JP2819120B2 - Paint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a resin coating containing gelatin powder ground in a solvent.

[0002]

2. Description of the Related Art Gelatin is a kind of derived protein which is insoluble in organic solvents, swells in cold water, dissolves in warm water to form a highly viscous sol, and has a concentration of 2-3% or more at room temperature. It is used as a modifier for synthetic rubber because of its characteristic of forming an elastic gel.

Further, in order to provide similar stretchability to a coating film provided on the surface of various products, to provide a function of absorbing and releasing moisture, and to simultaneously provide a water-repellent function and a ventilation property, these coatings are used. Attempts have been made to incorporate gelatin into the paint that creates the coating.

[0004] As a result of many experiments, the gelatin contained in these paints has a smaller particle size.
It has been shown that specific effects can be imparted to the formed coating.

[0005] In particular, in order to provide a smooth feel and a unique feel without sweating characteristic to a coating film formed on the surface of a product or the like and a specific hand feeling, the particle size of gelatin powder contained in the coating film is required. It was convenient to make the values in a finer range.

Therefore, gelatin that has been powdered or granulated has been pulverized with a dry ball mill or the like, and classified before use.

[0007]

However, in such a conventional method, it is difficult to re-pulverize gelatin, and it is necessary to produce a ground gelatin powder having uniform quality and uniform fine particle size. Could not.

[0008] Further, a coating film produced by using a ground gelatin powder in which a gelatin powder having a relatively large particle diameter is mixed or a characteristic powder of the gelatin is impaired, has a specific smoothness and texture. No feeling is brought about, and this film has a unique moisture absorption / desorption function, elastic function,
There was a drawback that a water-repellent function or the like was not provided.

[0009] In particular, in the simple pulverization using a dry ball mill, which is a conventional method, a large amount of heat is generated during the pulverization due to grinding, impact or shearing, resulting in various inconveniences due to the generated heat.

First, the heat generated during the pulverization sometimes causes the gelatin during the pulverization to be partially converted into a viscoelastic gel state, and it often occurs that the pulverized gelatin cannot be efficiently pulverized. Alternatively, there is a disadvantage that the gelatin particles are fused to each other to form a viscoelastic mass. In particular, such inconveniences occurred remarkably, for example, when the water content of the gelatin to be pulverized was high, or when the gelatin was pulverized under humid conditions.

[0011] Next, when water is rapidly lost from the gelatin during the grinding due to the heat generated during the grinding, the hydrophilicity of the ground gelatin powder is hindered, and there is a drawback that the function of swelling due to moisture or the function of eluting with warm water is lost. In particular, crushed gelatin powder based on crushing under the condition that the water content in the crushed gelatin is less than 2% by weight, inherent viscoelasticity such as hydrophilicity, adhesiveness or expansion and contraction inherent in gelatin powder. There is a disadvantage that various properties such as properties are impaired.

From this point, in order to pulverize powdered or granular gelatin with a dry ball mill, heat generated by friction or collision at the time of pulverization is accumulated as much as possible, or
It was necessary to pulverize slowly over a long period of time so as not to excessively generate such frictional heat. For this reason, the pulverization efficiency of gelatin is poor, and the particle size of the finished pulverized gelatin powder must be kept within a relatively large range, so that a finer gelatin powder cannot be obtained.

Therefore, powder or granular gelatin is mixed and mixed with a liquid polymer or a resin solution diluted with various solvents, and the powder or granular gelatin mixed with the liquid polymer or resin solution is charged into a wet pulverizer. And then crushed.

The wet pulverization method has the drawbacks that the flow resistance of the liquid polymer or resin solution is large, stirring and pulverization are not performed smoothly, and the mixed gelatin is not uniformly dispersed in the polymer. Was. In particular, when the stirring of this kind of liquid polymer or resin solution is continued, the viscosity of these polymer or resin solutions tends to increase with time, and it may be difficult to perform a smooth pulverization treatment by a wet pulverizer. In many cases, when the pulverization temperature in the pulverizer was increased with the stirring of the pulverizer, such inconvenience on pulverization tended to occur more remarkably.

When powder or granular gelatin is pulverized by a dry ball mill, a cooling or exhaust device for removing the heat generated due to the friction or impact, or a device for keeping the water content of gelatin constant, is used in the apparatus itself. It is necessary to provide a device or the like, which has a disadvantage that the crushing device itself becomes large-scale.

