent aromatic hydrocarbon group or a divalent unsaturated heterocyclic group which may be substituted in each case by at least one of the above.

Also, Is an aryl group having 6 to 14 carbon atoms which may be substituted in each case by 1 to 3 of the above-mentioned substituents, or 5 containing one nitrogen atom, oxygen atom and sulfur atom.
More preferably, it is a membered or 6-membered monocyclic heterocyclic group or a condensed heterocyclic group in which a benzene ring or a cyclohexene ring is condensed to the heterocyclic group.

Further above Is preferably a divalent benzene ring, a 5-membered or 6-membered monocyclic heterocyclic ring containing one heteroatom or a condensed heterocyclic ring in which a benzene ring or a cyclohexene ring is condensed to this heterocyclic ring. . The benzene ring, the monocyclic heterocyclic ring or the condensed heterocyclic ring, which contains one or two substituents described above, is also a preferable embodiment.

R ₁ in the general formula [I] is a monovalent hydrocarbon group or a monovalent heterocyclic group which may have a substituent.

Such a hydrocarbon group of R ₁ may be any of an aliphatic, alicyclic or aromatic hydrocarbon, and specific examples thereof include those having 1 carbon atom such as a methyl group, an ethyl group, a propyl group, and a butyl group. -20, preferably 1-6 alkyl groups; C6-C14 aryl groups such as phenyl, tolyl, xylyl, and naphthyl; benzyl, phenylethyl, phenylpropyl, phenylbutyl and the like. An aralkyl group having an alkylene group having 1 to 10, preferably 1 to 4 carbon atoms is suitable.

As the heterocyclic group for R ₁ , at least one kind of hetero atom such as a nitrogen atom, an oxygen atom and a sulfur atom is used for 1 to 3
And preferably a 5- or 6-membered monocyclic heterocyclic group containing one or two or a condensed heterocyclic group obtained by condensing benzene with the monocyclic heterocyclic group. Specific examples of such a heterocyclic group include the aforementioned And saturated heterocyclic groups such as saturated piperidine ring, piperazine ring, morpholine ring, pyrrolidine ring, indoline ring, chroman ring and the like.

Otherwise permissible may have a substituent on the hydrocarbon or heterocyclic group for R ₁ described above. Such a substituent preferably contains at most 5 and preferably up to 3 with respect to the hydrocarbon group or the heterocyclic group. The same substituents as described in can be exemplified.

The above R ₁ is preferably a halogen atom, a carbon atom 1
An alkyl group having 1 to 20 carbon atoms which may be substituted by an alkoxy group having 4 to 4 carbon atoms or an aryl group having 6 to 10 carbon atoms which may be substituted by a halogen atom or an alkoxy group having 1 to 4 carbon atoms; A 5-membered or 6-membered monocyclic heterocyclic group containing 1 to 3 and especially 1 nitrogen atom, carbon atom and sulfur atom, or a condensed heterocyclic group in which a benzene ring is fused to the heterocyclic group And especially a monocyclic heterocyclic group.

Further, particularly preferred as R ₁ is a group having 1 to 6 carbon atoms.
Or an aralkyl group having 7 to 10 carbon atoms or an aryl group having 6 to 10 carbon atoms.

In the general formula (I) of the present invention, Represents a norbornylidene group or an adamantylidene group which may have a substituent. Where the norbornylidene group is The adamantylidene group is represented by the following formula.

The above formula shows a skeleton structure of a norbornylidene group and an adamantylidene group each having no substituent. In these norbornylidene groups or adamantilitene groups, the hydrogen atom of the above formula may be substituted by a substituent, and the number thereof may be one or more. When it has a substituent, its type, number and position are arbitrarily selected depending on the purpose and application. When the compound has a plurality of substituents, the substituents may be the same or different.

