JPS6244076B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for dyeing ester-based synthetic fibers with disperse dyes or dispersed azoic dyes, and specifically relates to a continuous dyeing method such as a steaming method using normal pressure superheated steam (hereinafter referred to as HTS method), a dry heat thermosol method, etc. The present invention relates to a method for dyeing ester-based synthetic fibers, which allows obtaining dyed products with a high dyeing rate and good fastness. Conventionally, in continuous dyeing methods such as the HTS method and the dry heat thermosol method, methods using polyalkylene glycol fatty acid esters, polyhydric alcohol fatty acid esters, solvents, etc. are known as deep dyeing agents to increase the fixation rate. However, these have the disadvantage that if the dyeing rate is high, the dye will coagulate, making it impossible to obtain an evenly dyed product, or even if an evenly dyed product is obtained, it will bleed, making it difficult to sharpen the pattern. There are many cases. In order to eliminate such drawbacks, the inventors of the present invention,
As a result of extensive research, we have developed a dyeing method that allows continuous dyeing using the HTS method or dry heat thermosol method to achieve a fixation rate that is equal to or higher than that of the conventional batch dyeing method, and at the same time produces uniformly fast dyed products. He came to invent this. That is, in the present invention, when dyeing ester-based synthetic fibers, the following general formulas (1) and (2) are used. (However, R is H or CH ₃ group, M is H,
Indicates Na, K, 1 is an integer from 1 to 30, m, n is 2
Indicates an integer between ~10. ) This relates to a method for dyeing ester-based synthetic fibers, characterized by attaching a disperse dye, etc. to the fiber in the presence of at least one compound represented by be. According to the dyeing method of the present invention, the dyeing power for ester-based synthetic fibers is improved, and a uniformly fast dyed product can be obtained without dye agglomeration. The compound of general formula (1) used in the present invention is ethylene glycol, polyethylene glycol,
m + 1 mole of one type of propylene glycol, polypropylene glycol, etc. (however, m represents an integer from 2 to 10) and one type of terephthalic acid or phthalic acid, etc.
This is a polyester compound having OH groups at both ends obtained by condensation reaction with m moles of seeds by a known method. The compound of general formula (2) consists of n moles of one of the above ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, etc. (where n is an integer from 2 to 10) and one of terephthalic acid or phthalic acid. It is a polyester compound having carboxyl groups at both ends obtained by condensation reaction with n+1 moles by a known method. In obtaining the compounds of the present invention, lower alcohol esters thereof can also be used instead of terephthalic acid or phthalic acid. In that case, the terminal becomes a lower alcohol ester. Furthermore, when it has a carboxyl group at both ends, an alkali metal hydroxide,
Neutralization with alkanolamines or alkylamines yields carboxylic acid salts. Ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, etc. (hereinafter referred to as specified glycols) used to obtain the compound of the present invention have an average molecular weight of approximately 1500 or less, and these and phthalic acid or terephthalate are used. The reaction molar ratio with the acid (hereinafter referred to as the predetermined acid) is in the range of 2:1 to 11:10 in general formula (1), and in general formula (2)
For compounds of general formula (1), the average molecular weight is in the range of 1:2 to 10:11, but from the viewpoint of obtaining a uniformly fast dyed product with a high fixation rate in the present invention, the average molecular weight of the compound of general formula (1) is 200 to 400. In the case of the compound of general formula (2), the average molecular weight is particularly preferably in the range of 200 to 600. The reaction molar ratio varies depending on the molecular weight of the predetermined glycol, but for general formula (1), the predetermined glycol: predetermined acid 4:3 to 7:6, and for general formula (2), the predetermined glycol: predetermined acid. A range of 3:4 to 6:7 acids is generally preferred. For a given glycol, propylene-based glycols cause more scratches than ethylene-based glycols, but the adhesion rate is generally higher. Furthermore, when comparing the differences between the compounds of general formulas (1) and (2), it is found that (2) generally has better coloring properties. If the specified compound of the present invention is difficult to dissolve in water, use a solvent or
Adjust by adding emulsifiers or solubilizers, etc. In the present invention, ester-based synthetic fibers refer to fibers that have at least 20% of ester bonds in their molecules, and blended and interwoven products that have at least 20% of these fibers, such as cotton, yarn, tow, top, skein, and knitted fabrics. It also includes fibers containing 20% or more of diacetate or triacetate fibers made of cellulose acetate with an oxidation degree of 45% or more. Disperse dyes refer to nonionic dyes that are insoluble in water and do not show anionic or cationic properties in water, and are commercially available in a form that is mixed with a dispersant or solubilizer and appears to be dispersed or dissolved in water. As a non-ionic dye, the dye itself does not show ionicity even if it is
