JPH08302570A - Production of coating processed fabric of polyester-based textile material - Google Patents

Abstract

PURPOSE: To prevent the fouling from occurring in a polyester-based textile material dyed with a disperse dye due to the migration and sublimation of the dye. CONSTITUTION: A polyester-based textile material is treated with a reactional product prepared by carrying out the cocondensation of (A) dicyandiamide as an essential component with at least one or more of (B) compounds of the following general formula H2 NCH2 CH2 (NHCH2 CH2 )m NH2 [(m) denotes an integer of 0-6] and/or (C) formaldehyde or further a water-soluble salt such as an aluminum, a magnesium or a calcium salt and then performing the coating processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a coated cloth in which a polyester fiber material dyed with a disperse dye is prevented from being contaminated by migration sublimation of the dye.

[0002]

2. Description of the Related Art Polyamide-based and polyester-based fiber materials have heretofore been subjected to coating processing in order to impart functionality such as water repellency, waterproofness, stain resistance, and moisture permeation waterproofness. However, since polyamide-based fiber materials have essential defects such as dimensional stability, light resistance, and wet fastness, the dimensional stability, strength, light resistance, and fiber composition and tissue diversity, etc. The fiber material to which the coating process is applied is shifting to a relatively inexpensive polyester fiber material having various advantages.

Disperse dyes are mainly used for dyeing polyester fiber materials. However, when coating a polyester fiber material dyed with a disperse dye, the disperse dye has an affinity and solubility for the coating resin and organic solvent used. Due to the shift, problems such as bleeding of the dye and deterioration of friction fastness occur. This is a phenomenon generally known as contamination due to migration and sublimation of the dye, and the resulting adverse effect. In order to solve this problem, various methods for preventing contamination by migration sublimation have been studied so far.

As a method previously proposed as a method for preventing migration and sublimation of disperse dyes, a melamine resin (Japanese Patent Laid-Open No. 59-82469) and fluorine are used as a barrier layer so that the disperse dyes do not migrate to the surface of the polyester fiber material. Water-repellent resin such as resin and silane resin (Japanese Patent Laid-Open No. 4-1747)
76) and a low temperature plasma treatment as a method for modifying the surface of a polyester fiber material (Japanese Patent Laid-Open No. 61-9).
7467), ultraviolet irradiation (Japanese Unexamined Patent Publication No. 4-11068) and the like, and microporous inorganic fine particles as a substance for adsorbing a disperse dye in a coating resin (Japanese Unexamined Patent Publication No. 2-2).
51672) may be included, but in any case, this problem cannot be completely solved. In addition, the treatment causes poor processability and texture, weak adhesion between the coating resin layer and the polyester fiber material, lower peel strength, and the need for a special device.

[0005]

DISCLOSURE OF THE INVENTION The present invention is intended to prevent staining due to dye transfer sublimation of a polyester fiber material dyed with a disperse dye, without impairing processability, and to improve dyeability and texture. The present invention relates to a method for producing a coated cloth that does not affect the above.

That is, according to the present invention, when coating a polyester fiber material dyed with a disperse dye, A) dicyandiamide B) a compound represented by the following general formula H ₂ NCH ₂ CH ₂ (NHCH ₂ CH ₂ ) _m NH ₂ [where m represents an integer of 0 to 6] C) A reaction in which A) of formaldehyde is an essential component and this is co-condensed with at least one or more of B) and / or C). Among the products, it is a method for producing a coated cloth, which comprises coating a polyester-based fiber material with one kind or two or more kinds, and then performing a coating process,
Further, it is a gist of a manufacturing method in which a water-soluble salt of aluminum, magnesium or calcium is used in combination in the step of treating a polyester fiber material with the above reaction product.

According to the research conducted by the present inventors, by treating a dyed polyester fiber material by the method of the present invention, it is possible to impart an excellent effect of preventing dye migration and sublimation to the fiber material. It has been found that the discoloration of the material due to processing and the deterioration of the texture are minimized.

The present invention will be described in more detail below.

As the compound A) used in the present invention, dicyandiamide is used.

The compound B) used in the present invention includes compounds represented by the following general formula. H ₂ NCH ₂ CH ₂ (NHCH ₂ CH ₂ ) _m NH ₂ [where m represents an integer of 0 to 6] Of these, the ease of obtaining the reaction product, the reaction control and the handling of the raw material and the reaction product Considering the easiness of the reaction, and at the same time the ability to prevent the transfer sublimation of the reaction product, ethylenediamine, diethylenetriamine and triethylenetetramine are particularly suitable.

As the compound C) used in the present invention, an aqueous solution of formaldehyde, an alcohol solution of formaldehyde, and a formaldehyde precursor (rose formaldehyde, urotropin, etc.) can be used.

