JPH03294846A - Photosensitive material - Google Patents

Abstract

PURPOSE:To obtain the photosensitive material which is sufficiently good in both of whiteness and light resistance and to obviate perspiration by using a specific UV absorbent. CONSTITUTION:The compd. expressed by formula I is incorporated into at least one layer of the photosensitive layers and/or at least one layer of the nonphotosensitive layers of the photosensitive material having the photosensitive layers on a base. In the formula I, R1 denotes a halogen atom, substd. or unsubstd. alkyl group, aryl group, alkoxy group, or aryloxy group; R2 denotes a hydrogen atom, substd. or unsubstd. alkyl group or aryl group. R3 denotes a substd. or unsubstd. alkyl group, alkoxy group or aryloxy group; (n) denotes 0 to 4 integer, and (m) denotes 0 to 3 integer. The photosensitive material which is free from the perspiration after long-term preservation and excellent in both of the whiteness and fastness to light is obtd. in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photosensitive material with improved whiteness and image stability.

[Behind the invention 1] There are many known effects of ultraviolet light on photographic products.

For example, static light generated during coating and drying of photographic products and transport can cause undesirable exposure of photographic products, and color reproducibility can deteriorate due to differences in the intensity of ultraviolet light from various light sources during photography. It will be done.

In addition, in photographic products in which images are formed using pigments other than metallic silver, the color fading of the pigment image by ultraviolet rays is particularly large, so when displaying photographic products for ornamental purposes, sunlight, which contains large amounts of ultraviolet rays, may cause significant discoloration. Discoloration occurs.

Furthermore, especially when polyethylene-coated paper is used as a support, the polyethylene is degraded by ultraviolet rays, resulting in cracking (tackling) of the support.

In addition to these, various organic additives are introduced into photographic products, and the photodecomposition products produced by photodecomposition reactions are often colored, which can cause stains, especially in non-image areas. This is a phenomenon that is often seen. For example, it is known that the uncolored areas (white background) of color photographic paper turn yellow when exposed to light (referred to as photo stain).
Improvements are desired.

It is well known and widely used to incorporate ultraviolet absorbers into silver halide emulsion layers or non-light-sensitive photographic layers in photographic products in order to alleviate the above-mentioned effects of ultraviolet radiation. A large number of ultraviolet absorbers have been proposed for this purpose, and are generally required to have the following properties.

In other words, (1) it has no absorption in the visible light region, (2) it has no effect on photographic products, and (3) it has high solubility in high-boiling organic solvents, and it is not affected by long-term light irradiation. In order to use it for the purpose of suppression, (4) it itself must have high light fastness.

The use of these ultraviolet absorbers in photosensitive materials is proposed, for example, in JP-A-60-222853 and JP-A-62-17895.
No. 4, No. 62-178961, 8 Mei 1 [1m, etc.].

Although the use of these ultraviolet absorbers clearly improves the light fastness of images, there is a problem in that the use of ultraviolet absorbers that greatly improve light fastness results in deterioration of whiteness; The use of a small amount of ultraviolet absorber results in a small improvement in light fastness, and for this reason, it has been difficult with conventional techniques to sufficiently improve both light fastness and whiteness.

Furthermore, when a large amount of ultraviolet absorber is added to a photosensitive material, there is a problem in that an oil component oozes out on the surface of the photosensitive material during long-term storage (referred to as sweating), and an improvement has been desired.

As a result of various studies, the inventors of the present invention not only were able to obtain a photosensitive material with sufficiently good whiteness and light resistance by using a specific ultraviolet absorber. It was discovered that sweating was also improved, leading to the present invention.

Therefore, a first object of the present invention is to provide a photosensitive material with improved whiteness and light fastness.

A second object of the present invention is to provide a photosensitive material that does not sweat after long-term storage and has excellent whiteness and light fastness.

[Structure of the Invention] The above-mentioned object of the present invention is to provide a photosensitive material having at least one photosensitive layer on a support, in which at least one of the photosensitive layers and/or at least one of the non-photosensitive layers is provided. General formula [
This is achieved by a photosensitive material characterized by containing a compound represented by [I].

General Formula [Equation] [In the formula, R1 represents a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group.

R2 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.

