JPH11140107A - Latex composition, hydrophilic colloid layer and sheet material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a latex composition useful in providing a hydrophilic colloid layer for a sheet material which hardly causes an electrostatic damage by a polymerization in the presence of a hydrophilic polymer using a polymerizable monomer containing a fluorine atom. SOLUTION: In the presence of a hydrophilic polymer (represented by formula I), preferably one having as a monomer unit vinylbenzaene sulfonic acid or a salt thereof, a polymerization is carried out using a polymerizable monomer containing a fluorine atom [for example, a compound represented by formula II (wherein (n) is 2-9), styrene and acrylic acid are polymerized]. A sheet material comprises a substrate (for example, a polyethylene terephthalate substrate) having one or more hydrophilic colloid layers on it. It is preferable that the hydrophilic colloid layer contains a solid material of a latex in an amount of 1-40 wt.% based on a hydrophilic colloid binder (for example, gelatin). The sheet material is preferably a photosensitive material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a novel latex composition, a hydrophilic colloid layer having improved antistatic properties using the same, and a sheet-like material having this layer.

[0002]

2. Description of the Related Art In general, a sheet material comprising a support having an electrical insulation property and a hydrophilic layer having a certain function is charged by contact with or peeling from the same or different substance during the production and use of the sheet material. Often. This charging phenomenon causes the sheet materials to stick to each other due to charging, deteriorating the handling properties, deteriorating the quality due to the adhesion of dust, causing a discharge phenomenon, adversely affecting the functional layer, and significantly reducing the worker. Or make you uncomfortable.

[0003] In order to eliminate these obstacles caused by static electricity,
When a conductive layer is provided on the support or a surfactant is added to the hydrophilic colloid layer, the former causes a cost increase, and the latter has a different effect depending on the contact substance or affects the functionality. There is. There is also a method of adding a conductive water-soluble polymer to the hydrophilic colloid layer, but the surface tends to be sticky and the materials are likely to stick to each other.

[0004] US Pat. No. 4,266,015 discloses a technique in which a fluoropolymer latex is added to a hydrophilic colloid layer of a silver halide photographic light-sensitive material to reduce electrostatic damage. However, according to this technique, the silver halide light-sensitive material prepared by adding the latex in the working example has a sticky surface and is likely to stick to each other. Such a problem is caused not only by the silver halide material but also by forming a functional layer by coating and drying a coating solution containing water as a solvent, a water-soluble polymer or a water-dispersible polymer as a binder material on a support. It was recognized in common.

The inventors of the present invention have intensively studied the improvement of a fluoropolymer latex in order to improve the stickiness phenomenon. As a result, it has been found that a material obtained by polymerizing a fluoromonomer in the presence of a hydrophilic polymer can reduce stickiness. Furthermore, when a latex obtained by polymerizing a fluorinated monomer in the presence of a conductive water-soluble polymer is added to a hydrophilic binder, not only the tackiness is reduced but also the electrostatic damage is significantly reduced. Invented the invention.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet-like material which is less likely to cause electrostatic damage and a new material for the sheet-like material.

[0007]

The above objects of the present invention are as follows. In the presence of a hydrophilic polymer, a latex composition characterized by being polymerized using a polymerizable monomer having a fluorine atom,

[0008] 2. The latex composition according to the above 1, wherein the hydrophilic polymer is a polymer having vinylbenzenesulfonic acid or a salt thereof as a monomer unit.

3. A hydrophilic colloid layer comprising 1 to 40% by weight of a solid of the latex composition according to the above 1 or 2 in a hydrophilic colloid binder,

[0010] 4. A sheet-like material having at least one hydrophilic colloid layer on a support, wherein the hydrophilic colloid layer contains 1 to 40% by weight of a solid content of the latex according to 1 or 2 in a hydrophilic colloid binder. A sheet-like material characterized by:

5. The above is achieved by each of the above-mentioned sheet-like materials, wherein the sheet-like material is a photographic light-sensitive material.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below. First, the hydrophilic polymer will be described. The hydrophilic polymer includes a synthetic water-soluble polymer and a natural water-soluble polymer, and any of them can be preferably used in the present invention.

