JPH055286A - Dyeing of cellulosic fiber structure to worn-out style - Google Patents

Abstract

PURPOSE:To impart a cellulosic fiber structure with a natural worn-out feeling by applying a treating liquid containing a quaternary ammonium base to the cellulosic fiber structure in the presence of an alkali, squeezing the applied liquid, quickly drying the structure to effect the migration of the treating liquid and dyeing the product. CONSTITUTION:A structure of a cellulosic fiber (especially cotton fiber) is passed through a treating liquid containing a quaternary ammonium base in the presence of an alkali (preferably caustic soda), squeezed, quickly dried to effect the migration of the treating liquid and the uneven application of the compound to the structure. The product is partly cationized and dyed to effect uneven dyeing of the structure and easily obtain the objective cellulosic fiber structure having worn-out feeling in high reproducibility. A fiber structure can be dyed to any color by this process and the product is suitable for casual use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dyeing method for washing and dyeing a cellulosic fiber structure, and more specifically, it gives a feeling of being washed or worn by pretreatment before dyeing, and also has fastness. The present invention relates to an excellent wash-finish dyeing method for a cellulosic fiber structure.

[0002]

2. Description of the Related Art Generally, it is desired that a dyed product has little discoloration after repeated washing, that is, dyed firmly so as not to be washed. However, in the fashion trends of young people these days, the feeling of being washed or worn is preferred, such as blue denim. In particular, casual pants called bleach-out denim are those in which a twill fabric dyed with indigo dye or its sewn product is decolorized by using a bleaching agent. Furthermore, I washed not only the blue of the indigo dye but also the color denim of various hues.
In other words, there is a growing tendency to favor products that feel bleached out.

In order to meet such demands, conventionally, after dyeing with a reactive dye and then exposed to chlorine, or after dyeing with a vat dye and then exposed to chlorine, there are defects.
That is, in the former case, it is generally difficult to control the density of the dyed cloth because of the poor chlorine fastness of the reactive dye, and in the latter case, the chlorine fastness is too good and the bleached-out feeling is hard to appear. In any case, the bleaching process is a batch method such as Wins and it takes a long time, and even the dye left unbleached because it is decolorized using a bleaching agent is affected by the bleaching agent, and the fastness is descend. Further, since sodium hypochlorite or the like is used as a bleaching agent, there is a drawback that the workability is poor due to the problem of odor.

As another method, in the bleach-out finish, a method of dyeing only the ridges of the cloth, that is, only the surface of the cloth by using a gravure roll or a method of fixing the dye after water application after dye application But there are
There is a problem with reproducibility.

In order to solve these problems, Japanese Unexamined Patent Publication No.
No. 9-163491 discloses a dye, an alkali agent, a sulfinic reducing agent, and an inorganic inorganic having a reducing property, which are water-insoluble and are dissolved into a leuco compound to be dissolved and dyed on a white cloth or dyed cloth of cellulosic fiber. A method has been proposed in which a dyeing solution containing a metal compound is padded and a steaming treatment is performed without drying to obtain a dyed fabric having a feeling of being washed, but since only vat dyes, sulfur dyes, sulfurized vat dyes, etc. can be used, hues Is limited, and the vat dye or the like is decomposed by the reducing agent, so that the dye concentration gradually decreases and tailing occurs.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems in the case of imparting a natural worn-out and washed appearance to a cellulosic fiber structure. is there.

That is, the present invention provides a dyeing method capable of easily and uniformly imparting a natural and worn-out wash feeling to a cellulosic fiber structure and enabling various hues. .

[0008]

[Means for Solving the Problems] The above object is to pass a cellulosic fiber structure through a treatment liquid containing a quaternary ammonium salt group-containing compound capable of reacting covalently with a cellulosic fiber in the presence of an alkali. This is accomplished by a wash-wash dyeing method for cellulosic fiber structures, which comprises rapidly drying after squeezing to cause migration in the treatment liquid, and then dyeing.

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. Among them, 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 yarns, woven fabrics, knitted fabrics, non-woven fabrics, and the like.

Examples of the quaternary ammonium salt group-containing compound used in the present invention include the following. Those having a chlorohydrin group represented by the following formula. (For example, WASESTESS N-60 manufactured by Nagase Chemical Industry Co., Ltd., Cathylene UK manufactured by Yushisha Co., Ltd.).

[Chemical 1]

[Chemical 2] Those having an epoxy group represented by the following formula.

[Chemical 3] Those having a triazine group represented by the following formula.

[Chemical 4]

This quaternary ammonium salt group-containing compound is used as an active ingredient in an amount of 0.4 to 1 relative to the weight of the fiber structure itself.
0% by weight, preferably 2 to 8% by weight is used. If it is less than 2% by weight, the feeling of washing cannot be obtained, while if it is 8% by weight or more, the texture becomes coarse and hard.

