JPH0860560A - Production of nep-containing wool yarn - Google Patents

Abstract

PURPOSE: To obtain a wool yarn free from change in hue and having bright nep by treating a cellulose fiber-based nep previously dyed with a reactive dye with a cellulose reactant resin, mixing the treated nep with wool and dyeing the wool side. CONSTITUTION: Cotton nep is dyed into prescribed hue with a reactive dye and immersed in a solution of a cellulose reactant resin such as a glyoxal-based resin and dried and heat-treated to form colored resin finished nep. The colored nep is mixed with wool and spun by wasted spinning system to provide nep woolen yarn, whose wool side is then dyed with a dye for wool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing wool yarn containing nep.

[0002]

2. Description of the Related Art In order to manufacture wool yarns having different hues in the nep portion of the wool yarn containing nep, it has been conventional to dye wool fibers constituting the yarn main body by dyeing with different colors in advance. It is widely practiced to dye the above and then spin the two together. According to this method, it is possible to obtain a nep yarn having a clear nep hue, but it is necessary to always prepare a stock of dyed raw materials according to the expected demand of the customer, which is economical. Unreasonable.

Therefore, there is also a method in which fibers other than wool are used for the nep and the nep-containing wool yarn is spun and dyed differently by different dyes by post-dyeing. According to this method, dyeing is performed. There is no need to prepare a stock of raw materials, which is economically rational, but the stain of wool dyes on the nep is severe and only the dull hue of the nep can be obtained.

In order to obtain a wool yarn having a clear hue of nep,
A method has been proposed in which only nep is dyed vividly first, and water repellent treatment is used to prevent permeation of the wool dye, and then the nep yarn is spun together with this to dye the wool body. On the other hand, the dyed seats of wool dyes are blocked by anionizing the sharply dyed wool nep, and then the nep yarn is spun together with this to dye the wool body. Methods have been proposed, but none of the methods can avoid contamination of wool dye with nep when dyeing wool yarn,
The reality is that a rational manufacturing method for wool yarn having a nep of a vivid hue has not been obtained even today.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to produce a wool yarn having a nep of a clear hue.

[0006]

The present invention achieves the above object and has the following configuration. That is, the present invention treats a nep made of a cellulose fiber previously dyed with a reactive dye with a fibrin reactive resin, and then, at the time of spinning a wool yarn, spinning the nep together with
The gist is a method for producing a wool yarn containing nep, which comprises dyeing the wool side with a dye for wool.

The present invention will be described in detail below.

In the present invention, first, a nep made of cellulose fibers dyed with a reactive dye in advance is treated with a fibrin reactive resin.

The term "nep made of cellulose fibers" as used herein means a nep made of fibers such as cotton, hemp, rayon, and polynosic, and these fibers have been dyed beforehand with a reactive dye by a conventional method. There is.

The nep made of this cellulose fiber is treated with a fibrin reactive resin. Examples of the fibrin reactive resin used here include glyoxal resin, ethylene urea resin, triazine resin and the like. Of these, the use of dimethyloldihydroxyethyleneurea (DMDHEU), which is a glyoxal-based resin, makes it possible to obtain a nep with a clear hue without dyeing at all when dyeing with a dye for wool in the subsequent step. It is recommended because it is particularly effective in.

The treatment with the fibrin reactive resin is carried out in the order of ordinary steps of dipping, deliquoring, drying and heat treatment.

The concentration of the immersion resin liquid is 3 times that of the fibrin reactive resin.
0 to 100 g / liter, and the catalyst uses a required amount of metal salt system. Do not use softeners because they reduce the dyeing prevention effect.

The nep immersed in the resin liquid is drained with a centrifugal dehydrator to a water content of 30 to 40% by weight. After this, the nep is dried at about 100 ° C. and heat treated at 130-170 ° C. to complete the reaction between the fibrin and the resin.

Cellulose fiber nep, which has been dyed with a reactive dye in advance and treated with a fibrin-reactive resin, is spun together with a woolen yarn or a woolen yarn when spinning a wool yarn. By doing this, dyeing wool yarn,
Alternatively, it is possible to obtain a wool yarn containing a cellulose fiber nep that does not cause dyeing with a wool dye at the time of anti-dying.

After that, the wool yarn containing nep is formed into a thread shape or processed into a woven fabric, a knitted fabric or the like, and then the wool side is converted into a normal wool dye such as an acid dye, a metal-containing dye or a reactive dye. ， Stained in the usual way.

The present invention has the above configuration.

[0017]

[Function] Cellulose fibers are dyed with a reactive dye in advance and then treated with a fibrin-reactive resin, part of the resin covers the outside of the fiber, and part of the resin fills the micellar gap inside the fiber, Also, by reacting with and blocking the hydroxyl groups of the cellulose fibers, it becomes difficult for water and dye to enter. When dyeing with wool dye after incorporating nep into the wool yarn in such a state, the wool dye is exclusively on the wool side. Since only the dye is dyed and the transfer to the nep is completely suppressed, the hue of the nep is preserved as it is, and it becomes possible to obtain the wool yarn containing the nep having a clear hue.