Among them, synthetic water-soluble polymers include:
The molecular structure includes, for example, those having a nonionic group, those having an anionic group, and those having a nonionic group and an anionic group. Examples of the nonionic group include an ether group, an ethylene oxide group, and a hydroxy group, and examples of the anionic group include a sulfonic acid group or a salt thereof, a carboxylic acid group or a salt thereof, and a phosphoric acid group or a salt thereof. And the like.

The natural water-soluble polymers include, for example, those having a nonionic group, those having an anionic group, and those having a nonionic group and an anionic group in the molecular structure.

As the polymer having a hydrophilic group, any of a synthetic water-soluble polymer and a natural water-soluble polymer, those having an anionic group and those having a nonionic group and an anionic group can be preferably used. . In the present invention, the hydrophilic polymer may be dissolved in 0.05 g or more, preferably 0.1 g or more, in 100 g of water at 20 ° C.

Hereinafter, examples of the hydrophilic polymer will be described.

[0017]

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[0018]

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[0019]

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[0020]

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[0021]

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[0022]

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Examples of natural water-soluble polymers include gelatin, lignin, starch, pullulan, cellulose, alginic acid, dextran, dextrin, guar gum, gum arabic, glycogen, laminaran, lichenin, nigellan, and derivatives thereof. .

Examples of the derivatives of the natural water-soluble polymer include, in particular, sulfonated, carboxylated, phosphorylated, sulfoalkylated, or carboxyalkylated, alkylphosphorylated, and salts thereof, and in particular, dextran and Its derivatives are preferred. In the present invention, two or more hydrophilic polymers may be used in combination.

Examples of the polymer having vinylbenzenesulfonic acid or a salt thereof as a monomer unit are shown below.

[0026]

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[0027]

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[0028]

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Next, the polymerizable monomer having a fluorine atom will be described. Monomers that can be preferably used in the present invention are compounds represented by the following general formulas (F1) and (F2).

[0030]

Embedded image In the formula, R represents a hydrogen atom or a methyl group which may be substituted with a fluorine atom, Rf represents a linear, branched or cyclic alkyl group substituted with a fluorine atom, and the alkyl group is preferably a carbon atom The number is 1 to 10, and may be substituted with a group or atom other than a fluorine atom. Examples of these groups or atoms include a hydroxy group, a halogen atom (eg, Cl, Br, etc.). .

[0031]

Embedded image In the formula, R ¹ represents a hydrogen atom, a chlorine atom or an alkyl group having 1 to 3 carbon atoms. R ² represents a monovalent substituent, and R ² may be connected to each other to form a ring. R ^f is at least 1
Carbon atoms having 1 to 30 hydrogen atoms replaced with fluorine atoms
Represents an alkyl group, an aralkyl group, an aryl group or an alkylaryl group. X is a general formula

[0032]

Embedded image Represents a divalent linking group represented by
10 alkylene group, an arylene group or an aralkylene group,-L-represents -O- group, -S- group, -NR ³ -. Groups (here ^{R 3} represents an alkyl group having 1 to 4 carbon atoms or less The same), -CO- group, -OCO- group, -SCO- group,-
A CONR ³ — group, a —SO ₂ — group, a —NR ³ SO ₂ — group,
-SO ₂ NR ³ -group, represents a -SO- group,

[0033]

[Outside 1] Is 0 or 1. l is an integer of 0-4, preferably an integer of 0-2, m is an integer of 0-4, preferably 0 or 1, n is an integer of 1-5, especially 1 Or 2 is preferred.

Next, examples of the monomer used in the present invention will be described.

