JP2912658B2 - Modified synthetic resin composition, modified synthetic resin film, modified cloth, modified paint and modified adhesive - Google Patents

Description

The present invention relates to a modified synthetic resin composition, a modified synthetic resin film, a modified cloth, a modified paint, and a modified adhesive. A modified synthetic resin composition capable of improving various properties such as the feel and hygroscopicity of its surface when used for production, and a modified synthetic resin which is a product comprising such a modified synthetic resin composition The present invention relates to a resin film, a modified cloth, a modified paint, and a modified adhesive.

[Conventional technology]

When manufacturing synthetic leather or synthetic fiber fabric, in order to improve the surface properties, laminating a synthetic resin film for surface modification or applying a synthetic resin coating for surface modification is performed. . This is because ordinary synthetic leather and synthetic fiber fabrics have drawbacks such as inferior hygroscopicity, water absorbency or surface texture compared to natural materials, and in order to eliminate these drawbacks, Only the surface of the synthetic fiber or fabric is covered with another modified synthetic resin. For example, in order to improve the moisture permeability of nylon and polyester fabrics, surface treatment of these fabrics with a polyurethane resin has been performed.

However, this polyurethane resin has a problem that the feel of the surface is sticky and that the gloss of the surface is too strong to impair the feeling of the fabric. In addition, it was inferior in moisture absorption / release properties as compared with natural leather and cloth.

Therefore, it has been proposed to add fine powder of gelatin and collagen fibers (coarse collagen or cowhide powder) to polyurethane in order to improve the feel of the surface of the polyurethane resin and to further improve the moisture absorption / release properties. For example, it is disclosed in JP-A-63-99300. By the addition of such fine powder, the polyurethane resin has a good moisture absorption and desorption property, has a dry touch feeling, becomes a surface treatment agent having dew condensation suppression, high water vapor permeability and the like. It is said to be favorable for quality.

Japanese Patent Application Laid-Open No. 62-252459 discloses a technique for improving the hygroscopicity of a synthetic resin by adding glue, gelatin, collagen, casein, chitosan or the like to the synthetic resin.

In addition to the above, by adding leather powder or gelatin powder to the polyurethane resin or other synthetic resin,
Attempts have been made to improve the hygroscopicity, water absorption or surface feel. All of these methods attempt to utilize the hygroscopicity and water absorption of leather powder and gelatin powder.

[Problems to be solved by the invention]

However, among the above-mentioned prior arts, the method of adding leather powder to a synthetic resin has a drawback that the effect of improving the hygroscopicity and water absorption is not sufficiently improved. This is natural leather
By having a unique tissue structure, it shows hygroscopicity, water absorbency, surface texture, etc., but leather powder itself that is finely crushed leather is not very hygroscopic or water absorbent. However, even if such leather powder is added to the synthetic resin, the improvement in hygroscopicity and water absorption is not so much recognized.

In addition, in the method of adding gelatin to a synthetic resin, it is difficult to uniformly mix the gelatin with the synthetic resin. For example, when the gelatin is used for the surface reforming process, unevenness such as a feeling is easily generated or the synthetic resin is used. There are problems such as poor moldability during molding and inferior durability of the obtained synthetic resin product.

Conventionally, as a gelatin to be added to a synthetic resin, a dry gelatin powder or a gelatin powder which is swollen with water has been used. Of these, dried gelatin powder is obtained by drying gelatin and then finely pulverizing it.However, gelatin contains a certain amount of moisture even in a dry state, so it is difficult to finely pulverize, and the particle size is small. A small and uniform fine powder cannot be obtained. For this reason, the mixing with the synthetic resin is not performed uniformly, resulting in unevenness or impaired moldability. Gelatin powder swelled with water has the advantage of improved kneading properties with respect to the synthetic resin, but since the gelatin powder crushed in a dry state is swollen, the particle size is also large and varies, and the dry state Have the same disadvantages as the gelatin powder. In addition, when gelatin powder containing water is added to a polyurethane resin or the like which dislikes water, there is a problem that the resin is blocked or deteriorated, and there is a drawback that applicable synthetic resins are limited.

