JPH03237165A - Modified synthetic resin composition, modified synthetic resin film, modified cloth, modified coating and modified adhesive - Google Patents

Abstract

PURPOSE:To provide a modified synthetic resin composition capable of giving modified films, modified cloths, modified coatings, modified adhesives, etc., improved in the surface natures thereof such as touch or hygroscopicity by compounding a synthetic resin with an insoluble gelatin having particle diameters of <= a specific value. CONSTITUTION:(A) A synthetic resin, especially a water-heating synthetic resin such as a polyurethane is compound with (B) 0.1-40wt.%, preferably 1-30wt.%, of a fine powdery insoluble gelatin to provide a modified synthetic resin composition, the fine powdery insoluble gelatin being prepared by insolubilizing a water- soluble gelatin (e.g. alkali-treated gelatin or acid-treated gelatin) by a physical method such as the heating of the gelatin at a temperature of 100-200 deg.C or the irradiation of the gelatin with UV rays or by a chemical method such as the treating of the gelatin with an insolubilizing agent (e.g. glutar aldehyde) and subsequently grinding the insoluble gelatin into particle sizes of <=100mum, preferably <=50mum. A modified film, modified cloth, modified coating or modified adhesive prepared from the composition.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a modified synthetic resin composition, a modified synthetic resin film, a modified cloth, a modified paint, and a modified adhesive. Modified synthetic resin compositions that can improve various properties such as surface texture and hygroscopicity when used in manufacturing, and modified synthetic resin compositions that are products made from such modified synthetic resin compositions. This invention relates to resin films, modified fabrics, modified paints, and modified adhesives.

[Conventional technology]

When manufacturing synthetic leather and synthetic fiber fabrics, in order to improve their surface properties, synthetic resin films for surface modification are laminated or synthetic resin coatings are applied for surface modification. . This is because ordinary synthetic leather and synthetic fiber fabrics have disadvantages such as inferior moisture absorption, water absorption, and surface texture compared to natural materials, and in order to eliminate these disadvantages, synthetic leather and 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, these fabrics are surface-treated with polyurethane resin.However, this polyurethane resin has a sticky feel on the surface and It had the problem that the gloss was too strong, impairing the texture of the fabric, and it was also inferior in terms of moisture absorption and desorption compared to natural leather and fabric.

Therefore, we improved the surface texture of the polyurethane resin,
In order to further improve moisture absorption and desorption properties, it has been proposed to add fine powders of gelatin and collagen fibers (crude collagen or cowhide powder) to polyurethane, for example,
It is disclosed in Japanese Patent Application Laid-open No. 63-99300. By adding such fine powder, polyurethane resin becomes a surface treatment agent that has good moisture absorption and desorption properties, has a dry touch feeling, suppresses dew condensation, and has high water vapor permeability, etc., and can be used to improve the surface of nylon fabrics, etc. It is said to be of good quality.

In addition, a technique for improving the moisture absorption and desorption properties of synthetic resins by adding glue, gelatin, collagen, casein, chitosan, etc. to synthetic resins was disclosed in Japanese Patent Laid-Open No. 62-252459.
It is disclosed in the publication No.

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

(Problems to be Solved by the Invention) However, among the above-mentioned prior art methods, the method of adding leather powder to synthetic resin has the drawback that the effect of improving hygroscopicity and water absorption is not sufficiently improved. Natural leather exhibits hygroscopicity, water absorbency, and surface texture due to its unique tissue structure, but leather powder itself, which is made by finely pulverizing leather, is not as hygroscopic or water absorbent. Even if such leather powder is added to a synthetic resin, there is not much improvement in hygroscopicity or water absorption.

In addition, with the method of adding gelatin to synthetic resin, it is difficult to mix gelatin uniformly into synthetic resin. Poor formability when forming the bottom shape,
There are problems such as poor durability of the resulting synthetic resin products.

This is conventionally used as gelatin added to synthetic resins.
It has been used as a dry gelatin powder or as a gelatin powder swollen with water. Among these, dry gelatin powder is obtained by drying gelatin and then finely pulverizing it, but since gelatin contains a certain amount of water even in its dry state, it is difficult to pulverize it and the particle size is small. It is not possible to obtain small and uniform fine powder. Therefore, mixing with the synthetic resin is not uniformly performed, resulting in unevenness and inhibiting moldability. Gelatin powder swollen with water has the advantage of being better kneaded with synthetic resins, but since it is swollen gelatin powder that has been ground in a dry state, the particle size also varies widely, and the dry state However, if gelatin powder containing water is added to polyurethane resin, etc., which dislikes moisture, the resin may block or deteriorate in quality, making it difficult to find synthetic resins that can be used. The disadvantage is that it is limited.

