JPS60155785A - Continuous dyeing of cellulose/polyamide blended spun fabric - 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 The present invention relates to a continuous dyeing method for cellulose/polyamide blend fabrics, a pad dye liquor used for carrying out the method, and textile materials dyed by this method.

Cellulose/polyamide blend fabrics are generally dyed using a two-bath method. For example, in the first stage, the cotton part is dyed by the Pad-3team method, followed by the polyamide part by the exhaust method, or vice versa [Duffreu Bernard, Praxis Desserts].・
``Brygens Land Verbens Fono Textilien'' (W, Bernard.

Praxis des Bleichens und
Farbens von Textilien) + Springer (Sprtnger) published in 1966,
From page 368].

It can be seen that this method is time-consuming and labor-intensive when dyeing long objects.

On the other hand, efficient Thermo True Pad-Steam (Thermo True Pad-Steam) is used for continuous dyeing of polyester/cotton blend fabrics.
sol −' Pad − Steam ) method has been successful. Next, the textile material is first impregnated with a pad dye liquor. This dye liquor previously contains a combination of polyester and cotton dyes. However, if a cotton/polyamide blend fabric is dyed in this manner and the fabric is padded with a dye bath containing a dye suitable for the substrate, well-dyed cellulose fibers are obtained. However, this polyamide part is only superficially dyed. Rather-
It is better to say that the dye does not diffuse into the fiber under these conditions.

An object of the present invention is to provide a dyeing method for cellulose/polyamide blend fabrics that enables continuous one-bath dyeing of two types of fibers in one step.

It has been discovered that polyamide parts in cellulose/polyamide blend fabrics can also be dyed satisfactorily by the ThermoTrue pad-steam process if special nonionic surfactants or mixtures thereof are added to the pad dye liquor.

The subject of the invention is that, in addition to at least vat dyes and at least metal complex dyes and, if necessary, other additives, non-ionic surfactants or non-ionic surfactants are also present. This is a continuous dyeing method for cellulose/polyamide blend fabrics by a thermotrue pad-steam method characterized by using a pad dye solution containing a mixture.

The nonionic surfactant is preferably an alkyl phenol fatty alcohol of ethylene oxide,
Included are fatty amines or ethylene oxide addition products with fatty acids (ethoxylates); and polyethylene glycols. The molecular weight of the ethylene oxide adduct is 500 to 10,000, and the molecular weight of polyethylene glycol is 200 to 6,000.

As ethylene oxide addition products, mention may be made in particular of the following: a) saturated and/or unsaturated fatty alcohols with 10-20 carbon atoms; reaction product with 5-40 mol of ethylene oxide per mole of ethylene oxide; b) an alkylphenol having 4-12 carbon atoms in the alkyl group and 5-40 mol, preferably 5-15 mol per mole of this alkylphenol; C) reaction product of a saturated and/or unsaturated fatty amine having 14-25 carbon atoms with 10-40 mol of ethylene oxide per mole of fatty amine; d) carbon Reaction products of saturated and/or unsaturated fatty acids having 14-20 atoms and 5-40 mol of ethylene oxide per mole of fatty acid.

Among these ethylene oxide addition products, those listed in a) are preferred, and among them, those with a molecular weight of 800-1
,500 is good.

Mixtures of the ethylene oxide adducts according to a), b) l (ri and d) with each other can also be used. These mixtures can be obtained by mixing the individual adduct products or by directly ethoxylating a mixture of the compounds on which the adduct products are based. Mixtures of ethylene oxide addition products within a group are of course also included in said mixtures, as, for example, such mixtures are obtained by ethoxylation of mixtures of fatty alcohols of different chain lengths.

a) Nodame saturated and/or unsaturated fatty alcohols include dodecanol, palmityl alcohol, stearyl alcohol, oleyl alcohol or tallow fatty alcohols, preferably mixtures of C1□ to CIQ-fatty alcohols.

Alkylphenols for b) include butylphenol, hexylphenol, especially isooctylphenol, Ptert-octylphenol, nonylphenol and dodecylphenol. - Fatty amines for C) include, for example, stearylamine, palmitylamine and oleylamine, as well as
Particular mention may be made of mixtures of CIQ to C2□ fatty acids.

d) Nodame saturated and/or unsaturated fatty acids include, for example, palmitic acid, inter alia stearic acid and oleic acid.

The polyethylene glycol preferably has a low molecular weight, for example, one having a molecular weight of 300 to 500.

The non-ionic surfactant preferably has a 2-
It is added in an amount of about 50 f/l, especially about 5-20 f/l.