Further, by adding an acid-generating substance such as an inorganic acid such as hydrochloric acid or sulfuric acid and a salt thereof, or an ammonium salt of an inorganic acid such as ammonium chloride, the reaction is satisfactorily proceeded, and the solubility is improved. In view of the above, it is easy to handle and it is possible to obtain a reaction product having good performance.

A condensation reaction product is produced by mixing A) as an essential component with at least one or more of B) and / or C) and heating.

Following this, by mixing 1 to 2 mol of dicyandiamide and 1 to 2 mol of formaldehyde and heating to 40 ° C., 0.1 to 0.5 mol of hydrochloric acid is added dropwise and stirred for 1 to 10 hours. A condensation product is obtained.

By mixing 1 to 2 mol of dicyandiamide, 1 to 2 mol of polyethylene polyamine and 0.1 to 0.5 mol of hydrochloric acid and heating to 140 ° C. and stirring at this temperature for 5 to 20 hours, a condensation reaction product is obtained. can get.

1 to 2 mol of dicyandiamide, 1 to 2 mol of diethylenetriamine, 1 to 2 mol of formaldehyde,
Mix 0.1 to 0.5 mol of ammonium chloride and 140 ℃
The condensation reaction product is obtained by heating the mixture to room temperature and stirring at this temperature for 5 to 10 hours.

A) and B) when co-condensing A) and B)
The weight ratio of is usually 1: 0.1-10, preferably 1: 0.5-4.

A) and C) when co-condensing A) and C)
The weight ratio of is usually 1: 0.1-10, preferably 1: 0.5-4.

When A), B) and C) are co-condensed, the weight ratio of A), B) and C) is usually 1: 0.1-10:
0.1-10, preferably 1: 0.5-4: 0.
5 to 4.

It is also possible to improve the effect of preventing transfer sublimation by using a water-soluble polyvalent metal salt in combination with the product obtained by condensing A) with B) and / or C).

The water-soluble polyvalent metal salt used in the present invention includes aluminum salts such as aluminum sulfate, aluminum chloride and polyaluminum chloride, magnesium chloride,
Examples thereof include magnesium salts such as magnesium hydroxide and magnesium sulfate and calcium salts such as calcium chloride.

The ratio of the condensation product to the water-soluble polyvalent metal salt is usually 1: 0.01-5, preferably 1: 0.1-1.
Is. Even if the amount of the water-soluble metal salt used is more than this, the effect of the present invention is not particularly hindered, but the improvement of the effect is not accompanied by the improvement of the amount used, and the discoloration or the change in the texture during the treatment Since adverse effects such as the above may occur, use within this range is appropriate.

As the polyester fiber material used in the present invention, for example, polyester 10 made of polyethylene terephthalate, polybutylene terephthalate or the like is used.
In addition to 0% woven and knitted fabrics and non-woven fabrics, there are cloth foils, mixed woven fabrics, mixed knitted fabrics, films, sheets and the like, which are made of mixed spun yarns, mixed fiber yarns or twisted yarns which essentially require a polyester fiber material.

Any of the conventional processing methods may be used to apply the condensation product of the present invention to the fibrous material.
For example, the padding method includes pad dry method, bad dry cure method, pad steam method, and pad dry method.
Other examples include a roll method and a spray method.

The treatment liquid of the above condensation product can be used as an aqueous solution or a dispersion liquid. The treatment liquid can be adjusted to pH 3 to 10 with various acids and bases, but is preferably used at pH 5 to 8.

[0027]

EXAMPLES The features of the present invention will be further clarified by giving examples and comparative examples below. However, the present invention is not limited to the following examples. Parts and% in the examples are parts by weight and% by weight, unless otherwise specified.

Synthesis Example 1 (Synthesis of Dicyandiamide Formaldehyde Condensate) 1 mol of dicyandiamide and 2 mol of formaldehyde were mixed and heated to 40 ° C., and then hydrochloric acid (3
(5%) 0.5 mol was added dropwise and stirred for 1 hour to condense. Then, it was dried and adjusted to pH 7 with caustic soda to obtain a dicyandiamide-formaldehyde condensate.

Synthesis Example 2 (Synthesis of dicyandiamide / diethylenetriamine condensate) 1 mol of dicyandiamide, 1 mol of diethylenetriamine and 0.1 mol of ammonium chloride were mixed and heated to 140 ° C. and stirred for 10 hours to obtain a dicyandiamide / diethylenetriamine condensate.

Synthesis Example 3 (Synthesis of a dicyandiamide / diethylenetriamine / formaldehyde condensate) 1 mol of dicyanamide, 1 mol of diethylenetriamine, 0.5 mol of formaldehyde and 0.1 mol of ammonium chloride were mixed and heated to 140 ° C. and stirred for 10 hours to form dicyandiamide. -A diethylenetriamine-formaldehyde condensate was obtained.

