JPH05140878A - Method for nonuniform dyeing of cellulosic textile fabric - Google Patents

Abstract

PURPOSE:To carry out nonuniform dyeing excellent in reproducibility by applying a treating solution containing a dye, convertible into a leuco compound with a reducing agent and dyeing cellulosic fiber fabric, the reducing agent and a reducing inorganic metallic compound to the cellulosic fiber fabric before or after napping and heat-treating the resultant fabric with steam without drying the fabric. CONSTITUTION:Cellulosic fiber fabric before napping (or after the napping) is padded in a treating solution containing a water-soluble dye (e.g. a vat dye or a sulfur dye), convertible into a leuco compound with a reducing agent, dissolving therein and dyeing the fiber fabric, an alkaline agent, a sulfin-based reducing agent (e.g. a hydrosulfite) and an inorganic metallic compound (e.g. sodium borohydride) having reducing properties under alkaline conditions, subjected to steaming treatment without being dried, oxidized and then soaped to simply and efficiently enable nonuniform dyeing with excellent reproducibility.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for non-uniform dyeing of a cellulose fiber cloth capable of imparting a non-uniform dyeing effect (marked dyeing, dusty dyeing) to the cellulose fiber cloth.

[0002]

2. Description of the Related Art Conventionally, various developments have been made on cloths having a non-uniform dyeing effect, and many cloths have been on the market. However, most of them are those in which the dye dyed with a wince, a jet dyeing machine, a rotary washer, etc., is only partially removed from the final product, or the squeezing ratio of the padder is intentionally made uneven or uneven. A cloth that has been dyed with a dryer having a uniform temperature distribution is simply dried, or a water-repellent agent and a reducing agent are partially applied in advance, and then dyed to obtain a non-uniform dyeing effect. There was a problem of lack of reproducibility.

In order to solve these problems, Japanese Patent Laid-Open Publication No.
Japanese Patent Laid-Open No. 1-1119789 proposes a method of obtaining a non-uniform dyed product in a marbled texture by using a product obtained by interlacing and weaving modified cellulose and unmodified cellulose, but various yarns and cloths are prepared. However, there was a problem that it was not practical.

Further, in JP-A-59-163491, a dye, an alkaline agent, a sulfinic reducing agent, which is water-insoluble and is reduced to be a leuco compound which is dissolved and dyed on a white cloth or dyed cloth of cellulosic fibers, A method has been proposed in which a dyeing solution containing an inorganic metal compound having an alkaline and reducing property is padded, and a dyeing cloth having a feeling of being washed-out is obtained by performing a steam treatment without drying. There was a problem of being scarce.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a cellulose-based fiber cloth which can easily and efficiently provide a nonuniform dyeing effect excellent in reproducibility. It is intended to provide a uniform dyeing method.

[0006]

In order to achieve the above object, the present invention has the following constitution. That is, the first invention is a dye, an alkaline agent, a sulfinic reducing agent, and an alkaline reducing inorganic which are water-soluble and are reduced to be a leuco compound which is dissolved and dyed after raising a cellulosic fiber cloth. The gist is a non-uniform dyeing method of a cellulosic fiber cloth, which comprises applying a treatment liquid containing a metal compound and performing steam heat treatment without drying, and the second invention is that the cellulosic fiber cloth is water-soluble. Dyes, alkali agents, which are reduced and become leuco compounds that dissolve and dye
A non-uniform dyeing method for a cellulosic fiber cloth characterized by applying a treatment liquid containing a sulfinic reducing agent and an inorganic metal compound having an alkalinity and reducing property, subjecting it to steam heat treatment without drying, and then raising hair And

The present invention will be described in detail below.

The cellulosic fibers used in the present invention include cotton, hemp, rayon, acetate and the like, and cotton is the most preferable from the viewpoint of the effect of the invention and the utility value. The cellulosic fibers may be used alone or as a mixture with other fibers by blended spinning or interwoven knitting, and in the case of being mixed, it is desirable to contain the cellulosic fibers in an amount of 50% by weight or more. Examples of the fiber structure include woven, knitted, and non-woven fabrics.

For raising the hair in the present invention, a method using a cloth raising machine, a method using an emery raising machine wound with sandpaper or the like can be used, but a method using an emery raising machine is preferable.

In the present invention, the dye which is water-insoluble, is reduced, becomes a leuco compound and is dissolved and dyed,
Examples include vat dyes, sulfur dyes and sulfur vat dyes. When the total amount of the processing liquid is 100, such a dye has a dye content of 0.
It is preferable to use 01 to 10 parts by weight.

In the present invention, examples of the alkali agent include alkali metal hydroxides such as caustic soda and caustic, carbonates such as sodium carbonate and potassium carbonate.
Such an alkaline agent is 1 when the total amount of the treatment liquid is 100.
It is preferable to use ˜15 parts by weight.

