JPS6028869B2 - Antistatic agent composition for internal use in polyamide fibers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antistatic composition that can be added to polyamide fibers to provide an antistatic effect, and more particularly relates to a permanent antistatic composition that does not deteriorate in performance even after washing. It is something.

Synthetic fibers are generally susceptible to static electricity, and antistatic agents are required to prevent this problem.

Various surfactants have been proposed as antistatic agents for polymeric substances, such as phosphate ester salts, sulfate ester salts, polyalkylene glycol compounds, amide compounds, imidazoline compounds, betaine compounds, etc. Antistatic treatment is carried out by adding it to monomers or during spinning. When these surfactants are added to polyamide fibers to prevent static electricity, an amount of 1 to 2% by weight is required to obtain a sufficient antistatic effect. As a result, it may have a large effect on the polymerization of polyamide, and when added at the time of yarn production, the biting properties of the polyamide chips may deteriorate, resulting in a decrease in spinning efficiency. Furthermore, surfactants used as antistatic agents are often water-soluble, so when textile products are washed, the surfactants on the surface of the fibers may fall off and lose their antistatic effect, so they must be added in large amounts. If this happens, the dyeing properties, especially the fastness to sunlight, will also decrease. The present inventors have conducted extensive research in consideration of these problems, and as a result, have arrived at the present invention. That is, the present invention is based on the general formula (wherein R is an alkyl group having 10 to 28 carbon atoms or 2
- A mixture of 75 to 95% by weight of a compound represented by a hydroxyalkyl group (n is 15 to 100), 5 to 25% by weight of a fatty acid having 12 to 18 carbon atoms, and a monoester of glycerin is applied to a polyamide. 1. It has been found that an excellent antistatic effect can be obtained by adding 5% by weight of .

The above single-pronged compound is synthesized as follows.

Ethylene oxide is added to an alkylamine or a 2-hydroxyalkylamine by a conventional method using a caustic potash catalyst. This is dissolved in water or an organic solvent such as inpropyl alcohol and reacted with sodium monochloroacetate at 70 to 80 oo in the presence of equimolar caustic soda to remove the formed sodium chloride by desalting. The reaction formula is shown below. Even if the compound represented by the single-pronged formula above is added alone in an amount of 1.0 to 1.5% by weight, a practical antistatic effect can be obtained, but when used in combination with glycerin fatty acid monoester, it can be added in an even smaller amount than when added alone. Provides antistatic effect. The ratio of the compound represented by the above single-pronged formula to the glycerin fatty acid monoester is not preferable because if the glycerin fatty acid monoester is more than 25% by weight, the antistatic effect will be poor, and if it is less than 5% by weight, the antistatic effect will decrease when the fiber is washed. .

As described above, the composition of the present invention exhibits effective antistatic properties with a smaller amount added than conventional antistatic agents, and maintains its performance even after washing due to its moderate compatibility with polyamide. This is thought to be due to the antistatic agent migrating to the fiber surface.

Surfactants that exhibit excellent antistatic effects are also highly polar, which can result in slippage during spinning and poor biting properties.From the perspective of polyamide, antistatic agents are considered a type of impurity and are added in large amounts. In some cases, it is thought that the physical properties of the polyamide may also be affected. In this sense, the composition of the present invention, which can provide a sufficient antistatic effect with a small amount added, is advantageous not only in terms of antistatic effect but also in terms of productivity, physical properties, dyeability, and economical efficiency of polyamide fibers. The composition of the present invention can be applied to polyester fibers as well as 6-nylon and 6,6-nylon, and whether it is added to the monomer before polymerization or added at the time of grade yarn, it has an antistatic effect and other properties. There is no change.

Next, the present invention will be explained using measurement examples and examples.

Measurement Example Table-1 shows No. 1 to 19 show the general formula of the antistatic agent composition used in the measurement examples, the structure of the glycerin fatty acid monoester, and the mixing ratio thereof.

The antistatic agent composition shown in Table 1 was added to 6-nylon, 6-
6-nylon chips and mixed, extrusion spinning was performed to prepare a monofilament (approximately 20 denyl).

Monofilament is scoured in the usual way and 20o0
The antistatic effect was evaluated by leaving it at a relative humidity of 40% for 2 hours and measuring the half-life using a static honest meter (manufactured by Shishido Shokai). The results are shown in Table-2. Further, the monofilaments of 6-nylon and 6.6 nylon prepared by the above method were washed 50 times in the following manner, and the antistatic effect was evaluated in the same manner as above. The washing test was carried out using a reversible electric washing machine, using Miyoshi New Jump as a detergent at a ratio of 2 days/day at 4000 for 5 minutes → rinsing (2 minutes at room temperature) → spin-drying → rinsing (2 minutes at room temperature) → spin-drying. was treated as one wash, and this was repeated 50 times.

Table-I Taiichi 2 The results are shown in Table-3.

Table 1 3 Examples Next, No. 1 shown in Table 4. 20 to 28 antistatic compositions of the present invention were prepared.

Table 4 shows R and n of the compound of the general formula, the fat brewing components of the glycerin fatty acid monoester, and the mixing ratio thereof.
The samples in Table 4 were blended into 6-nylon and 6.6-nylon chips in the same manner as in the measurement example, and monofilaments were prepared.
treated and half-life determined. The results are shown in Table 5 (A).
Next, a repeated washing test was conducted using the same monofilament in the same manner as in the measurement example, and the half-life was measured. The results are shown in Table 5 (B). Table 1 4 Table 5

Claims (1)

[Claims] 1 General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (However, R is an alkyl group having 10 to 28 carbon atoms or 2
Antistatic agent composition for polyamide consisting of a mixture of 75 to 95% by weight of a compound represented by -hydroxyalkyl group (n is 15 to 100) and 5 to 25% by weight of a monoester of fatty acid having 12 to 18 carbon atoms and glycerin. thing.