JPS60199987A - Differential density dyeing of polyester fiber - 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] Technical Field> The present invention #- has a birefringence difference of 20X10-3 or more J! ! The present invention relates to a method for dyeing polyester fiber TL-containing components in shading or different colors.

Background field〉 Is it possible to dye polyester fibers with different shades of birefringence using disperse dyes at low temperatures? However, the light fastness was poor, causing problems in practical use, and it was impossible to obtain different colors even by using various dyes.

The present inventors have solved the problems of such low-temperature dyeing and have completed a technique that enables not only dark and light dyeing but also μ color dyeing.

<Object of the invention> The object of the invention is to have a birefringence difference of 20X10-3 or more! The purpose is to dye polyester fibers in shading or different colors with good fastness using a fully dispersed dye consisting of component A.

<Structure of the Invention> When dyeing polyester fibers consisting of components whose birefringence difference is 20X10-3 or more in yarn or fabric constituent fibers, the present invention is applied to dyeing polyester fibers consisting of components whose birefringence differs by 20X10-3 or more in water or water containing a dye.
After high pressure and high temperature treatment from ℃ to 140℃, 50 to 10
The gist of this paper is a method for dyeing polyester fibers in different shades of color, which is characterized by dyeing with freshly added dye and dyeing carrier in a bath at 0°C.

The most important feature of this invention is that the first stage is dyed under high pressure to achieve good fastness, and the second stage is dyed at a low temperature using a different dye and carrier, and only the areas with low stretchability are dyed with high fastness. It lies in the fastness of dyeing.

In other words, the major feature of this method is that it has been found that polyester fibers in low-stretch areas are treated with high pressure and high temperature and then dyed with a carrier at a low temperature, resulting in fast and uniquely colored dyeing.

Therefore, if the dye is simply dyed with a carrier at a low temperature, it will not be possible to obtain a product with a high color fastness, and the quality will be poor.

The polyester fiber of the present invention consisting of components having a birefringence difference of 20X10-3 or more is a polyester fiber consisting of a component having a birefringence difference of 20X10-3 or more in the yarn direction or between fibers or fibers in the fabric structure. Therefore, if the birefringence difference is less than 20×10 −3 , it is impossible to dye with a different color effect or good fastness in the second step of dyeing.

High pressure and high temperature treatment at 110 to 140° C. f# is useful not only for uniform dyeing with disperse dyes but also for more robust dyeing in the second step. That is, by heat treatment at high temperature, the crystallinity of polyester fibers, especially the portions with low birefringence, increases, and this serves to firmly hold the dye adsorbed during carrier low-temperature dyeing.

Of course, if the second step is dyed with a different hue from the first step, it will give a different color effect, or if the first step is dyed with a similar color, or if the first step is only high pressure treatment and all dyeing is done in the second step, only a shading effect will be produced. You can get money. The first stage processing is 11
It is impossible to dye with good food fastness in the first and second stages below 0°C and 10°C. The dye used may be a normal disperse dye, and may be used as necessary.

The next two-stage process uses a disperse dye of the same hue as the first stage or a different color, and an ortho dye as an auxiliary agent.

Rose, meta phenylphenol, di.

Any of trichlorobenzene, α- or β-methylnaphthalene, methyl diphenylsalicylate, diphenyl ether, diphenyl sulfone, diethylene phenyl glycol G Compounds that contribute to the dissolution of disperse dye R or swelling of polyethylene terephthalate, and emulsifiers if necessary A so-called dyeing carrier consisting of a total of 0.1 to 2 weight t% may be added to the dye bath and dyed at 50 to 100°C.
At temperatures below 0°C, it is impossible to dye the low birefringence portion in a deep, fast color. If the temperature exceeds 100° C., a level dyeing effect may occur and the low birefringence portion and the high birefringence portion may be dyed in the same color, which is not preferable. The dyes in the first and second stages may be exactly the same, but it is important to add new dyes.

The remaining 1C re-dyed dye hardly produces any shading effect.

The present invention will be explained below with reference to all embodiments.

In addition, "part" and "person in charge" in the examples respectively refer to "part by weight".
, all expressed in "% by weight".

Example 1 Polyester fiber 75e with birefringence of 160X1ff'
L/36f, polyester with birefringence index 30X10-3 (
[M16D/24F is used to dye Jacquard fabric woven so that the low birefringence fibers stand out in the floral pattern.
．． As a result of sequential dyeing in two steps in the order of 2, washing and drying, a beautiful unique fabric with a yellow background and red floral pattern was obtained.

In addition, in dyeing condition 2 carried out for comparison, which was dyed sequentially under dyeing conditions without adding a carrier, red dye was also dyed, and the orange background was dyed with a deep orange floral pattern with a slight red color. The water fastness of the flower pedicel was grade 1-2, which was very rare.Furthermore, as a comparison, the flower pedicel was dyed red in one piece when dyeing condition 2 was carried out without dyeing condition 1. The color fastness to alcohol was 2-3 grade, which was unsatisfactory.

[Dyeing conditions 1] Diax Yellow YL-6L 2.4% (to fiber) (disperse dye manufactured by Mitsubishi Kasei ■) Disper TL 0.5 t/l (dispersion and leveling dyeing aid manufactured by Kaisei Chemical Co., Ltd.) Ultra MTN-2 [1 , 5f/l (pH adjuster made by Miwajima Chemical) Bath ratio 1:30 Processing temperature/time 130°C x 60 minutes [Dyeing conditions 2] Tire X Red FL-FS 1.5% (based on fiber) (Mitsubishi Kasei) Disperse dye (Made in Japan) Disper TL 0.5t/l Ultra IT N-20,5? /l Methylnaphthalene 30% emulsion 1% (versus dyeing bath) Bath ratio 1
:30 Treatment temperature/time 90°C x 60 minutes Example 2 Birefringence in the fiber axis direction is 40X10-' and 90X10
-2 components of 3? ! polyester fiber 136d/30
Jersey knitted fabric using f thread? It was dyed in two steps in the following dyeing da>fl: 5.4 order and washed and dried under normal conditions. What was obtained was a beautiful silk fabric in which the low birefringence area was dyed blue and the high birefringence area was dyed yellow.

[Dyeing - 5 items 3] Diax Yellow G-FSl, 3% (for fiber)
(Disperse dye manufactured by Mitsubishi Kasei Corporation) Disper TL O, 5t/l Ultra MT N-20, 59/1 Bath ratio 1:40 Processing temperature/time 135°C x 60 minutes [Dyeing conditions 4] Diamond sprue BG- FB 0.8% (based on fiber) (Disperse dye manufactured by Mitsubishi Kasei Corporation) Disper TL 0.5t/l Ultra MT N-20,59/l Diethylene glycol monophenyl ether 0.5%
(Counter-dyeing bath) Bath ratio 1:40 Processing temperature/time 70°C x 60 minutes <Effects of the invention> The present invention uniquely uses the above-mentioned structure to fabricate yarns or fabrics of F-polyester fibers. Alternatively, it is possible to carry out dyeing in dark and light colors. It has a good effect.

Claims (1)

[Claims] When dyeing polyester fibers consisting of components with a birefringence difference of 20XIQ-3 or more, after performing high-pressure and high-temperature treatment at 110 to 140°C in water or water containing dye, 50
A method for dyeing polyester fibers in different shades of color, characterized by dyeing with a newly added dye and a dyeing carrier in a bath at ~100°C.