Further, since gelatin has a property of dissolving in water when the temperature is increased, gelatin is added to a synthetic resin and then heated in a processing step for manufacturing a synthetic resin product, or the manufactured synthetic resin product is heated. When exposed to a high-temperature and high-humidity environment during use, there is a problem that gelatin is dissolved from the synthetic resin. In particular, when used for synthetic resin fibers or fabrics, durability is required for washing or washing during the manufacturing process or during use. However, conventional gelatin-containing synthetic resins have the above-described problems. There was not enough durability.

Therefore, an object of the present invention is to improve the problem of the prior art of improving the hygroscopic property by adding a modifying material such as leather powder or gelatin to a synthetic resin as described above, and to improve the hygroscopic property and water absorbency. It is an object of the present invention to provide a modified synthetic resin composition which has a high effect of improving the resin composition, can uniformly mix the modified material with the synthetic resin, and has excellent durability of the manufactured synthetic resin product. Another object of the present invention is to provide various products made of such a modified synthetic resin composition.

[Means for solving the problem]

The modified synthetic resin composition according to the present invention, which solves the above problems, comprises a synthetic resin containing insolubilized gelatin having a particle size of 100 μm or less.

As the synthetic resin, any synthetic resin used as a material for manufacturing various products can be used. Specifically, in addition to the above-mentioned polyurethane, polystyrene, polypropylene, polyester, nylon, polyacrylate, polyethylene, vinyl chloride and the like can be mentioned. In particular, it can be suitably used for a synthetic resin which dislikes water, such as polyurethane, to which conventional gelatin could not be applied.

The insolubilized gelatin is a gelatin which originally has the property of being soluble in water, which is physically or chemically treated so as to be insoluble in water. As a gelatin material for producing insolubilized gelatin, alkali-treated gelatin, acid-treated gelatin and other ordinary gelatin can be used. As a method of insolubilizing these gelatin materials, a method of heating and curing at a high temperature of about 100 to 200 ° C. or irradiating infrared rays or far infrared rays,
Physical methods such as ultraviolet irradiation, and methods of treating with a tanning agent such as glutaraldehyde, formalin, hexamethylenetetramine, tannin, bright ban, aluminum sulfate, methylene diisocyanate, tolylene diisocyanate, hexamethylene diisocyanate, etc. There is a chemical method such as a method of treating with an isocyanate monomer. The insolubilized gelatin obtained by these insolubilization treatments hardly dissolves in water. In order to evaluate the water-insoluble property of the insolubilized gelatin, that is, the degree of insolubilization, for example, the elution component after immersing the insolubilized gelatin in warm water or boiling water for a certain period of time may be measured. Specifically, the insolubilized gelatin used in the present invention is preferably one that does not dissolve in hot water at 60 ° C., more preferably,
A material that does not dissolve even when immersed in boiling water for several minutes is used.

If the insolubilized gelatin is colored with various dyes, a colored insolubilized gelatin can be obtained. In order to obtain a colored insolubilized gelatin, gelatin before insolubilizing may be colored.

The insolubilized gelatin is added to the synthetic resin in the form of a fine powder having a particle size of 100 μm or less. In order to obtain a fine powder of the insolubilized gelatin, the insolubilized gelatin obtained by the above-described insolubilization treatment may be crushed by ordinary crushing means. After the gelatin which has been ground in advance is insolubilized, it can be further ground to obtain a fine powder. The smaller the particle size of the insolubilized gelatin, the better the function and effect of the present invention can be exhibited.
If the particle size exceeds 100 μm, it cannot be uniformly mixed with the synthetic resin, and the surface properties of the synthetic resin product will be uneven or uneven.
Variation occurs, strength is reduced, and the modifying effect is not sufficiently exhibited. Preferably, those having a particle size of 50 μm or less are used.

