JPH09316786A - Production of dyed textile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a dyed textile having a good dye-affinity and many tones of color by treating a textile with a dye liquor containing catechins or a material having its attribute and a mordant liquid in different baths or in the same bath. SOLUTION: A textile made of cotton, linen, silk, etc., are dyed by dipping into a dye liquor containing catechins such as a catechin chemical originating from tea or a material having its attribute and thereafter mordanting the dyed textile with a mordant liquid such as a calcium-based mordant to obtain the objective dyed textile having deep cream color. The textile can also be treated with a bath containing both the above dye liquor and the mordant simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a dyed fiber product which is excellent in quality and advantageous in the manufacturing process.

[0002]

2. Description of the Related Art In today's nature-oriented environment, plant dyeing is being re-evaluated. There are an extremely large number of plants that can be used for plant dyeing, and one of them is tea dyeing. In particular, Shizuoka Prefecture is Japan's number one tea producing area, and because the tea fields of Noyama are always visible,
The green color is an attractive color for dyeing.

Among the plant dyeing, an application relating to a tea dyeing dyed with a tea extract is made as follows.

Japanese Patent Laid-Open No. 49-48981 discloses a dyeing method in which a solution containing tea is heated, a mordant is mixed, and a cloth or yarn subjected to a subdying process is dipped in the solution. It is shown.

JP-A-54-34081 discloses that a specific brown or black dye is mixed with a brewing solution of a plant containing a large amount of tea or other astringent (tannin), in which palm or sucrose is added. A plant fiber dyeing method in which a fiber raw material or a rope or the like made of these is put and boiled to dye in brown or black is shown.

In Japanese Patent Laid-Open No. 58-115178, a tea brewing solution is left for 2 to 3 days, a supernatant is taken, the solution is drawn on a dough, and a mordant is drawn on it. A method of dyeing a textile material with tea is shown.

JP-A-3-19985 discloses that an extract obtained by immersing Goishi tea in water is applied to a fabric to be dyed with a brush or the like,
After drying, it is immersed in an aqueous solution of acetic acid and kept at a temperature within 100 ° C for about 30 minutes. After drying, it is immersed in an aqueous solution of a metal salt and kept at a temperature of 50 to 60 ° C for about 30 minutes, and washed with water. A dyeing method with Goishi tea is shown, which comprises steaming at a temperature within 100 ° C. for about 25 minutes in a drying room.

Japanese Patent Application Laid-Open No. 6-173
No. 176 discloses various processes of treating a textile product with tannic acid → [fixing treatment with tartar stone] → [mordanting reaction with mordant solution containing mordant] → dyeing reaction with dye solution containing tea extract. A method of making a tea dyed textile product that is to be dyed over time is shown. Items in [] are optional steps. Further, in the above process, a method of simultaneously carrying out a mordant reaction and a dyeing reaction with a mordant-staining solution is also shown.

[0009]

Among the above-mentioned conventional techniques, the one in which dyeing is performed by using a tea extract may give the same color because the color tone of the dyed product may be different even by a slight difference in the raw material and the extraction operation. There are problems that it is difficult, that dullness is likely to occur due to contaminants, and that physiological activity such as antibacterial and antiviral properties can hardly be expected, although staining is possible.

When tartar stone is used for fixing among the above-mentioned conventional techniques, tartar stone is a medicinal deleterious substance, and the influence on the skin due to the mucous membrane stimulating effect of tartar stone cannot be ignored. However, there is a problem that the use of tartar makes the process longer and the cost higher.

In the above conventional technique, the process is generally quite complicated, which is disadvantageous in terms of productivity and manufacturing cost.

Under such a background, the present invention has a unique color tone which is advantageous in the manufacturing process and has a natural feeling without using tartar for fixation, and various color tones are obtained. It is possible to provide a method for producing a dyed fiber product which is preferable for health because it has good dyeing property, high dyeing fastness, and has physiological activities such as antibacterial, antiviral and antiallergic properties. The purpose is.

[0013]

One of the methods for producing a dyed textile product of the present invention is to contact a textile product with a dyeing liquor containing catechins or attributes thereof, and then to contact with a mordanting liquor containing a mordant. It is characterized by that.

Another method of producing a dyed fiber product of the present invention is to bring the fiber product into contact with a dyeing / combining mordant containing both catechins or their attribute substances and a mordant, whereby a dyeing reaction and It is characterized in that the mordant reaction is carried out simultaneously.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

Textile products in the present invention include fibrils, threads, piles, cotton-like materials, woven fabrics, knitted fabrics, non-woven fabrics and flocked fabrics. In addition, paper products, wood products, etc. are also included in the textile products referred to in the present invention.