Examples of the substituent of the norbornylidene group or the adamantylidene group include a hydroxy group; an alkylamino group having 1 to 4 carbon atoms such as a methylamino group and a diethylamino group; and a carbon atom such as a methoxy group, an ethoxy group and a tert-butoxy group. An alkoxy group having 1 to 4 carbon atoms; an aralkoxy group having 7 to 15 carbon atoms such as benzyloxy group; an aryloxy group having 6 to 14 carbon atoms such as phenoxy group and 1-naphthoxy group; methyl group, ethyl group and t-butyl A lower alkyl group having 1 to 4 carbon atoms, such as a group; a halogen atom such as fluorine, chlorine, and oxa;
A cyano group; a carboxyl group; an alkoxycarbonyl group having 2 to 10 carbon atoms such as ethoxycarbonyl; a halogen-substituted alkyl group having 1 or 2 carbon atoms such as trifluoromethyl group; a nitro group; ~Ten
And an aralkyl group having 7 to 9 carbon atoms such as a phenylethyl group and a phenylpropyl group.

Preferred examples of these substituents include a halogen atom,
Hydroxy group, alkyl group having 1 to 4 carbon atoms, 1 to 1 carbon atom
4 alkoxy groups, alkoxycarbonyl groups having 2 to 10 carbon atoms, aralkyl groups having 7 to 9 carbon atoms or 6 to 10 carbon atoms
Is an aryl group.

In the general formula [I] of the present invention, X represents an oxygen atom (—O—), a group NR ₂ , a group NA ₁ -B _1- (A _{2 m} (B _{2 nR 3} , a group NA ₃ -A ₄ or Shows the group NA ₃ -R ₄ .

In the general formula [I], X represents a group NA ₁ -B _1- (A _{2 m} (B _{2 nR 3} , a group NA ₃ -A ₄ or a group NA ₃ -R ₄ , particularly a group NA ₃ -R ₄ Or the group NA ₁ -B _1- (A _{2 m} (B _{2 n} R ₃ , wherein R ₃ is 1 to 3 atoms selected from the group consisting of halogen, cyano and nitro or substituted Good carbon number 1
10 alkyl groups. ) Is more preferable from the viewpoint of the durability of the photochromic property of the obtained compound.

X in the general formula [I] represents the above-mentioned group NA ₁ -B _1- (A _{2 m} (B _{2 n} R ₃ , wherein R ₃ is a naphthyl group or a naphthylalkyl group;
In the case of NA ₃ -A ₄ , the number of atoms in the main chain between the naphthyl group represented by R ₃ or R ₄ and the imide group (N−) is in the range of 3 to 7 Is preferred because a compound having excellent photochromic action durability can be obtained.

Next, R ₂ , R ₃ , R ₄ , A ₁ , A ₂ , A ₃ , A ₄ , X in the above X
The definitions of B ₁ , B ₂ , m and n will be described in detail.

R ₂ represents a hydrogen atom, an alkyl group or an aryl group, such as a methyl group, an ethyl group, a propyl group, an n-, iso- or tert-butyl group,
Examples thereof include a pentyl group, a hexyl group, an octyl group, and a decyl group. Among them, those having 1 to 20 carbon atoms, and those having 1 to 10 carbon atoms are preferable. Examples of the aryl group include those having 6 to 10 carbon atoms such as a phenyl group, a tolyl group and a naphthyl group.

A ₁ , A ₂ and A ₃ may be the same or different from each other, and may be an alkylene group, an alkylidene group, a cycloalkylene group or an alkylcycloalkane-diyl group. Specific examples thereof include, for example, an alkylene group having 1 to 10 carbon atoms such as a methylene group, an ethylene group, a propylene group, a butylene group, a trimethylene group, a tetramethylene group or a 2,2-dimethyltrimethylene group; an ethylidene group; An alkylidene group having 2 to 10 carbon atoms such as a propylidene group or an isopropylidene group; a cycloalkylene group having 3 to 10 carbon atoms such as a cyclohexylene group;
-Methylcyclohexane-α, 4-methylcyclohexane-α, And an alkylcycloalkane-diyl group having 6 to 10 carbon atoms. As A ₁ and A ₂ , particularly those having 1 to 1 carbon atoms
Preferred are an alkylene group having 6 carbon atoms, an alkylidene group having 2 to 6 carbon atoms, a cycloalkylene group having 3 to 6 carbon atoms, and an alkylcycloalkane-diyl group having 6 to 7 carbon atoms.

B ₁ and B ₂ may be the same as or different from each other, and are selected from the following group of seven bonding groups.

Or m and n each independently represent 0 or 1, and when it represents 0, A _{2 m} or B _{2 n} means a bond. When m is 0, n also represents 0.

