KR102347915B1 - Reducing cleaning composition for dyeing fiber - Google Patents

Abstract

It relates to a reducing detergent composition for dyeing washing, which can greatly improve work efficiency and washing fastness by shortening the process, since it can be carried out in an acid bath instead of a base bath at the time of reducing washing, and a method for manufacturing the same.

Description

Reducing detergent composition for washing dyeing and manufacturing method thereof {REDUCING CLEANING COMPOSITION FOR DYEING FIBER}

The present invention relates to a reducing detergent composition used for washing dyeing and a method for manufacturing the same, and more particularly, since it can be performed in an acid bath rather than a base bath during reduction washing, the working efficiency and washing fastness by shortening the process are greatly improved. It relates to a reducing detergent composition for washing dyeing that can be improved and a method for preparing the same.

In recent years, in textile processing, process management is carried out according to FA and LA to reduce cost and increase efficiency, and shortening and simplification of the process are rapidly progressing. In particular, this trend is prominent in the field of polyester fiber dyeing, and reasonable dyeing methods such as high-speed textile machinery have already progressed considerably.

Most of polyester fibers are treated in an alkali state in the entire process from spinning to sewing. In other words, in the spinning, spinning, weaving, and knitting processes, emulsions and sizing agents are used to increase productivity, so desizing and refining and bleaching are performed in an alkali bath in the pre-treatment process. In the process, the dispersed dye is fixed in an acid bath, and in the reduction washing process, the non-fixed dispersed dye is removed by reducing washing or soaping in an alkaline bath. Among these processes, only the dyeing process is treated in an acid bath, and all other processes are treated in an alkaline bath.

를 전후하여 이루어지며, 이보다 높은 온도에서 작업을 실시하면 환원제가 섬유 내부로 침투하든지, 염료가 밖으로 나오든지 하여 염색물의 탈색이 진행되기도 한다. 물론 염색, 환원 세정 후 원단의 최종 형태 안정 및 후가공을 위하여 다시 열처리를 하기 때문에 견뢰도는 다시 저하된다. 그러나 환원세정공정을 생략하고 열처리를 수행할 경우에는 견뢰도 저하 정도가 훨씬 심각하다.In general, dyeing of polyester using a disperse dye is made by a method in which the disperse dye enters the amorphous region of the polyester. Of course, in order for the dye to enter the fiber, the temperature must be higher than a certain temperature, and even after dyeing, the dye may come out again when the temperature exceeds a certain temperature. This phenomenon can also be seen in the phenomenon that the fastness is lowered by heat treatment after dyeing. Usually, it undergoes reduction washing after dyeing in a dyeing and processing plant to improve fastness by reducing and decomposing the chromophore of the residual dye particles attached to the surface without entering the fiber. Of course, the temperature of the reduction washing is 85

It is done before and after this, and if the work is performed at a higher temperature than this, the color of the dyed material may be discolored due to whether the reducing agent penetrates into the fiber or the dye comes out. Of course, after dyeing and reducing washing, the fastness is lowered again because heat treatment is performed again to stabilize the final shape of the fabric and post-processing. However, if the reduction cleaning process is omitted and heat treatment is performed, the degree of fastness deterioration is much more serious.

Currently, sodium hyposulfite and thiourea dioxide are used as reducing detergents. The sodium hyposulfite is a reducing bleach with a strong reducing power, and has no flammability, is relatively inexpensive, and has stability. In addition, the thiourea dioxide is expensive, has a property of hardening at room temperature when used, and is relatively unstable than hyposulfite.

Moreover, since these cleaners are supplied in the form of powder, a lot of dust, odors, etc. are generated in the working process, so there is a problem that deteriorates the working environment and threatens the health of workers.

Korean Patent Publication No. 2009-0056663 (2009.06.03)

The present invention was devised in view of the above points, and it improves process efficiency by fundamentally removing the cumbersome and harmful work process caused by the toxic powder-type bleach that is added to the neutralization process inevitably performed in the textile dyeing process. At the same time, an object of the present invention is to provide a reducing cleaning agent composition for dyeing and washing that can eliminate wastewater treatment costs generated in the neutralization process and excellent reducing power, and a method for manufacturing the same.

