JPH07152119A - Silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain the color photographic sensitive material high in sensitivity and superior in color reproduction performance and small in fluctuation among printers by incorporating each specified coupler in a silver halide emulsion layer and a green-sensitive silver halide emulsion layer. CONSTITUTION:At least one of the silver halide emulsion layers contains one of the couplers represented by the formula: A-(TIME)n-INHIBIT in which A is a coupler residue; TIME is a timing group for finally releasing INHIBIT controlled at a suitalble time; INHIBIT is a group to be released to give a triazole ring group as a development inhibitor represented by formula I or II; R11 is alkylthio; R12 is H, alkyl, or the like: and R13 is alkyl, cycloalkyl, or the like. At least one of the green-sensitive layers contains at least one kind of coupler represented by formula III in which R<1> is halogen or alkoxy; and R<2> is acylamino, sulfonamido, or the like.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a silver halide color photographic light-sensitive material, and more particularly to a silver halide color photographic light-sensitive material having high sensitivity, excellent color reproducibility, and good printer-to-printer variation. is there.

[0002]

2. Description of the Related Art In recent years, development of a silver halide color photographic light-sensitive material excellent in color reproducibility and sharpness has been strongly desired.

As a means for improving sharpness, a DIR compound is known which reacts with an oxidized product of a color developing agent to release a development inhibitor. For example, U.S. Pat.
No. 3,701,783, No. 3,632,345, etc.
The DIR compound having a mercapto-based development-inhibiting group described in JP-A-49-77635 has a strong development-inhibiting effect in the layer, and fine particles of an image, improvement of sharpness and gradation control are possible, but adjacent layers The effect of suppressing development on the so-called so-called inter-image effect was small and the color reproducibility was unsatisfactory.

[0004] Further, the development-inhibiting group described in US Pat. No. 3,148,062 and JP-A-49-122355 and JP-A-52-82424 has an azole type, for example, a benztriazole type DIR.
The compound and the DIR compound in which the hydrophilic group is substituted for the mercapto-type development inhibiting group described in JP-A-55-135835 has a large diffusibility of the inhibiting group in gelatin or silver halide, Compared to the above-mentioned mercapto compounds, the edge effect and the interimage effect can be made larger, but the development inhibiting property of the inhibiting group is small,
In order to obtain a sufficient edge effect and inter-image effect, it is necessary to add a large amount, and the DIR compound added to the emulsion decomposes during storage over time to release a development-inhibiting group and desensitize. It had drawbacks.

Further, D obtained by substituting a branched alkyl group for the mercapto type development inhibiting group described in European Patent No. 354,532.
The IR compound can produce the edge effect and the inter-image effect to some extent without deteriorating the development inhibiting property, but it is sufficiently satisfied with the recent demand for the sharpness and color reproducibility of photographic images. It wasn't possible.

On the other hand, in recent years, when a color negative film is used to print on color paper, the hue of the finished color print is deviated due to the difference in the type of printing equipment (hereinafter referred to as printer) used (hereinafter, referred to as "printer").
Variation between printers. ) Was found, and one of the causes was found to be due to the color tone of the coloring dye obtained from the magenta coupler used for the color negative film.

The variation between printers can be remarkably improved by using the magenta coupler described in Japanese Patent Application No. 3-273425, but the level is still not sufficient.

[0008]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a silver halide color photographic light-sensitive material having high sensitivity, excellent color reproduction tax, and good printer-to-printer variation.

[0009]

The above objects of the present invention are as follows.
In a silver halide color photographic light-sensitive material having a silver halide emulsion layer comprising a blue-sensitive layer, a green-sensitive layer and a red-sensitive layer on a support, at least one of the silver halide emulsion layers has the following general formula [I ] At least one coupler represented by the following formula is contained, and at least one of the green-sensitive silver halide emulsion layers contains at least one coupler represented by the following general formula [MI]. Achieved by the characteristic silver halide color photographic light-sensitive material.

General formula [I] A- (TIME) n-INHIBIT (In the formula, A represents a coupler residue. TIME represents a timing group, and is bonded to the coupling group A in general formula [I], After being cleaved from the coupler by the reaction with the oxidized product of the color developing agent, it is cleaved sequentially, and finally INHIBIT is appropriately controlled and released. N is 0 or 1.) INHIBI
T is a group which becomes a development inhibitor by the above-mentioned release, and is represented by the general formula [I
a] or a triazole ring group represented by the general formula [Ib].