Furthermore, gelatin has the property of dissolving in water when the temperature rises, so after gelatin is added to synthetic resin, it may be heated during the processing process to manufacture synthetic resin products, or the manufactured synthetic resin products may be heated. There is a problem in that gelatin dissolves from the synthetic resin when exposed to high temperature and high humidity environments during use. In particular, when used in synthetic resin fibers and fabrics, durability against washing or washing during the manufacturing process or during use is required, but conventional synthetic resins containing gelatin have the problems mentioned above. It wasn't durable enough.

Therefore, the object of this invention is to improve the problems of the conventional technology, which involves adding modifying materials such as leather powder and gelatin to synthetic resins to improve their hygroscopicity, and to improve their hygroscopicity and water absorption. It is an object of the present invention to provide a modified synthetic resin composition which has a high improvement effect, allows a modifying material to be mixed uniformly with a synthetic resin, and has excellent durability of a manufactured synthetic resin product. Another object of the present invention is to provide various products made of such modified synthetic resin compositions.

[Means to solve the problem]

A modified platform resin composition according to the present invention that solves the above problems is made by incorporating insolubilized gelatin having a particle size of 100 μm or less into a synthetic resin.

As the synthetic resin, any synthetic resin used as a material for manufacturing various products can be used. Specifically, in addition to the polyurethane, polystyrene, polypropylene, polyester, nylon, polyacrylate, polyethylene, vinyl chloride, and the like can be mentioned. especially,
It can be suitably used for water-averse synthetic resins such as polyurethane, to which conventional gelatin cannot be applied.

Insolubilized gelatin is gelatin that originally has the property of being soluble in water, but is made so that it does not dissolve in water by physically or chemically treating it. As the gelatin material for producing insolubilized gelatin, alkali-treated gelatin, acid-treated gelatin, and other ordinary gelatin can be used. Methods to insolubilize these gelatin materials include physical properties such as heating at a high temperature of approximately 100 to 200°C, irradiation with infrared rays or far infrared rays, and irradiation with ultraviolet rays. taraldehyde, formalin, hexamethylenetetramine,
Chemical methods include treatment with leather tanning agents such as tannin, light bread, and aluminum sulfate, and treatment with isocyanate monomers such as methylene diisocyanate, tridene diisocyanate, and hexamethylene diisocyanate. Insolubilized gelatin obtained by these insolubilization treatments hardly dissolves in water. To evaluate the water-insoluble property of insolubilized gelatin, that is, the degree of insolubilization, for example, the eluted components may be measured after immersing the insolubilized gelatin in warm water or boiling water for a certain period of time. in particular,
The insolubilized gelatin used in this invention is preferably one that does not dissolve in hot water at 60°C, and more preferably one that does not dissolve even when immersed in boiling water for several minutes.

Colored insolubilized gelatin can be obtained by coloring insolubilized gelatin with various dyes. In order to obtain colored insolubilized gelatin, gelatin may be colored before being insolubilized.

The insolubilized gelatin is added to the synthetic resin in the form of a fine powder with a particle size of 100 m or less. In order to obtain a fine powder of insolubilized gelatin, the insolubilized gelatin obtained by the above-described insolubilization treatment may be pulverized using a conventional pulverizing means. It is also possible to obtain a fine powder by insolubilizing gelatin that has been ground in advance and then grinding it further. The smaller the particle size of the insolubilized gelatin, the better the effect of the present invention can be exhibited. If the particle size exceeds 10 On, it will not be possible to mix uniformly into the synthetic resin, and the surface properties of the synthetic resin product will become uneven, uneven, and uneven, the strength will decrease, and the modification effect will not be fully demonstrated. . Preferably, particles with a particle size of 50 ann or less are used.

To mix the insolubilized gelatin with the synthetic resin, a conventional mixing and stirring means or the like is used. The insolubilized gelatin is added to the synthetic resin in a dry state. When thermoforming a synthetic resin, the synthetic resin and insolubilized gelatin may be heated and kneaded, and then shaped into a bottom shape using a normal thermoforming method. Furthermore, when a synthetic resin film is produced by thinly coating a synthetic resin diluted with a solvent and then evaporating the solvent, insolubilized gelatin may be mixed with the solvent or the synthetic resin diluted with a solvent at room temperature. The content of insolubilized gelatin in the synthetic resin varies depending on the intended product and use, but is usually about 0.1 to 4.
It can be used in an amount of 0% by weight, preferably 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, the additives include colorants, plasticizers, curing agents, stabilizers, lubricants, foaming agents, and the like, which are the same as additives in ordinary synthetic resins.