The materials of these textile products are cotton, linen,
Natural fibers such as silk and wool, chemical fibers such as polyamide fibers, or blended products of these natural fibers and chemical fibers.
Mixed woven and knitted goods are optional. Of these, cotton, linen and silk are of particular importance.

In the first method of the present invention, desizing, scouring, bleaching, etc. are carried out if necessary, and then the textile product is first contacted with a dyeing liquid containing catechins or an attribute thereof.

As the catechins or their attributes, catechins or oligomers are used (including teflavin). Particularly important as catechins or their attribute substances used in the present invention are tea-derived catechin preparations in which the concentration of catechins or their attribute substances is increased. The main components of tea catechin are epigallocatechin, epigallocatechin gallate, epicatechin,
Although it is epicatechin gallate, etc., it is not necessary to isolate it into individual components. Therefore, a formulation containing tea catechin in a concentrated manner (especially 20% or more, preferably 25
% Or more) can be suitably used as they are. Commercially available tea-derived catechin preparations are 30% and 50%
Products, 60% products, 70% products, 80% products, 90% products, etc.

Since catechins or their attribute bodies are contained in various plants other than tea such as Asenyaku, catechins derived from these plants or their attribute bodies can also be used. Note that catechins or their attribute substances are also contained in extracts of tea (green tea, black tea, oolong tea, etc.), but a simple extract has a considerably small amount of catechins or its attribute substances, and many impurities. , Unable to achieve the intended purpose. Therefore, it is necessary to use the one in which the concentration of the active ingredient is increased as described above, or to use it in combination with the catechins or the attribute thereof as described below.

The above dyeing liquor may contain at least one of an extract such as tea and tannic acid together with catechins or an attribute thereof. Here, as the tea extract, powdered tea of the first tea, the second tea, and the third tea, deep-mush,
An extract of tea such as covert, an extract of black tea or oolong tea can be used. As the tannic acid, a commercially available purified tannic acid can be used, or an extract of a natural plant containing high tannic acid containing a large amount of tannic acid such as quintile and gallic or a semi-purified product thereof can be used as it is.

Regarding the conditions for contacting the textile product with the dyeing liquor containing catechins or its attributes, the bath ratio is about 7 to 100 times the weight of the textile product, and the bath temperature is 50 ° C to
The boiling temperature and the treatment time are about 10 minutes to 3 hours, and the concentration of catechins or their attributes is about 0.2% by weight or more, usually about 1 to 20% by weight, based on the weight of the fiber product, but not always. It is not limited to these ranges.

After the textile product is brought into contact with the dyeing solution containing catechins or its attribute, the textile product is brought into contact with the mordant solution containing a mordant without fixing with tartarite (antimony potassium tartrate). . Dyeing products with various color tones can be obtained by selecting the type of mordant. It should be noted that the use of tartar should be avoided because there are problems such as the effect on the skin due to the mucous membrane stimulating effect being not negligible and the dyeing cost being high (until the use of a nominal amount (Although it is not excluded), when using catechins or their attributes as in the present invention, it is not necessary to carry out the fixing step using tartarite.

Here, as the mordant, calcium mordant (calcium acetate, calcium hydroxide, etc.), titanium mordant (titanium salt of organic acid), aluminum mordant (aluminum acetate, aluminum sulfate, aluminum chloride, alum, burnt alum, potassium alum). , Aluminum salts such as commercially available aluminum liquids), iron mordants (iron salts such as iron acetate acetate, ferrous sulfate, iron nitrate, ferrous acetate, iron acetate wood), silver mordants (silver such as silver acetate, silver nitrate) Salt), copper mordant (copper salt), tin mordant (tin salt), zinc mordant (zinc salt), chromium mordant (chrome salt), cobalt mordant (cobalt salt), and the like. Camellia ash, Sawaftagi ash, Hisakaki ash,
Plant ash (wood ash or straw ash) such as oak ash, Akaza ash, and Waseda straw ash can also be used. These plant ashes contain, in addition to aluminum ions, other metal ions and alkaline substances useful for dyeing.

The liquor ratio at the time of mordant is 7 to the weight of the textile product.
It is often about 100 times (particularly about 8 to 60 times), the bath temperature is from room temperature to the boiling temperature, and the treatment time is about 10 minutes to 1 hour in many cases, but not limited to this range.

After completion of the above steps, after-treatment such as soaping and washing with water is appropriately performed, and then natural drying or hot air drying is performed.

In the second method of the present invention, the dyeing reaction and the mordant reaction are carried out simultaneously by bringing the textile product into contact with the mordant solution which also contains a catechin or its attribute and a mordant. The mordant that also serves as a dye may contain at least one of an extract such as tea and tannic acid together with catechins or an attribute thereof and a mordant.