Further, when powder or granular gelatin is pulverized by a dry ball mill, the particle size of the gelatin powder produced by various conditions such as temperature, humidity or ball stirring speed in the pulverizer varies, and it takes a long time. There is a disadvantage that gelatin powder having a large particle size remains in gelatin powder having a fine particle size even by pulverization.

In particular, when powdered or granular gelatin is pulverized by a conventional method, the particle size is 1.0 μm (in the case of elongated particles, the particle size was measured on the shorter side; hereinafter referred to as μm).
From about 50 μm to produce a very fine particle size gelatin powder, but there is a disadvantage that a relatively large amount of relatively large particle size gelatin powder is left behind. In such a problem, grinding continues for a long time. The same was true when doing so.

As a result, when these gelatin powders are contained in a resin material such as a polyurethane resin solution to form a paint,
A part of the mixed gelatin protrudes from the surface of the coating film, which gives a rough feeling to the surface of the coating film, and easily causes a margin between the peripheral portion of the large gelatin particles and the coating film,
There is a disadvantage that gelatin particles having such a large particle diameter fall off from the coating film or cracks are formed on the surface of the coating film from the portion.

In a method of pulverizing gelatin powder by a dry ball mill and in a paint using the pulverized gelatin powder, granular or powdery gelatin is pulverized at a water content of about 10 to 15% by weight, and the pulverized gelatin is pulverized. It is mixed with the paint as it is. However, when such a gelatin powder is mixed with a paint, the finer the gelatin powder to be mixed, the more the gelatin powder tends to be not smoothly dispersed in the paint, and particularly the target paint liquid has a viscosity. In some cases, it was not uniformly dispersed in the coating liquid.

Further, when the gelatin powder is mixed as a component of the coating film, the gelatin powder having a large particle size contained in the constituents of the coating material is coated on the surface of the coating film when forming the coating film. There have been inconveniences resulting in streak wounds or clogging of the spray gun.

In view of the disadvantages of the prior art, the present invention eliminates the adverse effect on the ground gelatin caused by the heat generated by the friction or impact generated during the grinding of the powder or the granular gelatin powder, and provides a short and uniform method. It is possible to pulverize and mold fine gelatin powder having a particle size of, and to maintain the quality peculiar to gelatin, and to prepare a gelatin powder having a uniform particle size in suspension in a solvent, The purpose of this is to provide a paint that is uniformly mixed.

[0022]

In order to achieve the above object, a paint according to the present invention contains a gelatin powder finer than 6 μm which has been wet-milled with a solvent and contains the ground gelatin powder. It is constituted by being blended into a paint together with a solvent as a medium.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a paint according to a typical embodiment of the present invention will be described.

First, solid gelatin usually prepared as tasteless, odorless white powder or transparent flakes (here, gelatin is mainly industrial gelatin, but any of various properties and concentrations of gelatin) Basically, it contains glue.) Basically, a wet ball mill with a solvent such as dimethylformamide, toluene, etc. in a state of air-dry water content (water content when left in the air = equilibrium water content) The mixture is put into a wet pulverizer, and the gelatin is pulverized in a state where the gelatin is not in contact with and ground by the solvent. The pulverization by a pulverizer such as a wet ball mill is continued until the particle size of the pulverized gelatin powder becomes smaller than 6 μm.

In order to make the particle size of the gelatin powder pulverized by the wet pulverizer uniform and to pulverize the pulverized gelatin to a desired particle size in a short time, the gelatin powder supplied to the wet pulverizer is used. And the gelatin powder is 50
Fine gelatin powder belonging to a range smaller than μm is preferably classified by a sieve or an air classifier so as to be 90% by weight or more of the total amount of the gelatin powder.

The solvent used in the above description is typically an organic solvent, and a solvent suitable for a paint containing the ground gelatin is used. This solvent requires gelatin to be insoluble, and typically uses dimethylformamide, toluene, methyl ethyl ketone, etc., as well as methanol, isopropyl alcohol, n-butanol, benzyl alcohol, ethyl acetate, butyl acetate, acetone , Methyl isobutyl ketone,
Cyclohexane, tetrahydrofuran, dioxane, xylol, 2-nitropropane, ethane dichloride, trichlorethylene, perchlorethylene, methyl cellosolve, ethyl cellosolve and the like are used.

