JPS5959975A - Production of acrylic synthetic fiber good in anti-staining property - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to acrylic synthesis with good antifouling properties 7]4 and a method for producing fibers. More specifically, the present invention relates to a novel durable antifouling treatment of acrylic synthetic flI1 fibers by alkali treatment.

The stain-resistant acrylic synthetic fiber produced by the method of the present invention has excellent stain-proof durability and can be used under household washing conditions (Matsushita Ichiki (He) Black ■, Seiki NA-150). , put in New Beame 2 f/t, wash at 40℃ for 5 minutes, cook on fire for 10 minutes at room temperature, and then dehydrate and dry. Eagle face 5
Even if it is repeated 0 times, the stain resistance does not change.

Conventional stain-proofing treatments for acrylic synthetic fibers have been reported using water and oil repellents such as fluorine-based and silicone-based agents to prevent stains from adhering to the fibers, but there have been no reports of processing methods that make it easier for the adhering dirt to fall off. .

The present invention particularly improves the ability of the latter to remove adhering stains, but the former's effect of preventing stain U adhesion is also recognized, although it is not a water- and oil-repellent treatment agent.

According to the present invention, the effect of removing stains is very large, and even marker ink stains, which are said to be the most difficult to remove from children, are easily removed.

The method of the present invention, which easily removes dirt, has been reported to treat polyamide thread synthetic fibers, polyester, n-synthetic fibers, etc. with a hydrophilic finishing agent, and depending on the processing conditions, the durability is also accepted. However, even when acrylic synthetic fibers are treated with these commercially available hydrophilic finishing agents, temporary effects are observed, but no durable effects can be obtained.

The method of the present invention differs from conventional methods in that it relates to a method for producing acrylic synthetic fibers that are durable and have excellent stain removal properties.

That is, the object of the present invention is that an acrylic synthetic fiber containing 403% or more of acrylonitrile is treated with an alkaline aqueous solution and hydrolyzed.
A method for producing an acrylic synthetic fiber having good stain resistance.

The present invention will be explained in detail below.

The reason why acrylic synthetic fibers are given stain-shedding properties by hydrolysis with alkali is thought to be because hydrolysis converts nitrile groups into carboxyl groups, increasing the water affinity of the fabric surface. .

Acrylic fibers produced using an aqueous alkaline solution (hydrolysis of fibers can cause stains in the following three ways, but in all cases, the stain resistance is poor). It will be done.

The first method is to treat with a low concentration of alkali at a relatively low temperature. The acrylic synthetic fiber obtained by this method is produced by Sato, i! tM less than 5 inches. This product exhibits durability and excellent stain resistance, and there is no difference in texture or strength, making it the most suitable treatment for general clothing and interior bedding.

Second kl: A method of treating with low to medium concentration alkali at a relatively high temperature, the weight loss is 596 or more, and the weight loss and texture change of the acrylic synthetic 0V fiber is significant.

3C" 2. In the method of treating at relatively high temperature with high concentration alkali or low to medium concentration alkali and 14iW (high salt), 11 loss is relatively small, but it does not occur at all depending on the conditions. This results in swollen fibers, which are hard and strong in texture (with a decrease in dyeability).

The above three will be explained below using the case of sodium hydroxide as an example.

In the first method, the material is treated in an aqueous solution of 0.1 to 10% sodium hydroxide at 75 DEG C. to 120 DEG C. for 10 to 60 minutes, followed by addition of an acid, neutralization, washing with water, and dehydration drying.

Depending on the needs, it is also possible to remove the gradual coloring that occurs with an acidic aqueous solution having a pH of 1 to 4 after neutralization and washing.

In the case of padding treatment, apply padding to a 0.1 to 10-weight I/L sodium hydroxide aqueous solution, reduce the adhesion amount to 20 to 100%, perform dry heat or steam treatment, and then apply an IV bath. In the solution, perform 11 washing with water, dehydration, and drying. Further, if necessary, it is also possible to perform a coloring removal treatment similar to the soaking treatment. .

The products treated by this method were able to provide excellent stain removal properties without affecting the properties such as hand strength and elongation, as well as dyeability and color fastness.

The treatment conditions used in the present invention are that the balance between the alkaline degree and the treatment temperature and time is important for all three methods. It is necessary to go down and shorten ``'+11!1'' to create a currency IJ.

=220 In the method, the product is treated at 85°C to 120°C for 1 to 60 minutes in an aqueous solution of VtV containing 1 to 20 parts of sodium chloride, neutralized by adding 1 part of water, washed with water, degreased, and dried with water. I do. Also, add neutralized water if necessary6. After pHi~4 11' 71-
Produced by processing 1 liquid at 80-100℃ for 2-60 minutes/
It is also a 6-cho noh to remove 19 mi of kobo-iro.