R ₃ represents an optionally substituted alkyl group, naphthyl group or naphthylalkyl group. The number of carbon atoms of the above alkyl group is not particularly limited, but is preferably 1 to 10, and the alkyl group of the naphthylalkyl group preferably has 1 to 4 carbon atoms.

The substituent of each group described above is not particularly limited, but the alkyl group may be substituted with 1 to 3 atoms or groups selected from the group consisting of a halogen atom, a cyano group, and a nitro group; The naphthyl group or naphthylalkyl group is selected from the group consisting of a halogen atom, a cyano group, a nitro group, an alkylamino group having 1 to 3 carbon atoms, an alkyl group having 1 to 3 carbon atoms, and an alkoxy group having 1 to 3 carbon atoms. Or 1 to 3 atoms or groups. As the alkyl group represented by R ₃ , the same alkyl groups as those exemplified above for R ₂ can be used. Examples of the naphthylalkyl group include a naphthylmethyl group, a naphthylethyl group, a naphthylpropyl group and a naphthylbutyl group.

A ₄ represents a naphthyl group which may have a substituent.
Although the type of the substituent is not particularly limited, the naphthyl group is a halogen atom, a cyano group, a nitro group, an alkylamino group having 1 to 3 carbon atoms, an alkyl group having 1 to 3 carbon atoms, and an alkoxy group having 1 to 3 carbon atoms. It may be substituted with 1 to 3 atoms or groups selected from the group consisting of: R ₄ represents a halogen atom, a cyano group or a nitro group.

In the definition of R ₃ and A ₄ described above, examples of the halogen atom include fluorine, chlorine and bromine.

The resin of the resin layer containing the photochromic compound dispersed therein, the photochromic compound can be uniformly dispersed,
A resin that does not lubricate or dissolve in the thermosetting resin monomer is preferably used. More specifically exemplified such a resin, polyvinyl alcohol, polyvinyl butyral,
Hydrophilic resins such as polyhydroxyethyl methacrylate, polyacrylonitrile and cellulose; polyolefin resins such as polyethylene and polypropylene; halogen-containing resins such as polytetrafluoroethylene and polyvinyl chloride;
Examples thereof include a thermosetting resin described below.

The mixing ratio of the resin and the photochromic compound is as follows:
It may be determined according to the concentration of the color development of the desired photochromic molded body, generally, the photochromic compound is 0.001 to 60 parts by weight, particularly 0.1 to 100 parts by weight of the resin.
It is preferably in the range of 40 parts by weight.

The thickness of the resin layer containing the photochromic compound is not particularly limited, but in general, from the viewpoint of the coloring density of the photochromic molded article and the durability of the photochromic property, 0.01 to
It is in the range of 2 mm, preferably 0.02 to 1 mm.

The method for producing the resin layer containing the photochromic compound is not limited at all, and examples thereof include the following method.

A method in which a thermoplastic resin and a photochromic compound are melt-kneaded at a temperature equal to or higher than the melting point of the thermoplastic resin and then extruded.

A method in which a thermoplastic resin is dissolved in an appropriate solvent, a photochromic compound is mixed therein, and the solvent is removed by evaporation or the like.

A method in which a raw material monomer of a thermoplastic resin or a thermosetting resin is mixed with a photochromic compound, and the resulting mixture is subjected to emulsion polymerization or suspension polymerization to form an emulsion or suspension on the surface of a thermosetting resin described later.

A method in which a raw material monomer of a thermoplastic resin or a thermosetting resin is mixed with a photochromic compound and cast polymerization is performed.