The above-described modified synthetic resin composition containing insolubilized gelatin can be used to manufacture various products by a conventional molding method for synthetic resins, and can also be used to produce synthetic resin molded products, fibers, fabrics, Hewei leather, etc. It can be used to coat other articles to improve their surface properties. The specific coating method or means is carried out in the same manner as a conventional surface modification coating technique. When coating a cloth made of non-woven fabric or woven fabric, it is possible to impregnate not only the surface of the cloth but also the inside of the cloth to coat each individual fiber itself. Various surface treatments can be applied to the coated modified synthetic resin layer. For example, a modified synthetic resin layer coated on the surface of synthetic leather can be subjected to sanding, base graining, or the like.

Various products as described below can be manufactured from the modified synthetic resin composition according to the present invention.

First, a modified synthetic resin film made of a modified synthetic resin composition can be produced. The method for molding or manufacturing the modified synthetic resin film is the same as that for ordinary synthetic resin films. Particularly preferred is a method in which a modified synthetic resin composition adjusted to an appropriate concentration with a solvent is applied thinly, and then the solvent is evaporated to form a film. The modified synthetic resin film itself can be used for various purposes as a film material with excellent hygroscopic properties, and can also be used by laminating it on the surface of synthetic resin molded products, cloth, synthetic leather, etc. , can be used for surface treatment of those products.

A cloth made of nonwoven fabric or woven fabric is dipped in the modified synthetic resin composition to modify not only the surface but also the entire interior of the cloth t7.
A modified fabric can be obtained by impregnating it with a resin composite. The fiber material constituting the non-woven fabric or fabric may be made of ordinary synthetic fibers or the like.

If a paint resin is used as the synthetic resin containing the insolubilized gelatin, a modified paint can be obtained. In addition to insolubilized gelatin, the paint resin contains colorants and various other usual paint additives. Insolubilized gelatin may be added to a pre-produced resin coating.

If an adhesive resin is used as the synthetic resin containing the insolubilized gelatin, a modified adhesive can be obtained. In addition to insolubilized gelatin, the adhesive resin contains various usual paint additives. Insolubilized gelatin may be added to a pre-produced resin coating.

[For production]

Insolubilized gelatin is gelatin that originally dissolves or swells easily in water, but is made insoluble in water. Therefore, compared to simply dry gelatin, it is harder and has less viscoelasticity, making it easier to crush.When crushed, non-40% gelatin has a much smaller particle size than conventional gelatin, and has a narrower particle size distribution. A uniform fine powder is obtained. Although insolubilized gelatin is no longer soluble in water, the hydrophilic groups unique to the gelatin structure remain, so its ability to modify the hygroscopicity and water absorption of synthetic resins is as good as that of regular gelatin. .

Therefore, if such finely powdered insolubilized gelatin is mixed with a synthetic resin, it will be mixed evenly and uniformly into the synthetic resin, and the resulting synthetic resin will exhibit the hygroscopic and water absorption improving effects of the insolubilized gelatin. be done. In particular, since we use insolubilized gelatin with a particle size of 100 μ or less, it is mixed more uniformly with the synthetic resin, and the resulting synthetic resin product may have unevenness due to the modifier or uneven surface texture. There is no need to worry about variations.

When finely powdered insolubilized gelatin is uniformly mixed in a synthetic resin, it has less effect on the strength and durability of the synthetic resin than when conventional gelatin with a large particle size is contained unevenly. This is because the strength and durability of gelatin is lower than that of synthetic resin alone, whether it is mixed with regular gelatin or insolubilized gelatin, but conventional gelatin has large particle sizes and uneven distribution. However, the insolubilized gelatin used in this invention has a small particle size and a uniform particle size distribution, and is uniformly mixed into the synthetic resin, so it can be mixed into the synthetic resin. This does not significantly reduce strength or durability.

For example, if the strength of a lOμ film made from synthetic resin alone without any modifier added is 500 kg/cd,
When the same film is made from a modified synthetic resin containing 10% gelatin with a particle size of 300 nm, the strength is 200 kg/
ad, while the same film has a particle size of 10
When manufactured from synthetic resin containing 0 Ha insolubilized gelatin, the strength decreases only to 350 kg/-. Therefore, as long as the same strength is acceptable, insolubilized gelatin can be contained in a larger amount in a synthetic resin than conventional gelatin, and its modifying effects such as hygroscopicity can be further improved.