Since gelatin is insoluble in such a solvent, gelatin does not swell or dissolve even when gelatin is mixed into the solvent, and water and the like in gelatin are absorbed by the solvent. The gelatin does not harden. Also, in the process of pulverizing gelatin, gelatin introduced into the solvent is pulverized in the same state as when mixed into the solvent.

Using such a solvent as a wet medium, granular or powdered gelatin is charged into a pulverizer to perform pulverization.

This pulverizing apparatus may be any apparatus as long as it is suitable for wet pulverization of powder or granules, and among various ball mills, one suitable for wet pulverization is mainly used.

The pulverization by the pulverizer is continued until the particle size of the input granules or powdered gelatin becomes smaller than 6 μm. Therefore, the grinding conditions such as the grinding time by the grinder are as follows: the capacity of the grinder, the diameter and the amount of the balls used in the grinder, the type and the amount of the gelatin to be charged into the grinder, and the usage. The type and amount of the solvent, the stirring speed of the crusher, and various conditions such as the crushing temperature can be changed as needed.However, grinding the gelatin as far as possible does not increase the solvent temperature during the crushing is the quality of the crushed gelatin. This is necessary so as not to cause the deterioration of.

Further, in order to more effectively perform the pulverization by the above-mentioned pulverizer, the pulverized gelatin is preliminarily pulverized, and the preliminarily pulverized gelatin is classified by the air volume classification based on the true specific gravity or the sieve classification based on the bulk to reduce the particle size. They are usually prepared by pulverization using a dry pulverizer such as a turbo mill.

As described above, in wet pulverization using a solvent in which gelatin is insoluble in a pulverizing medium, gelatin during pulverization does not dissolve, swell, or harden by the solvent, and the outside air It is characterized in that there is no moisture absorption and desorption phenomenon of gelatin during the pulverization since the pulverization is performed in a state where the pulverization is blocked. As a result, in the process of grinding the gelatin, the water content of the gelatin is not increased, and the gelatin does not fuse with each other or become soft and unsuitable for grinding or impact grinding. Further, the quality does not deteriorate until the water content of the gelatin is reduced in the process of grinding the gelatin and the hydrophilicity is impaired.
The gelatin powder pulverized in this manner is used together with a solvent at the time of pulverization for forming a paint.

Example 1 Gelatin was pulverized by a turbo mill in a state of an air-dried moisture content, and classified to obtain the following gelatin powder. The water content of this gelatin powder was 12% by weight, but in actual grinding of gelatin powder, it was possible to use gelatin powder having a water content in the range of 5 to 15% by weight. 29.85 μm or more to less than 42.21 μm 25.9% by weight 21.10〃 to 29.85〃 26.1〃14.92〃 to 21.10〃21.5〃10.55〃 to 14.92〃11 0.2〃7.46〃10.55〃6.3〃5.27〃7.46４６4.4〃3.73〃5.27〃1.4〃2.63〃3.77 １ 1.4 〃 1.69 〃 to 2.63 ０．８ 0.8 １．０ 1.01 〜 to 1.69 ０．６ 0.6 ０．６ 0.66 〜 to 1.01 〃 0.4 ０．４ 0.43 〜 to 0 .66 ０．０ 0.0 〃

The above gelatin powder was charged into a pulverizer at a ratio of 30 parts by weight to 100 parts by weight of dimethylformamide. 70% by volume of alumina-based balls having a diameter of 3 mm and 30% by volume of a solvent containing gelatin powder were used for this pulverizer.
% And stirred for 60 minutes to obtain a gelatin powder having the following particle size. 3.73 μm or more to less than 5.27 μm 11.0% by weight 2.63 mm to 3.73 mm 25.6 mm 1.69 mm to 2.63 mm 18.4 mm 1.01 mm to 1.69 mm 16 5.5 ０．６ 0.66 〃 1.01 〃 15.5 ０．４ 0.43 〃 0.66 ７ 7.5 ０．３ 0.34 〃 0.43 〃 5.2 ０．２ 0.24 〜 0.34 〃 0.3 〃

Example 2 The above-mentioned granulated powder or powdered gelatin in a turbo mill was crushed by a crusher filled with zirconia-based balls of 3 mm in diameter under the following conditions. The diameter became 6 μm or less. 50% by volume of gelatin mixed with 100 parts by weight of toluene and 50 parts by weight of gelatin (by volume) 3% zirconia ball with a diameter of 50 mm (by volume)

The amount of gelatin powder mixed with the solvent is appropriately determined depending on the properties of the solvent, particularly the degree of viscosity of the solvent, and dimethylformamide is higher in viscosity than toluene, so that the amount of gelatin powder is higher. It is necessary to make the blending amount smaller than that of toluene.

