JPH09111128A - Antistatic plastic film material and silver halide photographic material prepared by using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a transparent plastic film material freed from the problems of transparency, the stability of a coating fluid, workability, etc., and having high antistatic performances even at a low humidity and to obtain a silver halide photographic material by using the same as a support. SOLUTION: This film material has at least one conductivity layer and the absolute value of the impedance of the material at a frequency of 20Hz is 4×10<5> Ω or above. The at least one conductive layer contains a polymer binder, 1-50vol.%, based on the conductive layer, conductor particles and/or semiconductor particles, and 0.0001-10vol.% organic compound having a Tg or a melting point of 50 deg.C or below.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic film having an antistatic property improved so as to reduce the influence of humidity change, such as a magnetic tape, a floppy disk, a flexible substrate, a membrane switch substrate, and a printer recording paper. The present invention relates to a plastic film material that can be used for, for example, a film that does not impair transparency, and thus can be used for OHP films, liquid crystal display devices, touch panels, stained glass, and other applications. Further, since its excellent transparency is good without adversely affecting photographic characteristics, it can be used for photographic light-sensitive materials. In particular, in the case of a photographic light-sensitive material, due to its excellent characteristics, it is possible to use not only the silver salt that has been used conventionally but also a field using a light-sensitive material other than a silver salt.

[0002]

2. Description of the Related Art Generally, a plastic film has a strong electrostatic property, and is often restricted in use except for the use of its physical properties, or its properties are an obstacle. For example, in a photographic light-sensitive material, an electrically insulating plastic film is generally used as a transparent support, and a photographic light-sensitive layer is coated on this support to form a so-called composite material.

During the manufacturing process of a photographic light-sensitive material and during its use, it is liable to be charged upon contact friction or peeling from the surface of the same kind or different kinds of materials. The electrostatic charge accumulated by charging causes many obstacles. The most serious obstacle is to expose the photosensitive emulsion layer by discharging the electrostatic charge accumulated before the development process, and when the photographic film is processed for development, a so-called spot-like spot called a static mark. Or, it is a dendritic or feather-like streak. For example, when this phenomenon appears in a medical or industrial X-ray film or the like, it may lead to a very dangerous judgment such as erroneous diagnosis. This phenomenon becomes apparent only after development, and is one of the very troublesome problems.

Further, these accumulated electrostatic charges may cause a failure such as dust adhering to the film surface or inability of uniform coating on the film surface.

A large number of such electrifications occur other than those mentioned above. For example, it is caused by contact friction between a photographic film and a roller in the manufacturing process, or winding of the photographic film, separation of the support surface from the emulsion surface during the rewinding process, and the like. In the case of finished products, the photographic film is wound and the base surface and emulsion surface are separated when switching is performed, or contact is made between the mechanical part during X-ray film automatic photography or the fluorescent intensifying screen. It is caused by separation etc. It also occurs when it comes into contact with other packaging materials.

The static marks of the photographic light-sensitive material, which are induced by the accumulation of such electrostatic charges, become more remarkable as the sensitivity of the photographic light-sensitive material increases and the processing speed increases.
Particularly in recent years, the development of photographic light-sensitive materials and the increased chances of severe handling due to high-speed coating, high-speed photography, high-speed automatic processing, etc. have made it easier to generate static marks.

Further, the adhesion of dusts after the development process has become a big problem in recent years, and improvement for keeping the antistatic property after the development process is required.

The best way to eliminate these static disturbances is to increase the electrical conductivity of the material so that the electrostatic charge can be dissipated in a short time before the stored charge is discharged.

Therefore, conventionally, a method of improving the conductivity of a support of a photographic light-sensitive material or various coated surface layers has been considered, and various hygroscopic substances, water-soluble inorganic salts, certain surfactants,
Attempts have been made to use polymers and the like.

For example, JP-A-49-91165 and 49-121523 disclose examples of applying an ionic polymer having a dissociative group in the polymer main chain.
In addition, JP-A-2-9689 and JP-A-2-182491
Conductive polymers as described in Japanese Patent Application Laid-Open No. Sho 63-63
There are known inventions relating to surfactants such as those described in JP-A-55541, JP-A-63-148254, JP-A-63-148256 and JP-A-1-314191.

However, many of these materials show specificity depending on the type of film support and photographic composition, and give good results for certain film supports and photographic emulsions and other photographic components. , Other different film supports and photographic components not only have no antistatic effect, but can also adversely affect photographic properties. More importantly, many of these materials lose their function as conductive layers under low humidity.

For the purpose of improving the performance deterioration under low humidity, Japanese Patent Publication No. 35-6616 and Japanese Patent Publication No. 1-20735 disclose a technique of using a metal oxide as an antistatic treatment agent. The former technique discloses a method using a colloidal sol dispersion, and the latter technique uses a highly crystalline metal oxide powder treated at high temperature for the purpose of improving the conductivity problem of the former. The method of use has been disclosed.

However, since the latter technique uses powder having high crystallinity, it is necessary to consider the particle size and the particle / binder ratio for light scattering. Further, in JP-A-4-29134, in order to improve not only performance under low humidity but also other defects,
Although a method of using a particulate metal oxide and a fibrous metal oxide as a conductive material used for a photographic light-sensitive material is disclosed, the problem of the amount added remains.

[0014]

As described above, although efforts have been made for many years to overcome the obstacles of plastic films due to static electricity, the relationship between their generation mechanism and materials is still unknown. Especially in the field of photography where obstacles have a fatal effect on merchandise, the application of highly conductive materials, such as conductive metal oxide particles, has been the best choice. However, with regard to a photographic light-sensitive material provided with a layer containing conductive metal oxide particles, since the publication of Japanese Examined Patent Publication No. 35-6616, as a means for improving the performance deterioration under low humidity, it has been used for a long time of 30 years or more. Despite being studied for many years, it still has many unsolved problems.

For example, when a layer containing such conductive metal oxide particles is provided in contact with silver halide, pressure fog or scratches are likely to occur on an image due to friction during handling, or When mixed with a binder, the fine particles existing on the surface may fall off due to friction during the manufacturing process or handling.
In the manufacturing process, there is a problem that the product adhered to the roller and the conveyed product is damaged. Furthermore, materials containing these metal elements as the main components generally have high specific gravity, and when applied to a photographic light-sensitive material, there is a problem such as the precipitation of fine particles, which causes problems in the uniformity of the coating solution, storage stability, etc. Was there.