Since insolubilized gelatin does not contain water, it can be mixed well with water-averse synthetic resins such as polyurethane, which have caused problems such as blocking when mixed with conventional gelatin swollen with water.

Products made of modified synthetic resin compositions containing insolubilized gelatin have higher durability against hot water treatment than those containing conventional gelatin. This is because products made from modified synthetic resins are sometimes treated with hot water during washing or washing during the manufacturing process or during use, but with conventional gelatin, they may be eluted from the synthetic resin during hot water treatment. In contrast, the insolubilized gelatin of the present invention does not dissolve even in hot water.

〔Example〕

(2) Production of insolubilized gelatin fine powder Among the following examples, Examples 1.1 to 1.3 are cases where physical insolubilization treatment by heating was performed, and Example 2.
1 is a case where chemical insolubilization treatment was performed using an insolubilization treatment agent.

Example 1.1 = Alkali 200 bloom gelatin (particle size 250n) 10
00g was held in an atmosphere of 150 to 180°C for 1 hour to insolubilize it. The obtained insolubilized gelatin was pulverized with a turbo mill to obtain 950 parts of insolubilized gelatin fine powder AI having a particle size of 45 μm (300 mesosyupas).

Example 1.2 Alkali 100 bloom gelatin (particle size 250n)
It was held in an atmosphere of 50 to 180°C for 1 hour to insolubilize it. One part of the obtained insolubilized gelatin was put into a red No. 2 solution adjusted to pH 2.0 with acetic acid, kept in boiling water for 10 minutes, thoroughly washed with water, dehydrated, and heated at 100°C.
The gelatin was dried to obtain colored insolubilized gelatin. Insolubilized gelatin does not dissolve even in boiling water, so
Coloring can be done using this method. This colored insolubilized gelatin was pulverized with a turbo mill, and the particle size was 45 m (
Red insolubilized gelatin fine powder A-
I got 2.

Example 1.3 100 g of acid-treated gelatin and 20 g of carbon blank are put into water, heated and dissolved, and then dried by a conventional method. This was pulverized with a turbo mill to obtain black gelatin powder (particle size 250μ). The obtained black gelatin powder is 1
The gelatin was insolubilized by holding it in an atmosphere of 50 to 180° C. for 1 hour to obtain a black insolubilized gelatin. This was pulverized with a turbo mill to obtain fine black insolubilized gelatin powder A-3 having a particle size of 45 m (300 mesh baths).

Example 2.1 5% gelatin in water/& (liquid temperature 60°C) 10% in 100 parts
0.025 part of geltaraldehyde was added, and while stirring to achieve uniformity, the pH was adjusted to 8 with a 3% sodium hydroxide solution to carry out an insolubilization hardening reaction. The obtained reaction solution was cooled to 40°C and dried under reduced pressure at 35°C overnight to obtain insolubilized gelatin. The obtained insolubilized gelatin was pulverized with a turbo mill in the same manner as in the above example.
Insolubilized gelatin fine powder B-1 having a particle size of 45 nm (300 mensius) was obtained.

■ Production of modified synthetic resin film A modified synthetic resin composition is produced by mixing the insolubilized gelatin fine powder of A-1-A-3 with a synthetic resin, and a film is produced from this modified base resin composite acid. It was molded and its properties were evaluated in various tests.

Table 1 below shows the formulation of the modified base resin composition. In the table, Comparative Example 1 is a case where conventional ordinary gelatin C-1 (used without insolubilizing the alkaline 100 bloom gelatin) was used instead of insolubilized gelatin.
Comparative Example 2 is a case where the Gokai resin is used alone.

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.

With the formulation of each example and comparative example, each material was stirred and mixed to make a homogeneous mixture, and after defoaming, it was coated on release paper to a thickness of 10 On, and dried at 50 to 170°C for 1 minute. A film of the modified synthetic resin composition was produced. The following tests were conducted using this film.

(al Hygroscopicity test 5C11 A square test film was prepared, dried at 60°C for 1 hour, and then held in an atmosphere of 90% relative humidity (20°C) for 15.30.45 and 60 minutes. After the test The weight of each film was measured.Highly hygroscopic films absorb moisture and increase in weight.

Mountain) Moisture release test In the above moisture absorption test, after 60 minutes of moisture absorption, immediately under an atmosphere of relative humidity 40% (20 ° C.)
．． Holds were held for 45 and 60 minutes.