[0011]

[Chemical 3]

(In the general formulas [Ia] and [Ib], R ₁₁ is an alkylthio group, and R ₁₂ is H, an alkyl group, an alkylthio group, an aryl group or a heterocyclic group. The substituents R ₁₁ and At least one of R _{12 is} a group capable of being hydrolyzed in an aqueous alkali at a distance of 2 to 4 atoms from the triazole ring, —CO—OR ₁₃ , —O—CO—OR ₁₃ , or —CO—CO.
Containing -R _13. R ₁₃ is an alkyl group, a cycloalkyl group, or an aryl group. )

[0013]

[Chemical 4]

(Wherein R ¹ represents a halogen atom or an alkoxy group, and R ² represents an acylamino group, a sulfonamide group, an imide group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an alkoxycarbonylamino group or an alkoxy group. . 1 represents an integer of 0 to 4.)
The present invention will be described in detail below.

First, the compound represented by the above general formula [I] according to the present invention will be explained. In the general formula [I], INHIBIT is a group serving as a development inhibitor, and
a] and [Ib] are monocyclic triazole ring groups. In the general formulas [Ia] and [Ib], R ₁₁ or R
_The alkylthio group represented by ₁₂ preferably has 1 carbon atom.
~ 7 and may be substituted by one of the above hydrolysable groups.

The alkyl group represented by R ₁₂ or R ₁₃ is
It preferably has 1 to 7 carbon atoms and may be substituted with a halogen atom, a cyano group or the like.

The heterocyclic group represented by R ₁₂ is, for example, a furyl group or the like.

The aryl group represented by R ₁₃ is, for example, a phenyl group or the like, which may be substituted with an alkyl group, a halogen atom or the like.

2-4 which define the spacing between the groups --CO--OR ₁₃ , --O--CO--OR ₁₃ or --O--CO--R ₁₃ which can be hydrolyzed in aqueous alkali and the triazole ring group. The atoms of can be carbon atoms and heteroatoms.

Typical examples of the triazole ring group represented by INHIBIT are shown below.

[0021]

[Chemical 5]

[0022]

[Chemical 6]

[0023]

[Chemical 7]

[0024]

[Chemical 8]

In the general formula [I], TIME represents a timing group, and a typical example thereof is the following general formula [D
-1] to [D-9] are included.

[0026]

[Chemical 9]

In the general formula [D-1] to general formula [D-5] and general formula [D-8], Rd ₁ is a hydrogen atom, a halogen atom or alkyl, cycloalkyl, alkenyl, aralkyl, alkoxy, alkoxycarbonyl. , Anilino, acylamino, ureido, cyano, nitro, sulfonamide, sulfamoyl, carbamoyl, aryl,
Represents a carboxy, sulfo, hydroxy or alkanesulfonyl group. Further, Rd ₁ is represented by the general formula [D-
1] to general formula [D-3], general formula [D-5] and general formula [D-8], when l is 2 or more, Rd _{1 s} are bonded to each other to form a condensed ring. Good.

In the general formula [D-1], the general formula [D-4], the general formula [D-5] and the general formula [D-9], Rd ₂
Represents an alkyl, alkenyl, aralkyl, cycloalkyl, heterocycle or aryl group.

In the general formula [D-6] and general formula [D-7], Rd ₃ is a hydrogen atom or alkyl, alkenyl,
It represents an aralkyl, cycloalkyl, heterocyclic or aryl group.

In the general formula [D-9], Rd ₄ and Rd
d ₅ represents a hydrogen atom or an alkyl group (preferably an alkyl group having 1 to 4 carbon atoms), and n ₂ represents an integer of ₂ to 4. A plurality of Rd ₄ and Rd ₅ may be the same or different.

In the general formula [D-1] and general formulas [D-5] to [D-8], k represents an integer of 0, 1 or 2.

In the general formulas [D-1] to [D-3], the general formula [D-5] and the general formula [D-8], l is 1
Represents an integer of 4;

In the general formula [D-6], m ₂ represents an integer of 1 or 2.

When l and m ₂ are 2 or more, each Rd ₁ and Rd ₃
May be the same or different.

In the general formulas [D-6] to [D-8], B is an oxygen atom or -N (Rd ₂ )-(Rd ₂ is a general formula [D-1] or a general formula [D- 4], and general formula [D-5] and general formula [D-9] have the same meanings as Rd ₂ .