Further, when the amounts of gelatin and the solvent to be charged into the pulverizer are increased, much pulverization time is required to obtain the above-mentioned gelatin powder having a particle size of 6 μm corresponding to the increase. In addition, when the diameter of the ball charged into the crusher was increased, the crushing time was shortened. However, there was a tendency for large-diameter gelatin powder to remain, and for a ball having a diameter larger than necessary. When used, gelatin powder having a uniform particle size could not be obtained.

Further, when the gelatin powder was pulverized with a wet ball mill using dimethylformamide without previously adjusting the particle diameter of the gelatin powder as in Example 1,
It was necessary to lengthen the pulverization time by about 30 minutes as compared with the use of gelatin powder having a uniform particle size. And even in this pulverization,
A fine and uniform gelatin powder smaller than μm could be produced.

The gelatin powder pulverized by the above-described method was determined to have the following characteristics during the pulverization process and the produced gelatin powder.

First, the granular or powdered gelatin charged into the pulverizer is taken up mainly in an organic solvent in which the gelatin is insoluble, and the gelatin is wrapped in the solvent. Since the gelatin is pulverized in a crushed state, the gelatin does not fuse with each other and does not fuse with the ball or the surface of the pulverizer. In particular, the heat generated by the grinding or impact of the ball is not dispersed and directly transmitted to the gelatin by the solvent, and there is no fear that the gelatin is deteriorated by the heat or the gelatin is fused.
In addition, since the gelatin is pulverized in a state covered with the solvent, in the pulverization process of the gelatin, the gelatin becomes wet and swells or becomes sol-like, or in the pulverization process due to the evaporation and heating of the water. No gelling phenomenon occurs. Therefore, gelatin mixed with the solvent,
The solvent contains the water content when mixed, and does not impair the swelling function specific to gelatin or the properties such as hydrophilicity and specific viscoelasticity. Also, it is possible to reliably and easily produce a fine gelatin powder having a uniform particle size without making it difficult to pulverize due to the dampness of gelatin and the increase in viscosity with heating during the pulverization process of gelatin. Can be.

Further, the gelatin powder obtained by pulverization is
In the case of the above-mentioned pulverization method, the particle size is 6
It is finer than μm,
It has a feature that it is not entangled, and is further uniformly dispersed in the solvent used for pulverization, and has a feature that gelatin powder is generally dispersed like a suspension.

Each of the gelatin powders in these solvents floats in the solvent in an independent state, and is isolated from the outside air. This facilitates the management of the pulverized gelatin powder, and the pulverized gelatin powder does not become wet, harden, or fuse with each other.

The gelatin powder thus crushed is
It is blended into a paint together with the solution used for grinding the gelatin powder. The method of mixing and the amount of the mixing are appropriately determined according to the characteristics of the paint and the like.

The paint containing the solvent containing the gelatin powder is a resin paint suitable for forming a paint film to be produced. That is, the above-mentioned gelatin powder is pulverized using a solvent suitable for the paint of the paint film to be formed.

For example, such a paint is prepared by adding a solvent containing the above-mentioned gelatin powder as a part of a film-forming aid element or as an improvement or an amount-enhancing element to a film-forming element and a pigment adapted to various uses. It is created by things.

The paint film thus produced is
Since the particle size of the gelatin powder contained in these materials belongs to a range finer than 6 μm, even if the thickness of the coating film is in the range of 0.02 to 0.002 mm, The mixed gelatin powder did not protrude or protrude from the surface of the film, and the coating film was smooth and had a good touch.

Further, by eluting a part of the gelatin powder contained in the resin molded product of the coating film formed as described above, a large number of pores finer than several microns are formed on the surface of the coating film. Can be provided.

By providing pores finer than 2-3 μm on the surface of the coating film, the coating film is provided with air permeability. It has the feature of allowing water vapor having a particle size of about 0004 μm to pass through and not water droplets. For this reason, water resistance and moisture permeability can be imparted to the coating film.

Accordingly, the surface of various kinds of cloths, leathers, wood products and the like contains the above-mentioned gelatin powder in an amount of from 0.02 to 0.00.
When a coating film having a thickness of 2 mm is formed and the gelatin powder in the coating film is eluted, water resistance and moisture permeability specific to these fabrics, leathers, wood products, and the like are provided. Incidentally, the diameter of a normal raindrop is 2000 μm, and even a fine raindrop has a diameter of 100 μm, and does not pass through the fine holes provided in the coating film. Also, the raindrops adhering to the surface of the coating film and the like do not infiltrate through the fine holes due to the surface tension.