[0035]

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[0036]

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[0037]

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[0038]

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The monomer copolymerizable with the polymerizable monomer having a fluorine atom is a compound having a vinyl group, for example, acrylates such as methyl acrylate, ethyl acrylate, butyl acrylate and cyclohexyl acrylate, methyl methacrylate, Ethyl methacrylate, cyclohexyl methacrylate,
Methacrylic esters such as sulfopropyl methacrylate; vinyl esters such as vinyl acetate and vinyl propionate; vinyl ethers such as methyl vinyl ether and butyl vinyl ether; vinyl ketones such as methyl vinyl ketone and ethyl vinyl ketone; styrene, methyl styrene and chloromethyl Examples thereof include styrenes such as styrene, acrylonitrile, vinyl chloride, vinylidene chloride, butadiene, isoprene and the like. A preferred copolymerization ratio of the polymerizable monomer having a fluorine atom to the copolymerizable monomer may be 3% or more by weight, and preferably 5 to 80%.

The sheet-like material of the present invention is not particularly limited as long as it has a hydrophilic colloid layer on a support. The hydrophilic colloid layer of the present invention is a coating film using a hydrophilic colloid as a binder (binder).

The preferred content of the latex of the present invention is
It is 1 to 40% by weight as a solid content with respect to the binder.
Further, a plurality of types may be used in combination. The polymer of the present invention is suitable for a sheet-like material, particularly a silver halide photographic light-sensitive material.

[0042]

Next, examples of the synthesis of the latex composition according to the present invention and other examples of the present invention will be described. First, an example of latex production will be described. Latex Production Example 1 Distilled water 36 degassed with 1 liter Kolben with N ₂ gas
0 ml and 4.5 g of hydrophilic polymer (SP-4)
Raise the temperature to 0 ° C. To this, 0.50 g of ammonium persulfate dissolved in 5 ml of distilled water was quickly added, and a polymerizable monomer F-1 having a fluorine atom (here, n
= 4) A mixture of 50 g, 40 g of styrene and 0.5 g of acrylic acid was added dropwise in about 1 hour, and after the addition was completed, the mixture was further stirred for 3 hours. 0.2 g of ammonium persulfate was added and further cooled to room temperature to obtain the desired latex A. The average particle size of the obtained latex was about 0.2 μm.

Latex Production Examples 2 to 12 Latex Production Example 1 except that the types and amounts of the hydrophilic polymer, the fluorine-containing polymerizable monomer, and the copolymerizable monomer used were changed as shown in Table 1. Created in the same way as

[0044]

[Table 1] (Note: Use 4.5g of low molecular surfactant sodium lauryl sulfate instead)

Next, an example of manufacturing a sheet material will be described. 60 ml of water was added to 5 g of gelatin, and the solid content of the latex was 0.1%.
A latex solution was added thereto so as to be 5 g, and after heating and dissolving, polymethyl methacrylate fine particles having an average particle size of 3 μm were added.
2 g and 0.05 g of the crosslinking agent (H-1) were added thereto, and water was added to make the solution 100 ml, and the amount of gelatin was 2 g / m ^{2 on} both sides of a polyethylene terephthalate support (thickness: 100 μm). Thus, a sample which was coated and dried was prepared. Also, a sample was prepared in which the amount of latex was changed by changing the amount of latex added to the coating solution.

<Evaluation of stickiness> Five sheets of the prepared sample were cut into a size of 3 cm square and left for 1 day at 23 ° C. and 80% RH so that they did not come into contact with each other. The batten was placed on the bat and a weight of 100 g was applied thereto, and the plate was allowed to stand at 40 ° C. and 80% RH for half a day. The sample was taken out, the superposed sample was peeled off by hand, and the ease of peeling was evaluated according to the following evaluation criteria. Table 2 shows the results. 5: Slightly peeling 4: Slightly resistant 3: Slightly resistant 2: Very resistant 1: Paint film partially peeled