In the general formula [D-6]

[0037]

[Chemical 10]

Represents a single bond or a double bond. When m ₂ is 2, it is a single bond and when m ₂ is 1, it is a double bond.

Among the general formulas [D-1] to [D-9] represented by TIME, the general formulas [D-2] to [D]
-4] is preferred.

In the general formula [I], the coupler component represented by A includes a yellow image-forming dye coupler residue, a magenta image-forming dye coupler residue, a cyan image-forming dye coupler residue and a non-color-forming coupler residue. Can be mentioned. Of these, preferred are yellow image forming dye coupler residues.

Next, specific examples of the compound represented by the general formula [I] according to the present invention will be shown, but the present invention is not limited thereto.

[0042]

[Chemical 11]

[0043]

[Chemical 12]

[0044]

[Chemical 13]

[0045]

[Chemical 14]

[0046]

[Chemical 15]

[0047]

[Chemical 16]

D represented by the general formula [I] according to the present invention
The IR compound is preferably used in an amount of 0.0001 to 0.1 mol, and particularly preferably 0.001 to 0.05 mol, per mol of silver halide.

Next, the above general formula [MI] according to the present invention.
The magenta coupler represented by (hereinafter referred to as magenta coupler [MI]) will be described.

In the general formula [MI], the halogen atom represented by R ¹ is, for example, a chlorine atom, a bromine atom,
A fluorine atom can be mentioned, and as the alkoxy group,
Examples thereof include a methoxy group and a dodecyloxy group. R
Preferred as ¹ is a chlorine atom.

The acylamino group represented by R ² is
For example, 2,4-di-t-pentylphenoxyacetamide group, 4
Examples include-(2,4-di-t-pentylphenoxy) butanamide group, examples of the sulfonamide group include 4-dodecyloxyphenylsulfonamide group, and examples of the imide group include octadecenylsuccinimide. Examples of the carbamoyl group include a 4- (2,4-di-t-pentylphenoxy) butylaminocarbonyl group, and examples of the sulfamoyl group include a tetradecanesulfamoyl group and an alkoxycarbonyl group. Examples of the group include a tetradecaneoxycarbonyl group, examples of the alkoxycarbonylamino group include a dodecyloxycarbonylamino group, and
Examples of the alkoxy group include a methoxy group, an ethoxy group and an octyloxy group. Preferred as R ² is an acylamino group substituted in the p-position with respect to R ¹ . Also, l is preferably 1.

The general formula [M-
Specific examples of the compound represented by I] are shown below, but the present invention is not limited thereto.

[0053]

[Chemical 17]

[0054]

[Chemical 18]

The magenta coupler [MI] is usually 1 × 10 ^-3 to 1 mol, preferably 1 mol, per mol of silver halide.
× can be used in 10 ^-2 mol to 8 × 10 ^-1 mols.

The coupler of the present invention can also be used in combination with other types of couplers.

Magenta coupler [MI] according to the present invention
There is no particular limitation on the method of incorporating the DIR compound and the DIR compound into the color photographic light-sensitive material, but all methods known for ordinary silver halide photographic light-sensitive materials can be used. That is,
As shown in U.S. Pat.No. 2,322,027, a method of dissolving in a high boiling point solvent and dispersing as fine oil droplets, U.S. Pat.
186,849, a method of dissolving and dispersing with a diffusion resistant group and a water-soluble group, as shown in US Pat. No. 2,397,864, a method of incorporating as a component of a polymer compound, JP-A-51-59942 No. 51-59943, there is a method of filling a latex polymer or a method of mechanically pulverizing and dispersing by a colloid mill.

As the silver halide emulsion used in the light-sensitive material of the present invention, any ordinary silver halide emulsion can be used. The emulsion can be chemically sensitized by a conventional method, and can be optically sensitized to a desired wavelength region by using a sensitizing dye.

Antifoggants, stabilizers and the like can be added to the silver halide emulsion. It is advantageous to use gelatin as the binder of the emulsion.

The emulsion layer and other hydrophilic colloid layers may be hardened, and may contain a plasticizer and a dispersion (latex) of a water-insoluble or sparingly soluble synthetic polymer. A coupler is used in the emulsion layer of the color photographic light-sensitive material.

