JPH0913282A - Dyeing of cellulose fiber-containing material - Google Patents

Abstract

PURPOSE: To dye a cellulose fiber-containing material in good color development. CONSTITUTION: In the method for dyeing a cellulose fiber-containing material by padding the cellulose fiber-containing material with a reactive dye padding solution not containing a dye fixing solution or printing the cellulose fiber- containing material with a reactive dye, drying and providing the dried cellulose fiber-containing material with 15-50wt.% of the dye fixing solution and further treating the material with steam, sodium acetate or potassium acetate is added to the padding solution or the printing sizing.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for dyeing a material containing cellulose fibers. More specifically, the present invention relates to a method for dyeing a material containing cellulose fibers, which does not use urea or water glass.

[0002]

2. Description of the Related Art In a method of dyeing a material containing a cellulose fiber by a continuous dyeing method or a printing method, a method of fixing a dye to a dyeing cloth by dry heat or steaming after the dyeing is generally performed. In that case, a large amount of urea is usually used in order to enhance the levelness, color development and reproducibility of the dye. However, urea is scarcely consumed in the dyeing process and is contained in the wastewater, and when it is mixed in the river, it causes an increase in nitrogen and causes environmental pollution.

In order to avoid such a problem, there is a two-bath pad steam method as a continuous dyeing method which does not use urea, but water glass or a high-concentration electrolyte alkaline solution must be used as a fixing solution. However, water glass has a problem that it deteriorates the washability of the dyed product, inhibits agglomeration of dye residues in the wastewater during wastewater treatment, and precipitates in the drainage pipe to block the drainage pipe. In addition, since the high-concentration electrolyte alkaline solution contains a large amount of water,
There was a problem with dye bleeding and reproducibility during steaming.

As a method for solving such a problem, the present inventors reduced the amount of the fixing liquid applied first, so that dye bleeding or steaming can be performed without using water glass or a high concentration electrolyte alkaline liquid. We proposed a method to improve time reproducibility. (See Japanese Patent Publication No. 7-3036)

[0005]

However, if the fixing liquid is applied in a small amount, the fixing liquid may not be uniformly applied to the dyed cloth, or the material containing cellulose fibers may not be uniform or may be dyed unevenly. When the cloth becomes wrinkled or dust is attached, there is a risk that the dyed cloth will be scratched.

[0006]

Means for Solving the Problems The present inventor has diligently studied a dyeing method which avoids the above-mentioned dangers, and prevents fading and color development defects without using urea, water glass, etc. and has high reproducibility. As a result of the repetition, the present invention has been reached. That is, the present invention relates to a method for padding a cellulose fiber-containing material with a reactive dye padding solution containing no dye fixing solution or printing with a reactive dye printing paste, followed by drying, and then drying the dye fixing solution with the dried cellulose fiber containing material. 15 to 50% by weight to
Further, the gist of the method for dyeing a cellulose fiber-containing material to be steam-heat treated is to add sodium acetate or potassium acetate to the padding solution or the printing paste.

Hereinafter, the present invention will be described in detail. INDUSTRIAL APPLICABILITY The present invention is applied to a method of dyeing a cellulose fiber-containing material by a two-bath method or a two-phase method for printing. That is, the cellulose fiber-containing material is padded with a padding liquid containing a reactive dye or is printed with a printing paste containing a reactive dye and then dried once, and then the fixing liquid is applied to the cellulose fiber-containing material.
5 to 50% by weight is applied, and this is steamed. As a method for applying the fixing liquid, a spray method, a kiss roll method, a bubble application method, an indirect belt transfer method, etc. are adopted.

In the present invention, sodium acetate or potassium acetate is added to the padding liquid or the printing paste. The addition amount varies depending on the material, the kind of dye, the dye concentration, etc., but is 5 to 50 g / l for the padding liquid, preferably 10 to 30 g / l, and 5 to 50 g / k for the printing paste.
g, preferably 10 to 30 g / kg. If the amount added is too small, the effect of preventing fading and poor color development is insufficient. If the amount added is larger than the above amount, the solubility of the dye may decrease and the dye may precipitate, which is not preferable. Moreover, the pH of the padding liquid or the printing paste is less than 8.