R3 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group.

n represents an integer from 0 to 4, and m represents an integer from 0 to 3. ] In the compound represented by the general formula [I] according to the present invention, R1 is a halogen atom (for example, a fluorine atom, a chlorine atom,
bromine atom, etc.), alkyl groups (e.g. methyl group, ethyl group), aryl groups (e.g. methyl group), alkoxy groups (
For example, it represents a methoxy group), an aryloxy group (such as a phenoxy group).

R2 is a hydrogen atom, an alkyl group (e.g. methyl group, t-butyl group, 2-ethyl-hexyl group, sec-dodecyl group, 1so-tridecyl group, cis-9-octadecenyl group, etc.), an aryl group (e.g. phenyl group) represents.

R3 is an alkyl group (e.g. t-amyl group, methyl group, etc.)
, represents an aryl group (eg, phenyl group), an alkoxy group (eg, methoxy group, 2-ethyl-hexyloxy group), or an aryloxy group (eg, phenoxy group).

Among the compounds represented by the general formula [I], the following - general formula [I]
-A] is preferred.

General formula [I-1], and R2 is the same as R2 in general formula [I]. Among the compounds represented by the general formula [I-A], compounds represented by the general formula [I-B1] are more preferred.

General formula [l-B1 [In the formula, R2' represents a branched alkyl group (eg, i-tridecyl group, etc.), and X' represents a hydrogen atom or a chlorine atom. ] Most preferred is a compound represented by the general formula [I-C].

General formula [l-C1 [wherein, X represents a hydrogen atom or a halogen atom [wherein,
X' represents a hydrogen atom or a chlorine atom, and R4 and R5 each represent an alkyl group (e.g. ethyl group, butyl group, etc.)
represents. ] Next, representative examples of compounds represented by the general formula [I] according to the present invention are listed.

Compound example -4 -5 ■-6 ! -7 -8 -9 ■-10 ■-16 -17 ■-18 ■-19 1-z.

■-11 ■-12 ■-13 ■-14 ■-15 -22 ■-23 The compound represented by the general formula [I] may be added to either the photosensitive layer or the non-photosensitive layer, but is preferably It is added at least to a non-photosensitive layer, and more preferably at least to a non-photosensitive layer that is farther from the support than the photosensitive layer furthest from the support. There is no limit to the amount added, but it is preferably 0.05 to 15 G/f, more preferably 0.1 to 5 Q/1 f.

The photosensitive materials used in the present invention can be, for example, color negative and positive films, color photographic paper, etc., but the method of the present invention is particularly effective when using color photographic paper that is intended for direct viewing. is effectively demonstrated.

The photosensitive materials of the present invention, including this color photographic paper,
It may be for a single color or for multiple colors.

In the case of multicolor silver halide photographic light-sensitive materials, in order to perform subtractive color reproduction, a silver halide emulsion layer containing magenta, yellow, and cyan couplers as photographic couplers and a non-light-sensitive layer are usually used. has a structure in which a suitable number and order of layers are laminated on a support, but the number and order of layers may be changed as appropriate depending on the important performance and purpose of use.

When the photosensitive material used in the present invention is a multicolor photosensitive material, the specific layer structure includes a yellow dye image forming layer, an intermediate layer, a magenta dye image forming layer, Particularly preferred is an arrangement of an interlayer, a cyan dye image-forming layer, an interlayer, and a protective layer.

In the emulsion layer of the light-sensitive material of the present invention, a dye is formed by a coupling reaction with an oxidized product of an aromatic primary amine developer (for example, 11 p-phenylene diamines, amine phenol derivatives, etc.) during color-forming image processing. A dye-forming coupler is used that forms. The dye-forming couplers are typically selected for each emulsion layer to form a dye that absorbs light in the emulsion layer's sensitive spectrum, with a yellow dye-forming coupler for the blue light-sensitive emulsion layer. However, a magenta dye-forming coupler is used in the green light-sensitive emulsion layer, and a cyan dye-forming coupler is used in the red light-sensitive emulsion layer. However, depending on the purpose, photosensitive materials may be produced using different combinations from the above.

It is desirable that any dye-forming coupler used in the light-sensitive material of the present invention has in its molecule a group called a ballast group, which makes the coupler non-diffusive and has 8 or more carbon atoms.