<Evaluation of Dust Adhesion> Five sheets of the prepared sample were cut into a 5 cm square size and left for 1 day at 23 ° C. and 20% RH so that they did not come into contact with each other. Rubbing with a nylon cloth, holding it over an ashtray containing tobacco ash, observing the state where the ash adhered, and evaluating according to the following evaluation criteria. Table 2 shows the results. 5: There is no ash at all 4: The ash is attached when you look closely 3: The ash is attached to the degree that you can easily notice 2: The ash is attached 1: The ash is attached considerably

[0048]

[Table 2]

As is clear from the above evaluation results, the latex of the present invention is a known latex (the above-mentioned latex).
Unlike this, it is hard to stick and dust is hardly attached by static electricity. Further, among the latexes of the present invention, when the hydrophilic polymer has a benzenesulfonic acid group, it has excellent antistatic properties even in a small amount. Further, a production example of a silver halide photographic light-sensitive material will be described. That is, a production example of a silver halide photographic material using the latex of the present invention will be described.

Preparation of Photosensitive Material 1 (Preparation of Emulsion Em-1) Emulsion Em-1 comprising tabular silver iodobromide grains was prepared as follows. Solution A1 Ossein gelatin 24.2g Water _{9657ml HO (CH 2 CH 2 O} ) n [CH (CH 3) CH 2 O] 17 (CH 2 CH 2 O) m H (n + m = 5~7) 10% methanol solution 1.20 ml Potassium bromide 10.8 g 10% nitric acid 160 ml B1 solution 2.5 N silver nitrate aqueous solution 2825 ml C1 solution Potassium bromide 841 g with water 2825 ml D1 solution Ossein gelatin 121 g water 2040 ml HO (CH ₂ CH ₂ O) _n [CH ( _{CH 3) CH 2 O] 17} (CH 2 CH 2 O) m H (n + m = 5~7) 10% methanol solution 5.70Ml E1 solution 1.75N potassium bromide aqueous solution following silver potential control amount

Using a mixing stirrer described in JP-B-58-58288, 475.0 ml of each of the B1 solution and the C1 solution were mixed at 35 ° C. with the A1 solution by the simultaneous mixing method (double jet method). Nucleation was performed by addition at 0 minutes. B
After the completion of the addition of Solution 1 and Solution C1, the temperature of Solution A1 is raised to 60 ° C. over 60 minutes, the entire amount of Solution D1 is added, and KOH
The pH was adjusted to 5.5 with a 3% aqueous solution, and the B1 solution and the C1 solution were again added at an addition rate of 55.4 ml / min for 42 minutes. During this time, the silver potential (measured with a silver ion selective electrode using a saturated silver-silver chloride electrode as a reference electrode) was +8 m using the E1 solution.
V and +30 mV. After the addition,
The pH was adjusted to 6.0 with a 3% aqueous solution of KOH, and immediately desalting and washing were performed to obtain a seed emulsion. Observation of this seed emulsion by an electron microscope revealed that 90% or more of the total projected area of the silver halide grains consisted of hexagonal tabular grains having a maximum adjacent side ratio of 1.0 to 2.0, and the average thickness of the hexagonal tabular grains was Is 0.090μ
m, and the average equivalent circle diameter was 0.510 μm.

The seed emulsion thus obtained was heated to 53 ° C. and the spectral sensitizing dye A (5,5′-dichloro-9-ethyl-3,3′-di- (3-sulfopropyl) oxacarbocyanine sodium salt anhydrous Substance) 450 mg, spectral sensitizing dye B # 5,5
8 mg of '-di- (butoxycarbonyl) -1,1'-di-ethyl-3,3'-di- (4-sulfobutyl) benzimidazolocarbocyanine sodium anhydride) is added as a dispersion of solid fine particles. Later, 4-hydroxy-6
-Methyl-1,3,3a, 7-tetrazaindene (TA
I) Aqueous solution containing 60 mg, adenine 15 mg, ammonium thiocyanate 50 mg, chloroauric acid 2.5 mg and sodium thiosulfate 5.0 mg, silver iodide fine grain emulsion (average particle size 0.05 μm) equivalent to 5 mmol, triphenylphosphine A dispersion of selenide (6.0 mg) was added, and aging was performed for a total of 2 hours and 30 minutes. At the end of ripening, 750 mg of TAI was added as a stabilizer.