In order to solve the above problems, the reducing detergent composition for washing dyeing according to the present invention,

As a reducing cleaning composition for cleaning textile dye,

With respect to the total 100 parts by weight of the reducing detergent composition, sodium sulfite (sodium sulfite) 1 to 3 parts by weight, hydroxymethanesulfinic acid (HydroxyMethanesulfinic acid) 15 to 35 parts by weight and 0.5 to 10 parts by weight of a surfactant It may be included.

In one preferred embodiment, the sodium sulfite may be optionally included.

In one preferred embodiment, the surfactant is not particularly limited, and may be selected from anionic surfactants, nonionic surfactants, zwitterionic surfactants, and cationic surfactants.

In addition, the reducing detergent composition according to the present invention may be provided in the form of a liquid.

On the other hand, the present invention provides a method for producing the reducing detergent composition, specifically,

(1) adding water to a reaction tank having 50 to 80 weight and then raising the temperature to 30 degrees;

(2) preparing a mixture by adding 1 to 3 wt% of sodium sulfite to the reactor;

(3) reacting the mixture by adding 0.5 to 10% by weight of a surfactant; and

(4) hydroxymethane sulfinic acid (HydroxyMethanesulfinic acid) 15 to 35% by weight is added and the temperature is raised to 40 degrees to dissolve; may include.

In one preferred embodiment, step (4) may be performed until the temperature is gradually increased, but bubbles are removed to ensure transparency.

In one preferred embodiment, the step (2) may be performed selectively, and the steps (3) and (4) may be performed in any order.

The reducing detergent composition for washing dyeing according to the present invention and its manufacturing method improve process efficiency by fundamentally removing the cumbersome and harmful work process caused by the toxic powder-type bleach that is added to the neutralization process inevitably performed in the textile dyeing process. At the same time, it has the effect of reducing the wastewater treatment cost generated in the excellent reducing power and neutralization process.

1 is a flowchart showing a manufacturing process of a reducing detergent composition for washing dyeing according to an embodiment of the present invention;
2 to 4 are photos comparing the wash fastness according to the degree of dynamism of the multi-fiber (multi-fiber cross-woven fabric) of the dyed fabric after reducing and washing the dyed fabric using the dyeing detergent composition according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the embodiments of the present invention. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art. In the drawings, in order to clearly express the components of each device, the sizes such as width and thickness of the components are slightly enlarged. In the description of the drawings as a whole, it has been described from an observer's point of view, and when an element is referred to as being positioned on another element, this means that the element may be positioned directly on the other element or an additional element may be interposed between the elements. include In addition, those of ordinary skill in the art will be able to implement the spirit of the present invention in various other forms without departing from the technical spirit of the present invention. And, in the plurality of drawings, the same reference numerals refer to elements that are substantially the same as each other.

On the other hand, the singular expression described in the present invention should be understood to include a plural expression unless the context clearly indicates otherwise, and terms such as “include” or “have” refer to the described features, numbers, steps, and operations. , is intended to designate the existence of a component, part, or combination thereof, but does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof. should be understood In addition, in performing the method or the manufacturing method, each process constituting the method may occur differently from the specified order unless a specific order is clearly described in context. That is, each process may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

Hereinafter, in order to enable those of ordinary skill in the art to easily practice the present invention, preferred embodiments of the present invention will be described in detail.

As described above, the conventional reducing cleaning agent has a weak reducing power during fiber reduction compared to its strong reducing power, and because there is a lot of water treatment in the neutralization process, a large amount of wastewater is generated and environmental pollution occurs. Since dust and odors are generated, there is a problem that the working environment is deteriorated and the health of workers is threatened.

Therefore, in the present invention, since reduction cleaning is performed in a weakly acidic environment, a reduction cleaning agent composition for dyeing cleaning is provided so that a separate neutralization process that generates a harmful environment and contamination can be removed, and the above-mentioned problems were sought.

Specifically, the present invention is a reduced cleaning composition for cleaning textile dye, with respect to 100 parts by weight of the total reducing detergent composition, sodium sulfite (sodium sulfite) 1 to 3 parts by weight, hydroxymethane sulfinic acid (HydroxyMethanesulfinic acid) 15 to 35 It is possible to provide a reducing cleaning composition for washing textile dye containing 0.5 to 10 parts by weight of the surfactant and by weight.

