JPS5825791B2 - Color resist dyeing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to color resist dyeing of textile products, and more particularly to a method for improving the pattern edgeability and sharpness during color resist dyeing using a polyvalent metal compound.

Conventionally, as a resist dyeing method for hydrophobic fibers such as polyester fibers, a chemical multiplication method using a polyvalent metal compound having a chelate bonding property with a dye as a resist dye is known.

Although such resist dyeing methods have excellent continuous printing properties, operational stability, and resist dyeing properties, on the other hand, metal ions in the resist dye are liberated and moved due to pH fluctuations in the resist dyeing paste or printing paste, resulting in discharge printing. A bleed phenomenon similar to the ration phenomenon observed in et al. occurs, resulting in mold failure of colored resist-dyed products and a significant deterioration in quality.

On the other hand, physical resist dyeing methods that use physical adsorbents such as activated carbon and activated clay do not cause the bleeding phenomenon, but not only are the resist dyeing effects inferior, but they also cause screen clogging, especially in automatic screen printing. It has major drawbacks in practical use, such as difficulty in continuous printing and inhibiting the dyeability of differential color dyes.

Resist dyeing methods that use a combined polyvalent metal compound and a physical adsorbent are also known, but if a large amount of adsorbent is used in combination to prevent the bleed phenomenon, the screen may become clogged, which can have the opposite effect. Adding an adsorbent to an extent that does not cause clogging of the screen cannot prevent the bleed phenomenon, and even if they are used in combination, it is impossible to solve the drawbacks of each.

The inventors of the present invention have arrived at the method of the present invention as a result of intensive research in order to effectively prevent the bleed phenomenon without causing the above-mentioned drawbacks and to obtain a colored resist dyed product having excellent mold border properties and sharpness.

That is, the present invention relates to the coloring resist dyeing of textile products using polyvalent metal compounds as resist dyeing agents, and the resist dyeing paste and /''!
It is characterized by adding a metal ion sequestering agent to the printing paste.

When using the method of the present invention, in particular, in colored resist printing using the so-called wet-on-wet method, in which a resist dyeing paste containing a polyvalent metal compound is printed and then a printing paste is printed in a wet state.
The metal ions released from the resist dyeing paste are effectively captured by the metal ion sequestering agent, and the migration of metal ions to the area around the resist dyeing paste printing area can be prevented, resulting in excellent formability and sharpness. .

Another major feature is that it does not impair the dyeability and resist dyeing effect of the separated color dyes.

In the present invention, 1. - Polyvalent metal compounds used include sulfates, nitrates, etc. of copper, barium, nickel, zinc, etc.
Examples include acetates, carbonates, halides, hydroxides, etc., which may be used alone or in combination of two or more.

Considering the chelate bonding ability of polyvalent metal compounds with dyes, the stability of dyes and thickeners, alkaline and acidic polyvalent metal compounds are mixed so that the pH of the resist dyeing paste is approximately neutral to weakly acidic. It is preferable to use them in combination, and it is particularly preferable to use polyvalent metal salts and polyvalent metal hydroxides together.

Further, if desired, the pH can be adjusted by adding an acid or an alkali.

The amount of the polyvalent metal compound used is usually 1 to 50 parts by weight, preferably 5 to 35 parts by weight, based on the resist paste.

Thickening agents used in resist dyeing and printing pastes are preferably those having good compatibility with polyvalent metal compounds, and are usually etherified starch, etherified cellulose guar gum, locust bean gum, or polyvinyl-based thickening agents. is used.

Sequestering agents used include ethylenediaminetetraacetate (2,3,4 alkali metal salts, ammonium salts, etc.), nitrilotriacetate, N-hydroxyethylethylenecyantriacetate, diethylenetriaminepentaacetate, In addition to organic metal ion sequestering agents such as Grineer-# ether diamine tetraacetate and cyclohexane diamine tetraacetate, inorganic metal ion sequestering agents such as condensed phosphates may be mentioned.

These are appropriately selected and used depending on the type of polyvalent metal compound used.

The amount used differs mainly depending on the type and amount of the metal compound used, but it is usually 1 to 10% for resist dyeing paste or printing paste.
10 parts by weight, preferably 2 to 4 parts by weight.