The weight of each film after the test was measured. Films with excellent moisture wicking properties release water and reduce weight.

(C) 10 panelists evaluated the sensation of touching the test film.
However, evaluation was made based on either "slip feel" or "stickiness."

1dl Durability test 5cII + square test film was placed in warm water at 60℃ for 2
After holding for 0 minutes, it was 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 amount of insolubilized gelatin or gelatin eluted was measured from the change in weight. In addition, the moisture absorption test, moisture release test, and hand sensory test were also conducted after hot water treatment to observe changes in properties.

(e) Dyeability test An uncolored test film was immersed in a 1% red No. 2 solution adjusted to pH 2.0 with acetic acid, held in boiling water for 10 minutes, washed thoroughly with water, and dried at 60°C. Ta. The obtained colored test film was subjected to the same hot water treatment as described above, and the appearance color before and after the hot water treatment was observed to evaluate the flow state of the dye due to the hot water treatment. For test films containing pre-colored insolubilized gelatin, the dyeing step was omitted and the appearance color before and after hot water treatment was observed.

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

Unit: g/rrf Unit: g/% As a result of the above test, Comparative Example 3.2 in which conventional gelatin was added was compared to Comparative Example 3.2 in which urethane resin was used alone.
1 and Example 3.1 in which insolubilized gelatin was added were both found to be effective in improving moisture absorption and desorption properties.

Table 4: Hygroscopicity test (after hot water treatment) - The gelatin contained in the urethane resin has melted out, so the weight has decreased significantly.

Table 6 - Texture sensory test Table 5 Moisture release test (after hot water treatment) - Unit: g/m Table 7 Unit: g/, 1 Comparing the above test results with the above Tables 2 and 3 In Comparative Example 3.1 using conventional gelatin, the hygroscopicity was extremely reduced by hot water treatment, whereas in Examples 3 and 1 according to the present invention, hot water treatment It can be seen that the hygroscopicity hardly decreases even if this is done. Also,
In Comparative Example 3.1, as a result of the above test, Examples 3.1 to 3
．． 3 and Comparative Example 3.1 both have the effect of improving the feel of the urethane resin. However, in Comparative Example 3.1, the hand feel improvement effect disappears after hot water treatment, whereas in Examples 3.1 to 3.3, there was no effect even after hot water treatment; It can be seen that the modified synthetic resin film according to the invention has high durability against hot water treatment.

It can be seen that it will improve. However, in Comparative Example 3.1 using conventional gelatin, the dye came off due to hot water treatment, whereas in Examples 3.1 to 3 according to the present invention.
It can be seen that in No. 3, there was no change in dyeing at all and the durability was excellent. In addition, a dyed colorless film as in Example 3.1, or Examples 3.2 and 3.3
It can be seen that films made of synthetic resin compositions to which pre-colored insolubilized gelatin is added can exhibit good dyeing durability in all cases.

Results of the above tests, Examples 3.1 to 3.3 and Comparative Example 3
．． As shown in 1, by adding gelatin or insolubilized gelatin, the dyeability of the urethane resin was improved as a result of the above test, when hot water treatment was performed, there was a significant weight change compared to Comparative Example 3゜1. , there is not much change in Example 3.1. The weight change of the test film is caused by the elution of gelatin or insolubilized gelatin contained in the polyurethane resin. The weight ratio of the test film was 85.7% polyurethane resin and 14.3% gelatin or insolubilized gelatin. Therefore, in Comparative Example 3.1, most of the gelatin in the polyurethane resin was eluted, whereas in Example 3.1
It can be seen that most of the non-4-densified gelatin remains.

(2) Manufacture of Modified Fabrics Fabrics made of nonwoven fabrics and woven fabrics were immersed in resin liquids of the following formulations, subjected to mangle squeezing, and then dried at 150°C for 2 minutes.

The obtained modified fabric was subjected to the same moisture absorption test and hand sensory test as described above. Note that the hot water treatment was the same as the test conditions described above, except that the sample was immersed in hot water at 60° C. for 10 minutes. The test results are shown in Tables 11 and 12.

Unit: g/cd Vehicle position: MM group As a result of the above test, the modified cloth impregnated with the modified synthetic resin composition according to the present invention has improved hygroscopicity and texture;
Furthermore, it has been demonstrated that these properties are not lost by hot water treatment.

■ Manufacture of modified paints Paints were manufactured using the formulations shown in Table 13 below.