Next, as the thermosetting resin, ethylene glycol diacrylate, diethylene glycol dimethacrylate,
Ethylene glycol bisglycidyl methacrylate, bisphenol A dimethacrylate, 2,2-bis (4-methacryloyloxyethoxyphenyl) propane, 2,2
-Poly (acrylic acid) and poly (methacrylic acid ester) compounds such as bis (3,5-dibromo-4-methacryloyloxyethoxyphenyl) propane; diallyl phthalate, diallyl terephthalate, diallyl isophthalate, diallyl tartrate, diallyl epoxysuccinate, diallyl Polyvalent allyl compounds such as fumarate, diallyl chlorendate, diallyl hexaphthalate, diallyl carbonate, allyl diglycol carbonate, trimethylolpropane triallyl carbonate; 1,2-bis (methacryloylthio) ethane, bis (2-acryloylthioethyl) ) Polyvalent thioacrylic acid and polyvalent thiomethacrylic acid ester compounds such as ether and 1,4-bis (methacryloylthiomethyl) benzene; polymers of radically polymerizable polyfunctional monomers such as divinylbenzene: Is each of these monomers and unsaturated carboxylic acids such as acrylic acid, methacrylic acid, and maleic anhydride; acrylic acid such as methyl acrylate, methyl methacrylate, benzyl methacrylate, phenyl methacrylate, and 2-hydroxyethyl methacrylate; Methacrylic acid ester compounds; fumaric acid ester compounds such as diethyl fumarate and diphenyl fumarate; thioacrylic acid and thiomethacrylic acid ester compounds such as methylthioacrylate, benzylthioacrylate and benzylthiomethacrylate; styrene, chlorostyrene, methylstyrene, vinyl Copolymers of vinyl compounds such as naphthalene and bromostyrene with radically polymerizable monofunctional monomers: ethanedithiol, propanetriol, hexanedithiol, pentaerythritol tetrakis Ogurikoreto, di (2-mercaptoethyl) addition copolymer of a radical polymerizable polyfunctional monomer wherein the polyhydric thiol compounds such as ethers: diphenylethane diisocyanate,
An addition polymer of a polyvalent isocyanate compound such as xylylene diisocyanate and p-phenylene diisocyanate with a polyhydric alcohol compound such as ethylene glycol, trimethylolpropane, pentaerythritol, and bisphenol A, or the above-mentioned polyvalent thiol compound may be used. These monomers can be used alone or in combination of two or more.

As a method of molding a photochromic molded body, any known method may be used as long as a resin layer containing a photochromic compound dispersed therein is laminated between thermosetting resins. A method of injecting the raw material monomer of the thermosetting resin on both sides of the resin layer containing the compound dispersed therein and then heating and curing the same, and using a suitable adhesive on both sides of the resin layer containing the photochromic compound to form the thermosetting resin. A method of laminating layers, a resin layer containing a photochromic compound dispersed on a thermosetting resin molded body is adhered using an appropriate adhesive, and a raw material monomer of the thermosetting resin is poured thereon and heat-cured. And the like. Further, in order to improve the adhesion between the resin layer containing the photochromic compound dispersed therein and the thermosetting resin, the surface of the resin layer may be coated with an adhesion reinforcing coat.
Examples of the adhesive reinforcing coating agent include an epoxy primer, a polyurethane primer, a silicone primer, and a polyalcohol primer.

The durability of the photochromic property can be further improved by adding an ultraviolet stabilizer to the resin layer containing the photochromic compound dispersed in the photochromic molded article of the present invention. As the ultraviolet stabilizer, a known ultraviolet stabilizer added to various plastics can be used without any limitation.

In the present invention, considering the improvement in durability of the photochromic compound, among various ultraviolet stabilizers, a singlet oxygen quencher, a hindered amine light stabilizer, a hindered phenol antioxidant, and a sulfur-based antioxidant are preferably used. Is done. More specific examples of these ultraviolet stabilizers include Sheasorb UV1084, Sheasorb 3346 (all manufactured by American Cyanamid Co.), UV-Cek AM101, and UV-Cek AM.
105 (all manufactured by Ferro Corporation), Ilgastab 2002, Tinuvin 765, Tinuvin 144, Chimasorb 944, Tinuvin 622, Irganox 1010, Irganox 245 (all manufactured by Ciba Geigy), Reylex NBC (DuPont), Sheasorb 3346 ( American Cyanamid Co., Ltd.), SANOL LS-1114, SANOL LS-744, SANOL LS-26
26 (manufactured by Sankyo Corp.), Sumilizer GA-80, Sumilizer GM, Sumilizer BBM-S, Sumilizer WX-R, Sumilizer S, Sumilizer BHT, Sumilizer TP-D, Sumilizer TPL-R, Sumilizer TPS, Sumilizer MB (Manufactured by Sumitomo Chemical Co., Ltd.), Mark AO-50, Mark AO-20, Mark AO-30, Mark AO-330, Mark AO-23, (above Adeka Argus), Antioxidant HPM-12 (SFOS) Manufactured). Each of the above names is a trade name.