1 is a flowchart schematically showing the manufacturing process of the reducing detergent composition for washing dyeing according to an embodiment of the present invention.

Referring to Figure 1, the manufacturing process of the reducing detergent composition for washing dyeing according to the present invention is a step of adding water to a reaction tank and raising the temperature to 30 ° C (S100), with respect to 100 parts by weight of the total reducing detergent composition, sodium sulfite ( sodium sulfite) 1 to 3 parts by weight (S200), 0.5 to 10 parts by weight of surfactant (S300), 15 to 35 parts by weight of hydroxymethanesulfinic acid (S400) and The step (S500) of stirring by raising the temperature of the reaction tank to 40 °C proceeds sequentially.

In the step (S100), for example, water is added to a reaction tank having a weight of 60 to 78 to prepare, and preferably, 1 to 3 parts by weight of the sodium sulfite in the step (S200), and more Preferably, the sodium sulfite may be included in an amount of 2 parts by weight. At this time, according to the present invention, the sodium sulfite does not significantly affect the cleaning effect, but contributes to storage stabilization of the ring cleaning agent.

In some cases, the step S200 may be selectively performed, and the steps S300 and S400 may be performed in any order.

Here, according to the present invention, in the step (S300), the surfactant may be included in an amount of 0.5 to 10 parts by weight. Preferably it may be included in 1 to 3 parts by weight, more preferably in 1.5 to 2 parts by weight. At this time, when the surfactant is included in less than 0.5 parts by weight, it is difficult to obtain a desired cleaning effect, and when it is included in more than 10 parts by weight, the fastness to washing and rubbing may be reduced or washing may not be possible. Suitable.

In addition, 15 to 35 parts by weight of the hydroxymethanesulfinic acid (HydroxyMethanesulfinic acid) in the step (S400) may be included. Preferably, it may be included in an amount of 20 to 30 parts by weight, and more preferably, it may be included in an amount of 25 to 27 parts by weight. At this time, when the hydroxymethanesulfinic acid is included in less than 15 parts by weight, it is difficult to obtain a desired reducing effect, and when it is included in excess of 35 parts by weight, it is unnecessarily excessively added and the problem of cost increase Therefore, the above range is suitable.

In addition, the step (S500) is performed while raising the temperature to about 40° C. so that the hydroxymethanesulfinic acid is dissolved, and bubbles generated during the reaction are completely removed to have a predetermined viscosity and transparency like water (about 90 % or more) is maintained.

According to the present invention, glacial acetic acid, dyed acid, etc. are added at the time of dyeing so that the pH is about 4 to 5, and the pH of the dye bath is maintained at about 5 to 5.5 when the dyeing is finished.

After dyeing and reducing washing, a little acid is added to adjust the pH of the salt bath to around 4.6, and then the reducing detergent composition for dyeing washing according to the present invention in liquid form is added at 80 to 90° C. for 20 to 25 minutes. It is carried out by mixing. At this time, since the pH of the salt bath is maintained at about 6 when the reduction washing is completed, a separate neutralization process is not required unlike the prior art.

Furthermore, since the reducing detergent composition for washing dyeing according to the present invention _{is provided in a liquid form, unlike the conventionally used sodium hydrosulfite (Na 2} S ₂ O ₄ ), there is no need to dissolve the powder in the salt solution. This provides the advantage that this does not occur.

In addition, the reducing detergent composition for washing dyeing according to the present invention can prevent discoloration of the dye during distribution after the reducing washing process (R/C). _{That is, sodium hydrosulfite (Na 2} S ₂ O ₄ ) in powder form used for conventional reduction cleaning is mixed with butylated hydroxyl toluene or a phenolic compound from packaging materials in the storage and distribution process such as the drying process. Oxygen and nitrogen oxide in the air react to cause yellowing (mainly occurring in the dyed object in an alkaline state and the neutralization process is not performed properly after dyeing) in some cases, but the reducing cleaning agent composition for cleaning according to the present invention Since silver uses a polar solvent, it is possible to prevent yellowing by inhibiting the reaction with nitrogen oxide and oxidation of the object to be dyed.

