JPH03287883A - Production of multi-colored wool fiber product - Google Patents

Abstract

PURPOSE:To obtain the subject product having excellent shrinkproofness, color fastness and multi-color effect by subjecting a fiber product composed of chrome-mordanted wool and non-mordanted wool to shrinkproofing treatment, treating the product with an acidic mordant dye and then treating with a mordant metal other than chromium. CONSTITUTION:A wool fiber product composed of chrome-mordanted wool and non-mordanted wool is subjected to shrinkproofing treatment (e.g. by oxidizing with chlorine or oxygen) and the treated product is treated with an acidic mordant dye and then with a mordant metal compound other than chromium (e.g. cobalt, zinc, copper, nickel or tin) to obtain the objective multi-colored wool fiber product having excellent shrinkproofness and color fastness.

Description

[Detailed description of the invention] Industrial applications Concerning the manufacturing method.

Conventional technology Traditionally, methods for manufacturing multicolored wool fiber products that exhibit a unique hair mix-like effect and have shrink-proofing properties include chlorine oxidation and oxygen oxidation methods for yarn raw materials such as loose wool and sliver. A method in which wool fiber products dyed by a method such as the so-called "multichrome method" is subjected to a shrink-proofing treatment using a resin such as a bisulfite-added urethane polymer, and then blended by yarn dyeing and made into a fabric. There are known methods for applying the same.

However, the former method requires many processes from dyeing to fabric production, requires changing and cleaning the machine after each dyeing process, and also generates a large amount of waste during the manufacturing process, which reduces production yield. "Quick delivery" and "
The problem is that it cannot meet the demand for smaller lots.

In addition, the latter method requires a high degree of resin processing in order to impart sufficient shrink-proofing properties to wool fiber products, which has the disadvantage that the soft feel peculiar to wool is impaired.

In addition, a method has been proposed for shrink-proofing fabric-like wool fiber products by oxidation treatment using a croiming machine.
The targets are plain dyed products and printed fabrics, and depending on the method, it is not possible to obtain a shrink-proof wool fiber product that exhibits a unique color feel similar to that of a hair mix.

Problems to be Solved by the Invention The present invention solves the above-mentioned conventional problems, and has both excellent shrink-proofing properties and dyeing fastness, and can be used in various hair mix tones without impairing the soft texture peculiar to wool. This was done in order to provide a multicolored wool fiber product that exhibits a unique color effect.

A means for solving the problem, that is, the present invention, is to subject wool fiber products made from chromium mordant wool and unmordanted wool to anti-shrunk treatment, and then to treat them with an acidic mordant dye, and then to react with the acidic mordant dye. The present invention relates to a process for producing multicolored wool fiber products, characterized in that the process is further treated with a mordant metal compound other than chromium, which produces a colored insoluble compound.

Wool fiber products made from chromium mordanted wool and unmordanted wool may be produced according to conventional multichrome processes.

Potassium dichromate, sodium dichromate, etc. are used as the chromium compound.

Prior to chromium treatment, wool is usually scoured using nonionic or anionic surfactants.

The form of the wool fiber product, which consists of chromium mordanted wool and unmordanted wool, may be blended yarns, woven or knitted fabrics using blended yarns, and the mixing ratio of the two may be appropriately selected as desired.

The shrink-proofing treatment of wool fiber products can be carried out by appropriately utilizing conventionally known wool shrink-proofing methods, but particularly suitable methods include using chlorine gas, sodium hypochlorite, sodium dichloroisocyanurate, etc. The chlorine oxidation method uses potassium permanganate, persulfuric acid, potassium persulfate, etc.

This anti-shrink treatment hardly affects the chromium content in the chromium mordanted wool, and the chromium, which is required for subsequent different color dyeing, is retained almost quantitatively. This means that the oxidation reaction occurs intensively in the disulfite bonds around the wool fibers and does not affect the coordination active sites during chromium mordanting.

Moreover, since the critical surface tension of the wool is increased by this shrink-proofing treatment, various hand control agents such as silicone softeners, polyamide resins, etc. can be used. For example, a cashmere-like texture can be imparted to wool fiber products by treating them with specific enzymes (
(Refer to the specification of Japanese Patent Publication No. 1-54471).