Table 14 After coating and drying each of the paints manufactured with the above formulations in a normal process, the texture and appearance of the painted surface were observed, and the evaluation results are shown in Table 14. In addition, as a drying process, Example 5.1 and Comparative Example 5.1 were dried at room temperature, and Example 5.2 and Comparative Example 5.2 were baked 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-like soft leather-like finish that could not be obtained with paint alone.

■ Manufacture of modified adhesive A modified adhesive having the following formulation was manufactured.

<Example 6.1> Polyether type polyester prebolimer (viscosity 30,000 cps/25°C, concentration 50%) 100 parts by weight Crosslinking agent 10 Accelerator 2 Insolubilized gelatin (
B-1) 10 f <Comparative Example 6. l> The same formulation as in Example 6.1 above except that the insolubilized gelatin was excluded.

The modified synthetic resin composition of Example 3.1 was coated on release paper and dried at 120°C.
Or coated with the adhesive of Comparative Example 6.1. This adhesive-attached sheet was attached to a nonwoven fabric, and the adhesive was cured by heating to 120°C. After incubating at room temperature for 3 days, the release paper was peeled off to produce a surface-modified nonwoven fabric on which a layer of the modified synthetic resin composition was laminated. Comparing the adhesion properties of surface-modified nonwoven fabrics using the adhesives of Example 6.1 and Comparative Example 6.1, there was no significant difference, and even if insolubilized gelatin was added as in Example 6.1, the adhesion was not significant. It can be seen that the quality does not decrease. When the moisture absorption and desorption properties were compared, Example 6.1 was far superior to Comparative Example 6.1. This means that when a modified synthetic resin composition is laminated on the surface of a nonwoven fabric to improve its moisture absorption and desorption properties, the present invention also applies to the adhesive used to bond the nonwoven fabric and the modified synthetic resin composition. It has been demonstrated that the use of modified adhesives can exhibit superior moisture absorption and desorption performance.

〔Effect of the invention〕

The modified synthetic resin composition according to the present invention described above contains insolubilized gelatin with a particle size of 100x or less, so that it has a higher
It has much higher hygroscopicity or water absorption, and has an excellent surface texture and durability compared to conventional gelatin-containing products. Insolubilized gelatin also exhibits excellent performance in terms of anti-condensation properties, dyeability, antistatic properties, etc. Compared to regular gelatin, it can be synthesized into a fine, uniform powder more efficiently and economically. It can be mixed uniformly with the resin composite acid, and the surface of the product made of the synthetic resin composite acid can have an excellent texture without unevenness or unevenness. Furthermore, since the strength and durability of the product are not reduced, it is possible to obtain a product with excellent performance.

Since insolubilized gelatin can be added to synthetic resins that dislike water, it is now possible to easily produce modified synthetic resin compositions made of polyurethane resin, etc., which were difficult to produce in the past, improving the performance and expanding the applications of modified synthetic resin products. can contribute to

Insolubilized gelatin is resistant to water, especially high-temperature hot water, so it has high durability against hot water treatments such as washing and laundering during the manufacturing process or use of modified synthetic resin products. Modified synthetic resin films and modified synthetic resin films, which are products made of the above-mentioned modified synthetic resin compositions, can be used in a wider range of environments and can exhibit excellent performance such as moisture absorption and desorption properties over a long period of time. Textiles, modified paints, and modified adhesives can exhibit excellent quality performance for their respective uses due to the excellent effects of the modified synthetic resin compositions described above.

For example, the modified fabric can be used as a material constituting synthetic leather or artificial leather, and has a texture and properties extremely similar to natural leather, and is an economical leather material. If the modified paint is used for finishing indoor wall surfaces, it can form a finished surface with excellent moisture absorption and desorption properties and dew condensation prevention effects. If the modified adhesive is used to bond products made of the above-mentioned modified synthetic resin film or modified cloth, the entire bonded final product will have hygroscopic properties, etc., despite the presence of the adhesive layer. It has excellent performance in terms of. Furthermore, the same effect as described above can be obtained when it is used for adhering wood and other natural hygroscopic materials.

Claims (1)

[Scope of Claims] 1. A modified synthetic resin composition comprising a synthetic resin containing insolubilized 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 fabric obtained by impregnating a nonwoven or woven fabric with the modified synthetic resin composition according to claim 1. 4. A modified paint containing insolubilized gelatin with a particle size of 100 μm or less. 5. A modified adhesive comprising an adhesive containing insolubilized gelatin with a particle size of 100 μm or less.