The dispersion of the solid fine particles of the spectral sensitizing dye is as follows:
The dye was added to water at 27 ° C., and a high-speed stirrer (dissolver) was used for 3500 rpm. p. m. For 30 to 120 minutes. In addition, a dispersion of triphenylphosphine selenide was prepared by mixing 120 g of triphenylphosphine selenide with 50 g of triphenylphosphine selenide.
C. and added to 30 kg of ethyl acetate at 30.degree. C. and stirred to completely dissolve, while 3.8 kg of gelatin was dissolved in 38 kg of pure water, and sodium dodecylbenzenesulfonate was added thereto.
93 g of a 5% by weight aqueous solution was added, and these two liquids were mixed and dispersed by a high-speed stirring type disperser having a 10 cm diameter dissolver at 50 ° C. and a dispersion blade peripheral speed of 40 m / sec for 30 minutes. Until the residual concentration of ethyl acetate became 0.3% by weight or less, ethyl acetate was removed while stirring, and the resultant was diluted with pure water to obtain 80 kg.

(Preparation of Emulsion Em-2) Emulsion Em-2 consisting of tabular silver iodobromide grains was prepared using Emulsion Em-1 as a seed emulsion and the following solution. A2 liquid ossein gelatin _{19.04g HO (CH 2 CH 2 O} ) n [CH (CH 3) CH 2 O] 17 (CH 2 CH 2 O) m H (n + m = 5~7) 10% methanol solution 2. 00 ml Potassium iodide 7.00 g Em-1 1.55 mol equivalent Make up to 2800 ml with water. Solution B2 Potassium bromide 1493 g Make up to 3585 ml with water. C2 solution Silver nitrate 2131 g Make up to 3585 ml with water. Solution D2 Fine grain emulsion composed of 3% by weight of gelatin and silver iodide grains (average grain size: 0.05 μm) Equivalent to 0.028 mol

* Contains 0.06 mol of potassium iodide
To 6.64 liters of a 0% by weight aqueous gelatin solution, 7.0
Two liters of an aqueous solution containing 6 moles of silver nitrate and 7.06 moles of potassium iodide were added over 10 minutes.
During the fine particle formation, the pH was adjusted to 2.0 using nitric acid, and the temperature was adjusted to 4
It was controlled at 0 ° C. After the formation of the particles, the pH was adjusted to 6.0 using an aqueous solution of sodium carbonate.

The solution A2 was vigorously stirred in the reaction vessel while maintaining the temperature at 55 ° C., and half of each of the solution B2 and the solution C2 was added to 35 parts.
Over a period of minutes, the mixture was added by the simultaneous mixing method. During this time, the pH was 5.8
Kept. The pH was adjusted to 8.8 with a 1% aqueous KOH solution,
Solution 2, Solution C2 and Solution D2 were added by the double jet method until Solution D2 disappeared. The pH was adjusted to 6.0 with a 0.3% aqueous citric acid solution, and the remaining amounts of the B2 solution and the C2 solution were added by a simultaneous mixing method over 25 minutes. During this time, the pAg was kept at 8.9. The addition rates of the B2 liquid and the C2 liquid were changed in a function according to the critical growth rate to suppress generation of small particles and polydispersion due to Ostwald ripening. After completion of addition, desalting, washing with water and redispersion were performed in the same manner as in Em-1, and after redispersion, the pH was adjusted at 40 ° C.
Was adjusted to 5.80 and pAg to 8.2.