The shrink-proof wool fiber product obtained as above is firstly
After treatment with an acidic mordant dye, further treatment is performed with a mordant metal compound other than chromium that reacts with the acidic mordant dye to form a colored insoluble compound.

As the acidic mordant dye, dyes that are mordanted with chromium compounds and mordant metal compounds other than chromium may be used; for example, the commercially available product rchrom from Yamada Chemical Industry Co., Ltd.
me Yellow A S J, rMordantY
yellow l 02J, rMordant Blue
LMJ, rchrome Red 5 G J, rc
chrome Navy 3 RM, 1, r Chrom
e Brain L E J and rMordant
Green501”, commercial product rM of Mitsui Toatsu Co., Ltd.
ItsutChrome Fast Brown BX
J and Sumitomo Chemical Co., Ltd.'s commercial product r S unc
Examples include Hromine Gray 3 B L J.

Since some of the wool fibers are mordanted with chromium compounds, acid mordant dyes are dyed. Therefore, it is not necessary to make the dyebath extremely acidic in order to improve the exhaustion of the dye, as is the case with normal post-mordanting - the dyeing conditions identical to those for wool dyes in the membrane should be adopted. Bye.

Therefore, the treatment using a mordant metal compound other than chromium that reacts with the nucleic acid mordant dye to produce a colored insoluble compound can be carried out in the same bath as the bath in which the acidic mordant dye treatment is carried out.

For example, adjusting the initial pH from weakly acidic to neutral,
Add a conventional leveling agent (for example, "Newpon 5 DJ (commercial product from Nichika Kagaku Kogyo Co., Ltd.),""Levezin 200J (commercial product from Nichika Kagaku Co., Ltd.), etc.), and increase the bath temperature by 1°C/min. After raising the temperature at
By continuing for 0 to 30 minutes, the acidic mordant dye absorbed into the unmordanted wool is stabilized and fast different color dyeing becomes possible.

Mordant metal compounds other than chromium are compounds that react with acidic mordant dyes to produce stable colored compounds, and by appropriately selecting the colored compounds, it is possible to obtain a variety of unique hair mix-like effects.

Examples of such mordant metals include compounds of cobalt, zinc, copper, nickel, tin, iron, and cadmium, and specific examples include the following compounds. Acetate salts include cobalt acetate, iron acetate, acetic acid, copper, nickel acetate, etc. Chlorides include zinc chloride, copper chloride,
Nickel chloride, etc., and sulfates such as copper sulfate and iron sulfate. Also, commercially available copper-containing fixing agents (for example, "Cabramin 700J (commercial product of Nippon Someka Kogyo Co., Ltd.)" can also be used.

The treatment using the mordant metal compound described above is generally carried out in a dye bath as described above, but it may also be carried out by a padding method after dyeing with an acidic mordant dye.

In addition to the above-described dyeing method for wool fiber products according to the present invention, functional groups such as amino groups contained in the fibers can be removed by treating wool fibers with conventional sulfamic acid, aminochloroallyl compounds, polyhydric phenols, etc. A variety of different color effects may be produced by combining resist dyeing treatment methods that block and suppress dyeing.

Note that it is possible to produce multicolored wool fiber products with shrink-proof properties by subjecting wool raw materials that have been pre-shrink-proof to the process including the dyeing process described above, but in this case, it is possible to produce a multi-colored wool fiber product with shrink-proof properties. Fulling processing is not possible.

Hereinafter, the present invention will be explained by examples.

Example 1 A blended yarn (1/30) of chromium mordanted wool/untreated wool (50150'') was produced by the multi-chrome dyeing method, and the blended yarn was subjected to double-thread processing to produce a fabric with the following characteristics. Made: 2/30 (Z47o, 5430) Number of ground warp threads: 3268 Number of stitches: 44th thread Attachment: 4519 2/2 / Diagonal The fabric was passed through the usual sorting process and then dyed using a jet dyeing machine as follows: Preshrinkage treatment was performed according to the procedure (bath ratio 1:20
).