Example 1 A polyester tropical fabric was prepared by using a disperse dye (Sumika).
ron Red S-RPD (S)) 4% o. w. f.
Was dyed under the conditions of 130 ° C. for 30 minutes, reduced and washed in a usual manner, washed with water, dried, and then heat set at 170 ° C. for 45 seconds to obtain a dyed cloth (1).

This dyed cloth (1) was dipped in a pretreatment bath having the following composition, and picked up with a mangle to 90% pickup,
After drying at ℃ × 2 minutes, curing was performed at 170 ℃ × 1 minute. Pretreatment bath Dicyandiamide-formaldehyde condensate (Synthesis example 1) 2% Water 98%

Next, a prepared solution in which coating resins having the following compositions were uniformly mixed was coated with a knife coater and then dried at 80 ° C. for 1 minute to obtain a coated cloth having a coating amount of 30 g / m ² . Coating treatment Urethane resin solution (Krisbon 2016 EL) 100 g Isocyanate compound (Krisbon NX) 3 g (above, Dainippon Ink and Chemicals, Inc.)

Example 2 A dyeing cloth (1) was used in a pretreatment bath having the following composition.
After performing the same pretreatment as in (1), the same coating treatment as in Example 1 was performed. Pretreatment bath Dicyandiamide / formaldehyde condensate (substance of Synthesis Example 1) 1% Polyaluminum chloride 0.5% Water 98.5%

Comparative Example 1 As a comparison, Example 1 was repeated except that the pretreatment of Example 1 was omitted.
A coated cloth was obtained under the same conditions as above.

Evaluation Test The transfer sublimation fastness of the disperse dyes in Examples and Comparative Examples was evaluated by the following method.

5 cm × 5 cm of the coated test cloth treated in the examples and comparative examples, and a 5 cm × 5 cm coated cloth of the same white cloth as the coating test cloth coated with the same coating resin were contacted with each other. It was sandwiched between two plates, and a load of 4.5 kg was placed on the glass plate, and heat treatment was carried out in a high temperature heat treatment device at 120 ° C. for 80 minutes, to give a coated white cloth. Contamination due to dye transfer sublimation was rated on a gray scale. Table 1 shows the results.

[0038]

[Table 1]

Example 3 Dyeing cloth (2) was obtained by dyeing polyester taffeta fabric under the same conditions as in Example 1.

This dyed cloth (2) was dipped in a pretreatment bath having the following composition, picked up with a mangle to 35% of the pickup, dried and cured in the same manner as in Example 1. Pretreatment bath Dicyandiamide / formaldehyde condensate (Synthesis example 1) 3% Water 97%

Next, a prepared solution prepared by uniformly mixing coating resin having the same composition as in Example 1 was coated with a knife coater, dried at 80 ° C. for 1 minute, and the coating amount was 10 g / m ^2.
A coated cloth of

Example 4 A dyeing cloth (2) was used in a pretreatment bath having the following composition in Example 3
After performing the same pretreatment as in (3), the same coating treatment as in Example 3 was performed. Pretreatment bath Dicyandiamide / diethylenetriamine condensate (Substance of Synthesis Example 2) 3% Water 97%

Example 5 A dyeing cloth (2) was used in Example 3 in a pretreatment bath having the following composition.
After performing the same pretreatment as in (3), the same coating treatment as in Example 3 was performed. Pretreatment bath Dicyandiamide / diethylenetriamine / formaldehyde condensate (Substance of Synthesis Example 3) 3% Water 97%

Comparative Example 2 As a comparison, Example 3 was repeated except that the pretreatment of Example 3 was omitted.
A coated cloth was obtained under the same conditions as above.

The invention and comparative coated fabrics were tested for their ability to prevent dye transfer sublimation. The results are shown in Table 2.

[0046]

[Table 2]

It is clear from Tables 1 and 2 that the coated fabric according to the method of the present invention has an excellent disperse dye transfer sublimation preventing property.

[0048]

The coated cloth of polyester fiber material dyed with the disperse dye obtained according to the present invention has an excellent ability to prevent migration sublimation. Moreover, since it can be produced by a usual method, it is possible to provide a coated cloth having excellent practicability.

Claims (2)

[Claims] 1. When coating a polyester fiber material dyed with a disperse dye, A) dicyandiamide B) a compound represented by the following general formula: H ₂ NCH ₂ CH ₂ (NHCH ₂ CH ₂ ) _m NH ₂ [ However, m represents an integer of 0 to 6] C) A reaction product obtained by co-condensing C) formaldehyde A) as an essential component and at least one or more of B) and / or C). Among them, a method for producing a coated cloth, which comprises subjecting a polyester-based fiber material to one or more kinds and then performing coating. 2. The process according to claim 1, wherein a water-soluble salt of aluminum, magnesium or calcium is used in combination in the step of treating the polyester fiber material with the reaction product. The manufacturing method described.