Further, by coupling with a colored coupler having a color correcting effect, a competing coupler and an oxidized product of a developing agent, a development accelerator, a bleaching accelerator, a developer, a silver halide solvent, a toning agent, a hardener Compounds that release photographically useful fragments such as film agents, antifoggants, antifoggants, chemical sensitizers, spectral sensitizers, and desensitizers can be used.

The light-sensitive material may be provided with auxiliary layers such as a filter layer, an antihalation layer and an anti-irradiation layer. In these layers and / or emulsion layers,
Dyes may be included which are bleached or bleached from the light-sensitive material during the development process. For the light-sensitive material, formalin scavenger, fluorescent whitening agent, matting agent, lubricant, image stabilizer, surfactant, color antifoggant, development accelerator,
Development retarders and bleaching accelerators can be added.

As the support, paper laminated with polyethylene or the like, polyethylene terephthalate film, baryta paper, cellulose triacetate or the like can be used.

In order to obtain a dye image using the light-sensitive material of the present invention, a commonly known color photographic process can be carried out after exposure.

[0065]

EXAMPLES Specific examples of the present invention will be described below, but the embodiments of the present invention are not limited to these.

In all of the following examples, the addition amount in the silver halide photographic light-sensitive material is the number of grams per 1 m ² unless otherwise specified. Also, silver halide and colloidal silver are shown in terms of silver, and sensitizing dyes are shown in the number of moles per mole of silver.

Example 1 A multilayer color photographic light-sensitive material (Sample 1) was prepared by sequentially forming each layer having the following composition on the triacetyl cellulose film support from the support side.

First layer: antihalation layer (HC-1) Black colloidal silver 0.20 UV absorber (UV-1) 0.20 Colored coupler (CC-1) 0.05 Colored coupler (CM-1) 0.05 High boiling point solvent (Oil-) 1) 0.20 gelatin 1.5 second layer; intermediate layer (IL-1) UV absorber (UV-1) 0.01 high boiling solvent (Oil-1) 0.01 gelatin 1.5 third layer; low sensitivity red-sensitive emulsion layer (RL) iodine Silver bromide emulsion (Em-1) 0.8 Silver iodobromide emulsion (Em-2) 0.8 Sensitizing dye (SD-1) 2.5 × 10 ^-4 Sensitizing dye (SD-2) 2.5 × 10 ^-4 Sensitizing dye (SD-3) 0.5 × 10 ^-4 Cyan coupler (C-1) 1.0 Colored cyan coupler (CC-1) 0.05 DIR compound (DA) 0.002 High boiling point solvent (Oil-1) 0.5 Gelatin 1.5 Fourth layer; High-sensitivity red-sensitive emulsion layer (RH) Silver iodobromide emulsion (Em-3) 2.0 Sensitizing dye (S D-1) 2.0 × 10 ^-4 sensitizing dye (SD-2) 2.0 × 10 ^-4 sensitizing dye (SD-3) 0.1 × 10 ^-4 cyan coupler (C-1) 0.25 cyan coupler (C-2) 0.05 Colored cyan coupler (CC-1) 0.015 DIR compound (DA) 0.05 High boiling point solvent (Oil-1) 0.2 Gelatin 1.5 Fifth layer; Intermediate layer (IL-2) Gelatin 0.5 Sixth layer; Low sensitivity green sensitivity Emulsion layer (GL) Silver iodobromide emulsion (Em-1) 1.3 Sensitizing dye (SD-4) 5 × 10 ^-4 Sensitizing dye (SD-5) 1 × 10 ^-4 Magenta coupler (MA) 0.50 Colored magenta coupler (CM-1) 0.01 DIR compound (DB) 0.04 High boiling point solvent (Oil-2) 0.3 Gelatin 1.0 7th layer; High sensitivity green sensitive emulsion layer (GH) Silver iodobromide emulsion (Em-3) ) 1.3 Sensitizing dye (SD-6) 1.5 × 10 ^-4 Sensitizing dye (SD-7) 2.5 × 10 ^-4 Sensitizing dye (SD-8) 0.5 × 10 ^-4 Maze Coupler (MA) 0.15 Colored magenta coupler (CM-2) 0.05 DIR compound (D-B) 0.01 High boiling point solvent (Oil-2) 0.2 Gelatin 1.0 Eighth layer; Yellow filter layer (YC) Yellow colloidal silver 0.1 color Anti-staining agent (SC-1) 0.1 High boiling point solvent (Oil-3) 0.1 Gelatin 0.8 9th layer; Low sensitivity blue-sensitive emulsion layer (BL) Silver iodobromide emulsion (Em-1) 0.25 Silver iodobromide emulsion ( Em-2) 0.25 Sensitizing dye (SD-10) 7 × 10 ^-4 Yellow coupler (Y-1) 0.5 Yellow coupler (Y-2) 0.1 DIR compound (DC) 0.01 High boiling point solvent (Oil-2) 0.3 Gelatin 1.0 10th layer; high-sensitivity blue-sensitive emulsion layer (BH) Silver iodobromide emulsion (Em-4) 0.4 Silver iodobromide emulsion (Em-1) 0.4 Sensitizing dye (SD-9) 1 × 10 ^{− 4} sensitizing dye (SD-10) 3 × 10 -4 yellow coupler (Y-1) 0.30 b Low coupler (Y-2) 0.05 High boiling point solvent (Oil-2) 0.15 Gelatin 1.1 11th layer; 1st protective layer (PRO-1) Fine grain silver iodobromide emulsion (average grain size 0.08 μm, AgI content 2 mol) %) 0.4 UV absorber (UV-1) 0.10 UV absorber (UV-2) 0.05 High boiling point solvent (Oil-1) 0.1 High boiling point solvent (Oil-3) 0.1 Formalin scavenger (HS-1) 0.5 Formalin scaveng Ja (HS-2) 0.2 Gelatin 1.0 12th layer; 2nd protective layer (PRO-2) Surfactant (Su-1) 0.005 Alkali-soluble matting agent (average particle size 2 μm) 0.05 Polymethylmethacrylate (average particle size) 3 μm) 0.05 Sliding agent (WAX-1) 0.04 Gelatin 0.6 In addition to the above composition, coating aid Su-2, dispersion aid Su-3, hardeners H-1 and H-2, stabilizers are added to each layer. ST-
1, antifoggants AF-1 and AF-2 were added.