[0018]

EXAMPLES Next, the present invention will be described more specifically by way of examples. Regarding the hue change of nep, the change in hue after dyeing is visually judged on the basis of the hue before dyeing of wool side, The evaluation was made in the following three grades. ○ No hue change △ Some hue change × Hue change

Example 1 Bleached nappe made of 100% cotton was prepared, and this was used in the following formulation 1
55 for prescriptions 1 to 3 when dyeing with
Dyeing was carried out at 60 ° C. for 60 minutes, and for formulation 4 at 70 ° C. for 45 minutes to obtain nep of clear hues of red, yellow, brown and green, respectively.

Formulation 1 Sumifix Brill Red G 3.0% owf (Sumitomo Chemical Co., Ltd., reactive dye) Anhydrous Glauber's salt 40 g / liter Soda ash 10 g / liter

Formula 2 Sumifix Bryl Yellow 3GS 4.0% owf (Sumitomo Chemical Co., Ltd., reactive dye) Anhydrous Glauber's salt 40 g / liter Soda ash 10 g / liter

Prescription 3 Sumifix Dark Brown BRS 2.5% owf (Sumitomo Chemical Co., Ltd., reactive dye) Anhydrous Glauber's salt 40 g / liter Soda ash 10 g / liter

Formula 4 Diamirabryl Yellow 7GL 2.0% owf (Mitsubishi Kasei Co., Ltd., reactive dye) Diamirabryl Green 6B 0.5% owf (Mitsubishi Kasei Co., reactive dye) Anhydrous mirabilite 40 g / liter Soda ash 10g / l

Next, after drying, it was dipped in a resin solution having the following formulation 5 and then deliquored to a water content of 40% with a centrifuge,
After drying at 0 ° C. for 3 minutes, heat treatment was performed at 150 ° C. for 3 minutes. Prescription 5 Sumitex Resin NS-11 80 g / liter (Sumitomo Chemical Co., Ltd., Glyoxal resin) Sumitex Accelerator X-80 24 g / liter (Sumitomo Chemical Co., Ltd., metal salt catalyst) Alcopol 650 2 g / Liter (Nonionic surfactant made by Allied Colloid)

The dyed / resin treated cotton nep obtained is 2 for each color
% By mixing with wool and spinning by woolen method, 2 /
An 18th count Nep wool yarn was obtained.

The obtained Nep wool yarn was prepared according to the following formulations 6-8.
Each of them was dyed with a reactive dye for wool, an acidic milling dye, and a 1: 2 type gold-containing dye at 100 ° C. for 30 minutes, followed by washing with water and drying.

Formulation 6 Lanazol Blue G 2.0% owf (product of Ciba-Geigy) Albegar B 1.0% owf (manufactured by Ciba-Geigy, leveling agent) ammonium sulfate 4.0% owf acetic acid (80%) 1.5 % Owf

Formulation 7 Suminol Milling Brylblue B Conc 1.0% owf (Sumitomo Chemical Co., Ltd.) Arbegar A 1.0% owf (Ciba-Geigy Co., leveling agent) Ammonium sulfate 4.0% owf Anhydrous mirabilite 5.0% owf

Formulation 8 Ranyl Brylblue G Conc 1.0% owf (Sumitomo Chemical Co., Ltd.) Arbegar A 1.0% owf (Ciba-Geigy Co., leveling agent) Ammonium sulfate 4.0% owf

For comparison with the present invention, the dyed cotton nep was replaced with sodium monochloroacetate (manufactured by Kishida Chemical Co., Ltd.) 1 in place of the resin processing step of the formulation 5 in this example.
After treatment with a treatment solution consisting of 0% owf and 10% owf of sodium hydroxide at 80 ° C. for 30 minutes, it was washed with water and acetic acid 10 g /
A nep-containing woolen yarn for comparison (referred to as Comparative Example 1) was obtained in the same manner as in this example, except that it was pickled with liter, washed with water and dried. Further, for comparison with the present invention, a nep-containing woolen yarn for comparison (referred to as Comparative Example 2) was prepared in the same manner as in this Example except that the resin processing step according to Formulation 5 was omitted in this Example. Obtained.

The performance of the woolen yarn containing the present invention and the comparative cotton nep was evaluated, and the results are shown in Table 1 together.

[0032]

[Table 1]

As is clear from Table 1, the nep-containing woolen yarn according to the method of the present invention has a clear nep with no hue change.

[0034]

According to the present invention, it is possible to produce a wool yarn having a clear nep without a hue change.

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Claims (1)

[Claims] 1. A nep made of a cellulose fiber dyed with a reactive dye in advance is treated with a fibrin reactive resin, and then, when the wool yarn is spun, the nep is also spun together,
Then, the wool side is dyed with a dye for wool, and the method for producing the wool yarn containing nep is characterized.