When the obtained silver halide emulsion was observed with an electron microscope, the average circle-equivalent diameter was 0.91 μm.
Average thickness 0.23 μm, average aspect ratio about 4.0, width of particle size distribution (standard deviation of particle size distribution / average particle size)
The emulsion was composed of 5% of tabular silver halide grains.

The resulting emulsion was heated to 47 ° C., and 390 mg of spectral sensitizing dye A and 4 mg of spectral sensitizing dye B were dispersed in the form of solid fine particles corresponding to 5 mmol of a silver iodide fine grain emulsion (average particle size: 0.05 μm). Adenine 10m
g, ammonium thiocyanate 50 mg, chloroauric acid 2.
An aqueous solution containing 0 mg and 3.3 mg of sodium thiosulfate, and a dispersion of 4.0 mg of triphenylphosphine selenide were added, and aging was performed for a total of 2 hours and 30 minutes. At the end of ripening, 750 mg of TAI was added as a stabilizer.

A sample was prepared according to the following formulation using an emulsion prepared by mixing Em-1 and Em-2 in a weight ratio of 6: 4. 175μ thick blue colored 0.15
m, on the both sides of a polyethylene terephthalate film base, in the order of a crossover cut layer, an emulsion layer, an intermediate layer and a protective layer in the order of 1.8 g / m ² of silver per one side and gelatin amount of a protective layer according to the following formula (per side). 0.4 g / m ² ,
Coating was performed so that the amount of gelatin in the intermediate layer was 0.4 g / m ² , the amount of gelatin in the emulsion layer was 1.5 g / m ² , and the amount of gelatin in the crossover cut layer was 0.2 g / m ² , and dried to prepare a sample.

First layer (crossover cut layer) Solid fine particle dispersion dye (AH) 180 mg / m ² Gelatin 0.2 g / m ² Sodium dodecylbenzenesulfonate 5 mg / m ² Compound I 5 mg / m ² Latex L 2 g / m ² 2,4-dichloro-6-hydroxy-1,3,5-triazine sodium salt 5 mg / m ² Colloidal silica (average particle size 0.014 μm) 10 mg / m ² Hardener A 2 mg / m ²

Second layer (emulsion layer) Silver halide emulsion Silver amount 1.8 g / m ² Compound G 0.5 mg / m ² 2,6-bis (hydroxyamino) -4-diethylamino-1,3,5- Triazine 5 mg / m ² t-butyl-catechol 130 mg / m ² Polyvinylpyrrolidone (molecular weight 10,000) 35 mg / m ² Styrene-maleic anhydride copolymer 80 mg / m ² Sodium polystyrene sulfonate 80 mg / m ² Trimethylolpropane 350 mg / m ² diethylene glycol 50 mg / m ² nitrophenyl-triphenyl-phosphonium chloride 20 mg / m ² ammonium 1,3-dihydroxybenzene-4-sulfonate 500 mg / m ² 2-mercaptobenzimidazole-5-sodium sulfonate 5 mg / m ² compound _{^{0.5mg / m 2 n-C 4}} H 9 OCH 2 CH (OH) CH 2 N (CH 2 COOH) 2 350mg / m 2 Compound M 5 mg / ^{m 2} Compound N 5 mg / ^{m 2} Colloidal silica 0.5 g / m ² latex L 0.2 g / m ² dextran (average molecular weight 1000) 0.2 g / m ² compound P 0.2 g / m ² compound Q 0.2 g / m ²

Third layer (intermediate layer) Gelatin 0.4 g / m ² Formaldehyde 10 mg / m ² 2,4-Dichloro-6-hydroxy-1,3,5-triazine sodium salt 5 mg / m ² Bis-vinylsulfonyl methyl ether 18 mg / m ² Latex L 0.05 g / m ² Sodium polyacrylate 10 mg / m ² Compound S-1 3 mg / m ² Compound K 5 mg / m ² Hardener B 1 mg / m ²