Em-1 Core / shell type emulsion Em having an average grain size of 0.46 μm, an average silver iodide content of 7.0 mol%, and a monodisperse (14% of distribution) low surface silver iodide (2 mol%). -Average grain size 0.30 µm Average silver iodide content 2.0 mol%, monodisperse (14% distribution) surface silver bromide-containing core / shell type emulsion Em-3 Average grain size 0.81 µm Average iodide Surface low silver iodide with a silver content of 7.0 mol% and monodispersity (width of distribution 14%) (1.
0 mol%)-containing core / shell type emulsion Em-4 average grain size 0.95 μm average silver iodide content 8.0 mol%, monodisperse (width of distribution 14%) low surface silver iodide (0.
5 mol%)-containing core / shell type emulsion Incidentally, the breadth of the distribution is the breadth of the distribution = standard deviation value / average grain size × 100.

[0070]

[Chemical 19]

[0071]

[Chemical 20]

[0072]

[Chemical 21]

[0073]

[Chemical formula 22]

[0074]

[Chemical formula 23]

[0075]

[Chemical formula 24]

[0076]

[Chemical 25]

[0077]

[Chemical formula 26]

Next, in the sample 1, the DIR compound (DC) added to the ninth silver halide emulsion layer and the magenta coupler (added to the sixth and seventh silver halide emulsion layers ( Samples 2-10 were prepared by adding equimolar DIR compounds and magenta couplers in place of MA) as shown in Table 1.

Each sample No. 1 to 10 created in this way
Was exposed to a wedge for 1/100 second using white light, and then the following development processing was performed.

Development process (38 ° C) Color development 3 minutes 15 seconds Bleach 6 minutes 30 seconds Water washing 3 minutes 15 seconds Settling 6 minutes 30 seconds Water washing 3 minutes 15 seconds Stabilization 1 minute 30 seconds Drying Each treatment The composition of the treatment liquid used in the process is as follows.

<Color developer> 4-amino-3-methyl-N-ethyl-N- (β-hydroxyethyl) aniline / sulfate 4.75 g anhydrous sodium sulfite 4.25 g hydroxylamine / 1/2 sulfate 2.0 g anhydrous Potassium carbonate 37.5 g Sodium bromide 1.3 g Nitrilotriacetic acid trisodium salt (monohydrate) 2.5 g Potassium hydroxide 1.0 g Water is added to make 1 liter, and the pH is adjusted to 10.05.