Example 3 A polyurethane resin coating solution was prepared using the solvent containing the gelatin powder, and a film-like coating film formed by the coating solution was transferred to the surface of a woven or knitted fabric.

Gelatin powder finer than 6 μm 10 parts by weight Toluene 70 parts by weight Polyurethane resin solids 30 parts by weight This resin solution was applied to the surface of release paper with a doctor knife coating method to a thickness of 0.008 mm. Was dried and peeled off from the release paper to form a 0.008 mm thick film-like coating film. Also, the release paper was peeled off while adhering to the surface of the nonwoven fabric having a thickness of 1.5 mm without peeling off the coating film to form a coating skin layer on the surface of the nonwoven fabric.
Then, this non-woven fabric is immersed in warm water of 60 ° C.
After washing with water for a minute, the gelatin powder contained in the coating film disappeared corresponding to 35% by weight of the total amount.

A film-like coating film was prepared while increasing the amount of the gelatin powder mixed between 3 parts by weight and 30 parts by weight in increments of 5 parts by weight. In terms of parts by weight, the resulting coating film had good gloss and sufficient stiffness, but had a sticky feeling during bonding. On the other hand, the coating surface containing 35 parts by weight of gelatin powder has a contact resistance unique to gelatin and has a good feel to the skin, but when a strong force acts on the coating surface, wrinkles are formed on the coating surface, Also, in the case of a product obtained by laminating the above-mentioned coating film, a part of the underlying fabric surface was sometimes exposed while the surface was distorted. Therefore, the mixing amount of the gelatin powder is 3
-30 parts by weight is optimal. However, the amount of the gelatin powder can be further changed depending on the type of the resin for forming the coating film, the amount of the solvent used, the molding conditions, and the like. In addition, the elution of gelatin powder by the above-mentioned hot water washing, as the temperature of the hot water used becomes higher, a large amount of gelatin powder can be eluted in a short time, but the coating film or the laminated film is damaged, There was a disadvantage that the base fabric was damaged. From this fact, it is possible to comprehensively determine the type, material characteristics and material characteristics of the coating film itself, the amount of gelatin powder contained in the coating film and the amount of gelatin powder eluted from the coating film, etc. In consideration of the above, the gelatin powder contained in the coating film is eluted. In addition, in the polyurethane resin coating film of the said Example, 60-150 degreeC
It is ideal to elute the contained gelatin powder with warm water or hot water. With warm water at 60 ° C. or lower, the amount of the contained gelatin powder eluted was small and a long time was required.

Example 4 70 parts by weight of toluene 10 parts by weight of gelatin powder finer than 6 μm 30 parts by weight of polyvinyl chloride resin The PVC coating film produced in Example 4 is flexible and has a higher flexibility than a conventional PVC coating film. The elasticity was significantly increased and a moisture absorbing function was provided.

Example 5 Toluene 70 parts by weight Gelatin powder finer than 6 μm 10 parts by weight Acrylic resin 30 parts by weight When a coating film was formed as a paint at the compounding ratio of Example 5, it was excellent in abrasion resistance and moisture absorption function. A coating film having

Example 6 Toluene 70 parts by weight Gelatin powder finer than 6 μm 10 parts by weight Polyvinyl chloride resin 15 parts by weight Acrylic resin 15 parts by weight A coating formed using a paint containing a resin solution having the compounding ratio of Example 6 The film has good hygroscopicity and contact resistance, and has a moderate touch.

Example 7 A gelatin powder was pulverized in toluene, a two-part reaction type urethane paint was mixed with the toluene having the pulverized gelatin powder, and then an isocyanate was added and mixed. A membrane was obtained. This coating film was excellent in matting effect, and the texture when touched by hand was good without stickiness. In this example, a coating film was formed in a range of 10 to 40% by weight of the gelatin powder based on the total weight of the polyester and the gelatin powder in the two-part reaction type urethane resin paint.