Most of these problems can be solved by atomizing the particles, but atomization causes the following new problems. That is, a thickening phenomenon of the coating liquid due to atomization, a workability problem resulting from the phenomenon, and a problem of sedimentation of agglomerated particles due to an increase in cohesive force occur.

One means for solving the problem of thickening the coating solution can be solved by reducing the addition amount of particles. The problem of sedimentation of agglomerated particles can be ameliorated by lowering the concentration, that is, reducing the amount of conductive particles added.

Therefore, an object of the present invention is to have a high antistatic property even in a low humidity in a region where the amount of addition is relatively small, and the transparency, the stability of the coating solution, and the workability which are caused by the large amount of the addition. It is an object of the present invention to provide a transparent plastic film material or a silver halide photographic light-sensitive material having an antistatic layer, which solves the above problems. The present invention is particularly effective for improving transparency, but the effects of the present invention can be applied to other than transparent films.

[0019]

The above object of the present invention is a film material having at least one conductive layer, wherein the film material has an absolute impedance value at a frequency of 20 Hz of 4 × 10 ⁵ Ω or more. And in at least one of the conductive layers, a polymer binder and conductive particles and / or semiconductor particles are added in an amount of 1 vo of the conductive layer.
1% or more and 50 vol% or less, Tg or melting point of 50
0.0001 vol% or more and 10v of an organic compound having a temperature of ℃ or less
was achieved by a plastic film material characterized by containing less than or equal to ol%.

The present invention will be described in detail below.

A film material having at least one conductive layer, which is placed between two electrodes composed of parallel planes, with the surface having a low surface resistivity facing upward, and an AC voltage is applied. Frequency 2 measured by the void method while applying
The absolute value of impedance at 0Hz is 4 × 10 ⁵ Ω
Above, and in at least one conductive layer of the material, a polymer binder, a conductor and / or semiconductor particles, and an organic compound having a Tg or melting point of 50 ° C. or less, 1vo particle
1% or more and 50 vol% or less, Tg or melting point of 50
0.0001 vol% or more and 10v of an organic compound having a temperature of ℃ or less
was achieved by an antistatic plastic film material characterized by containing less than or equal to ol%.

The vol% in the present invention was determined using the value of specific gravity described in publicly known materials such as the Handbook of Chemistry. Regarding the specific gravities of materials not described in known materials, the values shown by the same chemical formula or composition formula were used.

For example, the specific gravity of tin oxide contained in the tin oxide sol is replaced by the specific gravity of SnO ₂ . In the present invention, 7 was used.

According to the present invention, it can be used for magnetic tapes, floppy disks, flexible substrates, base materials for membrane switches, printer recording papers, etc. in addition to photographic light-sensitive materials, and it is possible to provide a film which does not particularly impair transparency. It can be used for antistatic of various films including applications for OHP films, liquid crystal display devices, touch panels, stained glass and the like.

As is known, the conductivity of the material depends on the cation,
It is expressed by anions or charge carriers existing in the particles such as electrons and holes.

When the main charge carrier is an ion, it becomes a solid electrolyte, and when the charge carrier is an electron, it becomes a semiconductor. An ordinary conductive material is a conductor in which both are mixed, and a nonstoichiometric compound such as an oxygen-deficient oxide, a metal-excess oxide, a metal-deficient oxide, or an oxygen-excess oxide becomes a semiconductor. The conductivity of many conductive materials is exerted in this way, and a method of dispersing fine particles composed of a conductor or a semiconductor material in an insulating polymer and imparting conductivity to the polymer to prevent electrification is Well studied. The inventors investigated various combinations of polymers and conductors or semiconductor particles, and found conditions satisfying both transparency and conductivity.

Further, when the conductivity is examined in detail, in general, if the conductivity of the material increases as shown in the following known formula, the impedance Z including the term of resistance is obtained.
It is well known that the absolute value of decreases.

[0028]

(Equation 1)

However, R: resistance, C: capacitance, ω: 2π
f, f: represents frequency.

However, under a special condition where the amount of the conductive particles added to the organic substance which is the binder component is reduced, that is, when the absolute value of the impedance at a frequency of 20 Hz is 4 × 10 ⁵ Ω or more, a film such as dust adhesion is formed. It has been found that the problems caused by the charging of are solved.

For example, when the transparent film is coated with an excessive amount of conductive particles to the extent that the transparency of the film is impaired in order to prevent electrification, the conductivity of the film surface is improved and the surface ratio measured using a direct current is used. The resistance is sufficiently low, and at the same time, the absolute value of the impedance measured by alternating current is also low. Such a film material does not cause electrostatic damage, but defeats the purpose of the present invention because it significantly impairs transparency. When priority is given to transparency and the amount of conductive particles added is reduced, the surface resistivity increases and the absolute value of impedance also increases. However, problems such as adhesion of dust and the like occur due to static electricity, and transparency is improved but antistatic performance is deteriorated.

As is apparent, if the surface resistivity is reduced,
That is, if the absolute value of impedance is lowered, antistatic performance is improved. Although the antistatic technology up to now has been continuously developed based on such a concept, the present invention does not sacrifice transparency, but uses a special combination of an absolute value of impedance and a composition to generate static electricity. Overcoming obstacles.

That is, in order to satisfy the transparency, it is necessary to reduce the addition amount of the fine particles, but if the addition amount of the fine particles is reduced, it is difficult to improve the surface resistivity as described above. However, the inventors diligently studied the relationship between the antistatic performance and the impedance, and set the absolute value of the impedance to be larger than 4 × 10 ⁵ Ω in a region where a small amount of conductive particles that does not affect the transparency is added. It has been discovered that this makes it possible to prevent static electricity. To raise the absolute value of impedance, it is not necessary to increase the amount of conductive particles added, it becomes possible to control with an organic substance that has no conductivity but can improve various physical properties of the film,
It has been discovered that it is a new means of achieving antistatic properties while being limited by transparency.

As described above, in the added region where the amount of conductive particles is small enough not to affect the transparency, the absolute value of the impedance at a frequency of 20 Hz is controlled by an organic substance having a small optical effect so that the transparency and the charging can be improved. Thinking that a film that satisfies both of the prevention can be completed, the condition of the absolute value of the impedance that the film material should satisfy, and the clarification of the addition amount of the conductive particles that does not affect the transparency,
Efforts have been made to clarify the composition of the binder within that range, and the present invention has been completed.

The present invention will be described in more detail below.

