JPS6269888A - Continuous dyeing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a continuous dyeing method using reactive disperse dyes.

More specifically, the present invention relates to a continuous dyeing method using a dye composition of a reactive disperse dye using a specific nonionic surfactant and an organic acid salt.

Conventional Technology Conventionally, blended fabrics of polyester fibers and cellulose fibers (hereinafter referred to as P/C blended fabrics) have been dyed using disperse dyes for polyester fibers, reactive dyes for cellulose fibers,
It was carried out using threne dyes, sulfur dyes, etc. Problems with this include that it is very difficult to match colors because it is dyed with one type of dye, and that dyeing reproducibility is lacking.

It has now become possible to dye P/C blended fabrics with a single dye called reactive disperse dye (73rd Textile Processing Symposium Showa!9/January 2019, sponsored by the Japan Institute of Textile Science and Technology).

This solves the problem of color matching in conventional dyeing.
In addition to resolving dyeing reproducibility, we were able to dye with a variety of practical colors without limiting the dyes used.

However, dyeing properties are poor in continuous dyeing using reactive disperse dyes, and therefore there are problems in fastness and level dyeing properties.

In order to improve the above-mentioned problems, the applicant of this application has decided to solve the following problems: ! To,
He filed an application for an invention relating to a dye composition of a reactive disperse dye characterized by using a specific nonionic surfactant and an organic acid salt (Japanese Patent Application No. 11003/1989).

However, when continuous dyeing of P/C blend fabrics is carried out using the dye composition in a conventional dyeing process, the dyeability of cellulose fibers is poor, and the level dyeing of P/C blend fabrics is poor. There was a problem.

Conventional dyeing process example: Padding i dlp-t nip l! Z
') Rate 6j slow ↓ Drying 100℃ x l-〇 seconds ↓ Dry heat fixation (thermal coloring process) Yu 10℃ x 60 seconds ↓ Washing with water ↓ ↓ Drying ioo℃XI 20 seconds Problems to be solved by the present invention uses a dye composition of a reactive disperse dye characterized by the use of a specific nonionic surfactant and an organic acid salt, and further performs an alkali treatment after the thermal coloring process, resulting in a P/C blend. The purpose is to provide cloth with good level dyeing properties and high dyeability.

Means for Solving the Problems' That is, the present invention provides 30% by weight of a reactive disperse dye OJ which is insoluble or sparingly soluble in water,・[I] (in the formula,
A nonionic surfactant represented by n represents 6 to 30,! -／、? % by weight, and has the general formula [11 (wherein, R represents a hydrogen atom, an aliphatic group or aromatic group having 1 to 2 carbon atoms, X represents a hydroxyl group or an amino group, and M represents NH , represents Na or K. a is 0 to /, b
represents O-co, and C represents 0-4. ) The gist is a continuous dyeing method in which alkali treatment is immediately applied after the thermal coloring step in continuous dyeing using a dye composition whose pH is adjusted to 6.5 to 7.5 using an organic acid salt shown in It is something.

Examples of the water-insoluble or sparingly soluble reactive disperse dye used in the present invention include those represented by the following general formula [13].

(In the formula, D represents a water-insoluble dye residue, X represents an oxygen atom or -NH- group, and Y represents OR' or NR'
R', RJ, R4 and R1 represent a hydrogen atom or an alkyl group, an aryl group, or an aralkyl group which may have a substituent, or are formed by linking R4 and Hfl. represents a nitrogen-containing or 6-membered nitrogen-containing heterocycle. ) Examples of D include anthraquinone systems, azo systems, quinophthalone systems, methine systems, and heterofused ring systems.

The amount of the reactive disperse dye used in the dye composition of the present invention can be in the range of O,S to 30 weight fk%, preferably in the range of co,j to coqt amount. .

The nonionic surfactant represented by the above general formula [I] can be easily produced by, for example, an addition reaction between methanol and ethylene oxide using a known method.

Further, the number n of moles of ethylene oxide added in the general formula [I] of the present invention can be listed in the range of 6 to 30, preferably in the range of 7 to 10. Furthermore, the amount used is ko, S ~ l! A range of weight % can be mentioned, and preferably S, O to 10 weight % can be mentioned.

The organic acid salts represented by the above general formula []] are, for example, NH4, Na, and salts of the following organic acids.

Formic acid HCOOH Acetic acid CH,COO1'Ibenzoic acid
C6H,C0OH Phthalic acid C6H4(Coo)I).

Lactic acid CFI, CH(OH)COOH oxalic acid (COOfl).

Succinic acid (CH,C00H) is converted into tartaric acid HO-CfI-Coo)f ■ HO-CH-Coo)I CH,-COOH Carbamic acid H,NC00H (usually present as an ammonium salt) Also, the general formula of the present invention [ The pH adjustment in [2] is within the range of 6.S to 7.5. Preferably, t~7. − can be mentioned.

The dye composition of the present invention comprises the above reactive disperse dye and the general formula [
It can be obtained by dispersing/dissolving the nonionic surfactant of formula [I] and the organic acid salt of general formula [11] in water.