To mix the insolubilized gelatin with the synthetic resin, ordinary mixing and stirring means and the like are used. The insolubilized gelatin is added to the synthetic resin in a dry state. When heat molding synthetic resin, after heating and kneading synthetic resin and insolubilized gelatin,
What is necessary is just to shape | mold by a normal heat molding method. Further, when a synthetic resin film diluted with a solvent is thinly applied and then the solvent is evaporated to produce a synthetic resin film, the solvent or the synthetic resin diluted with the solvent may be mixed with insolubilized gelatin at room temperature. The content of the insolubilized gelatin relative to the synthetic resin varies depending on the intended product or application, but is usually about 0.1 to 40.
%, Preferably in the range of 1 to 30% by weight.

Any additive other than insolubilized gelatin can be added to the synthetic resin depending on the intended product or use. Specifically, they are the same as additives in ordinary synthetic resins, such as a coloring agent, a plasticizer, a curing agent, a stabilizer, a lubricant, and a foaming agent.

Various products can be produced from the modified synthetic resin composition containing insolubilized gelatin described above by a molding method for a general synthetic resin. Further, it can be used for coating a synthetic resin molded article, fiber, cloth, synthetic leather and other articles to improve the surface properties thereof.
A specific coating method or means is performed in the same manner as in a general surface modification coating technique. When coating a nonwoven fabric or a woven fabric, not only the surface of the fabric but also the inside can be impregnated to coat the individual fibers themselves. Various surface treatments can be applied to the coated modified synthetic resin layer. For example, sanding or leather graining can be applied to the modified synthetic resin layer coated on the surface of the synthetic leather.

From the modified synthetic resin composition according to the present invention, various products as described below can be produced.

First, a modified synthetic resin film made of the modified synthetic resin composition can be produced. As a method for forming or producing the modified synthetic resin film, the same method as that for a general synthetic resin film is employed. In particular, a method in which a thin film of the modified synthetic resin composition adjusted to an appropriate concentration with a solvent is applied, and then the solvent is evaporated to form a film is preferable. The modified synthetic resin film is
As such, it can be used as a film material with excellent hygroscopicity for various uses, and this modified synthetic resin film can be laminated on the surface of synthetic resin molded products, cloth, synthetic leather, etc., and the surface processing of those products Can be used for

A cloth made of a nonwoven fabric or a woven fabric is immersed in the modified synthetic resin composition to impregnate not only the surface but also the entire interior of the cloth with the modified synthetic resin composition, whereby a modified cloth is obtained. As the fiber material constituting the non-woven fabric or the woven fabric, a material composed of ordinary synthetic fibers or the like can be used.

If a coating resin is used as the synthetic resin containing the insolubilized gelatin, a modified coating can be obtained. In addition to the insolubilized gelatin, a coloring agent and other general paint additives are added to the paint resin. An insolubilized gelatin may be added to a resin coating that has been manufactured in advance.

If an adhesive resin is used as the synthetic resin containing the insolubilized gelatin, a modified adhesive can be obtained. To the resin for the adhesive, in addition to insolubilized gelatin, various usual additives for adhesives are added. Insolubilized gelatin may be added to a resin adhesive manufactured in advance.

[Action]

The insolubilized gelatin is a gelatin that is originally soluble or swells easily in water but is insoluble in water. Therefore, compared to mere dry gelatin, it is hard and has good crushability such as low viscoelasticity.When insolubilized gelatin is crushed, the particle size is much smaller than conventional gelatin, and the particle size distribution is uniform. A fine powder is obtained. Insolubilized gelatin is insoluble in water, but has a hydrophilic group unique to the gelatin structure, so its hygroscopicity and water-absorbing modifying effect on synthetic resin are as good as ordinary gelatin. .

Therefore, if such a fine powder of the insolubilized gelatin is mixed with the synthetic resin, it is evenly mixed with the synthetic resin, and the resulting synthetic resin exhibits the effect of improving the hygroscopicity and water absorption by the insoluble gelatin. Is done. In particular, since the insolubilized gelatin having a particle size of 100 μm or less is used, it is more uniformly mixed with the synthetic resin, and the resulting synthetic resin product has irregularities due to the modifier, unevenness of the surface properties and the like. There is no need to worry about variations.