On the other hand, according to the present invention, the reducing detergent composition for washing dyeing can effectively decompose and wash the waste dye adsorbed inside the dyeing machine after being tarred.

Hereinafter, a preferred embodiment (example) is presented to help the understanding of the present invention. However, the following examples are provided only to help the understanding of the present invention, and the present invention is not limited by the following experimental examples.

[Example]

<Example 1>

In the dyeing of an object made of 100% polyester fiber and mixed fibers (T/R, T/C), the preparation for reduction washing is in a reaction tank with 60 to 78 weight of water, 2% by weight of sodium sulfite according to Table 1 below, 2 wt% of a surfactant and 27 wt% of hydroxymethanesulfinic acid were sequentially added and mixed to prepare a reducing detergent composition for dyeing and cleaning according to the present invention, but the temperature of the reaction tank to which water is added is 30 ° C. Maintain and the hydroxymethane sulfinic acid (HydroxyMethanesulfinic acid) is prepared by stirring while raising the temperature to 40 ℃ when added. At this time, after waiting until the bubbles generated during the reaction are removed, the transparency was checked to prepare a reducing detergent composition for final dyeing washing.

<Examples 2-6>

A reducing detergent composition for washing dyeing was prepared in the same manner as in Example 1, except that the composition was configured as shown in Table 1 below.

Hydroxymethanesulfinic acid (wt%) Sodium sulfite (wt%) Surfactant (wt%) Example 1 27 2 2 Example 2 15 2 2 Example 3 32 2 1.5 Example 4 25 - 2 Example 5 25 3 2 Example 6 27 2 4 Comparative Example 1 10 2 2.5 Comparative Example 2 40 2 2 Comparative Example 3 12 2 2.5 Comparative Example 4 27 2 0.4 Comparative Example 5 27 2 10.2

<Comparative Examples 1 to 5>

A reducing detergent composition for washing dyeing was prepared in the same manner as in Example 1, except that the composition was configured as shown in Table 1.

[Experimental example]

After the fabric was dyed using the disperse dye SUNCORN BLACK S-PW, the reducing detergent compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 5 were added under the conditions according to Table 2 below, respectively, and reduced washing treatment was performed. At this time, the liquid ratio was 10:1.

fair dyes and preparations Weight to fabric (g/%) Input (kg) dye treatment SUNCORN BLACK S-PW 5.00 24.81 dispensing dispersant 1.00 4.962 Glacial acetic acid (50%) 2.00 9.924 reduction cleaning reducing detergent 2.00 9.924 Glacial acetic acid (50%) 0.3 1.489

*Fabric weight: 496.20kg (high pressure), liquid ratio 10:1 (water: 4.962L)

Wash fastness test

Washing fastness was measured using the reducing detergent compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 5 and shown in Table 3 above.

Here, 4% detergent was used at 40° C. for 30 minutes, and 10 steel balls were inserted and washed. The degree of color fading for washing and the degree of contamination with other textile products were divided into 5 grades and displayed in Table 3, and a higher grade indicates no discoloration or color transfer due to washing.

division Washing fastness Friction fastness fastness to sunlight Sweat fastness case wet Example 1 5 5 4 5 5 Example 2 4 5 4 4 4 Example 3 5 5 4 5 5 Example 4 4 5 4 5 5 Example 5 5 5 4 5 5 Example 6 4 4 3 4 4 Comparative Example 1 3 3 3 2 3 Comparative Example 2 3 3 2 5 5 Comparative Example 3 3 4 3 4 4 Comparative Example 4 3 3 3 3 3 Comparative Example 5 4 4 3 4 4

2 to 4 are photographs showing the results of fastness to washing of each synthetic fiber (dyed fabrics) after reduction washing using the reducing detergent composition according to an embodiment of the present invention. Each dyed fabric was put in a washing tub together with the multi-fiber (multi-fiber cross-woven fabric) and washed using 4% detergent at 40° C. for 30 minutes to measure the degree of dye transfer of the multi-fiber (multi-fiber cross-woven fabric).