An alkali catalyst is used to favorably proceed the reaction of the quaternary ammonium salt group-containing compound. As the alkali catalyst, alkali metal hydroxides, alkali metal hydroxides, alkali metal carbonates and the like can be used, but caustic soda is preferably used. The alkali catalyst is used in an amount of 10 to 100% by weight based on the quaternary ammonium salt group-containing compound.

Next, an embodiment in which the above-mentioned quaternary ammonium salt group-containing compound is applied to the cellulosic fiber structure will be described. Water is added to a predetermined amount of the quaternary ammonium salt group-containing compound and an alkali catalyst to form a treatment liquid. It is made and applied to the fiber structure by the padding method. Next 130-1
When dried rapidly at 70 ° C to cause migration in the treatment liquid, and then subjected to dry heat or moist heat treatment at 100 to 150 ° C, the quaternary ammonium salt group-containing compound is imparted to the plaque and partially cationized fiber. A structure is obtained.

Next, in the present invention, the partially cationized cellulosic fiber structure thus obtained is dyed with various dyes, and the dyeing properties of the cationized portion and the non-cationized portion are dyed. The difference is used to create a wash-out tone. Reactive dyes, 1,2-type gold-containing dyes, acid dyes, chrome dyes and the like are used as dyes, and they are dyed by a continuous method or a dipping method.

After dyeing, a masking agent treatment is carried out if necessary. The masking agent is not particularly limited, and examples thereof include anionic softeners, compounds having a phenolic hydroxyl group, and the like.

[Chemical 5] (However, n is an integer of 2 to 6) is preferably used. The masking agent is used as an active ingredient in an amount of 0.5 to 5% by weight based on the weight of the fiber structure. By carrying out such a masking agent treatment, its antifouling property (complete prevention property of recontamination during washing) can be enhanced.

[0017]

Since the present invention is constituted as described above, the quaternary ammonium salt group-containing compound is imparted to the spots by migration and partially cationized, and when this is dyed, the cationized portion is obtained. The dye adheres to the spots due to the difference in the dyeing property of the part which is not marked, and a wash-washed product can be obtained.

[0018]

EXAMPLES The present invention will be described in detail below based on examples.

Example 1 A cotton twill fabric with warp 20th count single yarn, density warp 108 yarns / inch,
58 pieces of weft / inch are fried, desizing, scouring,
Bleached and mercerized.

A treatment liquid containing 100 g / l of Weistex 60 (trademark, manufactured by Nagase Kasei Co., Ltd., containing 60% of active ingredient) as the quaternary ammonium salt group-containing compound and 40 g / l of caustic soda as the alkali catalyst. After passing through the inside, squeezing to a pickup rate of 60%, 140 ° C
It was dried for 2 minutes in order to cause migration in the treatment liquid, and then heat treated at 150 ° C. for 3 minutes to perform soaping and drying.

Next, the twill fabric is used as a reactive dye in Cib.
acron Yellow 6G (Ciba-Geig
y (manufactured by Y Corp.) 8 g / l, Cibac as a reactive dye
ron Blue 4GN (Ciba Geigy
(Manufactured by Co., Ltd.) 10 g / l, urea 50 g / as a moisturizer
1, soda ash 20 g / l as an alkali and Diatex DY-60 (manufactured by Nagase Kasei Co., Ltd.) 8 g / l as a reducing agent were passed through, and after squeezing to a pickup rate of 60%, 102 Steam treatment was performed at 45 ° C. for 45 seconds, followed by soaping and drying.

Next, the twill fabric was passed through a treatment liquid consisting of 30 g / l of San Softer FX (manufactured by Nika Kagaku Co., Ltd.) as an anionic softening agent, squeezed to a pickup rate of 60%, and then 120 ° C. After drying for 2 minutes, the product of Example 1 was obtained.

The product obtained in Example 1 was of a wash-cleaning tone with the dye adhering to the spots.

[0024]

As described above, according to the method of the present invention, it is not difficult to control the dyeing density as in the conventional method, the process time is short, the odor is not generated, and the wash feeling is excellent and reproducible. It is possible to achieve certain processing continuously, and its industrial utility value is great.

Further, the obtained product can have various hues, has an unprecedented washing feeling, and is extremely useful for casual use.

Claims (1)

Claim: What is claimed is: 1. A cellulosic fiber structure capable of reacting covalently with a cellulosic fiber in the presence of an alkali.
A washing and dyeing method for a cellulosic fiber structure, which comprises passing through a treatment liquid containing a compound containing a primary ammonium base, squeezing the liquid, rapidly drying it to cause migration in the treatment liquid, and then dyeing.