JPS591828B2 - Dyeing and printing method for polyester fibers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for dyeing and printing polyester fibers.

BACKGROUND OF THE INVENTION It is known that polyester fibers are often dyed with dyes that are poorly soluble in water, particularly disperse dyes.

Conventionally, when dyeing polyester fibers by a pad-thermal fixation method, such as a pad steam method or a thermosol method,
With the exception of methods in which the dyeing solution is steam-fixed using high-pressure saturated steam after being padded, dyed products with a light to medium color density can only be obtained, which has been a problem.

Particularly in textile printing, the problem of insufficient build-up of dyes as described above is even more pronounced, and dyes have hardly ever been put to practical use.

Therefore, especially in the case of printing polyester fibers, a printing liquid consisting of a water-soluble sizing agent, a disperse dye, and other chemicals is printed on the fabric, and after drying, it is heated under high pressure above atmospheric pressure to 110 to 13
Dye fixation was performed by steaming for 20 to 30 minutes using high-pressure saturated steam at 0°C.

However, such batch-type high-pressure steaming takes time to prepare and process, is complicated to operate, and has many incidental losses such as undercrossing, making it extremely uneconomical and inefficient.

Several continuous steaming methods using high-pressure saturated steam have been proposed as a measure to solve this problem of uneconomical and inefficient methods, but there are still many mechanical technical problems such as high-pressure sealing. There is still room for research, but it has not yet been put into practical use.

For this reason, in recent years, continuous dye fixing methods using normal pressure superheated steam or drying have been trending as possible continuous fixing methods, but as mentioned above, these dye fixing methods using normal pressure superheated steam or thermosol Generally, build-up properties are significantly inferior to fixation using high-pressure saturated steam.

*The inventor has developed a polyester fiber pad as described above - dyed or printed by heat fixation.
The dyeing and printing method of the present invention was arrived at as a result of extensive research aimed at developing a method that would provide a high degree of dye build-up for printing using thermosetting.

OBJECTS OF THE INVENTION One object of the present invention is to provide a method for dyeing and printing polyester fibers that can obtain sufficient dye build-up and produce uniform and fast dyed products ranging from light colors to deep colors. Another object of the present invention is to
An object of the present invention is to provide an economical and extremely efficient method for dyeing and printing polyester fibers by continuous dye fixation.

Arrangements of the Invention These and other objects of the invention can be achieved by the method of the invention.

That is, the present invention provides a method for dyeing and printing polyester fibers using a disperse dye, and this method comprises dyeing polyester fibers with the following formula I: [in the above formula, C, D, E and F each represent a hydrogen atom or an acyl group derived from a carboxylic acid having 8 to 22 carbon atoms, and R
1 represents a methyl group, R2 represents a hydrogen atom, h,
i, j and k are integers from O to 100, d, e, f
and g each represent an integer of 1 to 100, and n represents 2.

However, C, D. E and F cannot both be hydrogen atoms, and when two or more of C, D, E, and F are acyl groups derived from carboxylic acid, these acyl groups are the same as each other. and d, e, f, g, h
, i, j, and k may be the same or different, but it is assumed that h, i, j, and k are never all 0.

It is characterized in that it is treated with a dyeing solution or a printing solution containing at least one of the following compounds and heated.

Specific description of the constitution of the invention The polyester fibers useful in the present invention are fibers obtained from polyesters such as polyethylene terephthalate and modified polyester fibers thereof, and these fibers are filamentous,
It may be in any shape such as a knitted fabric or a woven fabric.

It may also be a blended or interwoven product with other fibers, including polyester fibers.

Dyes useful in this invention are disperse dyes.

Representative examples of such dyes include azo, azomethine, nitro, and anthraquinone dyes.

The "staining solution" used here is an aqueous solution containing, in addition to the above-mentioned disperse dye, a migration inhibitor such as sodium alginate, a pH adjuster, and other auxiliary agents if necessary.

This dye solution is applied to polyester fibers, for example, by the usual pad method.

