JP2853179B2 - Synthetic resin composition - Google Patents

Description

The present invention relates to a synthetic resin composition. For more information,
The present invention uses polyurethane resin, a resin for artificial leather such as vinyl chloride resin as a material, and when producing synthetic leather and artificial leather, imparts slipperiness to the surface of the coating and provides excellent abrasion resistance and texture, The present invention relates to a novel synthetic resin composition which has improved tactile sensation and can be easily sewn when processed into bags, shoes and the like.

[Conventional technology and problems]

In recent years, the development of artificial leather resins has been under development, and in particular, polyurethane resins and vinyl chloride resins are frequently used as artificial leather materials. However, although the polyurethane resin is excellent in the softness and toughness of the coating film, it lacks the slipperiness of the surface, and has problems such as abrasion resistance, sewing on a sewing machine (hand movement does not proceed smoothly), and the like.

Attempts have been made to solve the problem by selecting a raw material, using the resin together with a silicon resin or the like. Depending on the type of raw material, the slipperiness of the problem is improved, but on the other hand, softness, which is one of the characteristics, is lost. In addition, in combination with silicone resin,
Poor adhesiveness, which is one of the characteristics of silane compounds, appears as a drawback, and causes a problem in the adhesive strength with the base material of artificial leather.

The vinyl chloride resin uses various plasticizers to adjust softness. However, due to the compatibility problem between the vinyl chloride resin and the plasticizer, the plasticizer exudes (bleeding phenomenon) with the passage of time, causing stickiness on the surface and causing the same problem as the urethane resin. In addition, the feeling and feel are significantly impaired. In order to prevent this bleeding phenomenon, various plasticizers have been studied, but no satisfactory one has been obtained yet. As described above, although all of the resins have excellent performance as artificial leather materials, the reality is that a resin composition that sufficiently expresses this performance has not yet been obtained.

[Problem to be solved by the present invention]

An object of the present invention is to provide a synthetic resin composition which imparts sufficient surface slipperiness to the above-described artificial leather, and which is particularly excellent in abrasion resistance, feeling and feel.

[Means for solving the problem]

The present inventors have conducted intensive studies on various derivatives of amino acids to solve such problems, and as a result, added ε-mono long-chain acyl basic amino acids to resins for artificial leather such as polyurethane resins and vinyl chloride resins. By doing
The present inventors have also found that, at the same time as the surface slipping property is improved, a good feeling and a tactile sensation can be obtained, thereby completing the present invention.

That is, the present invention relates to a resin component 100 in an artificial leather resin solution.
Ε-mono long-chain acyl basic amino acid was added in an amount of 0.1 part by weight.
The present invention relates to a synthetic resin composition containing 1 to 40 parts by weight and then removing a solvent.

Examples of the basic amino acid that is a component of the ε-mono long-chain acyl basic amino acid used in the present invention include lysine,
Ornithine may be mentioned, and these may be any of an optically active substance and a racemic form. In addition, long-chain acyl groups (fatty acid residues)
Examples thereof include an aliphatic acyl group having 8 to 22 carbon atoms (fatty acid residue). Specific examples include capryloyl, caproyl, lauroyl, myristoyl, palmitoyl, stearoyl, behenoyl, cocoyl (coconut fatty acyl), and curing. Tallow fatty acid acyl, tallow fatty acid acyl and the like can be mentioned. Further, a mixture of these acyl groups may be used.

The ε-mono long-chain acyl basic amino acid used in the present invention is a so-called SCHOTTEN BAUMA in which a fatty acid chloride is dropped into an alkaline aqueous solution of the above basic amino acid.
It can be obtained by a known method such as a method by the NN reaction, or a method of heating and dehydrating a fatty acid salt of a basic amino acid at a temperature of 100 ° C to 250 ° C (Japanese Patent Publication No. 51-28610).
Examples of the thus obtained ε-mono long chain acyl basic amino acids include ε-capryloyl lysine, ε-
Lauroyl lysine, ε-myristoyl lysine, ε-palmitoyl lysine, ε-stearoyl lysine, ε-bebenoyl lysine, ε-cocoyl lysine, ε-hardened tallow fatty acid acyl lysine, δ-caproyl ornithine, δ-lauroyl ornithine, δ-palmitoyl ornithine, δ-stearoyl ornithine, δ-behenoyl ornithine, δ
-Tallow fatty acid acyl ornithine and the like and mixtures thereof. The shape of the ε-mono long-chain acyl basic amino acid solid obtained in the present invention depends on the amount of applied resin, but is preferably 100 μm or less. More preferably, it is 20 μm or less. All of these compounds are insoluble in water and various solvents, have no irritation to the human body, and are excellent in safety (Japanese Patent Application Laid-Open No. 61-137812).

On the other hand, examples of the artificial leather resin used in the present invention include a polyurethane resin, that is, a dry polyurethane resin solution, an emulsion polyurethane resin solution, a foam polyurethane resin solution, a wet urethane resin solution, and the like. Synthetic resins, for example, copolymers of polyacrylic acid, polyvinyl chloride, polystyrene, polybutadiene and the like, and mixed urethane resin solutions may be used. Furthermore, it is not affected by any processing method such as dry processing and wet processing depending on the selection of the solvent.