(i) The fabric was placed in an aqueous solution (20°C) containing 10% owf of sodium sulfate and ``Highlight 60 GJ (manufactured by Nissan Chemical Co., Ltd.) containing dichloroisocyanurate 6.0% owf.
(The pH of the aqueous solution was adjusted to 4.0 using acetic acid.)
(adjust to 5).

(ii) Raise the temperature of the aqueous solution to 40°C over 15 minutes, maintain it for 60 minutes, and then
%owf into the bath and process for an additional 10 minutes.

(ii) The fabric subjected to the shrink-proofing treatment is washed with water at 20°C.

A sample of the fabric subjected to the above-mentioned shrink-proofing treatment was dried at 120°C for 1 hour and then subjected to nitric acid decomposition treatment, and the chromium content in the sample was determined by atomic absorption spectrometry.
It was 8% owf.

The above shrink-proof fabric was dyed using a jet dyeing machine under the following conditions.

Dye used: Irgalan Yellow 2GL”) 0.3%ow
f Ilgalan Brown 2 RL (2) 0.1%o
vf mordant blue LM (3) 0.3%ow
f kneepon 5D(4) 1% owf(1
) Ciba Geigy metal-containing dye rI rgalanY
yellow 2 G L J (2) Metallic dye r I rgala manufactured by Ciba Geigy
nBrown 2RLJ (3) Acidic mordant dye rMord manufactured by Yamada Chemical Industry Co., Ltd.
ant Brown LMJ (4) 111 Kagaku Co., Ltd. Level dyeing agent for wool Initial bath heated from 40°C (1°C/min)
, after boiling for 40 minutes, cobalt acetate 0.15
%owf is added and the boiling process is continued for an additional 20 minutes.

The dyed fabric was subjected to a conventional finishing process including padding with a silicone fabric softener to produce a haircloth-like fabric in a mixed color of blue and beige with a soft texture.

The resulting haircloth-like fabric (I) was examined for shrinkage resistance (shrinkage by electric washing machine method), discoloration and fading resistance after washing, and fastness to abrasion, and the results are shown in Table 1.

Example 2 A hair mix-like fabric was produced in the same manner as in Example 1, except that the shrink-proofing treatment was performed in the following procedure: (iXNH4)
* After contacting a woven fabric similar to Example 1 made of a blended yarn of chromium mordanted wool/untreated wool for 10 minutes with an aqueous solution containing SOa 2649/12 (20°C), KMno, 6
Add %owf and hold for 60 minutes.

(1) Raise the bath temperature to 40℃ over 15 minutes,
After keeping it for a minute, it is washed with water at 20°C.

(Toy) Next, the fabric was treated with sodium hydrogen sulfate lO%ow
The bath temperature was raised to 70°C over 10 minutes, maintained for 20 minutes, and then washed with water at 20°C. The chromium content was determined in the same manner as in Example 1 and was found to be 0.32% owf.

The shrink resistance, washing discoloration and fading resistance, and abrasion fastness of the hair mix-like fabric (II) obtained by dyeing were investigated, and the results are shown in Table 1.
Shown below.

Comparative Example 1 The same fabric as in Example 1 was used and dyed with the same dye and sipes. The chromium content of the fabric to be dyed was 0°32% ovf.

Table 1 shows the shrink resistance, washing discoloration and fading properties, and abrasion fastness of the hair cloth look (I') obtained.

Therefore, the characteristics of wool products such as fulling can be effectively utilized during the manufacturing process.

Claims (1)

[Scope of Claims] 1. Wool fiber products made of chromium mordant wool and unmordanted wool are subjected to anti-shrunk treatment, and then treated with an acidic mordant dye, and then reacted with the acidic mordant dye to form a colored insoluble compound. A process for producing multicolored wool textile products, characterized by further treatment with a mordant metal compound other than chromium, which produces 2. The method according to claim 1, wherein the shrink-proofing treatment is performed by chlorine oxidation or oxygen oxidation. 3. The mordant metal compound is cobalt, zinc, copper, nickel,
2. The method of claim 1, wherein the compound is selected from the group consisting of compounds of tin, iron and cadmium. 4. A multicolored wool fiber product obtained by the method according to any one of claims 1 to 3.