Regarding the impedance measurement of the film material in the present invention, a general impedance measuring device used for measuring the dielectric constant of electronic parts can be used.
Preferably, the impedance measuring device capable of measuring a frequency of 1 Hz or higher is combined with a film measuring electrode. For example, Yokogawa Hewlett-Packard (hereinafter YHP) Precision LCR meter HP
This is a combination of 4284A and HP16451B. When using another device, it is necessary to correct the electrode portion. In order to achieve the present invention, it is necessary to measure the impedance of the film material correctly, so that a desirable result cannot be obtained when an uncorrectable device is used. An example of obtaining the absolute value of the impedance at 20 Hz with this combination of devices will be described in detail, but the present invention does not limit the measuring method as long as the accurate absolute value of the impedance at the frequency of 20 Hz of the film material can be measured.

Using a precision LCR meter HP4284A connected to HP16451B having two electrodes constituted by parallel planes and a guard electrode, 23 ° C., 20% R
The absolute value of the impedance of the film material is measured by the void method in an H atmosphere. Regarding the measurement of the void method, H
Follow the electrode non-contact method described in the instruction manual of P16451B. The size of the sample is not particularly limited as long as it is larger than the electrode plane, but the diameter of the main electrode is 3.
In the case of 8 cm, the size is 6 cm x 6 cm to 5 cm x
A 5 cm square sample is preferred. If the magnitude of the surface resistivity measured using the direct current of the sample is equal on the front and back sides, either side may be placed on the upper side, but if they are not the same on the front and back sides, the side with the lower surface resistivity is placed on the upper side. Towards
A sample is placed between two electrodes composed of parallel planes, and measurement is performed by the void method while applying an AC voltage.

The preferred range of the measured impedance is 4 × 10 ⁵ Ω or more, preferably 8 × 10 ⁵ Ω or more, more preferably the absolute value of the impedance at a frequency of 20 Hz measured using an electrode having an area of 11 to 12 cm ^2. 1 x 10 ⁶
Within the range of Ω or more and 10 ²⁰ Ω or less, the following composition range makes it possible to produce a film material having both antistatic performance and transparency.

Regarding the amount of conductive particles added, the preferable range of the amount added changes depending on the type of particles such as the color, morphology and composition of the conductive particles, but considering transparency, per unit volume of the antistatic layer. Content is 50 vol% or less, preferably 40 vol% or less, more preferably 37 vol%
The following is good. 28 vol% if the transparency conditions are strictly selected
The following is more preferable, and 20 vol% or less is preferable. The minimum required amount of conductive particles is selected from the conditions that the absolute value of impedance falls within the preferable range described above.
When this condition is emphasized, the conductive particles need to be 1 vol% or more, preferably 5 vol% or more, and more preferably 10 vol% or more.

On the other hand, regarding an organic compound having a Tg or melting point of 50 ° C. or less, the effect of preventing cracks and the like can be expected by adding it to the antistatic layer, and it is preferable to add a large amount, but if too much is added. Impedance decreases, which is not preferable. For these reasons,
The addition amount is determined from the absolute value of impedance, but the preferable addition amount is 0.0001 vo with respect to the antistatic layer.
1% or more and 10 vol% or less, preferably 0.00
The content is 01 vol% or more and 8 vol% or less, and more preferably 0.0001 vol% or more and 5 vol% or less.

Conductive particles and Tg or melting point of 50 ° C.
The antistatic layer of the present invention is composed of three components of the following organic compound and a polymer binder as basic components, and the absolute value of impedance is controlled. However, if necessary, a crosslinking agent within the scope of the present invention is used. Other components such as a surfactant and a matting material may be added. However, the addition of these other components leading to a decrease in the absolute value of impedance, that is, the addition beyond the range of the present invention, is not preferable because the purpose of the present invention cannot be achieved.

As the conductive particles to be added, any material such as an organic material, an inorganic material or a composite material thereof may be used. That is, the main component of the conductive particles is 10 in volume resistivity.
The material is ⁹ Ωcm or less and 10 ⁻⁵ Ωcm or more, and may be composed of the same material or may be a combination of different materials. White or colorless metal oxide particles are preferable, and since conductivity of such particles tends to be low, a material of 10 ⁹ Ωcm or less and 10 ⁻¹ Ωcm or more is selected.

Amorphous metal oxide sols are preferred for use in photographic light-sensitive materials for which transparency is desired, and 10 ⁸ Ωcm is preferred.
Hereafter, a material of 10 ¹ Ωcm or more is selected. The particle size of these particles is not particularly limited, but in the image taken by an electron microscope, the smaller diameter is preferably 10 μm or less, and more preferably 1 μm or less.
When transparency is required, it is preferably 0.5 μm or less, and most preferably 0.001 μm or more and 0.5 μm or less in the form of an amorphous metal oxide sol.

Regarding the value of the volume resistivity, a value obtained by dividing the volume resistivity of the molded body obtained by applying a constant pressure to the powder by 10 ² is adopted. The constant pressure is not particularly limited, but preferably a pressure of 10 kg / cm ² or more, more preferably 100 kg / cm ² or more and 10 t.
The value obtained by dividing the volume resistivity of the material formed by applying a pressure of less than / cm ² by 10 ² is adopted. In general, regarding the pressure applied to the powder and the volume resistivity of the compact, the higher the pressure, the lower the volume resistivity tends to be. However, even when an isostatic pressure of 3 t / cm ² is applied by a hydrostatic pressure device, a value lower than the volume specific resistance value obtained with a single crystal cannot be obtained, and the value is about 100 times higher. Therefore, a value obtained by dividing the volume specific resistance of a molded body obtained by applying a constant pressure in a powder state by 10 ² is adopted.

In general, a semiconductor means a material having a volume resistivity of 10 Ωcm or more and less than 10 ¹² Ωcm, and a conductor means
A material of less than 10 Ωcm. In the present invention, both semiconductor and conductor are referred to as conductive particles.

The structure of the conductive particles may be crystalline or amorphous, and even if the higher-order structure has a graded composition, it has a regular composition distribution or a non-uniform distribution. However, anything is acceptable as long as the configuration and object of the present invention are achieved.

Examples of the organic material include conjugated polymers such as tetracyanoquinodimethane (TCNQ), tetrathiofulvalene, polyacetylene (TTF), corterylene, polyparaphenylene, polythiophene, polypyrrole, polyaniline, and the like. It is also possible to use a polymer doped with a suitable doping agent, or a compound composed of an ion conductive polymer such as polyvinylbenzenesulfonates, polyvinylbenzyltrimethylammonium chloride, and quaternary salt polymers.

Further, fine particles obtained by dispersing a carbon material in an organic polymer and curing it can also be used. The carbon material is a material produced by a carbonization process using an organic compound as a starting material, and examples thereof include coke, carbon fiber, glassy carbon, pyrolytic carbon, whiskers, and carbon black.