Furthermore, the dye composition of the present invention comprises the above-mentioned disperse dye, a nonionic surfactant represented by the general formula [I], and a general formula [■
] is obtained by dispersing/dissolving in water, the amount of water used is 50% by weight.
As mentioned above, the preferred range is 70 to 95 weight.

Further, the dye composition of the present invention may contain a penetrating/wetting agent, a hydrotrope agent, a migration inhibitor, etc. in an amount of not more than lj weight.

As penetrating/wetting agents, Diaserver PN-8R (manufactured by Mitsubishi Chemical Industries, Ltd., trademark), Sakushitool C8 (
Manufactured by Nippon Someka Kogyo Co., Ltd. (Trademark), Textbook) D-
21I (manufactured by NICCA CHEMICAL INDUSTRY CO., LTD., trademark) and the like.

Examples of hydrotropes include urea, dimethylurea, and toluene sulfone duster.

As a migration prevention agent, Diaserver MG
-N (manufactured by Mitsubishi Chemical Industries, Ltd., trademark), Tamano IJ
Examples include sA-Coj (manufactured by Arakawa Chemical Industry Co., Ltd., trademark), Mignon NS (manufactured by Nippon Someka Kogyo Co., Ltd., trademark), and Duck Algin NSPM (trademark, manufactured by Kibun Manufacturing Co., Ltd.).

The continuous dyeing method of the present invention uses the above-mentioned dye composition in the case of fabric in which the blend ratio of polyester fiber and cellulose fiber is 65:35 by weight.

It is characterized by a dyeing process within the dyeing process.

Dyeing process: Pad bath preparation Dye composition ↓ Padding / dip- / nip squeeze rate 6
! ↓ Drying / θθCX / -0 seconds ↓ Dry heat fixation
Examples include inorganic alkalis such as sodium carbonate, sodium bicarbonate, and sodium silicate, with sodium hydroxide and sodium silicate being preferred. The concentration of these alkaline agents used is in the range of 0.5% to 1% aqueous solution, preferably 1% aqueous solution.

Further, the following conditions for the alkali treatment are preferable.

O alkaline pad → steaming 100-110℃
O alkaline pad → baking /317~ko Joc
EXAMPLES Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to the following Examples.

The preparation of reactive disperse dyes, continuous dyeing methods, and various evaluation methods in Examples and Comparative Examples are as follows.

(1) Preparation of reactive disperse dye Reactive disperse dye lj? [Structural formula (a), (b) or P-) below] Lignosulfonate 3? (Manufactured by Wsatvaeo, trademark R@axg) Ethylene glycol S? Water 3?
Total l θθ? The mixture was ground in a sand grinder at room temperature to prepare a dye dispersion.

Red Blue Navy Blue Color (c) (2) Continuous Dyeing Method A prescribed dye composition is prepared and used as a pad bath.

This is used to continuously dye a cloth in which the blend ratio of polynisder fibers and cellulose fibers is 6S to 35% by weight. The process and conditions are as follows.

(21-a In the case of Example (dying process of the present invention) Padding / dlp / nip squeeze rate i, s
%↓ Drying ioo℃X/kooseconds↓ Dry heat fixation ko1ocx6θseconds↓ Drying tooocxtkooseconds (2) $ b
In the case of comparative example (conventional dyeing process) putting
/ dlp / nip squeezing rate l]↓ Drying too℃ /1, Diasano (-8C-CTTa2?/L ↓ tO℃XIO Water separation Washing Drying 1oocXi 0 seconds (3) Dyeability evaluation Measure the surface reflectance of the dyed cloth obtained in (1) above using a color difference meter. (manufactured by Nippon Denshoku Kogyo Co., Ltd.), and a relative value was calculated by setting the surface reflectance of the dyed cloth obtained in the comparative example as 100 (standard).

(4) Fastness evaluation (tortoise) Light resistance According to JIS standard LOza 1I2-197/1/1N
Color fading was evaluated after irradiation for 20 and 10 hours under a carbon arc using dyed fabrics of 100% density.

(b) According to Friction JIB standard LOg II Tade-971, 1Zl
Frictional contamination of too water-containing cotton cloth was evaluated using a single vibration type friction tester using dyed cloth of No.

(51 Evaluation of uniformity of dyeing /// Using a dyed fabric with N concentration, the dyeing uniformity (streak spots, etc.) was evaluated by relative comparison with the dyed fabric obtained in the comparative example.

○ Δ−−→× Excellent Level dyeing performance Poor Example 1 Dye dispersion with the following composition [(a)]! ? CI'l, 04 CH, CH, OteHS? Penetrant [Diaserver PN-8R] 0. lf migration inhibitor [Diaserver MG-N] 0. /
% urea
/? C6H5COON m aqueous solution
pH71S11! Continuous dyeing of (2)-a was performed using a dye composition consisting of 100f. As a result, it was possible to obtain a uniformly red dyed cloth with extremely high dyeability (deep color).

The results regarding dyeing properties, fastness, and leveling properties are shown in Table 1 in comparison with conventional results.