When the finely powdered insolubilized gelatin is uniformly mixed in the synthetic resin, the influence on the strength and durability of the synthetic resin is less than in the case where conventional gelatin having a large particle size is non-uniformly contained. This is because the strength and durability are lower than the case of using only synthetic resin when mixing either ordinary gelatin or insolubilized gelatin, but conventional gelatin has a large particle size and its distribution is uneven. Therefore, while the strength and durability of the entire synthetic resin are greatly impaired, the insolubilized gelatin in the present invention has a small particle size, and has a uniform particle size distribution, and is uniformly mixed in the synthetic resin.
It does not significantly reduce the strength or durability of the synthetic resin. For example, if the strength of a 10 μm film made of a synthetic resin without a modifier added alone is 500 kg / cm ² , if the same film is made of a modified synthetic resin containing 10% gelatin having a particle size of 300 μm, while strength is lowered until 200 kg / cm ^2, when manufacturing the same film with a synthetic resin containing the insolubilized gelatin particle size 100 [mu] m, the strength is 350k
g / cm ² . Therefore, if the strength is the same, the insolubilized gelatin can be contained in a larger amount in the synthetic resin than the conventional gelatin, and the modifying action such as hygroscopicity can be further improved.

Since the insolubilized gelatin does not contain water, mixing with conventional gelatin swelled with water allows it to be mixed well with water-hindered synthetic resins such as polyurethane, which have caused problems such as blocking.

Products comprising the modified synthetic resin composition containing insolubilized gelatin have higher durability against hot water treatment than those containing conventional gelatin. This is due to the fact that hot water treatment may be performed by washing or washing during the manufacturing process or use of a product made of modified synthetic resin.However, with conventional gelatin, the product is eluted from the synthetic resin by hot water treatment. On the other hand, the insolubilized gelatin in the present invention does not dissolve even in hot water.

〔Example〕

First, an insolubilized gelatin fine powder was produced as follows.

Among the following production examples, production examples 1.1 to 1.3 are cases where a physical insolubilization treatment by heating is performed, and production example 2.1 is a case where a chemical insolubilization treatment with an insolubilizing agent is performed.

-Production example 1.1-Alkaline 200 bloom gelatin (particle size 250μm) 1000g
Was kept in an atmosphere at 150 to 180 ° C. for 1 hour to make it insoluble. The obtained insolubilized gelatin is crushed by a turbo mill,
950 g of insolubilized gelatin fine powder A-1 having a particle size of 45 μm (300 mesh pass) was obtained.

-Production Example 1.2-Alkaline 100 bloom gelatin (particle size 250 μm)
It was kept in an atmosphere at ~ 180 ° C for 1 hour to make it insoluble. The insolubilized gelatin obtained was adjusted to pH 2.0 with acetic acid.
% Red No. 2 solution, kept in boiling water for 10 minutes, washed well with water, dehydrated, and dried at 100 ° C. to obtain a colored insolubilized gelatin. Since insolubilized gelatin does not dissolve even in boiling water, it is possible to color in this way. This colored insolubilized gelatin was pulverized with a turbo mill to obtain a red insolubilized gelatin fine powder A-2 having a particle size of 45 μm or less (300 mesh pass).

-Production Example 1.3-100 g of acid-treated gelatin and 20 g of carbon black are put into water, dissolved by heating, and dried by a conventional method.
This is pulverized by a turbo mill to give a black gelatin powder (particle size 25
0 μm). The obtained black gelatin powder was mixed with 150 to 18
The mixture was kept in an atmosphere at 0 ° C. for 1 hour for insolubilization to obtain black insolubilized gelatin. This was pulverized with a turbo mill to obtain a black insolubilized gelatin fine powder A-3 having a particle size of 45 μm or less (300 mesh pass).

