KR20090056663A

KR20090056663A - Reducing cleaning composition

Info

Publication number: KR20090056663A
Application number: KR1020070123910A
Authority: KR
Inventors: 한종수
Original assignee: 주식회사 태경에프씨
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2009-06-03

Abstract

A reducing cleaning composition is provided to ensure excellent reducing power compared with conventional reducing cleaning composition, to improve color fastness and reproducibility, and to exhibit cleaning effect, workability enhancement and reduction of fabricating process. A reducing cleaning composition comprises thiourea dioxide of 40-55 weight%, soda ash of 30-40 weight%, sodium tripoly phosphate of 10 weight%, and surfactant(FCT-10) of 5 weight%. The reducing cleaning is performed in the following conditions as: (i) dyed goods containing dye 1% o.w.f.(on the weight of fiber) or more performs certainly reduction clearing; but (ii) dyed goods containing dye 1% o.w.f.(on the weight of fiber) or less is washed(80~90 °C) and soaped(soaping preparation 2g/l soda ash(sodium carbonate) 1g/l 80 °Cx 10 minute).

Description

Reducing cleaning composition

The present invention relates to a reducing cleaning composition, and more particularly, Thiourea Dioxide, Soda Ash, Sodium Tripoly Phosphate; And a surfactant (FCT-10), and relates to a reducing cleaning composition used in a reduction cleaning step of improving dyeing fastness, washing fastness and friction fastness during fiber dyeing processing steps.

In recent years, process management has been carried out in accordance with FA and LA to reduce costs and improve efficiency in textile processing. In particular, this trend is prominent in the field of dyeing of polyester fibers, and the rational dyeing method such as the high speed of the textile machine is already advanced considerably.

Polyester fibers are treated in an alkali state in most of the processes from spinning to sewing. In other words, in the spinning, spinning, weaving, and weaving processes, emulsions and thinners are used to increase productivity, so pre-treatment is carried out in the alkali bath in the pre-treatment process. In the acid bath, the dispersion dye is fixed, and in the reduction washing process, the unfixed dispersion dye is removed by washing or soaping in the alkaline bath. Of these processes, only the dyeing process is carried out in an acid bath and all other processes are treated in an alkaline bath.

Therefore, instead of disperse dyeing polyester fiber in acidic bath, if disperse dyeing is possible in alkaline bath, it will be spotlighted by new rational dyeing method. In other words, dyeing in an alkaline bath not only simplifies the process but also reduces the influence of residual alkali in the previous process, which is a problem in the dyeing process of acidic baths. As the cleaning effect is increased, the quality of the dyeing product can be expected to be improved.

In general, dyeing of polyester using a disperse dye is performed by a method in which the disperse dye enters the amorphous region of the polyester. Of course, the dye must be above a certain temperature in order to enter the inside of the fiber, the dye may come out again after a certain temperature even after dyeing. This phenomenon can also be seen in the phenomenon that the fastness is lowered by heat treatment after dyeing. After dyeing at the dyeing and processing plant is usually reduced washing to reduce the chromophore of the residual dye particles attached to the surface can not enter the fiber to improve the fastness. Of course, the reduction washing temperature is about 80 ℃, and if the operation at a higher temperature than this, the reducing agent penetrates into the fiber, the dye may come out, or the color of the dye may proceed. Of course, the color fastness is lowered again because the heat treatment again for the final shape stability and post-processing of the fabric after dyeing, reduction and washing. However, when the heat treatment is performed without the reduction washing process, the degree of fastness is much more severe.

Sodium Hydrosulfite, Thiourea Dioxide, and Ronglite-C (sodium sulfoxylate formaldehyde) are currently being used as reducing cleaners. The sodium hyposulfite is a reducing bleaching agent with strong reducing power, which is not flammable and relatively inexpensive and stable, but has a low reducing power when fiber reduction and a large amount of water treatment. In addition, the thiourea dioxide is expensive, has a property of solidifying at room temperature when used, and is relatively unstable than hyposulfite. Finally, the Ronglite-C is expensive and there are many problems in the light color reduction operation.