(Effect) In the photochromic molded article of the present invention, the durability of the photochromic compound is improved by allowing the photochromic compound to be present in the resin.

The photochromic molded article of the present invention can be used in a wide range of fields, for example, various recording memory materials, copying materials, printing photoconductors, recording materials for cathode ray tubes, recording materials for lasers, etc. It can be used as a recording material. In addition, the photochromic molded article of the present invention can be used as a material for a photochromic lens material, an optical filter material, a display material, a light meter, a decoration, and the like.

(Examples) Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. “Parts” in the examples is “parts by weight”.

 The symbols in the following examples indicate the following compounds.

・ BMDBP: 2,2-bis (4-methacryloyloxyethoxy-3,5-dibromophenyl) propane ・ Cl-St: chlorostyrene ・ TMP-TAC: trimethylolpropane triallyl carbonate ・ BADBP: 2,2-bis ( 4-allyl carbonate ethoxy-3,5-dibromophenyl) propane ・ ADC: allyl diglycol carbonate ・ DAP: diallyl phthalate ・ St: styrene ・ DCIPF: di (2-chloroisopropyl) fumarate ・ EGDMA: ethylene glycol dimethacrylate ・ PETTP : Pentaerythritol tetrakis (β-thiopropionate) ・ DME: Di (2-mercaptoethyl) ether ・ DVB: Divinylbenzene ・ XIC: Xylylene diisocyanate ・ HPA: 3- (2,4-Dibromophenoxy)- 2-hydroxypropyl acrylate-MMA: methyl methacrylate-DEGDMA: diethylene glycol di MethacrylateTBBM: 3,4,5-tribromobenzyl methacrylateHEMA: 2-hydroxyethyl methacrylateBMA: benzyl methacrylatePVA: polyvinyl alcoholPHEMA: polyhydroxyethyl methacrylatePAN: polyacrylonitrile Production Example 1 1-hydroxy -2-acetonaphthone 10g (0.054mo
l) 6.6 g (0.06 mol) of norcamphor and 8 g of pyrrolidine (0.
113 mol) was dissolved in 300 cc of toluene to prepare a solution. The mixture was boiled for 10 hours and the water was separated. After the completion of the reaction, the toluene was removed under reduced pressure, and the remaining chromanone compound was crystallized with acetone. Next, this chromanone compound was dissolved in 200 cc of methanol, and sodium borohydride was gradually added to obtain a chromanol compound. Heat 7.47 g of this chromanol compound together with 4.5 g of anhydrous copper sulfate in a stream of carbon dioxide at 150 to 160 ° C. for 10 minutes,
By purifying the brown viscous liquid by chromatography on silica gel, a chromene derivative of the following formula is obtained.
6.3 g were obtained.

Elemental analysis of this compound gave C 86.93%, H 6.89%, O
6.18%, which is the calculated value for C ₁₉ H ₁₈ O, C 87.0
Very good agreement was reached with 2%, H 6.87% and O 6.12%. When the proton nuclear magnetic resonance spectrum was measured,
δ 7.2 to 8.3 ppm around 6 based on proton of naphthalene ring
The peak of H, the peak of 2H based on the proton of the alkene near δ5.6 to 6.7 ppm, and the broad peak of 10H based on the proton of the norbornylidene group near δ1.2 to 2.5 ppm were shown. When ¹³ C-nuclear magnetic resonance spectrum was further measured, a peak based on the carbon of the norbornylidene group near δ27 to 52 ppm, a peak based on the carbon of the naphthalene ring near δ110 to 160 ppm, and a peak based on the carbon of the alkene near δ80 to 110 ppm Appears. From the above results, it was confirmed that the isolated product was the compound represented by the above structural formula (1).