Examples of the vinyl chloride resin include a plasticizer-added vinyl chloride resin, a paste-like vinyl chloride resin, a foam paste-type vinyl chloride resin, and the like. Processing of these vinyl chloride resins into artificial leather is performed by a normal processing method. No problem.
In addition, in the preparation of the composition of the present invention, the addition amount can be arbitrarily selected depending on the type of the artificial leather resin described above and the required performance. However, in any resin,
If the content is less than 0.1% by weight, a remarkable effect is hardly exhibited.
If it is added in an amount of not less than% by weight, the softness required for artificial leather tends to decrease, and the addition of 3 to 20% by weight is practically preferable.

As a method for incorporating an ε-mono long chain acyl basic amino acid into a resin solution, (1) a predetermined amount of ε is added to the resin solution.
-A mono-long-chain acyl basic amino acid can be added and easily contained using high-speed stirring or a triple roll.

Further, (2) when producing a polyurethane resin, a predetermined amount of ε-mono long-chain acyl basic amino acid is added to complete the urethane reaction before completing the urethane reaction such as a chain length extension step. By using this method, it partially reacts with the polyurethane resin, the compatibility is improved, and uniform dispersion becomes possible.

Also, after dissolving the artificial leather resin described above in a solvent, that is,
When the composition of the present invention is obtained by adding the composition of the present invention to a resin solution for artificial leather, adding 10% by weight or more of the resin increases the viscosity as the amount of addition increases, and the appropriateness required for a molding machine (coating machine) It may not be possible to obtain a high viscosity. However, this case can be solved by diluting with the same solvent as the solvent of the resin solution.

(Effect of the present invention)

The natural leather tone required for artificial leather, that is, the feeling and feel are improved, and the surface slipping property and abrasion resistance are also improved, so that molding of shoes, bags (bags) and the like becomes easier, and furniture, vehicles, etc. Applications can be expanded to new fields.

EXAMPLES Next, the present invention will be described more specifically with reference to examples. The measurement and evaluation of the coating performance in the examples were performed by the following methods.

(1) Surface smoothness; coefficient of friction measurement Model KES-SE (friction coefficient tester) KATO.TECH CO.LTD Measurement conditions Temperature 24 ° C Humidity 53% Load 50g Sliding speed 1mm / sec Contact area 1cm ² contact Surface Coating x Coating (2) Coating properties; Tensile strength Model Tensilon UTM-4-100 Type Orientec Co., Ltd. Measurement conditions Coating thickness 30μ Coating width 10mm Coating length 50mm (between chucks) Tensile speed 50mm / min Example 1 3.4 kg (17 mol) of lauric acid was gradually added to 5 kg (17.18 mol as lysine) of a 50 wt% L-lysine aqueous solution heated to 80 ° C., and stirring was continued for 30 minutes. Thereafter, the mixture was cooled to 50 to 60 ° C., and 10 parts of methanol was added to precipitate crystals of lysine laurate. After cooling the slurry to room temperature and separating the solid and liquid by a centrifugal separator, lysine laurate in the crystal part was subjected to dehydration condensation at 180 ° C. under reduced pressure for 8 hours to obtain 7.29 kg of ε-lauroyl-L-lysine. Was.

Next, the compound obtained above was uniformly dispersed by using three rolls in the composition shown in Table 1, and the thickness of the film after removing the solvent was 30 μm on the release paper. Is applied using a knife coater at 80 ° C for 5 minutes and at 120 ° C for 3 minutes.
After drying for 0 minutes, the film was evaluated for surface slipperiness (coefficient of friction), tactile sensation, and physical properties.

Example 2 200 g (0.685 mol) of a 50% lysine aqueous solution and stearic acid 19
After mixing 4.9 g (0.685 mol), the mixture was stirred for 1 hour under reflux. Thereafter, the mixture was allowed to cool to room temperature, and methanol 1 was added to obtain a slurry of lysine stearate. This crystal part was separated by a centrifugal separator, and after purging with N ₂ gas, dehydrated and condensed under reduced pressure at 200 ° C. for 20 hours to obtain 242 g of ε-lauroyl-L-lysine. A film for evaluation was prepared in the same manner as in Example 1 using the compound shown below in the formulation.

Formulation Rackskin 5005 100 parts ε-stearoyl-L-lysine 5 dimethylformamide 30 Comparative Example Each of the rackskins 5005 and 301 used in the examples was evaluated according to Example 1 without adding the compound of the present invention. (The rack skin 5005 is referred to as Comparative Example-1 and 301 is referred to as Comparative Example-2).

 Table 2 shows the evaluation results of the examples and the comparative examples.

Continuation of the front page (51) Int.Cl. ⁶ identification code FI C09D 201/00 C09D 201/00 // D06N 3/00 D06N 3/00 (58) Field surveyed (Int.Cl. ⁶ , DB name) C08L 1/00-101/14 C08K 5/16-5/21 D06N 3/00-3/18 C09D 101/00-201/10

Claims (2)

(57) [Claims] 1. An N having an aliphatic acyl group having 8 to 20 carbon atoms.
0.1 to 40 parts by weight of at least one _ε -mono long chain acyl basic amino acid is contained with respect to 100 parts by weight of the synthetic resin, and the solvent contains 50 to 80% by weight based on the total composition. Synthetic resin solution composition. 2. The composition according to claim 1, wherein the synthetic resin is a polyurethane resin or a vinyl chloride resin and an acrylic resin.