Example 8 A liquid urethane resin liquid (non-yellowing one-pack polyurethane, nonvolatile content: 30%) was prepared using a mixture of methyl ethyl ketone.
The mixture was adjusted to 0 to 50 poise (25 ° C.), 50 parts by weight of gelatin powder was mixed with 100 parts by weight of the urethane resin together with toluene, and the mixture was stirred and mixed to 100 poise (25 ° C.). This mixture was sprayed on a PVC plate with a spray gun and dried at 100 ° C. for 1 minute to obtain a coating film having good hygroscopicity and a high matting effect.

Example 9 A mixed solution obtained by mixing a solvent containing 30 parts by weight of gelatin powder in 100 parts by weight of a urethane resin was applied on release paper, and dried to obtain a 0.006 mm thick film. The coated film was transferred to a woven fabric substrate and bonded. The surface of the woven fabric thus produced had no stickiness and was excellent in feel.

Example 10 A one-pack type urethane resin containing gelatin powder (mixture of 30% by weight of non-volatile content using gelatin powder-containing methyl ethyl ketone as a solvent) was coated on release paper with a comma roll and dried.
Further, on this coating layer, a two-pack type urethane resin containing gelatin powder (a mixed solution of 50% by weight of non-volatile content using methyl ethyl ketone containing gelatin powder as a solvent) is applied.
After drying, a laminated coating film was formed, and the laminated coating film was peeled off from the release paper and laminated and bonded to the surface of the nonwoven fabric.
The surface of the non-woven fabric having this coating film had no sticky feeling, and the same adhesive strength as laminating adhesive containing no gelatin powder was obtained.

[0060]

According to the present invention, since the gelatin powders are pulverized in a state where they are separated by the solvent, the gelatin powders do not directly touch each other and fuse together.

Further, when grinding the gelatin powder, there is no generation of heat due to the grinding or impact grinding, and there is no inconvenience of fusion of the gelatin powder or deterioration of quality due to the heat change.

Further, since the gelatin powder is pulverized while being covered with the solvent, the gelatin powder does not dry or swell during the pulverization process. Thus, there is no inconvenience that the hydrophilicity is not hindered by the drying of the gelatin powder, and the gelatin powder becomes viscous with the swelling and the pulverization is hindered.

From these facts, it was possible to reliably and efficiently produce gelatin powder having a particle size smaller than 6 μm in a short time.

Further, since the finely ground gelatin is dispersed in a solvent in a suspended state, it can be easily and easily compounded with other paint components. It has the feature that the powder is uniformly dispersed.

Therefore, when a coating film is formed using a paint containing gelatin powder belonging to a range finer than 6 μm described above, these paints are formed in a state where the gelatin powder is uniformly dispersed in the coating film. A film is formed. For this reason, these coating films have the characteristics of absorbing and releasing moisture peculiar to gelatin, moderate contact resistance, and elasticity, and preventing electrostatic charge.

Further, since the particle size of the gelatin powder contained in this coating film was finer than 6 μm, it was made possible to form this coating film thinly. Particularly as a coating film, 0.00
A film having a thickness of 2 mm was prepared, and the mixed gelatin powder did not protrude or protrude from the surface of the formed coating film, so that the surface was good and smooth.

Further, since the gelatin powder is uniformly exposed on the surface of the coating film to be formed, the surface of the coating film is effectively provided with a hygroscopic property, and a good feel is brought about.

Furthermore, when the mixed gelatin powder is eluted from the surface of the coating film to be formed, countless fine pores of several microns are formed on the surface of the coating film. It has a characteristic that a moisture absorption / desorption function peculiar to the above, particularly a water / moisture permeable function is provided.

When the surface of the coating film formed above is subjected to a sanding treatment, the moisture absorption function and the water and moisture permeability function of the gelatin powder contained in the coating film and the good feel to the touch are further promoted. Is done.

The paint using the gelatin powder according to the present invention is used as a synthetic leather material for various kinds of personal accessories such as furniture or bags, or interior materials of automobiles, etc., because of the characteristic contents described above. It is used for various electronic devices and keyboards for these operators.

The above-mentioned paint having gelatin powder can be produced or used by the same method or method as that for forming a general coating film not containing gelatin powder. From this, the coating film using the crushed gelatin powder according to the present invention can be used as a means such as surface makeup for all commodities in daily life.

Claims (1)

(57) [Claims] 1. A powdered or granular gelatin is pulverized by wet pulverization using a solvent such as dimethylformamide or toluene as a medium, and the pulverized gelatin powder has a particle size smaller than 6 microns. A paint characterized in that ground gelatin powder contained in a solvent is part of a paint component.