In the present invention, examples of sulfinic reducing agents include hydrosulfite, zinc formaldehyde aldehyde sulfoxylate, and sodium formaldehyde hydrate sulfoxylate. It is preferable to use 1 to 15 parts by weight of such a sulfine-based reducing agent when the total amount of the treatment liquid is 100.

In the present invention, examples of the alkaline and reductive inorganic metal compound include sodium borohydride, potassium borohydride, gallium borohydride, thorium borohydride, beryllium borohydride, lithium borohydride. , Uranium borohydride, aluminum boron hydride, lithium aluminum hydride and the like. It is preferable to use 0.01 to 1 part by weight of such an alkaline and reducing inorganic metal compound when the total amount of the treatment liquid is 100.

The following will describe one embodiment of the present invention. A dye, an alkali agent, and a sulfinic reduction which are dyed on a napped cellulosic fiber cloth by dissolving a predetermined amount of water-soluble and reduced leuco compound to be dyed. Water is added to the agent and the inorganic metal compound having an alkaline reducing property to prepare a treatment liquid, which is applied by a padding method, a spray method, a roller method or the like, and dried at 100 to 107 ° C., 30 to
Steam heat treatment for 90 seconds. Then, washing with water, oxidation treatment, soaping, and washing with water are performed to obtain a non-uniformly dyed product.

Next, another embodiment of the present invention will be described. A dye, an alkali agent and a sulfinic dye, which are dyed by dissolving a predetermined amount of water-soluble and reduced leuco compound on a cellulosic fiber cloth and dyeing. Water is added to a reducing agent and an inorganic metal compound having an alkaline reducing property to prepare a treatment liquid, which is applied by a padding method, a spray method, a roller method, or the like, and dried at 100 to 107 ° C. without drying.
Steam heat treatment for 30 to 90 seconds. Next, washing with water, oxidation treatment,
After soaping and washing with water, raising is then performed to obtain a non-uniform dyed product.

Needless to say, a dyed cloth obtained by dyeing a cellulosic fiber cloth in advance may be used in order to obtain a non-uniform bead effect. In that case, a dye whose concentration does not decrease or discolor under the conditions of alkali and heat, for example, a direct dye or a naphthol dye is used.

[0017]

EXAMPLES The present invention will be described in more detail based on the following examples.

Example 1 20 warps and 20 wefts with a warp density of 108 /
A cotton woven fabric obtained by scouring, bleaching, and merging sack and weft density of 58 threads / sack was fluffed once using an emery raising machine (100 mesh).

Nihonrenren 3GC (Vat dye: Sumitomo Chemical Co., Ltd. product) 10.3 g / l, Mikethlen Olive T (Vat dye: Mitsui Toatsu Co., Ltd. product) 1.2 g / l,
Mikeslen brown GS (vat dye: product of Mitsui Toatsu) 8.2 g / l, caustic soda (flakes) 30 g /
1, redole C powder (sodium formaldehyde oxysulfate: manufactured by Sumitomo Chemical Co., Ltd.) 30 g / l, Benhit (potassium borohydride: manufactured by Morton Theokol) 10
A treatment liquid consisting of cc / l, 30 g / l of salt and water is prepared.

Next, the fluffed cotton woven fabric is padded with the treatment liquid at a squeezing ratio of 70% and immediately subjected to steam heat treatment under saturated steam at 102 ° C. for 60 seconds to obtain hydrogen peroxide (3
(5% solution) The product of Example 1 was obtained by oxidation treatment at 60 ° C. for 60 seconds with an oxidizing solution containing 30 g / l, soaping and washing with water.

Example 2 The same process as in Example 1 was carried out except that the same plain fabric as in Example 1 was used and the nap raising was performed after dyeing instead of the nap before dyeing, and the product of Example 2 was obtained. Obtained.

Comparative Example 1 A product of Comparative Example 1 was obtained using the same plain weave as in Example 1 except that the raising before dyeing was not carried out.

The products obtained in Examples 1 and 2 had a brownish shade of flicker, and Comparative Example 1
The product obtained in 1. had weak flicker.

[0024]

Industrial Applicability As described in detail above, the method of the present invention can easily and efficiently obtain a non-uniform effect with excellent reproducibility, and thus has great industrial value. In addition, the obtained product has an unprecedented dusty feel, and is extremely useful for casual uses and the like.

Claims (2)

[Claims] 1. A dye, an alkali agent, a sulfinic reducing agent, and an inorganic metal compound having an alkaline reducing property, which are soluble in water and reduced to a leuco compound after being dyed after raising a cellulosic fiber cloth. A nonuniform dyeing method for a cellulosic fiber cloth, which comprises applying a treatment liquid containing the same and performing steam heat treatment without drying. 2. A dye which is soluble in water and reduced to a leuco compound to be dissolved and dyed in a cellulosic fiber cloth,
Heterogeneous dyeing of cellulosic fiber cloth characterized by applying a treatment liquid containing an alkaline agent, a sulfin-based reducing agent and an alkaline and reducible inorganic metal compound, steam-heat treatment without drying, and then raising hair Law.