JPS5938356B2 - Dyeing method for ester fiber materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dyeing ester fiber materials with disperse dyes, specifically a steaming method using normal pressure superheated steam (hereinafter referred to as H
The present invention relates to a method for dyeing ester-based fiber materials, which has a high dyeing rate even in continuous dyeing such as the dry heat thermosol method (referred to as T method), and can obtain uniform and durable dyed products.

Conventionally, fatty acid esters of polyalkylene glycol, holoxyethylene alkylphenyl ethers, polyoxyethylene alkyl ethers, etc. have been known as dye fixing enhancers for increasing the fixation rate in continuous dyeing methods such as the HT method and the dry heat thermosol method. There is.

However, these have advantages and disadvantages, such as aggregation of the dye, formation of specks on dyed products, poor dye enhancement, and poor sharpness.

The inventors of the present invention have made extensive studies to overcome these drawbacks, and have found that even in continuous dyeing using the HT method or dry heat thermosol method, a fixation rate equivalent to or higher than that in conventional batch dyeing methods can be obtained. At the same time, he invented a dyeing method that produces durable and uniform dyed products.

That is, in the present invention, when dyeing ester-based fiber materials, the general formula (where R is an alkyl group or alkenyl group having 8 to 22 carbon atoms, l, m, and n are 0 or any integer, and l+m+n
represents an integer from 2 to 50.

) in the presence of a compound represented by (hereinafter referred to as a predetermined compound) a disperse dye on the fiber material, followed by heat treatment to fix and develop the color.

According to the dyeing method of the present invention, the dyeing of ester fibers is enhanced, there is no dye aggregation, and fast and uniform dyeing can be achieved.

In particular, when dyeing ester fibers with a black disperse dye that tends to cause aggregation, no aggregation of the dye is observed.

The predetermined compound used in the present invention can be obtained by a known manufacturing method in which ethylene oxide is added to glycerin and then esterified with a fatty acid having 8 to 22 carbon atoms.

The total number of moles added of ethylene oxide can be applied in a wide range from 2 to 50 moles, but it is influenced by the type of fatty acid used and the degree of esterification, and is 0.3 < S/hole < 0.5.
(However, S is the saponification value of the predetermined compound, and A is the acid value of the fatty acid used.) A range that satisfies the following is particularly preferable.

Examples of fatty acids used for esterification include caprylic acid,
Capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, 12-hydroxystearic acid, oleic acid, linoleic acid, lysyllic acid, synthetic fatty acids, etc., but fatty acids having 16 to 18 carbon atoms are preferred for the purpose of the present invention. .

If a given compound used in the present invention is difficult to dissolve in water, it may be adjusted by adding a solvent or solubilizer, taking care not to impede dyeability.

In the present invention, ester-based fiber materials include fibers having at least 20% of ester bonds in the molecule, and blended and interwoven products containing at least 20% of these fibers, such as cotton, yarn, tow, top, and knitted fabrics. Including all things composed of fibrous substances such as textiles, and furthermore, an acetylation degree of 45%.
It also includes fibers containing 20% or more of diacetate or triacetate fibers made of cellulose acetate.

In addition, disperse dyes refer to nonionic dyes that are insoluble in water and do not exhibit anionic or cationic properties in water, and are mixed with dispersants or solubilizers so that they appear to be dispersed or dissolved in water. It is a general term for nonionic dyes in which the dyes themselves do not have ionicity even if they are commercially available in the form of dyes, including azu-based, quinone-based, methine-based, azomethine-based, triazine-based, triphenylmethane-based, azine-based, etc.

In the dye strength method of the present invention, a predetermined compound is added to a system containing a disperse dye, but a method in which the disperse dye is attached after pretreatment with a treatment liquid containing a predetermined compound may also be used.

Here, systems containing dyes include dyes, thickeners, color formers,
It refers to color pastes, pad baths, coating liquids, spray liquids, etc. that contain pH adjusters, reduction inhibitors, dye solubilizers, emulsifiers, penetrants, antifoaming agents, metal sequestering agents, etc.

The type and amount of thickener added to these color pastes, pad baths, etc. is determined depending on the form of the fibers to be dyed and the type of dye, and the viscosity thereof is determined.

Usually, the thickeners are locust bean gum type, guwa bean gum type, shiratsu gum type, ether modified starch type, C
0M, C type, sodium alginate type glue, maleic acid-
A 5 to 50% by weight aqueous solution of synthetic glue such as vinyl acetate copolymer and mineral oil emulsion glue is prepared as a base glue, and 0 to 80% by weight is used alone or mixed in a color paste or pad bath. used.

In the dyeing method of the present invention, there are methods such as printing, padding, dipping, coating, and spraying to attach the dye-containing system to the ester-based fiber material. It is necessary to do it according to the purpose.