Particles in the boundary region between organic and inorganic materials can be used as long as they have conductivity. For example, a phosphazene derivative having a P = N skeleton and a material having a conductivity of 10 ⁹ Ωcm or less is preferable. .

Examples of the inorganic material include metal, chalcogenite glass having conductivity, particles of metal oxide, and the like, and the metal oxide is preferable from the viewpoint of chemical stability. Any conductive inorganic material may be used as long as it can be achieved. When a metal oxide is used, the synthesis method may be any known method that can achieve the object of the present invention. Examples thereof include a method for producing fine particles and ultrafine particles such as a coprecipitation method using a metal or a compound containing a metal as a raw material, a multistage wet method, a sol-gel method, an atomizing method, and a plasma pyrolysis method. Here, the metal or the compound containing the metal means Li, Na, K, Rb, Cs, Be, depending on the powder synthesis method.
Mg, Ca, Sr, Ba, Sc, Y, La, Ce, T
i, Zr, V, Nb, Cr, Mo, W, Mn, Fe, C
o, Ni, Ru, Rh, Pd, Os, Ir, Pt, C
u, Ag, Au, Zn, Cd, Hg, Al, Ga, I
n, Tl, Si, Ge, Sn, Pb, As, Sb, B
A compound containing i, Se, Te, Po elements, preferably Ni, Ir, Rh, Nb, Ce, Zr, Th, H
f, Zn, Ti, Sn, Al, In, Si, Mg, B
It is a compound containing a, Mo, W, and V as main components. Preferably, it is a water-soluble compound or a compound soluble in an organic solvent, for example, water-soluble metal salts such as FeSO ₄ .7H ₂ O and CuSO ₄ , metal compounds soluble in an organic solvent such as NiCl ₂ and PdCl ₂ , Ti ( Metal alkoxides such as OC ₃ H ₇ ) ₄ and organometallic compounds such as ferrocene are selected.
Depending on the powder synthesizing method, a material that is solid at room temperature and contains a metal or a compound containing a metal as a main component can also be used in combination, and it does not particularly limit the powder raw material and the manufacturing method. Any raw material and manufacturing method that achieve the purpose may be used.

The composition and crystal form of the metal oxide particles obtained by these production methods may be any composition and crystal form, whether amorphous or crystalline, as long as the object of the present invention can be achieved.

For example, simple cubic lattice, body centered cubic lattice, face centered cubic lattice, simple square lattice, body centered square lattice, simple orthorhombic lattice, bottom centered orthorhombic lattice, body centered orthorhombic lattice, face centered orthorhombic lattice. , Simple monoclinic lattice, bottom center monoclinic lattice, triclinic lattice, rhombohedral lattice,
A compound having a specific structure such as a hexagonal lattice is included.

In the present invention, the crystalline porous material is also
It can be used.

In addition to these specific crystalline compounds, powders which do not give sharp diffraction peaks when evaluated by powder X-ray diffractometry may be used. If the composition originally takes a specific crystal form, or most of the diffraction peak values can be identified in a specific crystal, but it is unclear due to the widening of a part, or Amorphous powders that are all broadened can also be used if the object of the present invention can be achieved. Examples of such metal oxides include colloidal SnO ₂ sols. This compound is suitable for achieving the object of the present invention without causing problems such as precipitation. Regarding the method for producing the SnO ₂ ultrafine particles, the temperature condition is particularly important, and the method involving the high temperature heat treatment is not preferable because it causes the growth of primary particles and the phenomenon that the crystallinity becomes high, and it is necessary to perform the heat treatment unavoidably. When there is
It should be kept at 400 ° C. or lower, preferably 300 ° C. or lower, more preferably 200 ° C. or lower, still more preferably 150 ° C. or lower. The SnO ₂ sol prepared by the method described in JP-B No. 35-6616 is an example suitable for the present invention. Further, a material doped with a different element such as fluorine or Sb according to the method described in JP-B-35-6616 is also suitable.

The organic compound having a Tg or melting point of 50 ° C. or lower is a material selected from the categories of monomers, oligomers and polymers within the scope of achieving the object of the present invention and is not particularly limited, but ethylene glycol is preferable. Polyether compounds such as propylene glycol, 1,1,1-trimethylolpropane, polyethylene glycol and polypropylene glycol, acrylic compounds such as butyl polyacrylate and polyacrylamide, polyvinyl alcohol and polyester compounds are preferable. The addition method may be added when mixing the components described in the present invention, or in the case of dispersing the components described in the present invention in water or an organic solvent, in a dispersion medium such as water or an organic solvent in advance. After dispersion, a solvent in which other components described in the present invention are dispersed may be added, and no particular limitation is imposed.

The binder used in the present invention is not particularly limited as long as it has a film-forming ability. For example, proteins such as gelatin and casein, carboxymethyl cellulose, hydroxyethyl cellulose,
Cellulose compounds such as acetyl cellulose, diacetyl cellulose, triacetyl cellulose, dextran,
Agar, sodium alginate, sugars such as starch derivatives, polyvinyl alcohol, polyvinyl acetate, polyacrylic acid ester, polymethacrylic acid ester, polystyrene,
Examples thereof include synthetic polymers such as polyacrylamide, poly-N-vinylpyrrolidone, polyester, polyvinyl chloride, and polyacrylic acid. In particular, gelatin (lime-processed gelatin, acid-processed gelatin, enzyme-degraded gelatin, phthalated gelatin, acetylated gelatin, etc.), acetyl cellulose, diacetyl cellulose, triacetyl cellulose, polyvinyl acetate, polyvinyl alcohol, butyl polyacrylate, polyacrylamide. , Dextran,
A water-soluble polyester resin or the like is preferable.

The conductor and semi-conductor particles of the present invention are used by being dispersed or dissolved in a binder. Alternatively, the metal oxide particles are subjected to a treatment such as surface treatment or microencapsulation with a conductive polymer compound, after mixing the metal oxide particles in a solvent in which the conductive polymer compound is dissolved or dispersed, It is also possible to disperse a powder that has been subjected to a treatment such as a spray drying method or a freeze drying method in a binder and apply it.

A method of dispersing a conductor or semiconductor particles in a polymer binder of the present invention and an organic compound having a Tg or a melting point of 50 ° C. or lower, which is a method utilizing free rotation motion, a container provided with a baffle plate. Using the obstacle movement in the inside, using the falling motion that rotates the closed container around the horizontal axis, using the shaking motion that shakes the container up and down, using shearing force on the roll, etc. There are various methods, but any method may be selected as long as the object of the present invention is not impaired.

