JPS60126390A - Improvement in color forming property of cotton-containing product - 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 a method for improving the color development of textile products containing cotton fibers. Concerning treatment methods for improving sexual performance.

Conventionally, as a method for improving the color development of cotton products, a process of scouring, bleaching, preferably mercerizing, and then dyeing has been adopted. However, the whitening of cotton tends to decrease due to the heat history it receives during dyeing.
In particular, when dyeing very light colors, it is difficult to obtain the desired color tone, and the color tone tends to fluctuate.
It has drawbacks such as dull color tone in vivid dyeing, and it is difficult to obtain dyed products with high reproducibility.

The present inventors have arrived at the present invention as a result of intensive research into a method for obtaining vivid staining with good reproducibility. That is, the present invention is characterized in that the cotton-containing product is dyed without bleaching and then treated with a dilute peroxide solution.

The cotton-containing product to which the method of the present invention is applied is cotton 100.
% products as well as mixed products of cotton and other fibers such as polyester fibers. The form of blending may be arbitrary, such as blended spinning, mixed knitting, multilayer structure, composite (cover yarn), etc., and the product may be arbitrary, such as traps, slivers, threads, knitted fabrics, nonwoven fabrics, rugs, towels, sewn products, etc.

Cotton-containing products are dyed or printed with dyes that have an affinity for cotton fibres, and it is particularly preferred to use reactive dyes. In addition, in the case of mixed products with other fibers, dyeing or printing may be carried out using a dye having an affinity for the fibers. Dyeing conditions The usual conditions used for dyeing cotton are employed.

In the present invention, after dyeing, the dye is treated with a dilute peroxide solution. Examples of the peroxidant to be used include hydrogen peroxide, sodium perborate, and sodium percarbonate, with hydrogen peroxide being particularly preferred. The concentration of the peroxidant is usually 1-109/l in terms of 30-layer hydrogen peroxide solution.

Preferably 2-79/l, 40-90'C, 20-6
It is denatured for about 0 minutes.

When the method of the present invention is used, it is possible to provide a dyed product with excellent color development and vividness, as well as good strength. Another great advantage is that these effects can be obtained without adding any special steps.

The present invention will be explained below with reference to Examples.

Example A jersey knitted fabric (30hφX28G, basis weight 15o 9/wl) made of cotton yarn (e o 'B/2) mercerized for 60 seconds with a 20% caustic soda aqueous solution at room temperature was processed as follows.

The dyed fabric was processed through the process, and the changes in the process and the color development and strength of the dyed fabric obtained were measured, and the results shown in Table 1 were obtained.

■ Scouring Neugen HO29/1 (Dai-Kogyo Seiyaku Co., Ltd., non-ionic scouring agent) Soda ash 29
/1 Bath ratio 1:40.80°C for 60 minutes Bleach hydrogen peroxide solution (30%) 109/1 Caustic soda 29/l Hyper N 29/1 (Daito Pharmaceutical Co., Ltd., stabilizer) Neugen HO29/1 (Dai-Kogyo Co., Ltd.) Pharmaceutical company, penetrating agent) Bath ratio 1:40.80℃ 60 minutes■ Dyeing■ -1 Sumifix Red 3 BFO, 1% ow
f (Sumitomo Chemical Co., Ltd., reactive dye) Glauber's salt 409/1 Tuda carbonate l O9/1 Bath ratio 1:40.60℃60 minutes ■ -2 DiamirIL'Turq Blue G O+L
%0Wf (Mitsubishi Chemical Company, reactive dye) Glauber's salt 409/1 Soda carbonate l O9/1 Bath ratio 1:40 80℃ 60 minutes ■ Peroxidation treatment after dyeing Hydrogen peroxide solution (30%) 59/1 Caustic soda 19/! Hyper N19/l Neugen HO29/1 Bath ratio 1:40 80°C for 40 minutes As a result, the dyed fabric according to the present invention had good strength and excellent color development.

Patent applicant: Toyobo Co., Ltd.

Claims (1)

[Claims] A method for improving the color development of cotton-containing products, which comprises dyeing the cotton-containing products without bleaching them and then treating them with a dilute peroxide solution.