As the yellow dye-forming coupler, acylacetanilide couplers can be preferably used. Among these, benzoylacetanilide and pivaloylacetanilide compounds are advantageous.

Specific examples of yellow couplers that can be used include British Patent 1,0
No. 77.874, Japanese Patent Publication No. 45-40757, Japanese Patent Application Publication No. 4
No. 7-1031, No. 47-26133, No. 48-94
432, 50-87650, 51-3631, 52-115219, 54-99433, 54-133329, 56-30127, U.S. Patent No. 2,875,057, 3□253.924,
3,265,506, 3,408.194, 3,551,155, 3,551.156, 3
, No. 664,841, No. 3.725.072, No. 3,
730.722, fEJ No. 3,891,445, fEJ No. 3,900,483, fEJ No. 3.929.484, fEJ No. 3
, No. 933,500, No. 3.973.968, No. 3.
No. 990.896, 4.021.259@, Mukai 4o2
No. 2.620, No. 4,029,508, No. 4,0
No. 57,432, No. 4.106,942, No. 4.1
No. 33,958, No. 4.269.936, No. 4.2
No. 86,053, No. 4,304,845, No. 4,31
No. 4,023, No. 4,336,327, No. 4.356
．． 258@, No. 4386.155, No. 4,401,7
This is described in No. 52, etc.

As the magenta coupler, pyrazolone couplers can also be used, but birazolotriazole couplers are preferably used.

Specific examples of magenta couplers that can be used include, for example, Japanese Patent Application No. 6
3-16E+895, U.S. Patent No. 3.725.065, JP-A-59-99437, JP-A-58-42045
No. 59-162548, No. 59-171956,
No. 60-33552, eo-43esq@, No. 60
-172982 and 60-190779.

As the cyan dye-forming coupler, a phenol-based or def1-based cyan dye-forming coupler is used.

These cyan dye image-forming couplers are described in U.S. Pat.
No. 06,410, No. 2,356,475, No. 2,38
No. 2,598, No. 2,367.531, No. 2,369
, No. 929, No. 2.423730, No. 2,474,
No. 293, No. 2,476.008, No. 2.498,
No. 466, No. 2,545,687, No. 2,728
, No. 660, No. 2.772.162, No. 2,895,
No. 826, No. 2,976.146, No. 3,002.8
No. 36, No. 3,419,390, No. 3,446.62
No. 2, No. 3,476.563, No. 3,737,3
No. 16, No. 3, 758.308, No. 3,839,04
No. 4, British Patent No. 478,991, British Patent No. 945,542
No. 1,084,480, No. 1, 337.2
No. 33, No. 1,388,024, No. 1,543,
No. 040, JP-A-47-37425, JP-A No. 50-101
No. 35, No. 50-25228, No. 50-112038
No. 50-117422, No. 50-13044
No. 1, No. 51-6551, No. 51-37647, No. 51-52828, No. 51-108841, No. 5
No. 3-109630, No. 54-48237, No. 54-
No. 66129, No. 54-131931, No. 55-3
No. 2071, No. 59-146050, No. 59-31
No. 953, No. 60-117249, etc.

The dye-forming coupler used in the present invention is usually used in each silver halide emulsion layer at a concentration of 1.0% per mole of silver halide.
X 10-3 mol to 1 mol, preferably 1 X 10-
It can be used in the range of 2 mol-8X10-' mol. In the present invention, useful compounds can be added by various dispersion methods, such as oil protect dispersion method, dispersion method using water-insoluble polymers, and latex dispersion method.

Usually, useful compounds are dissolved in a high-boiling organic solvent with a boiling point of about 150°C or higher, if necessary in combination with a low-boiling point and/or water-soluble organic solvent, and a surfactant is added to a hydrophilic binder such as an aqueous gelatin solution. After emulsifying and dispersing it using a dispersing means such as a stirrer, homogenizer, colloid mill, flow jet mixer, or ultrasonic device, it may be added to the desired hydrophilic colloid layer. A step of removing the low boiling point organic solvent may be included simultaneously with the dispersion or dispersion.

