JPS6228484A - Fastness enhancing method - 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] [Field of Industrial Application] The present invention relates to a processing method for improving the fastness of synthetic fiber materials dyed with disperse dyes, and a processing method that can impart particularly remarkable migration and sublimation prevention properties. Regarding.

[Conventional technology]

Fiber materials dyed with disperse dyes, especially synthetic fiber materials such as polyester, have excellent mechanical performance, chemical resistance, and easy care properties, but they do not come in contact with or are laminated with acrylic, rubber, urethane, PVC, etc. Due to the color shift over time, demand has not increased much, and as a result, we have no choice but to use nylon and cotton, even though they have inferior performance, or polyester materials that can be dyed with cationic dyes due to their high cost.

[Problem that the invention seeks to solve]

As a result of various studies in order to solve this problem, the inventors of the present invention discovered in Japanese Patent Laid-Open No. 82469/1982 that a thin fabric can be made by applying melamine resin to synthetic fibers and then condensing them using steaming treatment combined with microwaves. Although we have disclosed a processing technology that can prevent color migration on textiles, it has not yet been possible to completely prevent color migration on thick fabrics.

Therefore, the present inventors conducted further intensive studies, and found that after the above-mentioned melamine treatment, further treatment in low-temperature plasma could be applied to not only thin woven and knitted fabrics, but also thick fabrics. They also found a way to dramatically improve the color fastness of the material, including its ability to prevent color transfer.

[Means for solving problems]

According to the present invention, there is provided a processing method for improving the fastness of a synthetic fiber material dyed with a disperse dye, which method comprises impregnating the fiber material with melamine or a melamine derivative and then subjecting it to a steam treatment. , and then subjecting the fiber material to a low-temperature plasma treatment under vacuum.

By the melamine treatment according to the present invention, a film having a thickness of O, O1 micron or more is formed on the surface layer of the synthetic fiber. However, this coating has poor compatibility with dyes, and the dye on the surface layer of the synthetic fiber oozes out onto the light surface of the coating, but the low-temperature plasma treatment of the present invention greatly reduces this oozing of dye. It is effectively prevented. Conventional melamine treatment has a treatment effect on thin fabrics such as tucks, dechines, and pallets, but it has not been able to completely prevent the problem on thick textured yarn fabrics. However, the melamine-treated material is preferably 0.01 Torr to 6 T
When placed in a low-temperature plasma, excited molecules, ions, electrons, or high-energy particles such as vacuum ultraviolet light present in the plasma effectively remove dye molecules on the surface layer of melamine-treated textile materials. At the same time, hydrogen abstraction reactions caused by high-energy particles are likely to occur, promoting crosslinking and densification of the melamine film at the same time, resulting in a dramatic improvement in the robustness of thick materials. It will be done.

Preferred melamine or derivatives thereof useful in the present invention are compounds represented by the following general formula.

In the above formula, R4 to R6 are each independently -H, -OH.

-〇CnH2n+4. -cH20CnH2n+1. -C
H20H2-CH2CH20H, -CH2CH2CH2
0H, -CONH2゜Melamine or its derivatives are present in an aqueous solution or aqueous dispersion at a concentration of 0.01% by weight or more, especially 0.
．． Preferably, it is used in a concentration of 0.05 to 10% by weight.

The amount of resin attached to the synthetic fiber is preferably 0.1% by weight or more based on the weight of the fiber, and a range of 1 to 5% by weight is particularly preferable since there is almost no discoloration.

These reactions of melamine or its derivatives are preferably carried out in the presence of a catalyst, such as aliphatic carboxylic acids such as formic acid and acetic acid, saturated dicarboxylic acids such as acrylic acid, and oxycarboxylic acids such as malic acid and tartaric acid. acid,
Examples include 7-minocargonic acids such as glutamic acid, unsaturated dicarboxylic acids such as maleic acid, aromatic dicarboxylic acids such as phthalic acid, and organic salts thereof such as ammonium, sodium, and potassium. In addition to organic salts, salts of inorganic acids such as sulfuric acid, persulfuric acid, hydrochloric acid, phosphoric acid, and nitric acid, such as ammonium, sodium, magnesium, and aluminum, and their double salts can be mentioned. These catalysts are 0
．． It is preferred to use a bath concentration in the range of 0.01-10% by weight.

After impregnation with such an aqueous solution or dispersion, the fiber material is subjected to a steaming treatment. This steaming treatment according to the present invention is preferably carried out as a steaming treatment by microwave heating, for example, in the presence of moisture, at a power of 10OW to 20kW.
, preferably 10 seconds to 60 seconds at a power of 2 to 10 kW
Microwave for minutes, preferably 10-30 minutes! This can be done by irradiation. Next, this treated cloth is subjected to reduction cleaning and drying according to a conventional method.