Production Example 2 A solution prepared by dissolving 10 g (0.054 mol) of 1-acetyl-2-naphthol, 8.29 g (0.06 mol) of bicyclo [3.3.1] nonan-9-one, and 8.7 g (0.10 mol) of morpholine in 300 cc of toluene was prepared. Prepared. The mixture was boiled for 5 hours and the water was separated. After completion of the reaction, toluene was removed under reduced pressure, and the remaining chromanone compound was recrystallized from acetone. Next, this chromanone compound was dissolved in 200 cc of methanol, and lithium aluminum hydride was added to obtain a chromanol compound. The chroman compound 6.49 g was heated at 170 to 180 ° C. for 10 minutes together with anhydrous copper sulfate in a stream of carbon dioxide, and the brown viscous liquid was purified by chromatography on silica gel to obtain 5.8 g of a chromene derivative of the following formula. Was.

Elemental analysis of this compound gave C 86.81%, H 7.62%, O
5.57%, calculated for C ₂₁ H ₂₂ O, C 86.9
Very good agreements were obtained with 0%, H 7.59% and O 5.52%. When the proton nuclear magnetic resonance spectrum was measured,
δ 7.2 to 8.3 ppm around 6 based on proton of naphthalene ring
H peak, 2H peak based on alkene protons near δ 6.0 to 7.0 ppm, bicyclo [3.
3.1] showed a broad peak at 14H based on the proton of the 9-nonylidene group. Furthermore, when ¹³ C-nuclear magnetic resonance spectrum was measured, bicyclo [3.3.
1] peak based on carbon of 9-nonylidene group, δ 110 to 16
A peak based on carbon of the naphthalene ring at around 0 ppm, δ80 ~
A peak based on the carbon of the alkene appears at around 110 ppm. From the above results, it was confirmed that the isolated product was the compound represented by the above structural formula (2).

Production Example 3 3.06 g (0.01 mol) of a chromanone compound represented by the following formula Was dissolved in 50 cc of anhydrous ether, the solution was cooled to 0 ° C., and a freshly prepared Grignard reagent CH ₃ MgCl (0.012 mol) was added dropwise to the solution in 50 cc of anhydrous ether over about 1 hour. After completion of the dropwise addition, the mixture was further stirred at room temperature for 2 hours, the ether solution was gently poured into cold water, the product was extracted with ether, the solution was dried over magnesium sulfate, and the ether was removed under reduced pressure. The compound was changed to a chromanol compound. Next, the chromanol compound was heated at 200 ° C. for about 10 minutes with anhydrous copper sulfate in a stream of carbon dioxide to produce a brown viscous liquid by chromatography on silica gel to obtain 2.47 g of a chromene derivative represented by the following formula.

Elemental analysis, proton nuclear magnetic resonance spectrum, and measurement of ¹³ C-nuclear magnetic resonance spectrum were performed in the same manner as in Production Example 1.
This compound was confirmed to be the compound represented by the above structural formula (3).

Production Example 4 1-acetyl-2-naphthol 10 g (0.054 mol), norcamphor 6.6 g (0.06 mol), and morpholine 8.7 g (0.10 m
ol) was dissolved in 300 cc of toluene, boiled for 15 hours, and water was separated. After the reaction, the toluene was removed under reduced pressure,
The remaining product was recrystallized from acetone to obtain 7.53 g of a compound represented by the following formula.

Next, 7.53 g of this compound was dissolved in 100 cc of methanol and reacted with methyl iodide to obtain 6.95 g of a chromanone compound represented by the following formula.

Next, the produced chromanone compound was changed to a chromanol compound in the same manner as in Production Example 3, and a dehydration reaction was performed. After separation and purification, 5.84 g of a chromene derivative represented by the following formula was obtained.

As in Production Example 1, elemental analysis, proton nuclear magnetic resonance spectrum and ¹³ C-nuclear magnetic resonance spectrum measurement confirmed that this compound was the compound represented by the above structural formula (4).

Production Example 5 5-n-octyloxy-1-hydroxy-2-acetonaphthone 10 g (0.0318 mol) and acetone 2.77 g (0.0477 m
ol) and 1.13 g (0.0159 mol) of pyrrolidine in 100 ml of toluene
Was prepared. The mixture was boiled for 10 hours and the water was separated. After completion of the reaction, toluene was removed under reduced pressure, the remaining chromanone compound was dissolved in 100 ml of methanol, and sodium borohydride was gradually added to obtain a chromanol compound. 6.0 g of this chromanol compound was mixed with 4.0 g of anhydrous copper sulfate in a stream of carbon dioxide at 150 to 160 ° C.
The mixture was heated for 10 minutes, and the brown viscous liquid was purified by chromatography on silica gel to obtain 3.8 g of a chromene derivative represented by the following formula.