The desired dyed fiber product is obtained by the first or second method. The dyed textile product of the present invention is used in contact with skin, for example, underwear, pantyhose, bra, shirts, nightwear, sheets,
Paper diapers, gloves, hats, sports supporters, swimwear, bandages, clothing for the sick, masks, interior or surface materials for footwear,
Especially useful for watch bands, socks, etc. Further, since it has fashionability, there is no problem even if it is used in a case where it does not come into direct contact with the skin. In addition, it can also be used as a filter for air purifiers and air conditioners.

<Operation> In the present invention, although no tartar for fixing is used, the dyeing property is good, various color tones can be obtained, and deep dyeing is performed. It is also possible and has high dyeing fastness. In addition, the obtained dyed fiber product has physiological activities such as antibacterial / antiviral / antiallergic properties, which is convenient for health. Further, the method of the present invention is extremely advantageous in terms of manufacturing cost because the manufacturing process is short.

[0030]

EXAMPLES The present invention will be further described with reference to examples.

Example 1 100 g of cotton fabric was put into 1200 ml of water (bath ratio 1:12) and heated to 90 ° C. with stirring, and at this temperature, about 1
After stirring for 0 minutes, washing and dehydration were performed.

As an example of catechins or their attributes, catechins containing about 10% by weight of epigallocatechin, about 15% by weight of epigallocatechin gallate, about 2% by weight of epicatechin, and about 3% by weight of epicatechin gallate. Three
A 0 wt% commercial tea-derived catechin formulation was prepared.

10 g of the above tea catechin preparation (10
% Owf) and a little more water to bring the total to 120
Prepare a treatment liquid with 0 ml (bath ratio 1:12), add cotton cloth to this treatment liquid, and warm to about 80 ° C, then
After stirring for a minute and then turning off the temperature, the stirring was continued for 60 minutes, followed by washing with water and dehydration.

Sodium stannate was added to water to form a 3% aqueous solution, and then 100 g of the cotton cloth after the above treatment was added to the aqueous sodium stannate solution (bath ratio 1:12) and allowed to spread for about 10 minutes. The temperature rises to about 90 ° C, and at this temperature about 3
After stirring for 0 minutes, washing, dehydration and drying were performed.

As a result, a deep, cream-colored tea catechin dyed cotton fabric was obtained. The obtained dyed cloth had good dyeing properties and high dyeing fastness.

Example 2 A cotton cloth was put into water, heated to 90 ° C. with stirring, stirred at this temperature for about 10 minutes, washed with water and dehydrated.

5 g of powdered tea was put in 100 ml of water and immersed for about 5 minutes, then stirred at a temperature of 20 to 25 ° C. for 5 to 15 minutes, and allowed to stand overnight. The next day, filtration is performed, and the tea leaf extract 70-
90 ml was obtained.

5 g (5% owf) of this tea leaf extract and 5 g (5% owf) of the above-mentioned tea catechin preparation were added to water, and a little more water was added to make a total of 1200 ml to prepare a treatment solution. A cotton cloth is added to the liquid, and the following Example 1 is used.
After performing the treatment in the same manner as described above, washing and dehydration were performed.

Sodium stannate was added to water to form a 3% aqueous solution, and then 100 g of the above-treated cotton cloth was added to the aqueous sodium stannate solution (bath ratio 1:12), and the mixture was soaked for about 10 minutes. The temperature rises to about 85 ° C, and at this temperature about 3
After stirring for 0 minutes, washing, dehydration and drying were performed.

As a result, a deep cream-colored tea catechin-dyed cotton fabric was obtained. The obtained dyed cloth had good dyeing properties and high dyeing fastness.

Example 3 Cotton fabric g was put into water, heated to 85 ° C. with stirring, stirred at this temperature for about 10 minutes, washed with water and dehydrated.

5 g (5% owf) of the special tannic acid and 5 g (5% owf) of the above-mentioned tea catechin preparation were added to water, and some water was further added to the water to obtain 1200 ml (bath ratio 1:
In 12), a treatment liquid was prepared, and a cotton cloth was added to the treatment liquid. The treatment was carried out in the same manner as in Example 1 below, followed by washing with water and dehydration.

After sodium stannate was added to water to form a 3% aqueous solution, 100 g of the cotton cloth after the above treatment was added to this aqueous solution of sodium stannate (bath ratio 1:12) and allowed to spread for about 10 minutes. The temperature rises to about 85 ° C, and at this temperature about 3
After stirring for 0 minutes, washing, dehydration and drying were performed.

As a result, a deep, cream-colored tea catechin-dyed cotton fabric was obtained. The obtained dyed cloth had good dyeing properties and high dyeing fastness.

Example 4 A cotton cloth was put into water, heated to 90 ° C. with stirring, stirred at this temperature for about 10 minutes, washed with water and dehydrated.

