KR101321526B1 - Process Of Dyeing Cotton Textiles Using Enzyme - Google Patents

Abstract

The present invention relates to a dyeing and processing method of cotton fiber products using enzymes, by adding enzymes in refining and bleaching steps to replace conventional NaOH and dyeing in the same bath without draining the post-bleaching treatment solution. It is a dyeing processing method.

Description

Process of Dyeing Cotton Textiles Using Enzyme

The present invention relates to a processing method using an enzyme in a serial process of refining and bleaching in dyeing processing of cotton fiber products.

The textile material sector, which forms a high value-added market in the textile industry, is an eco-friendly / human-friendly natural material and a natural composite material field.In the textile industry, as the economy grows rapidly and consumer living standards improve, the textile industry is extremely light, comfortable, and eco-friendly. The technical demand for textile products made of human-friendly materials is increasing.

In particular, research on eco-friendly / human-friendly natural materials is being conducted along with research on eco-friendly / human-friendly natural materials, and methods for using enzymes in dyeing processing have been proposed. Enzyme has been introduced into the textile industry since amylase has been used in cotton and cotton blends during the stage of cotton fiber decomposing starch after the use of adhesives required for weaving. Due to the brilliant development of biotechnology, interest and application in the textile industry is expanding.

The advantage of the enzyme application in the textile industry is that the enzyme itself is a natural product, so it is biodegradable, and it reacts at a pH close to neutral so that the treatment solution does not cause environmental problems. The damage of the is minimized, the effect is small enough and has the advantage of energy saving effect due to low temperature reaction. In particular, cellulose-based natural fibers such as cotton and hemp have become important factors in improving product quality, such as increasing gloss by enzymatic treatment and smoothing the surface.

Enzymes take the mainstream in detergents that clean clothes by cleaning the dirt of the clothes, which include protease (hydrolase) that breaks down proteins to remove protein dirt, and lipases that break down fat. Degrading enzymes) and amylases that degrade starch.

Republic of Korea Patent No. 10-0785827 prepared a fabric by weaving natural color cotton, the fabric is put into the enzyme enzyme pectinase 0.3 ~ 1.5% (owf) and 1.1 ~ 2.0g / L surfactant was added to 80 ~ 90 ℃ It provides a method of manufacturing an environmentally friendly towel using enzyme refining to refine and dehydrate after drying for 20-30 minutes in the refining, Republic of Korea Patent No. 10-0861457 containing pectin and lignin present in the marine crops In the method of manufacturing the bast fiber through a refining process to remove impurities, preparing a refining liquid containing Penibacillus Taejonensis IH-9 (Accession No .: KCTC 11223 BP) as a microorganism to prepare the basin crop Pectinase is added as a glycolysis enzyme to the refining solution while providing a method for producing a bast fiber immersed in the refining solution and refining in the range of 20 ° C to 100 ° C.

The prior art is performing a refining process by adding a surfactant or a microorganism in addition to the enzyme, there is a risk of pollution and increased costs, and not only demanding to meet the microbial conditions, but also limited to the refining process, a series of dyeing process There was an inadequate problem to apply across.

Therefore, according to the present invention, it is possible to efficiently remove the residual fruit trees in the treatment liquid, to prevent uneven salting during the dyeing process, and to decompose reactive dyes unfixed in the textile products in the dyeing step, reducing the number of washings and the fastness It is a technical task to provide an environmentally friendly process that can improve the efficiency of the process.