The high boiling point organic solvent is preferably a compound with a dielectric constant of 5.5 or less, such as esters such as phthalates and phosphoric esters, organic acid amides, ketones, hydrocarbon compounds, etc. with a dielectric constant of 5.5 or less. be. More preferably, the dielectric constant is 5
．． 0 or less and 1.9 or more, vapor pressure at 100℃ is 0.5
It is a high boiling point organic solvent of 1 liter or less of a+mH. Among these, phthalate esters and phosphoric esters are more preferred. Most preferred are dialkyl phthalates having an alkyl group having 9 or more carbon atoms. Furthermore, the high boiling point solvent may be a mixture of two or more types.

Note that the dielectric constant indicates the dielectric constant at 30°C.

Preferred high boiling point organic solvents include the following compounds.

(1) Di-2-ethylhexyl phthalate (2) Dioctyl phthalate (3) Di-minonylphthalate (4) Di-1-decyl phthalate (5) Didodecylphthalate (6) Treatynonyl phosphate (7) Treatydecyl Phosphate (8) Treated dodecyl phosphate (9) G2-
Ethylhexyl adipate (10) Di-2-ethylhexyl azelate (11) Di-2-ethylhexyl sepacate (12) Octyl decyl phthalate (13) Oleyl benzoate (14) Benzyl benzoate These high boiling point organic solvents are , generally 0 for couplers
It is used in a proportion of ~400% by weight. Preferably it is 10 to 100 ffiffi% based on the coupler.

As the binder (or protective colloid) used in the photosensitive material of the present invention, gelatin is advantageously used, but gelatin derivatives, graft polymers of gelatin and other polymers, proteins, sugar derivatives, and cellulose derivatives may also be used. Hydrophilic colloids such as synthetic hydrophilic polymeric materials such as , single or copolymers may also be used.

The photographic emulsion layer and other hydrophilic colloid layers of the light-sensitive material of the present invention are hardened by using alone or in combination with a hardening agent that crosslinks binder (or protective colloid) molecules and increases film strength. It is desirable to add the hardening agent in an amount that can harden the photosensitive material to the extent that it is not necessary to add the hardening agent to the processing solution, but it is also possible to add the hardening agent to the processing solution.

The photosensitive material of the present invention can be provided with auxiliary layers such as a filter layer, an antihalation layer and/or an antiirradiation layer. These layers and/or the emulsion may contain dyes that flow out of the color light-sensitive material or are bleached during development.

A matting agent can be added to the silver halide emulsion layer and/or other hydrophilic colloid layer of the light-sensitive material of the present invention for the purpose of reducing the gloss of the light-sensitive material, increasing the ease of writing, preventing mutual scratching of the light-sensitive materials, etc. .

A lubricant can be added to the photosensitive material of the present invention in order to reduce sliding friction.

The photosensitive material of the present invention may contain an antistatic agent for the purpose of preventing static electricity. Antistatic agents are sometimes used in the antistatic layer on the side of the support on which the emulsion is not laminated, or they are used to protect the emulsion layer and/or the side other than the emulsion layer on which the emulsion layer is laminated with respect to the support. The layer may be used as a colloid layer.

The photographic emulsion layer and/or other hydrophilic colloid layer of the light-sensitive material of the present invention includes improved coating properties, antistatic properties, improved slipperiness,
Various surfactants are used for the purpose of emulsification dispersion, prevention of adhesion, and improvement of photographic properties (such as development acceleration, contrast enhancement, sensitization, etc.).

The photographic emulsion layer and other layers of the light-sensitive material of the present invention are baryta paper or paper laminated with α-olefin polymer, etc.
Flexible reflective supports such as synthetic paper, films made of semi-synthetic or synthetic polymers such as cellulose acetate, cellulose nitrate, polystyrene, polyvinyl chloride, polyethylene tereftate, polycarbonate, polyamide, glass, metal, ceramics, etc. Can be applied to rigid bodies, etc.

The photosensitive material of the present invention can be prepared by subjecting the surface of the support to corona discharge, ultraviolet irradiation, flame treatment, etc., if necessary, and then directly or applying an undercoat layer (adhesiveness, antistatic property, and dimensional stability of the support surface). ,
Friction resistance, hardness, anti-halation properties, friction properties and/or
or one or more subbing layers for improving other properties).

When coating a photosensitive material using the silver halide emulsion of the present invention, a thickener may be used to improve coating properties.
Extrusion coating and curtain coating, which allow two or more layers to be applied simultaneously, are particularly useful as @fabric methods.