4th layer (protective layer) Gelatin 0.4 g / m ² Latex C of the present invention (solid content) 0.02 g / m ² Matting agent (polymethyl methacrylate having an area average particle size of 7.0 μm) 50 mg / m ² formaldehyde 10 mg / m ² 2,4-dichloro-6-hydroxy-1,3,5-triazine sodium salt 5 mg / m ² bis-vinylsulfonyl methyl ether 18 mg / m ² latex L 0.1 g / m ² polyacrylamide (Average molecular weight 10,000) 0.05 g / m ² Sodium polyacrylate 20 mg / m ² Polysiloxane SI 20 mg / m ² Compound I 12 mg / m ² Compound J 2 mg / m ² Compound S-1 14 mg / m ² Compound O 50 mg / m ² compound S-2 5 mg / ^{m 2} hardener B 1.5 mg / ^{m 2}

As shown in Table 3, No. 2 was prepared in the same manner except that the type of latex and the amount of latex added were changed. 2-2
1 was created.

[0065]

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[0066]

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[0067]

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(Evaluation method) <Static mark generation test> An unexposed photosensitive material is placed on a rubber sheet, the sample is conditioned at 23 ° C. and 20% RH, and the sample is laid with a neoprene rubber roll from above in the dark. After pressing, peeling and peeling produced a static mark, and after development, the degree of occurrence of the static mark was visually evaluated in the following five stages. Table 3 shows the results. A: No static mark is observed. B: Some static mark is generated. C: Static mark is considerably generated. D: Static mark is significantly generated. E: Static mark is generated on the entire surface.

<Evaluation of Dust Adhesion> The prepared samples were cut into a size of 5 cm square and left for 1 day at 23 ° C. and 20% RH so that they did not come into contact with each other. It was rubbed with a cloth and held over an ashtray containing cigarette ash to observe the state of ash adhesion. Table 3 shows the results. 5: Not at all 4: Looking closely 3: On but easily noticed 2: On 1: Very on

[0070]

[Table 3]

As is clear from the above evaluation results, the latex of the present invention is a known latex (the above-mentioned latex).
Unlike this, static marks are not easily generated, and dust is hardly attached by static electricity. In addition, among the latexes of the present invention, when the hydrophilic polymer has a benzenesulfonic acid group, the hydrophilic polymer has excellent antistatic properties even in a small amount.

[0072]

According to the present invention, it is possible to provide a sheet-like material which does not easily cause an electrostatic damage and a novel material for the sheet-like material.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Takayuki Sasaki 1 Sakuracho, Hino-shi, Tokyo Konica Corporation (72) Inventor Chiaki Nagaike 1 Sakuracho, Hino-shi, Tokyo Konica Corporation (72) Invention Ikuo Kurachi 1 Sakuracho, Hino-shi, Tokyo Konica Corporation (72) Inventor Masahiko Hatazaki 6909-9, Ono, Asaba-cho, Iwata-gun, Shizuoka Prefecture Konica Chemical Shizuoka Works

Claims (5)

[Claims] 1. A latex composition characterized by being polymerized using a polymerizable monomer having a fluorine atom in the presence of a hydrophilic polymer. 2. The latex composition according to claim 1, wherein the hydrophilic polymer is a polymer having vinylbenzenesulfonic acid or a salt thereof as a monomer unit. 3. A hydrophilic colloid layer comprising a hydrophilic colloid binder containing 1 to 40% by weight of a solid of the latex composition according to claim 1 or 2. 4. A sheet-like material having at least one hydrophilic colloid layer on a support, wherein the solid content of the latex according to claim 1 or 2 is contained in the hydrophilic colloid layer in the hydrophilic colloid layer. A sheet material characterized by containing 1 to 40% by weight. 5. The sheet material according to claim 4, wherein the sheet material is a photographic material.