If the amount of metal ion sequestering agent used is too large, the resistance to dyeing will deteriorate, so it is preferable to keep the amount to the minimum necessary, and it is particularly preferable to use it separately for both the resistance dyeing paste and the printing paste.

When used in both resist printing paste and printing paste, the total amount used is 1 to 10 parts by weight, preferably 2 to 4 parts by weight.

Examples of dyes that can be resist-dyed in the present invention include dyes that have a chemical structure that can be chelated with polyvalent metals, dyes that are dispersed with a dispersant that interacts with polyvalent metals, and eliminates the dispersion effect, etc. Specifically, anionic group-containing dyes, disperse dyes dispersed with an anion activator that can react with polyvalent metals, complexes of anionic dyes and cationic compounds, complexes of cationic dyes and anionic compounds, etc. are exemplified. .

However, disperse dyes having a chemical structure capable of reacting with and chelating polyvalent metals are particularly preferred, such as, for example, the like.

In addition, as differential color dyes that can be used for color resist dyeing, there are dyes that do not react with polyvalent metals or have low reactivity, but in particular, disperse dyes that do not react with polyvalent metals and do not chelate or do not easily react with them can be mentioned. Preferable textile products to which this method is applied include knitted fabrics, rugs, nonwoven fabrics, synthetic papers, and fiber sheets containing hydrophobic fibers such as polyester, polyamide, and acetate.

However, hydrophilic fiber products such as cellulose and polyvinyl alcohol can also be applied by making them hydrophobic through etherification or esterification, or by imparting dyeability to disperse dyes through pretreatment with polyhydric alcohols, alkoxymethylated melamine, etc. can.

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

Note that parts in the examples mean parts by weight.

Example 1 A pattern was printed on a polyester 100φ textured yarn fabric (satin) using resist dyeing pastes a and b having the following formulations using a flat screen printing machine.

Then C, I.

The entire surface was overprinted with a printing paste consisting of 113.4 parts of Disbirds Blue, 8 parts of Locust Bean Gum-based paste, and 88 parts of water, dried, steamed at 130°C for 30 minutes, washed with water, soaped, and dried. .

As a result, there was no cross-mold bleeding of the differential color dye using the resist dyeing paste a according to the present invention, and a colored resist-dyed surface with excellent mold-crossability and clarity was obtained.

On the other hand, when the resist dyeing paste of the comparative example was used, the differential color dye tended to bleed, and the colored resist dyed surface was poor in clarity and poor clarity at the edge of the mold.

Example 2 The resist dyeing paste of Example 1 was printed in a pattern on a 100-thread polyester processed yarn fabric using a flat screen printing machine, and then a printing paste with the following formulation was overprinted on the entire surface and dried. After steaming at 175° C. for 8 minutes using a high-temperature steamer, washing with water, soaping, rinsing with water, and drying were performed.

As a result, a colored resist-dyed surface of orange color on a black background with excellent mold borderability and clarity was obtained.

Example 3 A resist dyeing paste having the following formulation was printed in a pattern on a polyester 100 multi-textured yarn fabric (suede) using a flat screen printing machine.

Resist dyeing paste and then printing paste with the following recipe are overprinted on the entire surface,
After drying, it was steamed at 130° C. for 25 minutes in a high-pressure steamer, washed with water, washed with soap, and dried.

As a result, a colored resist-dyed surface of red on a black background with extremely excellent mold borderability and sharpness was obtained.

Example 4 In place of Frewat K in Example 2, nitrilotriacetic acid, 2Na salt, diethylenetriaminepentaacetic acid/3Na salt,
Cyclohexanediaminetetraacetic acid and 4Na salt were added to the resist dyeing lateral movement and the printing paste, respectively, and colored resist dyeing was performed in the same manner as in Example 3.

As a result, colored resist-dyed surfaces with extremely excellent mold border properties and sharpness similar to those of Example 3 were obtained in all cases.

Claims (1)

[Scope of Claims] 1. Coloring resist dyeing of textile products using a polyvalent metal compound as a resist dyeing agent, which is characterized by adding a metal ion sequestering agent to the resist dyeing side 1 and/or printing paste. Resistance method. 2. The method according to claim 1, wherein a water-soluble polyvalent metal compound and a polyvalent metal hydroxide are used together as the polyvalent metal compound.