The color developing agent used in the color developing solution in the present invention includes known color developing agents that are widely used in various color photographic processes.

In the present invention, after color development, the material is immediately treated with a processing solution having a bleaching ability, but the processing solution having a bleaching ability may also be a processing solution having a fixing ability (a so-called bleach-fix solution).

As the bleaching agent used in the bleaching step, a metal complex salt of an organic acid is used.

[Examples] Hereinafter, the present invention will be specifically explained with reference to Examples, but the embodiments of the present invention are not limited thereto.

Example 1 Magenta coupler (M-A) 50o^ boiling point organic solvent D
80 mβ of NP and 2001 g of ethyl acetate were dissolved in a mixed solvent, and this solution was added to a 5% aqueous gelatin solution containing a dispersing aid, triisopropylnaphthalene sulfonic acid, and dispersed with a homogenizer. After finishing the obtained dispersion liquid to 1.5001 g, it was kept warm at 35°C. Apply this dispersion to 3
% gelatin aqueous solution 1.000112, and an additional green-sensitive silver chlorobromide emulsion 400! I+ (monodispersed emulsion containing 80 mol% silver bromide, 30 g of silver ffi) was added, and the third
A coating solution for each layer was prepared.

Similarly, prepare coating solutions for other layers, and apply each of the following layers from the support side onto a corona discharge-treated polyethylene-coated paper support (the polyethylene on the emulsion layer side contains titanium oxide and a bluing agent). Color photosensitive material sample 1 was prepared by coating in sequence.

1st layer; blue-sensitive emulsion layer yellow coupler (Y-1) at 0.8Q/1';
Anti-fading agent (ST-1) 0.3111/f, blue sensitivity j3! The silver bromide emulsion (containing 20 mol% silver chloride and 80 mol% silver bromide) was converted into silver at 0.3Q/f, the high boiling point organic solvent (DNP) was 0.3 g/f, and the gelatin was 1.0 Q/f.
Apply so that the coating material m is 2g/f.

2nd layer: Intermediate layer Hydroquinone derivative (HQ-1) was coated at a coating amount of 0.05 Q/f and gelatin was coated at a coating amount of 1.0 G/f.

3rd layer: Green-sensitive emulsion layer Magenta coupler (M-A) at 0.4Q/f, green-sensitive silver chlorobromide emulsion (silver chloride 20 mol%, silver bromide 80 mol%)
content) in terms of silver, 0.2Q/f, high boiling point organic solvent (DIDP) in 0.4Q/f, AI-10,
Apply 01MV and gelatin to a coating amount of 1.4 (J/f).

4th layer: Intermediate layer ultraviolet absorber (UV-1) at 0.3o/f, (UV-2
) to 0.3 (1/v", DNP to 0.40/1'
, hydroquinone derivative (HQ-1) at 0.05Q/f
, A I 1 o, 02a/12 and gelatin at 1.0 g/n', oil-soluble bluish tint with a small amount of dye, to form a coating material m.

No. 511: Red-sensitive emulsion layer containing cyan coupler (C-1) at 0.2Q/f, (C-
2) and 0.2Q/v'% anti-fading agent (ST-1).
2C1/f, DOPwo014o/v, red photosensitive Ma
IA silver oxide emulsion (containing 20 mol% silver chloride and 80 mol% silver bromide) is converted into silver and has a silver content of 0.3Q/f and gelatin 1.4
Apply so that it becomes coating material m of Q/v'.

6th layer: Intermediate layer ultraviolet absorber (tJV-1) 0. IQ/l', (UV
-2) is 0.1Ω/12, HQ-1 is 0.02g/l'
, polyvinylpyrrolidone (PVP) at 0.19/v.

DNP at 0.2 (J/m' and gelatin at 0.4 CI/
Apply so that the coating amount is i'.

7th layer: protective layer Apply gelatin to a coating amount of 0.9G/1'.

This sample was designated as Sample 1. Also, the 4th layer, 5th layer and 6th layer
Similar samples were prepared except that the combinations of ultraviolet absorber and cyan coupler and yellow coupler in the layer were changed as shown in Table 1.