A "printing liquid" is an aqueous viscous liquid containing, in addition to the disperse dye, a so-called base paste consisting of, for example, an aqueous size solution, a pH adjuster and, if necessary, other auxiliaries.

The viscosity of this liquid varies depending on the fiber material used, printing method, etc.

Examples of the sizing agent contained in the original glue include locust bean gum-based and guana gum-based sizing agents such as Maypro Gum NP (Maypro) and Shokyung 301 Extra (Grinara), and ethers such as Sorbitose C-5 (Skolten). Modified starch-based sizing agents, Shiratsu gum-based sizing agents such as Lame Gum (Grinara Co., Ltd.), Fine Gum (Daiichi Kogyo Co., Ltd.) C, M, C, and Manutex FX (A,
1. There are sodium alginate adhesives such as those manufactured by Company L.

These glues are usually used as an aqueous solution containing 3 to 50% of at least one of them.

Other base glues include, for example, emulsion type base glues made by emulsifying mineral oil such as mineral turpentine and water using a suitable emulsifier such as Difazol EV (Shiba Geigy), and the above-mentioned water-soluble glues. There is a semi-emulsion-type base glue obtained by mixing the base glue and the emulsion-type base paste.

These original pastes are used in an amount of 20 to 80% of the total amount of the printing solution, and the viscosity of the printing solution is adjusted accordingly.

Various agents are used as auxiliary agents in the printing solution depending on the purpose.

Typical examples include pH adjusters such as tartaric acid, acetic acid, and ammonium sulfate, and reduction inhibitors such as sodium m-nitrobenzenesulfonate and chloride. A dye or the like may also be used.

The above-mentioned printing liquid can be used in normal printing methods such as roll printing, screen printing, rotary screen printing,
It may also be applied to polyester fibers.

The compound of formula (1) according to the present invention is an ester of a polyoxyalkylene glycol addition compound (tetronic) of alkylene diamine with a glycol and an aliphatic carboxylic acid.

Tetronics include, for example, those obtained by adding propylene oxide to ethylenediamine, and those obtained by further adding ethylene oxide.

Carboxylic acids that react with these glycols include saturated or unsaturated hydroxy fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, steaming acid, oleic acid, wasillic acid, and behenic acid. be.

The reaction between these carboxylic acids and glycols is a normal esterification reaction, such as a dehydration reaction between an acid and an alcohol,
The reaction may be carried out by a method commonly used in the reaction of an acid anhydride and an alcohol, or the reaction of an acid halogenide and an alcohol, whereby the desired esters can be obtained.

Esters of such polyoxyalkylene glycols that are particularly suitable for the method of the present invention have a relatively large F molecule M and are relatively small in water solubility.

Although the theoretical mechanism of the action of these compounds is not clear, it is presumed that the disperse dye and these compounds form an adduct, and that this adduct contributes to the enhancement of dye dyeing.

The compound of formula (1) according to the present invention is suitably added in an amount of 0.5 to 5.0% by weight to the dyeing solution or printing solution.

After these dyeing liquids or printing liquids are padded or printed on polyester fibers, they are dried or not dried, and heated for 20 to 30 minutes with high pressure saturated steam at 110 to 140°C.
The dye on the fiber is thermally fixed by high-pressure steaming for 30-180 seconds with hot air at 180-220°C, or steaming for 2-8 minutes with normal-pressure heated steam at 160-180°C.

The dyeing or print obtained may then be soaped and dried by conventional methods.

By the above-described operations, it is possible to dye or print polyester fibers with sufficient dye build-up properties, and to obtain a uniform and strong dyed product.

In the dyeing and printing method according to the present invention, the characteristics of the present invention are clearly exhibited in the case of thermal fixation using superheated steam steaming or dry heat thermosol, which makes it extremely economical compared to conventional methods. Moreover, efficient dyeing and printing can be realized.

The compounds of formula (1) according to the present invention may be used alone or in combination.

By adding these compounds, a stable dyeing solution or printing solution with excellent permeability can be obtained.

In particular, in the printing liquid, there is no blurring of pattern boundaries, that is, color bleeding, which often occurs in products when surfactants, etc. are added in conventional methods, and uniform and clear printed products can be obtained. It will be done.