Examples of the plastic film material used in the present invention include cellulose nitrate film, cellulose acetate film, cellulose acetate butyrate film, cellulose acetate propionate film, polystyrene film, polyethylene terephthalate film, polycarbonate film and others. There is a laminated product, etc. Of these film materials, it is also possible to select polymer polymerization conditions and use highly stereoregular polymers. For example,
You may use the plastic film which has a syndiotactic polystyrene (SPS) as a main component. The effect of the present invention is more effective in a film that is particularly easily charged, such as an SPS film.

In the present invention, the film containing syndiotactic polystyrene as a main component means that the stereoregular structure (tacticity) is mainly a syndiotactic structure.
That is, a phenyl group or a substituted phenyl group, which is a side chain with respect to the main chain formed from a carbon-carbon bond, has a three-dimensional structure alternately located in opposite directions, and the main chain of the main chain is a racemo chain. A styrenic polymer or
A composition containing it, which is a styrene homopolymer, can be polymerized by the method described in JP-A No. 62-117708, and the polymer is described in JP-A No. 1-46912, It can be obtained by polymerization according to the method described in JP-A-1-178505.

The tacticity is quantified by a nuclear magnetic resonance method ( ¹³ C-NMR method) using isotope carbon. ¹³ C-
The tacticity measured by the NMR method can be indicated by the abundance ratio of a plurality of continuous constitutional units, for example, diad in the case of 2, triad in the case of 3, and pentad in the case of 5. The styrene-based polymer having a predominantly syndiotactic structure as used in the present invention is usually 75% or more in terms of racemic dyad, preferably 8%.
It is suitable that it is 5% or more, or 60% or more of racemic triad, preferably 75% or more, or 30% or more of racemic pentad, preferably 50% or more.

Specific monomers of the polymer constituting the syndiotactic polystyrene composition include alkylstyrene such as styrene and methylstyrene, halogenated (alkyl) styrene such as chloromethylstyrene and chlorostyrene, alkoxystyrene, and the like. A single or a mixture containing vinyl benzoate as a main component. In particular, a copolymer of alkyl styrene and styrene has a
This is a preferable combination for obtaining a film having a thickness of at least m.

The polystyrene resin having a syndiotactic structure of the present invention is (a) (a) a transition metal described on page 4-10 of JP-A-5-320448 as a catalyst for polymerization using the above raw material monomers. Compounds and (b) containing aluminoxane as a main component, or (b) (a)
It can be produced by polymerization using a compound containing, as a main component, a transition metal compound and a compound capable of reacting with the transition metal compound (c) to form an ionic complex.

These plastic film materials can be used as a support for a photographic light-sensitive material. Further, the transparent support is not limited to a colorless and transparent one, but it can be colored and transparent by adding a dye or a pigment.

As the light-sensitive material according to the present invention, an ordinary black-and-white silver halide light-sensitive material (for example, a black-and-white light-sensitive material for photographing,
Ordinary multilayer color light-sensitive materials (for example, color reversal film, color negative film, color positive film, etc.), transfer image forming materials (for example, proof printing for printing) such as X-ray black-and-white light-sensitive material, printing black-and-white light-sensitive material, etc. Various light-sensitive materials such as color proof) can be mentioned.

[0066]

EXAMPLES The present invention will now be described in more detail by way of examples, which should not be construed as limiting the present invention.

(Dispersion of conductive particles P1) (NP (NH
C ₆ H ₅ ) _1.6 (NHC ₆ H ₄ SO ₃ H) _0.4 ) n: (n = 5
A 10% solution of 1,1,2,2-tetrachloroethane of 45) is spray-dried by a spray drying method and recovered as a powder. The obtained powder had an average particle diameter of 0.15 μm, a specific gravity of 1.25, and a volume resistivity of 2.3 × 10 ⁴ Ωcm.

This conductive powder was dispersed in water so that the concentration was 8 wt%.

(Dispersion of Conductive Particles P2) 65 g of stannic chloride hydrate was dissolved in 2000 cc of an aqueous solution to obtain a uniform solution. Then, this was boiled to obtain a coprecipitate. The resulting precipitate is removed by decantation, and the precipitate is washed with distilled water many times. Silver nitrate is dropped into distilled water from which the precipitate has been washed to confirm that there is no reaction of chloride ions. This precipitate is added and dispersed in 1000 cc of distilled water, and the total amount is made 2000 cc. 4% of 30% ammonia water
Add 0 cc and heat in a water bath to form a SnO ₂ sol solution.

When it is used as a coating liquid, it is concentrated to a concentration of about 8% while blowing ammonia into this sol solution. Regarding the volume resistivity of the particles contained in this sol solution, a thin film was formed on silica glass using the sol solution, and the value measured by the four probe method was defined as the volume resistivity of the particles. The measured volume resistivity is 3.4 × 10 ^4.
Ωcm.

(Conductive Particle P3 Dispersion) An aqueous solution of 65 g of stannic chloride hydrate and 1.0 g of antimony trichloride in 200 aqueous solution.
It was dissolved in 0 cc to obtain a uniform solution. Then, this was boiled to obtain a coprecipitate. The resulting precipitate is removed by decantation, and the precipitate is washed with distilled water many times. Silver nitrate is dropped into distilled water from which the precipitate has been washed to confirm that there is no reaction of chloride ions. 1000cc of distilled water
After adding and dispersing in it, the total amount is 2000 cc. When 40 cc of 30% ammonia water is further added and heated in a water bath, a SnO ₂ sol solution is generated.

This sol solution was sprayed into an electric furnace heated to 400 ° C. to synthesize a conductive powder. After molding the obtained powder with a tablet molding machine, the volume resistivity measured by the four-terminal method was 1.5 × 10 ¹ Ωcm.

This conductive powder was dispersed in ammonia water having a pH of 10 so as to have a concentration of 8 wt%.

(Conductive Particle P4 Dispersion) Particles in which the surface of potassium titanate is coated with conductive tin oxide (Otsuka Chemical Co., Ltd.)
DENTALL manufactured by K.K. was dispersed in ammonia water having a pH of 10 to have a concentration of 8 wt%.

(Example 1) (Preparation of support for silver halide photographic light-sensitive material) Biaxially stretched and heat-fixed polyethylene terephthalate film having a thickness of 100 μm was subjected to corona discharge treatment of 8 W min / m ² on both sides. As described in JP-A-59-19941, an undercoating coating solution B-1 described below was applied as an undercoating layer B-1 to a dry film thickness of 0.8 μm and dried at 100 ° C. for 1 minute. . On the surface of the polyethylene terephthalate film opposite to the subbing layer B-1, there is disclosed in JP-A-59-77439.
The following subbing coating liquid B-2-1 was applied as the subbing layer B-2 as described in No. 1, and dried at 110 ° C. for 1 minute.