Currently, the above-mentioned reducing cleaning agents are mainly used, but the above-mentioned problems are exhibited. In recent years, as the buyer's requirements for fastness and product performance become more demanding, appropriate reducing detergents are required to meet this requirement.

It is therefore an object of the present invention to provide a novel reducing cleaning composition for solving both the economic and technical problems of the conventional reducing cleaning agents described above.

Compositions used for reduction cleaning in the fiber dyeing process of the present invention include:

40-55 wt% Thiourea Dioxide;

30-40% by weight of soda ash;

10% by weight Sodium Tripoly Phosphate; And

5% by weight of surfactant (FCT-10).

The thiourea dioxide plays a role of a basic reducing agent in the reducing cleaning composition of the present invention, the soda ash maintains the unstable properties of the reducing agent, reinforces the touch of the textile fabric, the tripoly phosphate sodium at the time of reduction The state of water is made to be in an optimal state so that the reducing agent can work in the optimal state. Finally, the (FCT-10) is a surfactant developed by the applicant, which helps the reducing agent to reduce the fiber, Increases efficiency and reduces wastewater generation by up to 15%.

When the reducing cleaning composition according to the present invention is used, the reducing power is superior to the conventional reducing cleaning agent, and the waste water treatment cost is reduced by about 15%, and economically, the cost reduction effect is about 20% compared with the conventional reducing agent. In addition to improving the fastness and reproducibility, it can exhibit various effects such as machine cleaning effect, workability improvement and process shortening.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible.

Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

The present invention may vary slightly depending on the degree of automation for each dyeing machine applied, but the basic program of the dyeing process that can be generally applied is as follows.

1. Heat the required amount of softened water to 60 ℃ and add salts without adding preparation etc. and circulate the salt bath or salts for about 10 minutes.

2. Salt circulating dyeing machine (Package, Cheese, Beam, etc.): In order to drain the air in the salted water, apply a constant pressure of 2 ～ 3㎏ / ㎠ and raise the temperature to 110 ~ 120 ℃ if necessary, and make the time more than 10 minutes.

3. Textile circulation dyeing machines (Jigger, Winch, liquids, etc.): Treat the fibers as needed to completely immerse the fibers in water.

4. Then add 2 g / l of yuan, 1 cc / l of acetic acid (50%), and a homogenizing aid.

5. After about 5 minutes, the dye dispersion is added through a thin network.

-> Dye can be injected all at once.

6. After dye injection, keep the temperature at 60 ℃ for about 10 minutes to achieve dye averaging.

7. After 10 minutes, check the pH. If the pH is over 6, add acetic acid and adjust the pH to 5.5 or less.

8. After checking the pH, start the temperature according to the dyeing program.

9. If there is no abnormality, stain for a predetermined time according to the program.

10. Sampling is performed to see the dyed color at the end of the predetermined time.

Reduction cleaning in dyeing of 100% polyester fiber

40-55 wt% Thiourea Dioxide;

30-40% by weight of soda ash;

10% by weight Sodium Tripoly Phosphate; And

A composition according to the invention comprising 5% by weight of surfactant (FCT-10) is carried out under the following conditions:

-Dyeing at least 1% o.w.f. (on the weight of fiber) must be done.

Dye 1% o.w.f. The following is a simple water washing (80-90 degreeC) and soaping degree treatment (2 g / L soda ash 1g / L 80 degreeC * 10 minutes prepared by Soaping).

In cellulose blends, reduction and washing of the disperse dyes must be performed to remove cellulose (cotton, hemp and rayon) from the dye except for dyeing with bat dye or sulfur dye.

As described above, reduction and washing were performed using the composition according to the present invention, thereby obtaining excellent reducing power compared to the conventional reducing detergent, and saving about 15% of wastewater treatment costs, and economically, 20% compared with the conventional reducing agent. There was a cost saving effect. In addition to the improvement of color fastness and reproducibility, various effects such as machine cleaning effect, workability improvement and process shortening were obtained.

Claims

40-55 wt% Thiourea Dioxide;

30-40% by weight of soda ash;

10% by weight Sodium Tripoly Phosphate; And

A reducing cleaning composition comprising 5% by weight of surfactant (FCT-10).