That is, Figure 2 is a polyester and rayon or cotton blend fiber, Figure 3 polyester fiber, Figure 4 is a result of the fastness of the dyed product according to the reduction washing of the spandex fiber (multi-fiber (multi-fiber cross-woven fabric) is Acetate, Cotton, Nylon, Polyester, Acrylic, and Wool are joined together, and it refers to the fabric for the washing fastness test manufactured to check the color transfer on various types of fabrics at once when testing the color fastness to washing).

As shown in these figures, when the liquid reducing detergent composition according to the present invention is used, it can be confirmed that the cleaning effect is relatively excellent in each fiber and less color transfer is observed compared to the case of using the conventional reducing detergent.

Friction fastness test

Using the reducing detergent compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 5, the friction fastness was measured and shown in Table 3 above.

Here, in dry and wet conditions, the strength against friction was measured and divided into a total of 5 grades, and the higher the grade, the greater the strength against friction.

light fastness test

Using the reducing detergent compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 5, the light fastness was measured and shown in Table 3 above.

Here, a higher grade indicates less fading to sunlight.

Sweat fastness test

Sweat fastness was measured using the reducing detergent compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 5 and shown in Table 3 above.

Here, the color change and the degree of contamination of other fibers were evaluated for acidic sweat and alkaline sweat, respectively, and the results were divided into 5 grades and the results are displayed in Table 5. indicates no

As shown in Table 3 above, in the case of Example 1 containing 27 wt% of liquid hydroxymethanesulfinic acid according to the present invention, the best physical properties such as washing fastness were exhibited, and liquid hydroxymethanesulfinic acid was In the case of Example 2 containing 15% by weight, some decrease in physical properties except for fastness to friction was shown. In addition, in the case of Example 4, which did not contain sodium sulfite, it can be seen that the washing effect was not significantly affected except for the washing fastness.

However, in the case of Comparative Example 1 containing 10% by weight of liquid hydroxymethanesulfinic acid according to the present invention, it can be confirmed that a large decrease in all physical properties, including fastness to washing, is shown. In addition, even under the same conditions as in Example 1, Comparative Examples 4 and 5 containing the surfactant in 0.4 wt% and 10.2 wt% showed a decrease in all physical properties, respectively.

Therefore, it can be seen that the cleaning effect is greatly affected depending on whether the liquid hydroxymethanesulfinic acid and the surfactant are included and the content range according to the present invention.

As mentioned above, although the present invention has been described in detail with reference to preferred embodiments and experimental examples, those of ordinary skill in the art to which the present invention pertains may realize that the present invention may be implemented in other specific forms without changing the technical spirit or essential features. You will understand that you can. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and not only the claims described below, but also all modifications equivalently or equivalently to the claims described below belong to the scope of the spirit of the present invention. will be.

Claims (8)

As a reducing cleaning composition for cleaning textile dye,
With respect to the total 100 parts by weight of the reducing cleaning composition, sodium sulfite (sodium sulfite) 2 parts by weight, hydroxymethane sulfinic acid (HydroxyMethanesulfinic acid) 15 to 35 parts by weight and surfactant 1 to 3 parts by weight, in the form of a liquid A reducing cleaning composition for cleaning textile dye provided. delete The method of claim 1,
The surfactant is a reducing cleaning composition for textile dyeing, characterized in that it is selected from anionic surfactants, nonionic surfactants, zwitterionic surfactants and cationic surfactants. delete A method for manufacturing a reducing detergent for textile dye cleaning, comprising:
(1) adding water to a reaction tank having 50 to 80 kg and raising the temperature to 30°C;
(2) preparing a mixture by adding 2 wt% of sodium sulfite to the reactor;
(3) reacting by adding 1 to 3% by weight of a surfactant to the mixture; and
(4) hydroxymethane sulfinic acid (HydroxyMethanesulfinic acid) 15 to 35% by weight is added, heated to 40 ° C. and dissolved to gradually increase the temperature, and the air bubbles are removed and transparency is ensured; including; A method for manufacturing a liquid reducing detergent for textile dye cleaning. delete 6. The method of claim 5,
The step (2) is a method for producing a reducing detergent for textile dyeing, characterized in that it is performed selectively. 6. The method of claim 5,
The step (3) and step (4) is a method for manufacturing a reducing detergent for textile dyeing, characterized in that it is performed in an arbitrary order.

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