As in Production Example 1, elemental analysis, proton nuclear magnetic resonance spectrum, and ¹³ C-nuclear magnetic resonance spectrum measurement confirmed that this compound was the compound represented by the above structural formula (5).

Production Examples 6 to 14 The chromene derivatives shown in Table 1 were synthesized in the same manner as in Production Examples 1 to 5.

The obtained product was subjected to structure analysis using the same means for structure confirmation as in Production Example 1, and as a result, was confirmed to be a compound represented by the structural formula shown in Table 1.

Production Example 15 3-thienylethylidene-2-adamantylidene succinic anhydride of the following formula: 3.4 g (0.01 mol) And 17.8 g of glycine-methyl ester of the following formula (0.02mo
l) Was dissolved in toluene and heated at 50 ° C. for 2 hours under a nitrogen atmosphere. After the reaction, the solvent was removed and dissolved in acetyl chloride. The mixture was refluxed for 1 hour to cyclize. The obtained compound was refluxed in O-dichlorobenzene for 6 hours to rearrange to the following fulgimide compound (1). This compound was purified by chromatography on silica gel using benzene and ether as eluents and was obtained as pale yellow needles from chloroform and hexane in 27% yield. Elemental analysis of this compound was C 66.78%, H 6.09%, N
3.36%, O 15.8%, S 7.96%, calculated values for C ₂₃ H ₂₅ O ₄ NS, C 67.15%, H 6.08%, N 3.41%, O 15.6
%, S 7.79%. When the proton nuclear magnetic resonance spectrum was measured, δ 7.0 to 8.0 ppm
Near 2H peak based on aromatic protons,
3H peak based on C-CH ₃ bond proton at δ2.7ppm, near δ3.7ppm 3H peak based on the proton of the methyl group in the bond, δ1.2
14H based on the proton of the adamantylidene group to ~ 2.5 ppm
Peak, protons translocated to δ 3-5 ppm by 1-5 and N-
The peak of 3H due to the CH ₂ -bond was shown.

Furthermore, ¹³ C-nuclear magnetic resonance spectrum ( ¹³ C-NMR was measured, and a peak based on the carbon of the adamantylidene group and the carbon of the methylene chain was found at about δ27 to 70 ppm, and a peak based on the carbon of the methyl group was found at about δ15.6 ppm. , Peak at δ110-160ppm based on carbon of thiophene ring, δ160-170pp
A peak based on the carbon of the C ＝ O bond appears near m.

From the above results, it was confirmed that the isolated product was a fulgimide compound (15) represented by the following structural formula.

Production Example 16 3.4 g (0.01 mol) of a fulgimide compound of the following formula In tetrahydrofuran, and add
1 g was reacted at room temperature to obtain 3 g of imidocali of the following formula.

This and bromoacetonitrile 1.2g (0.01mo
l) By reacting BrCH ₂ CN in dimethylformamide,
The following fulgimide compound (16) was obtained. This compound
Purification by chromatography on silica gel using chloroform and hexane as eluents afforded 57% yield as pale yellow crystals from hexane. Elemental analysis of this compound showed C 69.81%, H 5.80%, N 7.44%, O 8.
50%, a S 8.46% C 69.84% is calculated values for _{C 22 H 22 N 2 O 2} S, H 5.82%, N 7.41%, O 8.47%, S 8.47%
Very well matched. Also, when the proton nuclear magnetic resonance spectrum was measured, the peak of 2H based on the proton of the thiophene ring was found at around δ7.0 to 7.5 ppm, and at around δ4.5 ppm.
2H peak based on N-CH ₂ CN bond proton, δ3.7pp
1H peak based on 1.5-translocated proton around m, δ 2.
Peak of 3H based on -CH ₃ bond protons around 7 ppm,
The peak of 14H of the proton of the —CH ₂ — bond and the proton based on the adamantylidene group was shown around δ 1.3 to 2.5 ppm.