In addition, in the case of padding treatment, padding treatment is performed with 2 to 30 ml of sodium hydroxide aqueous solution.Tj: 2
After narrowing down to 0-100% and performing dry heat or steam treatment 1
Neutralize and wash with water using a diluting solution, then dehydrate and dry1.Also, if necessary, color removal treatment can be performed in the same way as dipping treatment.
It is J-Noh.

Items treated with this method had excellent stain removal properties, but had a sagging loss of 5 to 100%, and the texture changed significantly.

In the third method, sodium hydrate is 25% or more or 5 to 5%
20% hydroxide) IJumVC5~50%Q) 85℃~120℃ in an aqueous solution with sodium salt of a strong acid
After processing for 1 to 60 minutes at a temperature of 1 to 60 minutes, a lubricant was added and the mixture was washed with water and then dehydrated and dried. Also, if necessary, after neutralizing and washing with water, adjust the pH to 1~
4 (7-+ (, 1 case 80-100℃ in water bath, 2-
It is also possible to perform a 60 minute treatment to remove the resulting coloration. In addition, in the case of padding treatment, padding with 10 to 50 parts of water, 1 part sodium aqueous solution, and 4 parts. After application, neutralize with a tonic solution and dehydrate and dry. Further, if necessary, it is also possible to perform a coloring removal treatment similar to the immersion 1 treatment.

Items treated with this method have very good stain removal properties, but have a hard texture and reduced dyeability and strength, so they are not suitable for general clothing or interior bedding. 1ii1' and bright are merely examples, and do not define the present invention in any way.

Examples of the alkali used in the present invention include sodium hydroxide, potassium hydrate, lithium hydroxide, sodium carbonate, potassium carbonate, and the like. The substances listed here are just one of them! In addition, all alkaline compounds that cause a hydrolysis reaction on acrylic synthetic fibers can be used without invention, and a mixture of these and other alkaline compounds can also be used. ] 7'i: It is preferable to use industrial water as a medium, but as a solvent in place of water, 111 (su, methanol , ethanol, furopanol, methoxyethanol, secondary ethanol, dimethylform, dimethyl sulfoxide, etc., and mixtures with water (it is important to note that the use of methoxyethanol and water is very important). Depending on the wall, it is also possible to coexist with other materials, thread materials or ;s material.

Thus, by treating the acrylic synthetic fiber assembly with the method of the present invention, it is possible to maintain excellent dirt removal properties that are durable.

The present invention has a therapeutic effect on all acrylic synthetic fibers.In order to impart stain removal properties without changing various physical properties such as texture, strength and elongation, dyeability, color fastness, etc., using the method of the present invention, , Kochi,・
1 must be within 5, and conditions that increase water swelling properties must not be imposed.

In some cases, even a composite processed without an alkali exhibits a 1-level shell reduction rate. Especially in the case of spun yarn 1. J Since there are differences in the weight loss and i7i rate of those processed without alkali depending on the quality, in the main text hydrolysis with a weight loss of less than 5% means, for example, using alkali s and the same process as the method of the present invention. This means that the weight loss of the shelf stand that was passed through the process was 1 inch, but the weight loss of the shelf stand that was processed by the method of the present invention was within 6 inches.

Hereinafter, the method of the present invention will be specifically examined according to the implementation direction, but the present invention will not be explained in any way by these embodiments.
J is not limited. Note that all the pieces in the examples are 41 pieces in weight.

In addition, the following method was used for the antifouling performance in the examples.

[l] Sample (10 cn + × 1
0α) 3 sheets and staining agent (*1) IP and detergent (chemical soap 6W New Heath 21/water bath liquid) 40 at 200 squares
℃ x 1 hour with stains A, treat and remove stains B with #■47. Determine self using gray scale for pollution.

*1: Dry cleaning stains, artificial oil stains, stearin rN
s%, oleic acid s%, tr'; l-type paraffin (mp' s~60°C) 16 parts, cholesterol 2 parts, tristearin, trimelein, stearyl alcohol 8%, oleyl alcohol 8%, salt 29 parts, carbs 57 Bufutsuku 5 [2] Staining detergent for 192 - Ij no stains 1, agent ≧ declaration, l only]
” In the same way as contamination determination, perform stain + 1 garment processing and judge the degree of stain on the cloth using the contamination gray scale.

[3] Using a rounder-o-meter, use a rounder-o-meter to test the sample that has been determined for stain removal and contamination.
Washed at 00 CC for 15 minutes at 40°C, and judged how dirty the cloth was using the contamination gray scale.