After that, low-temperature plasma treatment is performed. The low-temperature plasma processing equipment for generating a high-energy active stage is not particularly limited, and may be of an external electrode type in addition to an internal electrode type, or may be of a capacitive coupling type such as a coil type, or an inductive coupling type. There may be. There is also no particular restriction on the shape of the electrode. The degree of vacuum is as high as 0.01 Torr (5T
orr or less, preferably 0. ITorr or more '1 Torr
r or less is desirable.

Gases for generating low-temperature plasma include oxygen,
Examples include air, nitrogen, helium, neon, argon, etc., but are not particularly limited.

The fiber materials targeted by the present invention are those that can be dyed with disperse dyes or dyes that are easily color-migrated, and are mainly polyester-based, polyamide-based, acetate-based, blended products thereof, or natural fibers thereof. 10 natural fibers such as wool, silk, cotton, linen, etc.
It is also possible to apply to 0% products. In addition, its form includes woven fabrics, knitted fabrics, non-woven fabrics, and the like.

The functionality of the fiber material obtained by the method of the present invention does not deteriorate due to home washing, dry cleaning, etc., and the effect is semi-permanent. In addition, there is almost no hardening or whitening of the texture of the processed cloth, which is seen in conventional resin processing, and the grain quality is good.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples.

The treatment was carried out under the following conditions.

(1) Test fabric polyester taffeta (denoted as P-T) knee-up
35-chi polyester taffeta (denoted as pp): Big up 60-chi polyester thick textured yarn fabric (denoted as P-Tax) Knee-up 90-chi nylon taffeta (denoted as N-T): Pick-up 35-chi nylon thick knitted fabric (N- Th1ck): Big up 90% diacetate) (Denoted as D-A): Big up 60 diacetate (Denoted as T-A): Big up 60 Ch (2) Dye and dyeing conditions Dianic Thread, Do KB- 8R (Mitsubishi Chemical Industries, KB
-8E) 5%o, w, f・te4
Suf4-Suv y )'B-2B (1,C,1,,
(written as B-2B) 5 cho, w
, f. Samaron Yellow 6GSL (Hoechst, 6 GS
(denoted as L) 5% o, w
,t.

i4 Ranilieo -3G (RASF, written as 3G) 5chio, w,! .

Using auxiliary agent, acetic acid 0.31711, at 130℃
Dye at a bath ratio of 1:40 for 1 minute, after reduction and washing, neutralize, wash with water, and dry.

(3) Melamine type and treatment concentration (4) Microwave treatment conditions Apollotax (Juukin Kogyo Co., Ltd.) used, output 1.0
kW, temperature 100°C, processing time 10 minutes. After treatment, it was subjected to reduction cleaning, neutralization, washing with water, drying, and testing.

(5) Plasma treatment conditions Electrode: DC method and AC method (13,56 Filz)
(denoted as DC and AC in the table below).

Introduced gas: Use air, oxygen, nitrogen (alt +
02 + N2).

Vacuum degree: 0.02 Torr ~2. OTorr(6
) Processing level A (comparative example) dyeing → reduction cleaning → drying → setting (180℃
x 30 sec) B (Comparative example) staining → melamine treatment → reduction cleaning → drying → set (180°C x 30 sec) C (example) staining →
Melamine treatment → reduction cleaning → drying → setting → plasma treatment D (Example) Dyeing → reduction cleaning → drying → section → plasma treatment The method for measuring the effect is as follows.

1. Test method for sublimation during storage of dyed textile products JIS L-0854, urethane, salt-coated products are subjected to heat treatment at 120° C.XSO under a load of 4.5 kg for evaluation.

2. Evaluation of friction fastness JIS L-0849, single vibration type friction tester, load 200
100 round trips at y.

3. Evaluation of washing fastness JIS L-0844 (A-2 method), attached cloth is cotton, nylon cloth.

4. Evaluation of sweat fastness JIS L-0847, acid, alkali, attached cloth is cotton, nylon cloth.

Table 1 shows the relationship between the type of dye and the fastness according to the processing level rules.

Table 4 shows that by treating various fiber materials dyed with υ1 disperse dyes with melamine and plasma treatment according to the present invention, a remarkable effect of improving fastness can be obtained.

Claims (1)

[Claims] 1. A processing method for improving fastness, which is characterized by impregnating a synthetic fiber material dyed with a disperse dye with melamine or a melamine derivative, then subjecting it to steam treatment, and then subjecting the fiber material to low-temperature plasma treatment under vacuum. .