Therefore, according to the present invention, in the dyeing and processing method of the cotton fiber product using the enzyme,

Polyoxyethylene alkyl ether-based scouring agent and phosphate chelating agent were added to a bath in which cotton fiber products were immersed, and the temperature was raised to 50-60 ° C., followed by 1.0-2.0 g / l of cellulase, followed by 30-40 minutes of scouring. step;

The temperature was raised to 70 ~ 80 ℃ phosphate-based stabilizer, _{0.1 ~ 0.5g / ℓ, Na 2} CO 3 1.0 ~ 3.0g / ℓ, triacetin 2.0 ~ 5.0g / ℓ, hydrogen peroxide 4.0 ~ 8.0g / ℓ and bleach 0.1-0.3 After the addition of g / L after treatment for 30 to 40 minutes, and then cooled to room temperature, the temperature is increased again and after treatment for 10 to 20 minutes at 80 ~ 90 ℃, then rapidly cooled to 45 ~ 55 ℃ and catalase 1.0 ~ 3.0 g / L Adding and bleaching treatment for 10 to 20 minutes; And

Cooling at 35 ~ 45 ℃, adding dye, leveling agent, forget-me-not, warming to 55 ~ 65 ℃, adding soda ash, and dyeing process of cotton fiber product using enzyme, characterized in that it consists of dyeing process for 50 ~ 70 minutes. A method is provided.

Hereinafter, the present invention will be described in more detail.

In the dyeing and processing method of the cotton fiber product using the enzyme of the present invention, after the cotton fiber product is refined in a treatment bath containing cellulase, without stabilization of the treatment bath, stabilizer, Na ₂ CO ₃ , triacetin, hydrogen peroxide, bleach, It is a dyeing process that adds catalase, bleaches and dyes.

In particular, by adding the enzyme in the refining step and the bleaching step, it is a dyeing process that can be dyed in the same bath without replacing the conventional NaOH and draining the treatment solution after bleaching.

First, to explain the refining step, a polyoxyethylene alkyleter refining penetrant and a phosphate acid chelating agent are added to a bath in which cotton fiber products are immersed, and then heated to 50-60 ° C., followed by cellulase 1.0. It is treated for 30 ~ 40 minutes after adding ~ 2.0g / ℓ. 0.3 to 1.0 g / l of polyoxyethylene alkyleter refining penetrant and 0.5 to 1.5 g / l of phosphate chelating agent. Cellulase added here acts as a hair scavenger that decomposes cotton wool products. Cellulase can react with substances to be removed by adding 1.0-2.0 g / l. It is minimized and is preferable for maintaining the strength of the fiber. Since the conventional method of refining cotton fiber is a strong alkali method using NaOH at high temperature (100 ° C.), the cotton fiber is embrittled, and thus the strength is reduced and the weight of the cloth is reduced. The use of water is also a problem because it requires washing with water several times after refining, and the waste water after refining was an unfriendly method because of its high COD, BOD and salt contents, but in the present invention, it is efficient even at about 60 ° C. by using an enzyme cellulase. It can also be eco-friendly.

The polyoxyethylene alkyleter-based refining penetrant is better in oil (OIL) emulsification than alkyl ethoxylate (Alkyl Ethoxilate), which is mainly used as a general refining agent, and has excellent cleaning power of impurities present in cotton fibers. Enhancement of enzyme activity against pectin, a hydrophobic substance on the surface of the fiber, makes the enzyme-refined cotton fiber excellent rewetting. The phosphate-based chelating agent (Securon 540) has a higher chelating ability than the general metal ion sequestering agent and can prevent the activity of the enzyme refining agent from the metal and hardness components of water or fiber.

The injected cellulase is refined using an enzyme containing pectatelyase which decomposes only pectin, a hydrophobic substance that accounts for about 29% of the outer surface of cellulose, thus maintaining cotton's unique form without damaging cotton fibers and making soft cellulose fibers. Maintaining the properties of the increase in durability and the effect of removing the fuzz of cotton fibers can be improved filling water supply.

In the refining step, the ratio of 1: 5 to 1: 8 can reduce the mass loss phenomenon of the fabric than conventional caustic soda refining and maximize the characteristics of the cotton fiber itself.