As vat dyes for dyeing cellulosic fiber components, mention may be made, for example, of vat-dyable polycyclic quinones of the following compound classes: perylenetetracarboxylic acid imides, in particular phenyl imide A@, Anthrapyrimidines, anthrapyridones, isothiazole anthrones, quinazoline anthraquinones, oxazole anthraquinones, thiazole anthraquinones, oxycyazole anthraquinones,
Dipyrazole anthronils, pyrazinoanthraquinones, azabenzanthrones, indanthrones, thioxanthrone anthraquinones, anthraquinone acridones, dihydroacridines, anthanthrones,
The pyranthrones, fradiathrones, anthanthrones, and especially the anthrimides, anthrimidocarbazoles, phthaloylacridines, and anthraquinones themselves have a pure 9,10-dioxoanthracene ring. It includes not only derivatives having a thiophanethrone group, but also anthraquinonated metal products having a 9,10-dioxoanthracene ring.

All such multilayer compounds may have substituents commonly used in vat dyes, such as, for example: halogen atoms, especially chlorine; Fluorine or oxaline, alkyl, alkoxy, aryl, aryloxy, aralkyl, aralkoxy, carbalkoxy, arylamino,
Alkylmercapto, arylmercapto, cyano and thiocyano groups. By alkyl we especially mean radicals having 1 to 4 carbon atoms, by aryl we especially mean the radicals phenyl, tolyl, chlorophenyl, methoxyphenyl or naphthyl, by aralkyl we mean in particular the radicals phenyl, tolyl, chlorophenyl, methoxyphenyl or naphthyl. Particularly intended is the benzyl group. Particularly important substituents are furthermore acyl and acylamino groups.

Metal complex dyes with which the polyamide parts are dyed include, for example, 1:1 or 1:2 gold paulownia complexes of azo or azomethine dyes, or metallated phthalocyanines, such as copper or nickel phthalocyanines. The 1:1 and 1:2 metal complex salts are preferably 1:1-nickel complex salts, 1:1-nickel complex salts, 1:1-nickel complex salts, 1:1-nickel complex salts,
:1-cobalt complex salt, 1:1-copper complex salt, 1:1-chromium complex salt, 1:1-iron complex salt, or symmetrical or asymmetrical 1:2-
Cobalt complexes, 1:2-iron complexes, or 1:2-chromium complexes, which can be used as chromophoric ligands, for example, benzene-azo-benzene-, naphthalene-azo-naphthalene-, benzene-azo-naphthalene- , benzene-azo-pyrazolone-, benzene-azo-pyridone-1 or benzene-azo-acetoacetamide-type O-carboxy〇'-hydroxy-10-hydroxy-0'-amino, or 0,0'-dihydroxy Contains an azo dye,
These dyes can be substituted or unsubstituted. Examples of this substituent include dicarboxyl groups, sulfo groups, substituted or unsubstituted sulfonic acid amides, or alkyl sulfones, halogen atoms, or nitro groups, acetyl groups, or acetamido groups; basis,
For example, methyl, ethyl or propyl groups.

Azo dyes can be mono-, di- or polyazo dyes. In addition to azo dyes, colorless ligands such as bidentate hydroxyquinoline derivatives can also be used in the asymmetric 1:2-metal complex dyes.

In the method of the present invention, 1:2 metal complex dyes are preferably used.

As other additives, the pad dye liquor can in particular also contain anti-migration agents, such as hypophosphite-acrylic acid telomers or those based on polyacrylates, which are effective in the widthwise and To effectively prevent different color tones between the front and back sides. Further additives include buffers such as ammonium sulfate, sodium hydrogen phosphate or sodium dihydrogen phosphate, acids such as acetic acid, or light stabilizers.

The dyeing method of the invention is carried out as follows: a cellulose/polyamide blend fabric, for example a 1=1 mixture of cotton and polyamide, especially polyamide 6.6.5, is impregnated with a dye pad dye liquor. . This dye liquor contains approximately 50 t/l of dye, approximately 10' f/l, depending on the intensity of the shade desired.
fatty alcohol ethoxylates 1. And for Kari,
Contains about st, it anti-migration agent.

Next, this fabric is ground to a dye liquor pick-up of approximately 60%, and is subjected to intermediate drying.

This intermediate drying is performed, for example, with dry air at 100-130°C. Next, the metal complex dye is fixed to the polyamide portion by a thermosetting method. Here, this fabric is 30-1
Dry heat at 190.-230°C for 20 seconds. this is,
For example, it is carried out with the aid of a tension frame or in a Thermo-Hotflue, with or without width control. Other possibilities include fixed cylinders (using oil-heated drying cylinders arranged next to each other or one on top of the other), or the use of cylindrical sieve dryers.

The vat dye continues to stick. To do this, the fabric is first passed through a chemical bath. Here, vat dyes are converted to their water-soluble leuco form by hydrosulfides in the presence of alkali. The fabric is then placed in an air-free steamer;
The rice is steamed at 100°C (saturated steam) for about 1 minute. After leaving the steamer, the fabric is placed in a washing machine, where it oxidizes.

A soap wash is carried out and the dyeing is completed.

The dyeings produced by the method of the invention on cellulose/polyamide blends with the combination of vat dyes/metal complex dyes in the presence of specific surfactants show outstanding general resistance, especially It stands out for its very good light, weather and moisture resistance.