-Production example 2.1-0.025 part of 10% glutaraldehyde is added to 100 parts of a 5% aqueous gelatin solution (solution temperature 60 ° C), and the mixture is adjusted to pH 8 with a 3% sodium hydroxide solution while stirring to be uniform. Then, an insolubilizing hardening reaction was performed. The obtained reaction solution was cooled to 40 ° C and dried under reduced pressure at 35 ° C for 24 hours to obtain insoluble gelatin. The obtained insolubilized gelatin was pulverized by a turbo mill in the same manner as in the above Production Example to obtain insolubilized gelatin fine powder B-1 having a particle size of 45 μm or less (300 mesh pass).

(Examples 3.1 to 3.3, Comparative Examples 3.1 to 3.2) Synthetic resin films of Examples and Comparative Examples were produced as follows.

First, a modified synthetic resin composition was prepared by mixing the insolubilized gelatin fine powder (modifier) of A-1 to A-3 with a synthetic resin. In addition, a modified synthetic resin composition obtained by mixing ordinary gelatin (modifying material) with a synthetic resin and a synthetic resin composition containing no gelatin were also prepared.

Table 1 below shows the formulations of these synthetic resin compositions. In the table, Comparative Example 3.1 is a case where conventional ordinary gelatin C-1 (used without insolubilizing the alkali 100 bloom gelatin) was used in place of insolubilized gelatin, and Comparative Example 3.2 was a case where synthetic resin alone was used. Is the case.

In the above table, MEK represents methyl ethyl ketone, which is used as an organic solvent for dissolving the urethane resin agent and adjusting the viscosity.

In the formulation of each Example and Comparative Example, each material was stirred and mixed to form a uniform mixture, and after defoaming, coated on a release paper with a thickness of 100 μm and dried at 150 to 170 ° C. for 1 minute. And a film was manufactured. These films were produced. The test described below was performed using this film.

(A) Hygroscopicity test A test film of 5 cm square was prepared, dried at 60 ° C for 1 hour, and then dried under an atmosphere of relative humidity of 90% (20 ° C).
Hold for 0, 45 and 60 minutes. After the test, the weight of each film was measured. A film with higher hygroscopicity absorbs moisture and increases its weight.

(B) Moisture release test In the above-mentioned moisture absorption test, immediately after moisture absorption was performed for 60 minutes, the sample was immediately kept in an atmosphere of a relative humidity of 40% (20 ° C) for 15, 30, 45 and 60 minutes. After the test, the weight of each film was measured. The better the moisture release of the film, the more water is released and the weight is reduced.

(C) Hand sensory test Ten panelists evaluated the feeling of touching the test film as either "slip feeling" or "stickiness".

(D) Durability test A 5 cm square test film was kept in hot water at 60 ° C for 20 minutes, dried at 60 ° C for 1 hour, and subjected to so-called hot water treatment. The weight was measured before and after the hot water treatment, and the elution amount of the insolubilized gelatin or gelatin was measured from the change in weight. In addition, regarding the moisture absorption test, the moisture release test, and the feeling sensory test, a test after hot water treatment was performed, and a change in characteristics was observed.

(E) Dyeing test 1 An uncolored test film was adjusted to pH 2.0 with acetic acid.
% Red No. 2 solution, kept in boiling water for 10 minutes, washed well with water, and dried at 60 ° C. The obtained colored test film was subjected to the same hot water treatment as described above, the appearance color before and after the hot water treatment was observed, and the outflow state of the dye due to the hot water treatment was evaluated. Incidentally, for the test film containing pre-colored insolubilized gelatin, the above-mentioned dyeing step is omitted,
The appearance color before and after the hot water treatment was observed.

The results of each test are shown in Tables 2 to 14 described below.

As a result of the above test, Comparative Example 3.1 in which conventional gelatin was added and Example 3.1 in which insolubilized gelatin was added were all effective in improving moisture absorption / release properties, as compared to Comparative Example 3.2 showing the case of urethane resin alone. You can see that.