Examples include azo dyes, quinone dyes, methine dyes, azomethine dyes, triphenylmethane dyes, and azine dyes. In the dyeing method of the present invention, the compound of the present invention may be added to a system containing a disperse dye, or the disperse dye may be applied after pretreatment with a treatment liquid containing the compound of the present invention. Here, a dye-containing system is a colored paste pad that contains, in addition to dyes, thickeners, color formers, PH adjusters, reduction inhibitors, dye solubilizers, emulsifiers, penetrants, antifoaming agents, metal sequestering agents, etc. Refers to bath coating liquid, spray liquid, etc. The viscosity of these color pastes, pad baths, etc. is determined by the type and amount of thickener added depending on the form of the fiber to be dyed and the type of dye. Common thickeners include locust bean gum,
A 5 to 50% aqueous solution of guava gum based, shiratsu gum based, ether modified starch based, CMC based and sodium alginate based glue, synthetic glue such as maleic acid-vinyl acetate copolymer based glue, mineral oil emulsion glue, etc. It is prepared as a base paste and used alone or in combination in a color paste or pad bath at 0 to 80% by weight. In the dyeing method of the present invention, methods for attaching the dye-containing system to the ester-based fiber material include printing, batting, dipping, coating, and spraying. It is necessary to follow the guidelines. In the dyeing method of the present invention, fixation and color development are carried out by steaming for 2 to 10 minutes with normal pressure superheated steam at 160 to 180°C, or by steaming for 2 to 10 minutes with hot air at 180 to 220°C.
The typical method is the thermosol dry heat method for ~200 seconds, but the relative humidity is 0~100%RH temperature 70~220℃
Any processing method within this range is possible. In the dyeing method of the present invention, the compounds of general formulas (1) and (2) are contained in an amount of 1 to 5% by weight based on the color paste, 1 to 10% by weight in a pad bath, and 1% by weight in a spray solution and a coating solution. It is used in the range of ~10% by weight, and even if it is used more than this, it is difficult to expect any associated effects. EXAMPLES It will be explained in detail in Examples that according to the dyeing method of the present invention, a uniform and fast dyed product with good dyeing enhancement can be obtained. Example A colored paste with the following composition was prepared using the products of the present invention represented by general formulas (1) and (2), and printed, dried, and heat treated under the following conditions to obtain the dyeing enhancement effect and dye aggregation. The products of the present invention were observed in terms of color, pattern sharpness, level dyeing, permeability, etc. (Tested auxiliary agents are shown in Table 1) A. Printing of ester-based fiber materials (1) Textile material: 100% polyester processing (Amundsen) (2) Original glue: 10% aqueous solution of a mixture of equal amounts of royal bean gum based glue and starch based glue (3) Dye: CI Disperse Blue 13 (4) Color glue: Original glue 600 parts Dye 50〃 Tartaric acid 4〃 Sodium chlorate 4〃 Test aid 40〃Water 302〃Total 1000 (parts) (5) Printing: Flat screen printing machine (6) Drying: 120℃×3min ( 7) Fixation: HTS method 170℃×8min Thermosol method 200℃×30ses (8) Reduction cleaning: Hydrosulfite conc 1g/Soda ash 1g/Neoscore PRA-bc (manufactured by Toho Chemical) 0.5g/
Processed for 20 minutes at a bath ratio of 1:40 and a temperature of 70°C. B Measurement method (1) Dyeing enhancement degree: Calculate the K/S value from the reflectance of the sample fabric that has been printed, dried, and heat treated, and set the value when no auxiliary is used as 100, and the value when it is used for dyeing. It was defined as the degree of improvement in arrival. (2) Cohesiveness of dye: Five days after preparing the colored paste, the cohesiveness of the dye was observed under a microscope with a magnification of 70 times, and the results were evaluated using a five-point evaluation method. ◎: Very good 〇: Good △: Fairly bad ×: Fairly bad ××: Extremely poor (3) Sharpness and permeability of the pattern: The tearing of the thin lines of the pattern and the degree of dye arrival on the back side are determined according to item (2) above. Evaluation was made using the same five-step method. (4) Scratching: After printing, dry rubbing (50 times) of the dried fabric was measured using a Gakushin type rubbing fastness tester, and the results were evaluated using the same five-step method as in item (2) above. (5) Level dyeing property: The condition of specks printed using a 2-fold water dilution of the color paste and the density spots were observed, and the results were evaluated using the same 5-step method as in item (2) above. (6) Fastness: The abrasion fastness of the dyed product was measured using a Gakushin model abrasion fastness tester in accordance with JIS2-0849, and the results were evaluated using the five-step method in the same manner as in item (2) above. C Measurement results: Shown in Table 2.

【table】

[Table] From the results of the above examples, the dyeing aid of the present invention has an extremely excellent dyeing enhancement degree, and also has excellent dye aggregation properties, pattern sharpening properties and permeability, scratch stains, level dyeing properties, fastness properties, etc. It can be seen that the results are extremely good.

Claims (1)

[Claims] 1. When dyeing ester-based synthetic fibers, the following general formulas (1) and (2) (However, R is H or CH ₃ group, M is H or Na, K, 1 is an integer of 1 to 30, m and n are 2 to 10
indicates an integer. ) A method for dyeing ester-based synthetic fibers, which comprises adhering a disperse dye to the fiber in the presence of at least one compound represented by the following formula, and then fixing it by heat treatment.