10 g of the above tea catechin preparation (10
% Owf) and 3 g of sodium stannate, and a little more water to add 1200 ml (bath ratio 1:12).
To prepare a treatment liquid, add cotton cloth to the treatment liquid, and after treating in the same manner as in Example 1, wash with water,
Dehydration was performed.

As a result, a deep, cream-colored tea catechin-dyed cotton fabric was obtained. The obtained dyed cloth had good dyeing properties and high dyeing fastness.

<Antibacterial activity 1> With respect to the dyed cloths obtained in Examples 1 to 4, the growth inhibition rate against fungi (athlete fungi) was determined.
The results are shown in Table 1. Among the dyeing conditions in Table 1, Cat is tea catechin, Tea is tea leaf extract, and Tan is special tannic acid.

[0049]

[Table 1] Growth mycelium diameter (mm) Dyeing condition on day 17 (% owf) Day 7 Day 17 inhibition rate (%) Cat Tea Tan blank 32 75 ---- unprocessed product 30 68 9.3 --- Example 1 26 51 32.0 10--Example 2 25 40 46.7 5 5-Example 3 26 54 28.0 5-5 Example 4 27 38 49.3 10--

<Antibacterial activity 2> Staphylococc of Staphylococcus aureus on the dyed cloths obtained in Examples 1 to 4 by the bacterial count method.
The antibacterial activity against us aureus IFO 12732 was investigated. That is, a broth suspension of the test bacteria was added to a sterilized sample cloth, and the viable cell count after culturing at 37 ° C. for 18 hours in a closed container was measured to determine the increase / decrease value with respect to the inoculum count. The results are shown below and in Table 2. A standard cotton cloth was used as the unprocessed cloth.・ Inoculum count (A) is 2.2 × 10 ⁵ , log A is 5.3 ・ Non-processed bacterial count (B) is 6.5 × 10 ⁸ , log B is 8.8 ・ log B-log A = 3.5> 2 (test is valid ) ・ Increase / decrease value = log C-log A ・ Increase / decrease value difference = (log B-log A)-(log C-log A)

[0051]

[Table 2] Number of bacteria log C Increase / decrease value Difference in increase / decrease value Example 1 (10 times of washing) 5.3 0 3.5 Example 2 (10 times of washing) 3.3 -2.0 5.5 Example 3 (10 times of washing) 4.5 -0.8 4.3 Example 4 ( 10 times of washing) Times) 3.5 -2.0 5.5

<Antibacterial activity 3> Klebsiella pneumon was applied to the dyed cloths obtained in Examples 1 to 4 by the shake flask method.
The antibacterial activity against iae ATCC 4352 was examined. Table 3 shows the results
Shown in・ Initial bacterial count is 1.3 × 10 ⁴ cells / ml. -Sterilization rate (%) = 100 x (initial bacterial count-bacterial count after shaking) / initial bacterial count.

[0053]

[Table 3] Bacterial count after shaking and sterilization rate Viable cell count (cells / ml) Sterilization rate (%) Untreated cloth 1.2 × 10 ⁴ 7.7 Blank test (liquid only) 1.4 × 10 ⁴ -7.2 Example 1 3.0 × 10 ² 97.7 Example 2 1.3 × 10 ³ 90.0 Example 3 7.0 × 10 ² 94.6 Example 4 9.0 × 10 ² 93.1 Initial number of bacteria was 1.3 × 10 ⁴ cells / ml.

<Wear test> T according to Examples 1 to 4 above
A shirt was dyed, and a wearing test was performed on the comfort such as presence or absence of sweatiness and itchiness (people with atopic dermatitis).
The T-shirts of ~ 4 were judged to be clearly more comfortable than the unprocessed product.

[0055]

As described in the section of the operation, in the present invention, the dyeing property is good and various color tones can be obtained, although tartar for fixing is not used. It is also possible to make deep dyeing, and the dyeing fastness is high.
In addition, the obtained dyed textile products are antibacterial / antiviral
Since it has physiological activity such as antiallergic property, it is convenient for health. Further, the method of the present invention is extremely advantageous in terms of manufacturing cost because the manufacturing process is short.

Claims (4)

[Claims] 1. A method for producing a dyed fiber product, which comprises bringing a textile product into contact with a dyeing liquid containing catechins or an attribute thereof, and then bringing it into contact with a mordant liquid containing a mordant. 2. A dyed fiber product characterized by carrying out a dyeing reaction and a mordant reaction at the same time by contacting the fiber product with a mordant liquid which also contains a catechin or its attribute and a mordant. Manufacturing method. 3. A dye liquor or a mordanting liquid that also serves as a dye liquor, which comprises at least one of tea extract and tannic acid together with catechins or their attribute substances and a mordant. 2. The production method described in 2. 4. The method according to any one of claims 1 to 3, wherein the catechins or their attribute bodies have a total amount of catechins or their attribute bodies of 20% or more.