After the refining step is completed, the treatment bath is used as it is without draining, and the bleaching step is performed. The temperature of the treatment bath is increased to 70-80 ° C., 0.1-0.5 g / l of phosphate stabilizer, and 1.0-3.0 g of Na ₂ CO _3. / l, triacetin 2.0-5.0g / l, hydrogen peroxide 4.0-8.0g / l, and bleach 0.1-0.3g / l, and after treatment for 30-40 minutes, cooled to room temperature, and then heated again to 80-90 After 10-20 minutes at ℃, and then rapidly cooled to 45-55 ℃, catalase 1.0 ~ 3.0g / L is added and 10 to 20 minutes. The added catalase can make the fruit tree after bleaching with water and oxygen to efficiently remove the residual fruit tree, thus preventing disproportionation during the dyeing process and securing dyeing property (K / S value) of the dye. . The bath ratio in the bleaching step is 1: 5 to 1: 8 can improve productivity and reduce water consumption.

After cooling to 35 ~ 45 ℃ and after adding the dye, leveling agent, forget-me-not and the temperature is raised to 55 ~ 65 ℃, add soda ash and 50 to 70 minutes after completing the dyeing step to wash and dry the enzyme of the present invention The dyeing processing method of the used cotton fiber product is completed. At this time, the enzymes remaining in the treatment solution can decompose reactive dyes, which are not fixed to the fiber products, thereby improving the fastness while reducing the number of washing cycles, thereby shortening the process time and securing excellent dyeability.

Therefore, according to the present invention, by adding the enzyme in the refining step and the bleaching step, it replaces the previously used NaOH and dyes in the same bath without draining the post-bleaching treatment solution to efficiently remove residual fruit trees in the treatment solution. It can be removed to prevent disproportionation during the dyeing process, to secure the K / S value, and to improve the fastness while reducing the number of washing times by decomposing reactive dyes unfixed to the textile products at the dyeing stage. It can be ensured excellent dyeability, it is possible to increase the morphological stability, durability and flexibility of the cotton fiber in the refining step. In addition, it is possible to realize environmentally friendly processes such as shortening the process, saving water, and reducing the waste water.

1 is an external photograph of the cotton fiber product of Example 1 processed by the dyeing and processing method of the cotton fiber product using the enzyme of the present invention,
2 is an enlarged photograph of the cotton fiber product of Example 1 processed by the dyeing and processing method of the cotton fiber product using the enzyme of the present invention,
Figure 3 is a SEM micrograph of the cotton fiber product of Example 1 processed by the dyeing and processing method of the cotton fiber product using the enzyme of the present invention,
Figure 4 is an appearance photograph of the cotton fiber product of Comparative Example 1,
5 is an enlarged photograph of the cotton fiber product of Comparative Example 1,
6 is a SEM micrograph of the cotton fiber product of Comparative Example 1.

The following examples are given as non-limiting examples of the dyeing and processing method of the cotton fiber product using the enzyme of the present invention.

Example 1

Into a bath immersed in cotton fiber products (knitted fabric), the scouring agent and chelating agent described in Table 1 below were added thereto, and the temperature was raised to 60 ° C. As shown in Table 2, after adding the stabilizer, Na ₂ CO ₃ , triacetin, hydrogen peroxide and bleach, after cooling for 30 minutes, and then cooled to room temperature, the temperature was raised to 10 minutes at 90 ℃ and then rapidly to 55 ℃ After cooling, catalase is added and the bleaching step is performed for 10 minutes, and the treatment liquid in the bathtub is cooled to 40 ° C without draining, and dyes, leveling agents, and forget-me-not are added as described in Table 3, and the temperature is raised to 60 ° C. After the dyeing step of adding soda ash and treatment for 60 minutes, washed with water and dried to complete the dyeing process.