* Undercoating 1st layer <Undercoating liquid B-1> Copolymer of 30% by weight of butyl acrylate, 20% by weight of t-butyl acrylate, 25% by weight of styrene and 25% by weight of 2-hydroxyethyl acrylate Latex liquid (solid content 30%) 270 g Compound A 0.6 g Hexamethylene-1,6-bis (ethylene urea) 0.8 g Water is made up to 1 liter.

<Undercoating Coating Liquid B-2-1> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glycidyl acrylate 23 g Conductive P2 dispersion Liquid 415 g Polyethylene glycol (molecular weight 600) 0.00012 g Water 568 g * Undercoating second layer Further, a corona discharge of 8 W min / m ² was applied on the undercoating layers B-1 and B-2-1, and the following coating solution was applied. B-3 was applied to a dry film thickness of 0.1 μm and dried at 100 ° C. for 1 minute.

<Undercoating Coating Liquid B-3> Gelatin 10 g Compound A 0.4 g Compound B 0.1 g Silica particles having an average particle size of 3 μm 0.1 g Water to make 1 liter.

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(Emulsion preparation) Grains containing 10 ^-5 mol of rhodium per 1 mol of silver were prepared by the control double jet method under an acidic atmosphere of pH 3.0. The particles were grown in a system containing 30 mg of benzyladenine per liter of a 1% aqueous gelatin solution. After mixing silver and halide 6-methyl-4-hydroxy-1,3,3a, 7-
Tetrazaindene 600m per mol of silver halide
g, then washed with water and desalted.

Next, 60 m per mol of silver halide
g of 6-methyl-4-hydroxy-1,3,3a, 7-
After the addition of tetrazaindene, sulfur sensitization was performed. 6-methyl-4-hydroxy- as a stabilizer after sulfur sensitization
1,3,3a, 7-Tetrazaindene was added.

(Silver Halide Emulsion Layer) Additives were prepared and added to the above emulsions in the amounts shown below, and coated on the support.

Latex polymer: Styrene-butyl acrylate-acrylic acid terpolymer Copolymer 1.0 g / m ² tetraphenylphosphonium chloride 30 mg / m ² saponin 200 mg / m ² polyethylene glycol 100 mg / m ² sodium dodecylbenzene sulfonate 100 mg / m ² hydroquinone 200 mg / m ² phenidone 100 mg / m ² sodium styrenesulfonate-maleic acid copolymer (Mw = 250,000) 200 mg / m ² gallic acid butyl ester 500 mg / m ² tetrazolium compound 30 mg / m ² 5-methylbenzo triazole 30 mg / m ² 2-mercaptobenzimidazole-5-sulfonic acid 30 mg / m ² Inner toe Thane gelatin (isoelectric point ^{4.9) 1.5g / m 2 1- (} p- acetyl amide Fe Le) -5-mercaptotetrazole 30 mg / m ² silver amount 2.8 g / m ²

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(Emulsion Layer Protective Film) An emulsion layer protective film was prepared and coated in the following amounts.

Fluorinated dioctyl sulfosuccinate 300 mg / m ² matting agent: polymethylmethacrylate (average particle size 3.5 μm) 100 mg / m ² lithium nitrate 30 mg / m ² acid-treated gelatin (isoelectric point 7.0) 1.2 g / m ² colloidal silica 50 mg / m ² sodium styrenesulfonate-maleic acid copolymer 100 mg / m ² mordant 30 mg / m ² dye 30 mg / m ²

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(Backing Layer) A backing dye having the following composition was coated on the support on the side opposite to the emulsion layer. The gelatin layer was hardened with glyoxal and 1-oxy-3,5-dichloro-S-triazine sodium salt and a hydroxy-containing epoxy compound (d).

Hydroquinone 100 mg / m ² Phenidone 30 mg / m ² Latex polymer: Butyl acrylate-styrene copolymer 0.5 g / m ² Styrene-maleic acid copolymer 100 mg / m ² Citric acid 40 mg / m ² Benzotriazole 100 mg / m ² Styrene sulfonic acid-maleic acid copolymer 100 mg / m ² lithium nitrate 30 mg / m ² backing dye (a) (b) (c) 40,30,30 mg / m ² ossein gelatin 2.0 g / m ²

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The samples obtained as described above were exposed on the entire surface and developed using the developing solution and fixing solution shown below, and then the surface resistivity test and the ash adhesion test method were performed. The results are shown in Table 1.

<Developer Solution Formulation> Hydroquinone 25 g 1-phenyl-4,4-dimethyl-3-pyrazolidone 0.4 g sodium bromide 3 g 5-methylbenzotriazole 0.3 g 5-nitroindazole 0.05 g diethylaminopropane-1, 2-diol 10 g potassium sulfite 90 g sodium 5-sulfosalicylate 75 g sodium ethylenediamine tetraacetate 2 g Water was made up to 1 liter.

The pH was adjusted to 11.5 with caustic soda.

<Fixer Formulation> (Composition A) Ammonium thiosulfate (72.5 w% aqueous solution) 240 ml Sodium sulfite 17 g Sodium acetate trihydrate 6.5 g Boric acid 6 g Sodium citrate dihydrate 2 g Acetic acid (90 w% aqueous solution) 13.6 ml (Composition B) Pure water (ion exchanged water) 17 ml Sulfuric acid (50 w% aqueous solution) 3.0 g Aluminum sulfate (aqueous solution having an Al ₂ O ₃ conversion content of 8.1 w%) 20 g Water 500 ml when using the fixing solution In the above composition A, composition B
And finished to 1 l before use. P of this fixer
H was about 5.6.

(Development processing conditions) (Process) (Temperature) (Time) Development 40 ° C. 8 seconds Fixing 35 ° C. 8 seconds Rinsing at room temperature 10 seconds (Evaluation of antistatic performance: ash adhesion test method) 23 ° C., 20% RH Under the conditions, rub the emulsion side of the developed sample with a rubber roller several times, bring the ash of the cigarette closer,
Whether or not the film adheres was examined according to the following evaluation.

◯: No adhesion even when approached up to 1 cm ○ Δ: Adhesion when approached up to 1 cm to 4 cm △: Adhesion when approached up to 4 cm to 10 cm ×: Adhesion even at 10 cm or more ○ Δ If practically hindered Absent.