<Bleach> Ethylenediaminetetraacetic acid iron (III) ammonium salt 100 g Ethylenediaminetetraacetic acid diammonium salt 10.0 g Ammonium bromide 150.0 g Glacial acetic acid 10 ml Water is added to 1 liter and adjusted to pH 6.0.

<Fixer> Ammonium thiosulfate (50% aqueous solution) 175.0 g anhydrous sodium sulfite 8.5 g sodium metasulfite 2.3 g Water is added to make 1 liter, and pH is adjusted to 6.0 with acetic acid.

<Stabilizing Solution> Formalin (37% aqueous solution) 1.5 ml Conidax (manufactured by Konica Corporation) 7.5 ml Water is added to make 1 liter.

Sensitometric measurement was performed on the obtained treated sample to determine the blue sensitivity. The sensitivity was shown as a relative value with the exposure amount required to give a density of the minimum density +0.1 determined as 100 for Sample 1.

The IIE effect was determined by the following method. One sample was subjected to wedge exposure with white light, and the other sample was subjected to wedge exposure with green light. For each sample, the gamma value was obtained from the characteristic curve of the magenta dye obtained by color development, and the value obtained by dividing the gamma (γG) by green light by the gamma (γw) by white exposure was defined as IIE (inter-image effect).

Furthermore, each sample 1-10 and camera (Konica F
(T-1 MOTOR: manufactured by Konica Corporation) was used to photograph a color checker manufactured by Macbeth Co., Ltd., and then the above-described development processing was performed.

With respect to the obtained sample, print samples 1A to 10A were prepared by using the printer A so that the gray portion in the color checker was a gray having a reflectance of 18%.

Next, using the printer B having a different detector in the green area from the printer A, print samples 1B to 10 printed under the printing conditions performed by the printer A
B was prepared and the variation between different types of printers was visually judged.

Table 1 shows these effects.

[0091]

[Table 1]

As shown in Table 1, Comparative Sample 1 using Comparative Compound (DC) and Comparative Coupler (MA) was
The IE effect is small and the variation between printers is large. Also,
Comparative sample 2 using the comparative compound (D-C) and the coupler of the present invention showed a large IIE effect, but a decrease in sensitivity was observed.
Variation between printers is also large. Comparative Sample 3 using the DIR compound of the present invention and the coupler other than the present invention shows an increase in sensitivity and an improvement in printer-to-printer variation, but the IIE effect is small. On the other hand, Samples 4 to 10 of the present invention were all highly sensitive, had a large IIE effect, and had little variation between printers, and good results were obtained.

[0093]

According to the present invention, it is possible to provide a silver halide color photographic light-sensitive material having high sensitivity, excellent color reproducibility, and good printer-to-printer variation.

Claims (1)

[Claims] 1. A silver halide color photographic light-sensitive material having a silver halide emulsion layer comprising a blue-sensitive layer, a green-sensitive layer and a red-sensitive layer on a support, wherein at least one of the silver halide emulsion layers comprises At least one coupler represented by the following general formula [I] is contained in at least one green-sensitive silver halide emulsion layer containing at least one coupler represented by the following general formula [I]. A silver halide color photographic light-sensitive material comprising: General formula [I] A- (TIME) n-INHIBIT (In the formula, A represents a coupler residue. TIME represents a timing group, and is bonded to the coupling group of A in general formula [I] to form a color developing agent. Cleavage from the coupler by the reaction with the oxidant of, followed by sequential cleavage to finally release INHIBIT with moderate control. N is 0 or 1.) INHIBI
T is a group which becomes a development inhibitor by the above-mentioned release, and is represented by the general formula [I
a] or a triazole ring group represented by the general formula [Ib]. [Chemical 1] (In the general formulas [Ia] and [Ib], R ₁₁ is an alkylthio group, and R ₁₂ is H, an alkyl group, an alkylthio group, an aryl group or a heterocyclic group.
_At least one of ₁₁ and R ₁₂ is 2 to 3 from a triazole ring.
Group-CO that can be hydrolyzed in aqueous alkali at intervals of 4 atoms
It contains -OR ₁₃ , -O-CO-OR ₁₃ , or -CO-CO-R ₁₃ . R ₁₃ is an alkyl group, a cycloalkyl group, or an aryl group. ) [Chemical 2] (In the formula, R ¹ represents a halogen atom or an alkoxy group, R ² represents an acylamino group, a sulfonamide group, an imide group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an alkoxycarbonylamino group or an alkoxy group. It represents an integer of 0 to 4.)