That is, according to the method of the present invention, extremely economical and efficient dyeing or printing can be carried out, and uniform and fast dyed or printed products with excellent colors ranging from light to deep colors can be obtained.

EXAMPLES The following examples are intended to explain the features of the present invention in more detail, but are not meant to limit the invention.

Synthesis Example 1 Preparation of Tetronic Fatty Acid Ester 5000 parts of Tetronic obtained by addition reaction of 45 mol ethylene oxide to a propylene oxide adduct of ethylenediamine having an average molecular weight of 3000, 565 parts of oleic acid and p-1 as an esterification catalyst. Add 27 parts of polysulfonic acid and heat to 230 to 240 parts while stirring under a nitrogen stream.
The dehydration reaction is carried out at ℃ for 2 hours.

The amount of water removed at this time was 98.6% of the calculated value.

The obtained reaction product existed as a pale brown transparent viscous substance at room temperature, and its acid value was 0.4.

This product dissolves in water to give a white clear solution.

Synthesis Example 2 Preparation of Tetronic Fatty Acid Ester 4200 parts of Tetronic obtained by addition reaction of 27 moles of ethylene oxide to a propylene oxide adduct of ethylenediamine having an average molecular weight of 3000 was added with 400 parts of lauric acid and p- as an esterification catalyst. Add 25 parts of toluenesulfonic acid and heat to 230 to 20% while stirring under a nitrogen stream.
The dehydration reaction is carried out at 40°C for 2 hours.

The amount of dehydration at this time was 980% of the calculated value.

The obtained reaction product existed as a pale yellowish brown transparent viscous substance at room temperature, and its acid value was 0.9.

This product dissolves cloudy in water. Example 1 A suede fabric made of processed polyester yarn was impregnated with a dye solution having the composition shown in Table 1 below, nipped with a mangle to pick up 91%, dried at 100°C for 5 minutes, and then dried at 190°C for 60 seconds. Heat treated.

However, in these dyeing solutions, sodium alginate (Manutex FX, printing paste, UK Alginate Industries Limited) is contained in an amount of 1%, dye is contained in an amount of 3%, compounds of each synthesis example are contained in an amount of 1.5%, and the pH is 4.5 in acetic acid
adjusted to.

The color development rate of each dyed product obtained is expressed by the surface optical density ratio■
Shown below.

By this method, when the compound according to the present invention was used in a dye bath, a dyed product with a good dyed surface and excellent build-up was obtained.

Example 2 A suede fabric made of polyester processed yarn was printed using a test autoscreen printing machine (manufactured by Tsujii Senki Kogyo) using printing liquids A and B having the following compositions, and after drying, each was printed at 190°C for 60 seconds. A dry heat treatment or steaming using normal pressure heated steam at 170° C. for 7 minutes was performed.

Printing Solution A The obtained printed material was washed with water and then soaped under the following conditions, and the color development rate is shown in Table H in terms of surface optical density ratio.

As a result, the printed material obtained using the compound according to the present invention was clear and had excellent build-up properties.

Claims (1)

[Claims] 1. When dyeing or printing polyester fibers using a disperse dye, the polyester fibers can be dyed or printed using the following general formula (1); [In the above formula, C, D, E, and F each represent a hydrogen atom or a carbon represents an acyl group derived from a carboxylic acid of number 8 to 22, and R
1 represents a methyl group, R2 represents a hydrogen atom, h,
i, j and k are each integers from O to 100, dlelf
and g each represent an integer from 1 to ioo, and n represents 2. However, C, D, E, and F are not all hydrogen atoms, and when two or more of C, D, E, and F are acyl groups derived from carboxylic acid, these acyl groups are mutually exclusive. shall be the same as the others, and d, elf, g, h
, i, j, and k may be the same or different, but it is assumed that h, , i, j, and k are not all 0. A dyeing and printing method for polyester fibers, which comprises treating with a dyeing liquid or printing liquid containing at least one of the compounds shown in the following, and heating.