(Surface resistivity measurement method) A teraohm meter VE-30 manufactured by Kawaguchi Electric Co., Ltd. was used, and an applied voltage of 100 V and 2
It was measured under the conditions of 3 ° C. and 20% RH.

(Measurement Method of Absolute Value of Impedance) For impedance measurement, a combination of Precision LCR Meters HP4284A and HP16451B manufactured by Yokogawa-Hewlett-Packard (hereinafter YHP) was used.

The absolute value of the impedance of the film material was measured by the void method in an atmosphere of 23 ° C. and 20% RH.
For measurement of the void method, refer to the HP 16451B instruction manual (part number 16451-97000, print 198).
Electrode non-contact method described in December 1997). Using Electrode-A having a main electrode diameter of 3.8 cm, the sample size was cut into a square of 5.5 cm x 5.5 cm. The dispersed layer of conductive particles was measured upward.

(Haze Test) Samples subjected to undercoating treatment up to the second layer, ie, undercoating coating solutions B-1 and B-2-1 and samples at the stage where B-3 was applied to the upper layers of each of the samples were produced by TEPCO. Color Turbidimeter Model T-2600 DA
The haze was measured by using and displayed in%.

Example 2 Samples were prepared in the same manner as in Example 1 except that the undercoating coating solution B-2-2 was used in place of the undercoating coating solution B-2-1. The same evaluation as was done.

<Undercoating liquid B-2-2> Copolymer latex liquid (solid content 30%) of butyl acrylate 40% by weight, styrene 20% by weight and glycidyl acrylate 40% by weight 23 g, conductive P2 dispersion Liquid 415 g Polypropylene glycol (molecular weight 450) 0.00001 g Water 568 g (Example 3) Sample preparation conditions are undercoating liquid B-2-1.
Was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-3 was used instead of the above, and the same evaluation as in Example 1 was performed.

<Undercoating Liquid B-2-3> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glydyl acrylate 23 g Conductive P3 dispersion Liquid 760 g Polyethylene glycol (Molecular weight 600) 1.65 g Water 700 g (Example 4) Sample preparation conditions are undercoating liquid B-2-1.
Was prepared in the same manner as in Example 1 except that the subbing coating solution B-2-4 was used instead of, and the same evaluation as in Example 1 was performed.

<Undercoating liquid B-2-4> Copolymer latex liquid (solid content 30%) of butyl acrylate 40% by weight, styrene 20% by weight, and glycidyl acrylate 40% by weight 24 g Conductive P2 dispersion Liquid 600 g Polyethylene glycol (molecular weight 600) 1.2 g Water 800 g (Example 5) Sample preparation conditions are undercoating liquid B-2-1.
Was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-5 was used instead of the above, and the same evaluation as in Example 1 was performed.

<Undercoating liquid B-2-5> Copolymer latex liquid (solid content 30%) of butyl acrylate 40% by weight, styrene 20% by weight and glycidyl acrylate 40% by weight 27 g Conductive P2 dispersion Liquid 80 g Polyvinyl alcohol (molecular weight 350) 0.0001 g Water 700 g (Example 6) Sample preparation conditions are undercoating liquid B-2-1.
Was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-6 was used instead of the above, and the same evaluation as in Example 1 was performed.

<Undercoating liquid B-2-6> Copolymer latex liquid (solid content 30%) of 40 wt% butyl acrylate, 20 wt% styrene and 40 wt% glycidyl acrylate 27 g Conductive P4 dispersion Liquid 62 g Polyethylene glycol (molecular weight 600) 0.00012 g Water 700 g (Example 7) The sample preparation conditions are undercoating liquid B-2-1.
Was prepared in the same manner as in Example 1 except that the undercoating coating solution B-2-7 was used instead of the above, and the same evaluation as in Example 1 was performed.

<Undercoating Coating Liquid B-2-7> Copolymer latex liquid (solid content 30%) of butyl acrylate 40% by weight, styrene 20% by weight and glycidyl acrylate 40% by weight 27 g Conductive P4 dispersion Liquid 39 g Polyethylene glycol (molecular weight 600) 0.52 g Water 690 g (Example 8) Sample preparation conditions are undercoating liquid B-2-1.
Was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-8 was used instead of the above, and the same evaluation as in Example 1 was performed.

<Undercoating liquid B-2-8> Copolymer latex liquid of butyl acrylate 40% by weight, styrene 20% by weight and glydyl acrylate 40% by weight (solid content 30%) 27 g Conductive P4 dispersion Liquid 16 g Polyethylene glycol (molecular weight 600) 0.33 g Water 750 g (Example 9) Sample preparation conditions are undercoating liquid B-2-1.
Was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-9 was used instead of the above, and the same evaluation as in Example 1 was performed.

<Undercoating Coating Liquid B-2-9> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glycidyl acrylate 27 g Conductive P3 dispersion Liquid 430 g Polyethylene glycol (molecular weight 600) 0.0001 g Water 720 g (Example 10) The sample preparation conditions are the undercoating coating liquid B-2-
Example 1 was prepared in the same manner as in Example 1 except that the subbing coating solution B-2-10 was used instead of 1, and the same evaluation as in Example 1 was performed.

<Undercoating Liquid B-2-10> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glydyl acrylate 27 g Conductive P3 dispersion Liquid 420 g Polyethylene glycol (molecular weight 600) 0.00015 g Water 730 g (Example 11) Sample preparation conditions are undercoating liquid B-2-
Example 1 was prepared in the same manner as in Example 1 except that the subbing coating solution B-2-11 was used instead of 1, and the same evaluation as in Example 1 was performed.

<Undercoating liquid B-2-11> Copolymer latex liquid of butyl acrylate 40% by weight, styrene 20% by weight and glycidyl acrylate 40% by weight (solid content 30%) 27 g Conductive P2 dispersion Liquid 700 g Polyethylene glycol (molecular weight 600) 1.6 g Water 800 g (Example 12) The sample preparation conditions are undercoating liquid B-2-
Example 1 was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-12 was used instead of 1, and the same evaluation as in Example 1 was performed.

<Undercoating coating liquid B-2-12> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glydyl acrylate 23 g Conductive P3 dispersion Liquid 620 g Polyethylene glycol (molecular weight 600) 1.55 g Water 690 g (Example 13) Sample preparation conditions are undercoating liquid B-2-
Example 1 was prepared in the same manner as in Example 1 except that the subbing coating solution B-2-13 was used instead of 1, and the same evaluation as in Example 1 was performed.