Comparing the above test results with Tables 2 and 3,
In Comparative Example 3.1 using the conventional gelatin, the hygroscopicity was extremely reduced by performing the hot water treatment, whereas in Example 3.1 according to the present invention, even when the hot water treatment was performed, the hygroscopicity was reduced. It can be seen that the property hardly decreases. In Comparative Example 3.1, the weight was greatly reduced because the gelatin contained in the urethane resin had been eluted.

As a result of the above test, Examples 3.1 to 3.3 and Comparative Example 3.1
Have the effect of improving the feel of the urethane resin. However, in Comparative Example 3.1, when the hydrothermal treatment was performed, the feeling improving effect was lost, whereas in Examples 3.1 to 3.3, the hydrothermal treatment was not affected at all, and the modified synthesis according to the present invention was not affected. It is understood that the resin film has high durability against hot water treatment.

As a result of the above test, it can be seen that, as in Examples 3.1 to 3.3 and Comparative Example 3.1, the addition of gelatin or insolubilized gelatin improves the dyeability of the urethane resin.
However, in Comparative Example 3.1 using conventional gelatin, the dye was dropped off by the hot water treatment, whereas in Examples 3.1 to 3.3 according to the present invention, there was no change in the dyeing and the durability was excellent. It turns out to be something. Example 3.
Colorless film dyed as in 1, or
It can be seen that in any of the films made of the synthetic resin composition to which the pre-colored insolubilized gelatin was added as in Examples 3.2 and 3.3, good dyeing durability can be exhibited.

As a result of the above test, when the hydrothermal treatment was performed, the weight changed significantly in Comparative Example 3.1, but not so much in Example 3.1. The change in the weight of the test film occurs due to the elution of the gelatin or the insolubilized gelatin contained in the polyurethane resin. The weight ratio of the test film is composed of 85.7% of polyurethane resin and 14.3% of gelatin or insolubilized gelatin. Therefore, in Comparative Example 3.1, most of the gelatin in the polyurethane resin had been eluted, whereas Example 3.
In 1, it can be seen that most of the insolubilized gelatin remains.

(Example 4.1, Comparative Example 4.1) First, a resin solution was prepared according to the composition shown in Table 10 below, and a cloth made of a nonwoven fabric and a woven fabric was immersed in these resin solutions. Drying at 2 ° C. for 2 minutes produced a modified cloth.

The obtained modified cloth was subjected to the same moisture absorption test and hand feeling test as described above. In addition, as hot water treatment, at 60 ℃
The test conditions were the same as above, except that they were immersed in warm water for 10 minutes. The test results are shown in Tables 11 and 12.

As a result of the above test, the modified cloth impregnated with the resin liquid (modified synthetic resin composition) according to the present invention has improved hygroscopicity and feel, and these properties are lost by hot water treatment. It was proved that there was no.

(Examples 5.1 to 5.2, Comparative Examples 5.1 to 5.2) Coatings were produced with the formulations shown in Table 13 below.

After coating and drying each paint manufactured by the above-mentioned formulation in a usual process, the feeling and appearance of the painted surface were observed, and the evaluation results are shown in Table 14. As a drying step, Example 5.1 and Comparative Example 5.1 were dried at room temperature,
In Comparative Example 5.2, baking was performed at 140 to 160 ° C.

As a result of the above test, the painted surfaces of Examples 5.1 and 5.2 had a unique suede-like or matte (matte) soft leather-like finish which cannot be obtained with the paint alone.

(Example 6.1, Comparative Example 6.1) An adhesive having the following composition was produced.

<Example 6.1> Polyether urethane prepolymer (viscosity 30,000 cps / 25 ° C, concentration 50%) 100 parts by weight Crosslinking agent 10 〃 Accelerator 2 〃 Insolubilized gelatin (B-1) 10 〃 <Comparative Example 6.1> The composition of Example 6.1 except for the insolubilized gelatin.