Example acrylic thread M (trade name: Cashmilon, 711 chemically formed θ gradient 5
'・'7) A plain weave fabric made from spun 1 thread and 80 count double thread was scoured in the usual manner, and the sodium hydroxide was mixed with the water shown in Table 1. After treatment with sodium oxide aqueous solution (bath ratio 1:40) and washing with water, remove the negative changes of acrylic and J fibers by treatment with sulfuric acid I W/L, 100°C for 30 minutes, and then perform the usual i treatment. +r color was applied and dehydrated and dried.

Table 2 shows that the above dyed product had a kite rating of 7, and an A of 1 vermilion when measuring physical properties and antifouling properties.

The following is a blank coat l *z: The texture is the same as untreated by tactile judgment (multi,
A slightly hard one was rated 0, and a hard one was rated ×.

*3: The m-reduction rate was calculated from the following formula. , A: Weight after Semen A'JR B: Dyeing Iyu ii 1i1 (The numbers below the decimal point include v1 day and 5 people/ζ) The alkali-treated one is the youngest daughter J1. V<-Rubet recontamination, stain removal 1'1. has improved '4. However, although the contamination property improves slightly, there is almost no difference. b! lI
〢When treated with alkali, the JB2.16 property of stains is large]
Although it improves, the ease with which it gets dirty is almost the same even though it is moved upstream.

If the processing condition r-1 is too weak, ZI fruit will not appear, but N[L
If it is too strong and the weight loss exceeds 5cm, as in 13, the texture becomes hard and the fiber becomes 1μ. The fastness was also the same as that of the untreated product. However, as the texture became harder, both strength and color fastness tended to decrease.

N115. When the alkali concentration was high as in Nα16, water swelling ('I) was exhibited.

Example 2 A plain woven fabric made from acrylic square face, fiber (trade name: Cashmilon, manufactured by Asahi Kasei) spun yarn, and 80-count double yarn was refined by the method described in the next step, and then soaked in a sodium hydroxide aqueous solution for 50 minutes. After soaking for a second, heat treatment with dry heat or steam heat is applied to kt70, and after washing with water fIi1 enemy 19/
The yellowing of the acrylic fibers was removed by treatment at 100° C. for 30 minutes, followed by normal dyeing and dehydration and drying.

The above-mentioned dyed material was evaluated as il+1 in terms of texture, linkability, and stain resistance t1-.

Treatment: a Field crops are listed in Table 3. However, the time between processing stations is 30 minutes, and the dry heat source is a heat setter, steam heat, and ↓ autoclave. The result of the above 612 is 4
Shown below.

In the padding method, as with the dipping method, the ability to remove dirt is greatly improved by alkaline treatment, but the ease with which dirt adheres remains the same. If the amount is reduced by more than 5%, the texture becomes poor, and the elongation and color fastness are the same as in Example 1. It's a trend //
20 Example 3 Kyou/A! IPI i and human power (11 cases 2 good red i fruit 1) 1 Laundry garden laundry service for ranomatamono (Matsushita City 1)
Using a washing machine NA-150 (made by 4), add 22/l of New Beads, heat at 40°C for 5 minutes at 114°C (114cm), then boil at 40°C for 10 minutes at -6 temperature. J'ki wo tsutsu / (
, one cycle of dehydration and drying is considered as one washing cycle)
We investigated the H1+IL durability of Kokoro Hisayuki's non-fouling 1ri1.

Put the test sample in 5, and the result is shown in 6. Table 5 Table 6 W in the table indicates the number of washes.

After drawing a line with magic ink and drying it in a hot air dryer (60℃) for 60 minutes, wet it with water, sprinkle New Beads powder directly on the magic marker area, rub it 100 times with a brush, then wash it with water, dehydrate it, and dry it. The remaining colors were compared using a contamination gray scale. The weather resistance was also investigated/・0 Test sample O・1 was used as coating 7, and the results are shown in Table 8.

Clothes 8 Wt in the sac indicates one washing of seedlings.

Example 5 Example I
The durability of the antifouling property was determined by performing tri-cleaning on the sample. Dry Clean 1'' - using a Rounder Oohmeter, dry clean 1 ooa', as described above.

Add a sample of O.L to GenbuClean p2f solution at a bath ratio of 1:50, wash for 30 minutes at room temperature, then wash it in fresh PerClean solution with L. It was a cycle.

The test sample is shown in Cloth 9, and its 1 fruit is shown in Table 10.

Clothes 9 Clothes lO W in the table indicates the number of washes.

Claims (1)

[Claims] A method for producing acrylic synthetic fibers with good stain resistance, characterized by treating acrylic synthetic fibers containing 40% or more of acrylonitrile with an alkaline aqueous solution and hydrolyzing them.