In the dyeing method of the present invention, the method of fixing and coloring is 16
2~ with normal pressure superheated steam at 0~180℃; 20~2 with steaming for 10 minutes and hot air at 180~220℃
A typical method is a thermosol dry heat method for 00 seconds, but any heat treatment method within a relative humidity range of 0 to 100% R,H and a temperature of 70 to 220°C is possible.

In the dyeing method of the present invention, the predetermined compound is used in the range of 1 to 5% by weight for the color paste, 1 to 10% by weight for the pad bath, and 1 to 10% by weight for the spray liquid and coating liquid. , even if it is used more than necessary, it is difficult to expect any effects.

- The fact that the dyeing method of the present invention provides a uniform and fast dyed product with good dyeing enhancement will be explained in more detail with reference to Examples.

In addition, in Examples (including synthetic examples), both the middle part and % indicate parts by weight and % by weight.

Synthesis Example 1 1.2 parts of flaked caustic potassium was added to 368 parts of synthetic glycerin, and the mixture was heated at a temperature of 16% under a nitrogen atmosphere of 2 to 5 kg/cut.
800 parts of ethylene oxide was reacted at 0 to 180°C to obtain 1168 parts of an ethylene oxide adduct of glycerin as a colorless and transparent oil.

Next, the ethylene oxide adduct of glycerin 292
3 parts of paratoluenesulfonic acid and 282 parts of oleic acid
After adding parts and reacting at a temperature of 160°C to 180°C,
Neutralization with triethanolyleamine gave 556 parts of the desired compound in the form of a yellowish brown oil with an acid value of 0.8.

This product had S/A=0.482 and was dispersed in water.

Synthesis Examples 2 to 6 In the same manner as in Synthesis Example 1, the raw materials were reacted in the amounts and molar ratios shown in Table 1 to obtain predetermined compounds.

Examples Color pastes with the following compositions were prepared using the specified compounds obtained in each synthesis example, and printed, dried and heat treated under the following conditions to determine the dyeing enhancement effect, dye cohesiveness, and pattern. The sharpness, level dyeing, permeability, and scratch stains were observed.

A. Printing of ester fiber material (1) Fiber material; 100% polyester processed yarn fabric (suede).

(2) Original glue: 10% aqueous solution of an equal compound of roasted bean gum based glue and starch based glue.

(4) One-color glue recipe: (Part) Original glue
600 Dye 50 Tartaric acid 4 Sodium chlorate 4 Predetermined compound 40 (6) Drying: 120°C x 3 minutes (7) Fixation: HT method 170°C x 8 minutes Thermosol method 200°C x 30 seconds (8) Reduction cleaning: Hydrosulfide・Conch 1g/
l, Soda Ash 19/13 and Neoscore PRA-6C
(Toho Chemical) 0. ! Using a solution consisting of l/l, the bath ratio is 1.
:40, treated for 20 minutes at a temperature of 70°C.

: Measurement method (1) Dyeing enhancement dust: The /S value was determined from the reflectance, and the value when no dyeing enhancer was used was taken as 100, and the value when it was used was taken as the degree of dyeing enhancement.

(2) Dye cohesiveness: Five days after the colored paste was prepared, the dye cohesiveness was observed under a 70x microscope and evaluated on a five-point scale.

◎ ; Extremely good (no additives) ○ ; Good △ ; 5 Bad
According to the degree of arrival of the dye to the back surface, evaluation was made in 5 grades as in the above item (2) "Dye cohesiveness".

(4) Scratch stains: After printing, after drying the cloth, dry rubbing (50 times) was measured using a Gakushin type friction fastness tester, and the above (
Evaluation was made on a 5-level scale in the same way as in section 2) "Aggregating property of dye".

(5) Level dyeing property: Judging from the condition of 5 specs of printing using a 2-fold water dilution of dark and light spots and colored paste,
Evaluation was made on a five-point scale in the same manner as in "Aggregation of Dye".

(6) Fastness: The abrasion fastness of the dyed product was measured using a Gakushin model abrasion fastness tester according to JIS 2-0849, and evaluated in 5 stages as in the above item (2) "Dye cohesiveness". did.

C measurement results The measured results are shown in Table 2.

Claims (1)

[Claims] 1. When dyeing ester fiber materials, the general formula (however,
R is an alkyl group or alkenyl group having 8 to 22 carbon atoms, l
, m and n are O or any integer, and I+m+n is 2 to 5
Indicates an integer of 0. ) A method for dyeing an ester-based fiber material, which comprises adhering a disperse dye to the fiber material in the presence of a compound represented by (a) and then heat-treating the fiber material.