Example Dye dispersion with the following composition [(b)]! ? CH, O+CH, CH, O%Hf p Penetrant [Diaserver PN-8R]
0. lf migration inhibitor [Diaserver MG
-N]0. /% urine cumulative
l? CH1COONH, aqueous solution
pH7 adjusted water
Continuous dyeing in 12)-a above was carried out using a dye composition consisting of 100f-. As a result, it was possible to obtain a dyed cloth with extremely good dyeability (deep color) and even blue dyeing.

The results are shown in Table 1.

Example 3 Dye dispersion liquid with the following composition. CH1O
÷CH, CM, O radiance H10f Penetrant [Diaserver PN-8RI
O,/f Migration inhibitor [Diaserver M
G-N]0. IP urine accumulation
l? CH1-COONM.

HO-C-COONH, water bath solution pH 7
Adjustment CH, -COONH.

water
Remaining needle 1oo1
Continuous dyeing of the above (21-a) was carried out using the dye composition consisting of (21-a). As a result, a dark blue cloth with excellent dyeing properties and good level dyeing properties was obtained.

The results are shown in Table 1 along with comparative examples.

Comparative Example 1 When continuous dyeing of t2+-b was carried out using the dye composition used in Example 1, a red dyed cloth was obtained which was inferior in level dyeing properties, dyeability, etc. as compared to Example 1.

The results are shown in Table 1.

Comparative Example When continuous dyeing of +21-b was carried out using the dye composition used in Example C, a blue dyed fabric was obtained which was inferior in level dyeing properties, dyeability, etc. as compared to Example Co.

The results are shown in Table 1.

Comparative Example 3 When the dye composition used in Example 3 was used to carry out the continuous dyeing of +2)-b, a dark blue dyed cloth was obtained which was inferior in level dyeing properties and dyeing properties compared to Example 3.

The results are shown in Table 1.

Comparative Example: Dye dispersion with the following composition [(c)] 0? CH,
O+(HHHOH10+T?lH/0 ≦1 Penetrant [Diaserver PN-8R) 0.
lf migration inhibitor [Diaserver MG-N
] o, ty urea
l? water
Remaining needle
When continuous dyeing of +2+-m was carried out using the dye composition consisting of 1oooy, a dark blue dyed cloth was obtained which was inferior in level dyeing properties, dyeability, etc. as compared to Example 3.

The results are shown in Table 1.

Comparative example! Dye dispersion liquid with the following composition [(c)] Co01 Penetrant [Diaserver PN-sR] θ, /
p migration inhibitor [Diaserver MG-N]
θ, 11 urea
720M, -COONH4 HO-C-COONH4 aqueous solution CH2-COONH4, H7 adjusted water Remaining amount subtracted / 00f When the continuous dyeing of the above +2)-a was carried out, it was more even than in Example 3. A dark blue dyed fabric with significantly poor dyeability and dyeability was obtained.

The results are shown in Table 1.

Comparative Example 6 Dye dispersion liquid with the following composition [(c)] −〇? cH3
o+cH,cH,o+THto y Penetrant [Diaserver PN SRI O,/y-Migration inhibitor [Diaserver MG-N]0.
/7 urea
l? C)lnee C00NEI.

When continuous dyeing of +21-a was carried out using the dye composition consisting of the dye composition, a halo-dyed cloth with inferior level dyeing properties, dyeability, etc., as compared to Example 3 was obtained.

The results are shown in Table 7.

Claims (3)

[Claims] (1) Reactive disperse dye that is insoluble or poorly soluble in water 0.5~
30% by weight and general formula [I] CH_3O(CH_2CH_2O)_nH...
[I] (in the formula, n represents 6 to 30) containing 2.5 to 15% by weight of a nonionic surfactant, and
General formula [II] ▲ Numerical formulas, chemical formulas, tables, etc. are available▼・・・・・・[II] (In the formula, R represents a hydrogen atom, an aliphatic group having 1 to 6 carbon atoms, or an aromatic group, represents a hydroxyl group or an amino group, M represents NH_4, K, or Na, and a represents 0 to 1, b represents 0 to 2, and c represents 0 to 2). A continuous dyeing method using a dye composition adjusted to a dye composition having a dye composition of . (2) The continuous dyeing method according to claim 1, wherein the reactive disperse dye that is insoluble or poorly soluble in water is represented by the general formula [III]. ▲There are mathematical formulas, chemical formulas, tables, etc.▼・・・・・・[III
] (In the formula, D represents a water-insoluble dye residue, X represents an oxygen atom or -NH- group, and Y represents OR^3 or NR
^4R^5 represents R^3, R^4 and R^3 represent a hydrogen atom or an alkyl group, aryl group, or aralkyl group which may have a substituent, or R
5-membered or 6-membered by connecting ^4 and R^5
(represents a nitrogen-containing heterocycle) (3) In the continuous dyeing method according to claim 1, the alkali treatment is performed in an amount of 0.2 to 2% by weight of an inorganic alkali such as sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, or sodium silicate. A method in which colored cloth is impregnated with an aqueous solution and then heat treated.