The modified synthetic resin composition of Example 3.1 was coated on release paper, dried at 120 ° C., and then coated with the adhesive of Example 6.1 or Comparative Example 6.1. The sheet with the adhesive was stuck to a nonwoven fabric and heated to 120 ° C. to cure the adhesive. After aging for 3 days at room temperature, the release paper was peeled off to produce a surface-modified nonwoven fabric having a surface on which a modified synthetic resin composition layer was laminated. When the adhesiveness of the surface-modified nonwoven fabric using the adhesive of Example 6.1 and Comparative Example 6.1 was compared, there was no significant difference, and the adhesiveness did not decrease even when insolubilized gelatin was added as in Example 6.1. I understand. When comparing the moisture absorption / release properties, Example 6.1 was far superior to Comparative Example 6.1. This means that, when the modified synthetic resin composition is laminated on the surface of the nonwoven fabric to improve the moisture absorption and release properties, the adhesive for bonding the nonwoven fabric and the modified synthetic resin composition also relates to the present invention. It has been demonstrated that the use of the modified adhesive can exhibit more excellent moisture absorption / release performance.

〔The invention's effect〕

As described above, the modified synthetic resin composition according to the present invention contains an insolubilized gelatin having a particle size of 100 μm or less, so that it is much more hygroscopic or absorbable than a conventional leather powder. As the water absorption increases,
Compared with conventional gelatin containing gelatin, the surface feel or durability is excellent. In addition, excellent performance can be exhibited in dew condensation preventing properties, dyeing properties, antistatic properties, and the like.

Compared with ordinary gelatin, insolubilized gelatin allows uniform and fine powder to be obtained efficiently and economically, so that it can be uniformly mixed with the synthetic resin composition, and the surface of the product made of the synthetic resin composition is Excellent texture without unevenness and unevenness can be obtained. Further, since the strength and durability of the product are not reduced, a product excellent in these performances can be obtained.

Since insolubilized gelatin can be added to synthetic resins that dislike water, it is easy to manufacture modified synthetic resin compositions composed of polyurethane resin, etc., which were difficult to produce conventionally, and to improve the performance of expanded synthetic resin products and expand applications. Can contribute to

Since insolubilized gelatin is resistant to water, especially high-temperature hot water,
High durability against hot water treatment such as washing and washing during the production process or use of the modified synthetic resin product, the range of production conditions and use environment of the modified synthetic resin product is expanded, and the moisture absorption and desorption properties are excellent. Performance can be exhibited well over a long period of time.

The modified synthetic resin composition, a modified synthetic resin film, a modified cloth, a modified paint, and a modified adhesive, which are products made of the above-described modified synthetic resin composition, are produced by the above-described excellent effects of the modified synthetic resin composition. In addition, excellent quality performance suitable for each application can be exhibited.

For example, the modified cloth has a feeling and properties very close to those of natural leather as a material constituting synthetic leather and artificial leather, and is a leather material excellent in economy. The modified paint is
If used for finishing the interior wall surface, it is possible to form a finished surface having excellent moisture absorption / desorption properties and dew condensation prevention effect. When the modified adhesive is used for bonding a product made of the modified synthetic resin film or the modified cloth, the final product as a whole is adsorbed even if the adhesive layer is interposed. It has excellent performance in the point. Further, the same effect as described above can be obtained even when used for bonding wood or other natural hygroscopic materials.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI D06M 15/15 D06M 15/15 15/19 15/19 (56) References JP-A-1-294772 (JP, A) JP Hei 1-294740 (JP, A) JP-A-63-154765 (JP, A) JP-A-63-99300 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) C08L 1 / 00-101/14 C08J 5/18 C06M 15/00-15/693 C09D 101/00-201/10 C09J 101/00-201/10

Claims (5)

(57) [Claims] 1. A modified synthetic resin composition comprising a synthetic resin containing insoluble gelatin having a particle size of 100 μm or less. 2. A modified synthetic resin film comprising the modified synthetic resin composition according to claim 1. 3. A modified cloth obtained by impregnating the modified synthetic resin composition according to claim 1 into a cloth made of non-woven fabric or woven fabric. 4. A modified paint containing the modified synthetic resin composition according to claim 1. 5. A modified adhesive comprising the modified synthetic resin composition according to claim 1.