-1 1 DOP (Nooctyl 7-talate) DNP (Tunonyl 7-talate) DIDP (Diisodecyl 7-talate) pVP (Polyvinylpyrrolidone) C, -2 f UV-1 UV-2 ST-1 Y-1 Δl-1 Also hardener Sodium 2,4-dihydroxy-6-chloro-8-triazine was used.

Further, each of the obtained samples was subjected to wedge exposure with red light and blue light using a photosensitive needle (model KS-7 manufactured by Konica ■), and the following treatments were performed.

Processing process Processing temperature Processing time Color development 32.8°C 3 minutes 30 seconds Bleach fixing 32.8°C 1 minute 30 seconds Stabilization 32
．． 8℃ 3 minutes 30 seconds (Color developer composition) Color developer 1! Among them: N-ethyl-N-β-methanesulfonamidoethyl-3-methyl-4-amine aniline sulfate 4. Og hydroxylamine sulfur Ml! 2. OQ Potassium carbonate 25.0 Q Sodium chloride θ, I Q Sodium bromide
0.2g anhydrous 1iI! Sodium I acid 2.0g benzyl alcohol
10.0d polyethylene glycol (average degree of polymerization 400) 3.0v2
Contains. Adjust the pH to 1o,o using sodium hydroxide.

(Bleach-fix solution composition) 1 fl of bleach-fix solution contains 60.0 g of iron sodium salt of ethylenediaminetetraacetate, ioo, o g of sodium thiosulfate, 20.0 g of sodium bisulfite (5.0 g of sodium metabisulfite). Using sulfuric acid Adjust pH to 7.0.

(Stabilizing liquid) In the stabilizing liquid 1y, 5-chloro-2-methyl-4-isothiazolin-3-one 1.0g ethylene glycol 1.0g 1-hydroxyethylidene-1,1-diphosphone 11
2. OQ ethylenediaminetetra vinegar @ t
, (1(ammonium monohydroxide (20% aqueous solution)>
3. OQ ammonium sulfite 3.0
Contains g. I) H-7,0 with sulfuric acid or potassium hydroxide
Adjust to.

The processing was carried out after the photosensitive material had been run for 501 tons using an automatic developing machine with a multi-stage countercurrent stabilization system.

After the treatment, the cyan and yellow colored images of each sample obtained were tested for light fastness, whiteness, and perspiration resistance in the following manner.

[Light resistance test] Each sample was exposed to sunlight for 30 days using an Underglass outdoor H8 unit, and the reflection density of red light and blue light before and after fading was measured. The degree of fading due to light (fading rate) was determined as follows.

Fading rate - D - D0 × 100 0 D〇 - Density before photofading D = Density after photofading [Measurement of white background property] The unexposed area (white area) of each sample was measured with a Hitachi Color Analyzer Model 607, a*, l)* values were calculated. (The larger the b value, the greater the yellowing) [Perspiration resistance] After storing each cyan colored sample in a constant temperature bath at 85°C and 60% R, H, visually observe the degree of oil component seepage on the sample surface. evaluated.

UV-3 C-3 Example 2 M-
The same sample was prepared as B, except that the antifading agent in the third layer was changed to the combination shown in Table 2. In addition, samples were prepared in which the UV absorbers in the 4th and 6th layers and the magenta coupler and antifading agent in the 3rd layer were changed in the combinations shown in Table 2.
A magenta image was obtained by exposure to green light, and the same evaluation as in Example 1 was performed.

-B 5T-5 ST-6 ST-7 For sample 27, the boiling point organic solvent addition m of the ultraviolet absorbers in the fourth and sixth layers was 00/l'.

[Effects of the Invention] From the results in Tables 1 and 2, the samples of the present invention provided images with higher whiteness and better light resistance than the comparative samples. It also had good perspiration resistance, and clear images were obtained even after storage.

Claims (1)

[Claims] In a photosensitive material having at least one photosensitive layer on a support, at least one of the photosensitive layers and/or at least one of the non-photosensitive layers has the general formula [I]. A photosensitive material characterized by containing the compound shown below. General Formula [I] ▲ Numerical formulas, chemical formulas, tables, etc. Represents an unsubstituted aryloxy group. R_2 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. R_3 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group. n represents an integer from 0 to 4, and m represents an integer from 0 to 3. ]