Furthermore, and in particular, the method of the invention is also suitable for dyeing long lengths. This saves time, saves money and even saves energy compared to the prior art mentioned at the beginning, while achieving excellent color matching. Furthermore, it is surprising that the dyeing of the polyamide parts is not adversely affected by the subsequent development of the vat dyes on the cotton fibres. Polyamide fiber components dyed with metal complex dyes are virtually unaffected by treatment with reducing agents. Practical Hi, dye does not deteriorate, 1
There is no change in color.

The following examples serve to illustrate the invention. The amount of dye is for the commercially available product, ie, diluted.

Example 1 A blended fabric consisting of 50% polyamide 6.6 and 50% cotton was dyed in a continuous machine by the ThermoTrue pad-steam method.

The pad dye liquor contains the following dyes and auxiliaries, the amounts of which are per 1 stand of dye liquor: 5rC,1, Hat Orange 11C,I.

70805° 5,! M C, 1, Bat Green C, I.

69510° 23fC, 1, Hut Black 25 C, I.

69525° 3g C, 1, acid yellow 220 C3I.

11714゜Furthermore, 2′? The dye of the formula ■ o2 NO□ l, as well as the dye of the formula R-0-(CH'2CH20)n
T ([R=C++ alkyl, average value of n=18]]
8 (molecular weight ~1050) fatty alcohol ethoxylate, 57 2-acrylamide as potassium salt
2-methylpropanesulfonic acid polymer (anti-migration agent),
and 2f sodium dihydrogen phosphate.

Add acetic acid to adjust the pH of the pad dye solution to 5.5 with N14.
m. This textile material was impregnated with a pad dye liquor of the above composition (dye liquor absorption rate 60%), and then intermediately dried (110'
Hotflue at -130℃
, and then thermovine treatment for 1 minute at 210-22
Carry out in a thermo-hot flue at 0°C. The fabric is then passed through a pad steam system, which fixes the vat dye. This item is first placed in a chemical dye solution. This washing liquid contains the necessary amount of alkali to reduce the vat pigment,
For example, it contains caustic soda solution and hydrosulfide. Next, this item should be placed in an airless steamer.
Enter the container and undergo steam treatment at 100°C (saturated steam) for 1 minute. After leaving the steamer, the textile material passes through separate sections of a wide-width washer, where the dyeing is completed by washing, oxidizing and soaping. A textile material is thus obtained which is uniformly dyed in olive color and has good weatherability, lightfastness and outstanding moisture resistance.

Example 2-6 Instead of fatty alcohol ethoxylate, use the same amount (10
When the same operation as in Example 1 is carried out using a pad bath containing the following nonionic surfactant (F/liter of pad bath),
Similarly, a textile material is obtained which is uniformly dyed in olive color and has excellent weather resistance, light resistance, and moisture resistance.

Examples Nonionic surfactants 2 Reaction product of N-stearyl-N',N''-bis(phenylhydroxyethyl)-diethylenetriamine with 106 moles of ethylene oxide (30% aqueous solution) 3 C20/C22-fatty amines Reaction product of 34.5 moles of ethylene oxide (33% aqueous solution) Reaction product of 4p-tert-octylphenol and 8.2 moles of ethylene oxide 5 Reaction product of stearyl alcohol and 36 moles of ethylene oxide 1 thing

Claims (1)

[Claims] 1. At least a vat dye and at least a metal complex dye,
and a thermotrue pad-steam characterized in that a pad dye liquor containing a nonionic surfactant or a mixture of nonionic surfactants is used in addition to other additives added as necessary. Continuous dyeing method of cellulose/polyamide blend fabric by method. 2. As a nonionic surfactant, molecular weight 500-1
0,000 alkylphenol-1 fatty alcohol-
2. A method according to claim 1, characterized in that a fatty acid or fatty amine ethoxylate or a polyethylene glycol having a molecular weight of 200-6.0,00 is used. 3. Molecular weight 800-1 as a nonionic surfactant,
3. Process according to claim 2, characterized in that 500 fatty alcohol ethoxylates are used. 4. Non-ionic surfactant is added to the pad dye solution at a concentration of 2-50%.
Process according to claim 1, characterized in that it is added in an amount of 9 f/l, in particular 5-20 f/l. 5. Claims characterized in that anthrimides, anthrimide carbazoles, anthraquinones, and/or phthaloyl acridines are used as the vat dye, and a 1:2 metal complex dye is used as the metal complex dye. Method of Section 1. 6. The method according to claim 1, characterized in that, as further additives, anti-migration agents, buffer substances, acids and/or light stabilizers are used. 7. One or more vat dyes, one or more metal complex dyes, nonionic surfactants or nonionic surfactant mixtures 1
and, if necessary, other additives. 8. The pad dye liquor according to claim 7, which contains an anti-migration agent as another additive. 9. A cellulose/polyamide blend fabric dyed by the method of claim 1.