[0009]

EXAMPLES Next, the present invention will be described more specifically with reference to Examples and Comparative Examples. Example 1 A cotton twill that had been scoured, bleached and mercerized was padded with a padding solution made up to 1 liter by adding water to the following dyes and auxiliaries and dried at 100 ° C. for 2.5 minutes. On the other hand, in order to apply the fixing liquid by the indirect belt transfer method, a belt made of vinylon spun fabric is impregnated with the fixing liquid of the following composition, and 109% by weight of the belt is impregnated with a pressure squeeze, and the dye is dried after padding. It was brought into contact with the surface of the fabric (dye-applied side) and pressed at a pressure of 3.0 kg / cm ² to transfer 30% by weight of the fixing liquid to the fabric. Next, the dough was steamed at 103 ° C. for 60 seconds, washed with water, soaped, washed with water, and dried. As a result, a dyed cloth with good color development on both the front and back was obtained.

(1) Dye padding liquid Dye ^{* 1} 160 g Sodium alginate ^{* 2 2} g Sodium metanitrobenzene sulfonate ^{* 3} 10 g Sodium acetate 20 g Water xml ──────────────────── ────────── Total 1 liter ^{* 1} Remazol Brill. Blue R-KN Liq. 50 [Mitsubishi Kasei Hoechst Co., Ltd., Remazol is a registered trademark of Hoechst] ^{* 2} Kibun, trade name: Duck Algin NSPM ^{* 3} Meisei Chemical, trade name: MS powder

(2) Fixing solution Sodium sulfate 80 g Sodium carbonate 80 g Sodium hydroxide solution (38 ° Baume) 30 ml Water x ml ─────────────────────── 1 liter in total

COMPARATIVE EXAMPLE 1 Dyeing was performed in the same manner as in Example 1 except that sodium acetate was not added to the padding solution, and the back surface of the dyed cloth was scratched.

Example 2 Cotton satin that had been scoured, bleached and mercerized was printed with a printing paste having the following composition and dried at 100 ° C. for 2 minutes. Then, a belt made of vinylon spun fabric was impregnated with a fixing solution having the following composition in the same manner as in Example 1, and the belt was wrung at 74% by weight.
After impregnation, the dye was printed and brought into contact with the surface of the dried cloth, and the cloth was squeezed at a pressure of 3.0 kg / cm ² to transfer 22% by weight of the fixing liquid. After that, the dough was steamed at 103 ° C. for 60 seconds, washed with water, soaped, washed with water, and dried. As a result, good color development was shown.

(1) Printing paste Dye ^{* 1} 120 g Original paste ^{* 4} 630 g Sodium acetate 20 g Water 230 g ─────────────────── Total 1000 g ^{* 1} Same as Example 1 ^{* 4} Original glue water 646g Sodium hexametaphosphate 5g Sodium alginate ^{* 2} 24g Sodium metanitrobenzenesulfonate ^{* 3} 15g Emulsifier ^{* 5} 10g Mineral terpene 300g ──────────────────── ────────── Total 1000g ^{* 2} Same as Example 1 ^{* 3} Same as Example 1 ^{* 5} Hoechst Industry Co., Ltd., trade name: Emergy Fire DMR

(2) Fixing solution Sodium sulfate 30 g Sodium carbonate 30 g Sodium hydroxide solution (38 ° Baume) 15 ml Water x ml ─────────────────────── 1 liter in total

Comparative Example 2 The amount of the original paste was 650 without adding sodium acetate to the printing paste.
Dyeing was performed in the same manner as in Example 2 except that the value was changed to g.

[0017]

According to the present invention, the cellulose fiber-containing material can be dyed in good color without causing any blur even when the amount of the fixing liquid applied is small. In addition, since the present invention does not use water glass or a high-concentration alkaline solution used in the two-bath method, not only can the washing property in the post-treatment process and the load in wastewater treatment be reduced, but urea is not used at all. It also contributes to environmental protection.

Claims (2)

[Claims] 1. A cellulose fiber-containing material, which is padded with a reactive dye padding liquid containing no dye fixing liquid or printed with a reactive dye printing paste and then dried, and then the dye fixing liquid is dried. For 15 to 50
A method for dyeing a cellulose fiber-containing material, which comprises imparting weight% and is further steam-heat treated, wherein sodium acetate or potassium acetate is added to the padding solution or the printing paste. 2. The amount of sodium acetate or potassium acetate added is 5 to 50 g / l for the padding solution and 5 to 50 g / kg for the printing paste. Dyeing method.