Furthermore, when ¹³ C-nuclear magnetic resonance spectrum ( ¹³ C NMR) was measured, a peak based on the carbon of the adamantylidene group was found at about δ27 to 70 ppm, a peak based on the carbon of the methyl group at about δ15.6 ppm, and a peak at about δ110 to 160 ppm. A peak based on the carbon of the thiophene ring and a peak based on the carbon of the C ＝ O bond appear in the vicinity of δ160 to 170 ppm.

From the above results, it was confirmed that the isolated product was a fulgimide compound (16) represented by the following structural formula.

Example 1 A polyvinyl alcohol film (0.2 mm thick) in which 5% by weight of the photochromic compound of Production Example 1 and 3% by weight of the fulgimide compound of Production Example 15 which had been previously coated with an adhesive reinforcement was dispersed on a glass plate and ethylene-acetic acid. The mold was set at the center of a mold composed of a gasket made of a vinyl copolymer, and allyl diglycol carbonate containing 3.0% by weight of isopropyl percarbonate was injected into the cavity on both sides of the mold to perform cast polymerization. The polymerization was carried out using an air furnace at 30 ° C. to 90 ° C. for 18 hours, gradually increasing the temperature, and maintaining the temperature at 90 ° C. for 2 hours. After the polymerization was completed, the mold was taken out of the air furnace, and after standing to cool, the polymer was removed from the glass of the mold. The fatigue life of the obtained molded product was measured with a Xenon Long Life Fade Meter FAL-25AX-HC manufactured by Suga Test Instruments Co., Ltd.

Further, a change in color tone was visually observed. The fatigue life (T _1/2 ) was represented by the time required for the absorbance at the maximum absorption wavelength of the chromene derivative to fall to half of the initial (T ₀ ) absorbance. However, the absorbance at T ₀ and T _1/2 is a value obtained by subtracting the absorbance of the unirradiated molded article at the maximum absorption wavelength based on the chromene derivative, and the absorbance at T ₀ after light irradiation.
It was measured after a lapse of 60 seconds.

 The results are shown in Table 3.

Examples 2 to 21 In Example 1, the type and amount of the raw material monomers of the resin containing the used photochromic compound dispersed therein, the photochromic compound, and the thermosetting resin were changed, and polymerization was performed by a known means in accordance with the raw material monomer. Other than that, it carried out similarly to Example 1. The results are shown in Table 3.

Comparative Example 1 The fatigue life of a polyvinyl alcohol film containing the photochromic compound obtained in Example 1 dispersed therein was measured in the same manner as in Example 1. The results are shown in Table 3.

Continuation of front page (56) References JP-A-3-252493 (JP, A) JP-A-3-252492 (JP, A) JP-A-3-115385 (JP, A) JP-A-3-121188 (JP) JP-A-3-76784 (JP, A) JP-A-2-69471 (JP, A) JP-A-3-11074 (JP, A) JP-A-3-11075 (JP, A) (58) Surveyed field (Int. Cl. ⁶ , DB name) C09K 9/02 G03C 1/73 G03C 1/76 REGISTRY (STN) CA (STN)

Claims (1)

(57) [Claims] 1. The following formula [A] However, R ¹ and R ² are the same or different alkyl groups, respectively, and they may be substituted together with a norbornylidene group or a substituted bicyclo [3.3.
1] may form a 9-nonylidene group, and R ³ and R ⁴
Are respectively the same or different hydrogen atoms, alkyl groups, aryl groups, aralkyl groups or substituted amino groups, Is an optionally substituted aromatic hydrocarbon group or an optionally substituted unsaturated heterocyclic group, and when R ¹ and R ² are alkyl groups, Is an alkyl group having 6 to 20 carbon atoms, an alkoxy group having 6 to 20 carbon atoms, -R ⁵ -SR ⁶ and Wherein R ⁵ is an alkylene group or OR ⁸ _n (where R ⁸ is an alkylene group and n is a positive integer);
R ⁶ and R ⁷ are the same or different alkyl groups,
Is -N <, -P <, It is. A) a bicyclic aromatic hydrocarbon group or a bicyclic unsaturated heterocyclic group having at least one substituent selected from the group consisting of: A photochromic molded article comprising a thermosetting resin layer laminated on both sides of a resin layer containing a photochromic compound represented by the formula (1) dispersed therein.