division Example 1 Comparative Example 1

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Refinery Penetrant
(Foryl SEC conc) 0.5 g / ℓ Refinery Penetrant
(Foryl SEC conc) 0.5 g / ℓ Cellulase
(Diazim NEU) 1.0 g / l NaOH (50%) 2.0 g / l Chelating agents
(Securon 540) 1.0 g / l Chelating agents
(Securon 540) 1.0 g / l Processing temperature  60 ℃ × 30 minutes 95 ℃ × 30 minutes

division Example 1 Comparative Example 1 stabilizator
(Stabiol ZM) 1.0 g / l 1.0 g / l Na ₂ CO ₃ 2.0 g / l 2.0 g / l Hydrogen peroxide (35%) 5.0 g / ℓ 5.0 g / ℓ bleach
(Eco White) 0.2 g / l 0.2 g / l Triacetin 3.0 g / ℓ 3.0 g / ℓ Surfactants - 3.0 g / ℓ Catalase 3.0 g / ℓ - Treatment condition 50 ℃ x15 minutes 95 ℃ x30 minutes

division Example 1 Comparative Example 1 dyes 1.5% (owf) 1.5% (owf) _{Leveling agent
( Osimol RFT )} 1.0 g / l 1.0 g / l sulphate of soda 40 g / ℓ 50 g / ℓ Soda ash 15 g / ℓ 20 g / ℓ Treatment condition 60 ℃ x40min 60 ℃ x50min

Comparative Example 1

As in Example 1, except that NaOH (50%) is used instead of cellulase in the refining step as shown in Table 1, and surfactant is used instead of catalase in the bleaching step as shown in Table 2. The dyeing process was completed.

The physical properties of the textile products after the dyeing of Example 1 and Comparative Example 1 were tested and are shown in Table 4 below.

Evaluation item unit Example 1 Comparative Example 1 Evaluation Method (Test Standard) Absorbency Mm 30 or more 30 or more JISL190M Anti-pilling properties class 3 2-3 ASTM D3512 Contraction ratio % Less than 5 Less than 5 AATCC135 Wash fastness class 3-4 3-4 ISO 105 C06 Friction fastness class 3 3 KS K 0650 Build-up
(black standard) K / S 13.1 13.0 Utilize CCM

After comparing the dyeing finish of Example 1 and Comparative Example 1, the result of comparing the absorbency, anti-pilling property, shrinkage rate, washing fastness, friction fastness, build-up properties of the fiber product is the dyeing finished fiber product of Example 1 is Comparative Example 1 Equivalent to or better anti-pilling properties. In addition, the SEM (scanning electron microscope) also showed that the appearance of the enlarged fiber surface was clearer than the equivalent level.

Claims (3)

In the dyeing and processing method of cotton fiber products using enzymes,
Polyoxyethylene alkyl ether-based scouring agent and phosphate chelating agent were added to a bath in which cotton fiber products were immersed, and the temperature was raised to 50-60 ° C., followed by 1.0-2.0 g / l of cellulase, followed by 30-40 minutes of scouring. step;
The temperature was raised to 70 ~ 80 ℃ phosphate-based stabilizer, _{0.1 ~ 0.5g / ℓ, Na 2} CO 3 1.0 ~ 3.0g / ℓ, triacetin 2.0 ~ 5.0g / ℓ, hydrogen peroxide 4.0 ~ 8.0g / ℓ and bleach 0.1-0.3 After the addition of g / L after treatment for 30 to 40 minutes, and then cooled to room temperature, the temperature is increased again and after treatment for 10 to 20 minutes at 80 ~ 90 ℃, then rapidly cooled to 45 ~ 55 ℃ and catalase 1.0 ~ 3.0 g / L Adding and bleaching treatment for 10 to 20 minutes; And
Cooling at 35 ~ 45 ℃, adding dye, leveling agent, forget-me-not, warming to 55 ~ 65 ℃, adding soda ash, and dyeing process of cotton fiber product using enzyme, characterized in that it consists of dyeing process for 50 ~ 70 minutes. Way. The method of claim 1, wherein the bath ratio in the refining step is 1: 5 ~ 1: 8 dyeing processing method of cotton fiber products using enzymes. The method of claim 1, wherein the bath ratio in the bleaching step is 1: 5 to 1: 8 dyeing process of cotton fiber products using the enzyme, characterized in that.

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