<Undercoating Liquid B-2-13> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glydyl acrylate 27 g Conductive P2 dispersion Liquid 82 g Polyethylene glycol (molecular weight 600) 0.17 g Water 690 g (Example 14) Sample preparation conditions are undercoating liquid B-2-
Example 1 was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-14 was used instead of 1, and the same evaluation as in Example 1 was performed.

<Undercoating liquid B-2-14> Copolymer latex liquid of butyl acrylate 40% by weight, styrene 20% by weight and glycidyl acrylate 40% by weight (solid content 30%) 27 g Conductive P1 dispersion Liquid 82 g Polyethylene glycol (molecular weight 600) 0.00012 g Water 680 g (Example 15) The sample preparation conditions are undercoating liquid B-2-
Example 1 was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-2-15 was used instead of 1, and the same evaluation as in Example 1 was performed.

<Undercoating liquid B-2-15> Copolymer latex liquid of butyl acrylate 40% by weight, styrene 20% by weight and glycidyl acrylate 40% by weight (solid content 30%) 27 g Conductive P2 dispersion Liquid 41 g Polyethylene glycol (molecular weight 600) 0.96 g Water 700 g (Example 16) Sample preparation conditions are undercoating liquid B-2-
Example 1 was prepared in the same manner as in Example 1 except that the undercoating coating solution B-2-16 was used instead of 1, and the same evaluation as in Example 1 was performed.

<Undercoating Coating Liquid B-2-16> Copolymer latex liquid (solid content 30%) of butyl acrylate 40% by weight, styrene 20% by weight, and glycidyl acrylate 40% by weight 27 g Conductive P2 dispersion Liquid 83 g Polyethylene glycol (molecular weight 600) 0.48 g Water 700 g (Example 17) The sample preparation conditions were the same as in Example 1 except that the following SPS film was used as the plastic film. Similar evaluation was performed.

(SPS Film) JP-A-3-13184
SPS pellets were prepared according to No. 3. The pellets obtained were melt extruded at 330 ° C. This molten polymer was extruded through a pipe into a die. Then, the film thickness of 100 is obtained by extruding and cooling while electrostatically applying to the cooled casting drum from the die slit.
A 0 μm SPS unstretched sheet was obtained.

The prepared sheet was preheated at 115 ° C. and then stretched 3.3 times in the machine direction. It was preheated at 100 ° C in a tenter and then stretched 3.3 times in the transverse direction at 130 ° C. While slightly relaxing in the lateral direction, heat set at 225 ° C to 100
A μm thick SPS film was obtained.

(Comparative Example 1) Sample preparation conditions were as follows: instead of the undercoating coating solution B-2-1 as the undercoating layer, the undercoating coating solution B was used.
A haze value was evaluated in the same manner as in Example 1 except that -0-1 was used.

<Undercoating Coating Liquid B-0-1> Copolymer latex liquid of butyl acrylate 40% by weight, styrene 20% by weight and glydyl acrylate 40% by weight (solid content 30%) 270 g Water to 1 liter Finish.

(Comparative Example 2) The sample preparation conditions were as follows: instead of the undercoating coating solution B-2-1 as the undercoating layer, the undercoating coating solution B was used.
Example 1 was prepared in the same manner as in Example 1 except that -0-2 was used, and the same evaluation as in Example 1 was performed. However, the undercoat coating liquid B-0-
The tin oxide powder solution contained in No. 2 is an aqueous ammonia solution containing 8 wt% of powder obtained by firing tin oxide containing 3% of antimony oxide added at a temperature of 900 ° C. and pulverizing with a ball mill. This powder had an average particle size of 0.5 μm and a specific gravity of 6.9.

The subbing coating solution was prepared in the same manner as in Example 1, but a tin oxide powder precipitate was observed in the coating solution container after the film was coated.

<Undercoating Coating Liquid B-0-2> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glydyl acrylate 27 g Tin oxide powder solution 90 g polyethylene glycol (molecular weight 600) 1.3 g water 800 g (Comparative Example 3) The sample preparation conditions were that the undercoating coating liquid B-0-3 was used as the undercoating layer instead of the undercoating coating liquid B-2-1. Other than that, it created like Example 1 and performed the same haze value evaluation as Example 1. The film produced had a slightly grayish tint.

<Undercoating liquid B-0-3> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glydyl acrylate 27 g Conductive P3 dispersion Liquid 45 g Water 750 g (Comparative Example 4) The sample was prepared in the same manner as in Example 1 except that the undercoating coating liquid B-0-4 was used as the undercoating layer instead of the undercoating coating liquid B-2-1. Then, the same haze value evaluation as in Example 1 was performed. The film produced had a slightly grayish tint.

<Undercoating liquid B-0-4> Copolymer latex liquid (solid content 30%) of 40% by weight of butyl acrylate, 20% by weight of styrene and 40% by weight of glydyl acrylate 10 g Conductive P3 dispersion Liquid 580 g Polyethylene glycol (molecular weight 600) 1.4 g Water 480 g (Comparative Example 5) Sample preparation conditions are undercoating liquid B-0-1.
Example 1 was prepared in the same manner as in Example 17 except that
The same evaluation was performed.

[0126]

[Table 1]

As is clear from Table 1, the photographic light-sensitive material of the present invention has a good dust adhesion test and good transparency.

[0128]

Industrial Applicability A plastic film material or a silver halide photographic light-sensitive material having excellent transparency and high antistatic performance even under low humidity can be provided.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location C08L 25/06 LDT C08L 25/06 LDT G03C 1/795 G03C 1/795 1/85 1/85

Claims (5)

[Claims] 1. A film material having at least one conductive layer, wherein the absolute value of impedance of the film material at a frequency of 20 Hz is 4 × 10 ⁵ Ω or more, and the at least one conductive layer. In addition, the polymer binder, the conductive particles and / or the semiconductor particles are added in an amount of 1 vol% or more and 50 vol% or less of the conductive layer, and an organic compound having a Tg or a melting point of 50 ° C. or less is 0.0001 vo.
1% or more and 10 vol% or less are contained, The plastic film material characterized by the above-mentioned. 2. The conductive particles or semiconductor particles are oxide sols containing a metal element.
The described plastic film material. 3. The conductive particles or semiconductor particles are 40
The plastic film material according to claim 1 or 2, which is an oxide containing a metal element produced at a temperature of 0 ° C or lower. 4. The plastic film material according to claim 1, wherein the film material is a plastic film containing syndiotactic polystyrene as a main component. 5. A silver halide photographic light-sensitive material comprising the film material according to any one of claims 1 to 4 as a support.