DE1252622B - Process for coloring or printing cellulose textiles - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

D06p & * 4

German class: 8 m -1/04

Number: 1252622

File number: 113127IV c / 8 m

Filing date: April 18, 1957

Opening day: October 26, 1967

The main patent 1041 461 describes a process for dyeing and printing cellulose textiles, in which the textile fabrics in an aqueous medium with a mono- or polyazo dye are impregnated, which at least one ionogenic S solubilizing group and at least one Amino or substituted amino group containing a 1,3,5-triazine radical as nitrogen substituent carries which contains at least one halogen atom bonded to a carbon atom of the triazine ring is, whereupon the textile material of the action of an acid-binding agent in an aqueous Medium is subjected.

It has now been found that this method can be further developed in such a way that the acidic * 5 binding agents before dyeing by impregnating the fabric with a dilute aqueous Alkali solution is applied. In this way, colorations are obtained on cellulose fabrics, which have a high degree of dimensional accuracy when washing, as in an earlier procedure by the inventor, but without the need to form alkali cellulose as in known processes.

The formation of the alkali cellulose was based on as the treatment of the cellulose fabric with concentrated alkali, which lasts for a considerable period of time, preferably in alcoholic solution, whereas in the dyeing process of the inventor alkali in dilute aqueous solution is used under such conditions that, as described earlier, alkali cellulose is not formed. This is an advantage of the method of the present invention, since thus the Strength of the cellulosic material is not impaired. In addition, in the method according to the invention the use of high alkali concentrations and solvents as described earlier does not necessary; these advantages in connection with the relatively short required duration of treatment make it possible to use of an existing dyeing machine.

Thus, the present invention proposes a process for dyeing or printing cellulose textiles with a mono- or polyazo dye, which contains at least one ionogenic solubilizing group and at least one amino group which has a 1,3,5-triazinylamino group as a nitrogen substituent, the latter at least one Contains halogen atom bonded to a carbon atom, according to patent 1041 461, and which is characterized in that the acid-binding agent before dyeing by impregnating the textile process for dyeing or printing
Cellulosic fabrics

Addendum to the patent: 1041461

Applicant:

Imperial Chemical Industries Limited, London

Representative:

Dr.-Ing. H. Fincke and Dipl.-Ing. H. Bohr,

Patent Attorneys, Munich 5, Müllerstr. 31

Named as inventor:

lan Durhamm Rattee,

Irwin Seltzer,

William Elliot Stephen,

Charles Douglas Weston, Blackley, Lancashire

(Great Britain)

Claimed priority:
Great Britain April 18, 1956 (11804),
dated April 10, 1957

substances is applied with a dilute aqueous alkali solution.

The strength of the solution in the acid-binding agent used can be 0.1 to 3.0%. In certain In cases, smaller amounts of the acid-binding agent, for example 0.01%, can also be used will.

In carrying out the process, the excess acid-binding agent solution can be removed prior to treatment with the dye. Before the treatment with the dye, the impregnated material can optionally be dried ^{at any temperature, for example between 80 and 110 ° C.} Thus, according to one embodiment of the invention, the treatments with the acid-binding agent and with the dye can be carried out as two pad treatments. According to another embodiment, the impregnation with the acid-binding agent can be carried out with a pad treatment and the dye

709 679/502

3 4

by printing the impregnated textile material, the light, wash and rub fastness properties were also noted one of the thickened shafts containing the dye obtained. The method has the advantage Printing paste can be applied. Treatments of ease of use versus used with the acid-binding agent and with the dye conventional methods for producing color shades can as possible successively from a single S with similar authenticity properties, for example Bath are carried out, the cellulose with vat, solubilized vat and azo color material first in a solution of the acid-binding substances. These authenticity properties are also used By means of dipped uhd 'then the dye is added to the single bath method described here using. ·., - · · Turn of the usual batch dyeing equipment

When the dye solution and the acid-binding agent reach io.

Agents in block treatments, ■ whether separately or from example 1
a single treatment bath,

it is usually convenient to use 100 parts of a bleached smooth cotton fabric as the treated material

for a short time, for example 1 to 5 minutes, at room temperature with an aqueous

to heating or steaming to-as ~ be padded herausgestelltris solution, which · l, 0 ° / ₀ sodium hydroxide

has that such heat treatments generally includes being squeezed between rollers until the

reduce the amount of dye which is 200 parts in subsequent weight, and then at 100 ⁰ C

removed after washing operations. - dried. The tissue is then in an aqueous

For the dyeing of cellulose textiles according to the pre-solution padded which contains 2% of the red dye according to the invention applicable dyes can be obtained by coupling 1- (4 ', 6'-dichloro by known processes. And an s-triazine- 2'-ylamino) -8-naphthol-3,6-disulfonic acid with coordinated metal, such as copper, is obtained from diazotized O-anilinesulfonic acid. For example, 1 mole of a Aminomono- squeezed until the weight is about 200 parts, or -polyazoverbindung (wherein the amino group, then 1 min steamed at 100 ⁰ C in length. This may be mono-substituted), which is then thoroughly at least one tissue as rinsed with water, ionogenic solubilizing group, for example the remaining caustic alkali by treatment - SO ₃ H or - CO ₂ H, contains, with 1 mol of a cyanuric acid halide partially neutral with aqueous sodium bicarbonate, such as cyanuric acid chloride or sated and then bromide in a weak soap solution , condensed to dyes with a boiled, rinsed with water and dried.
To obtain Dihalogcntriazineruppe. There can also be 30 The fabric gives a glossy red tint, the products are used that are washable and lightfast by replacing one.
second of the halogen atoms of the cyanuric acid halide

by a hydroxyl, thio or amino group or example 2
obtained by an organic radical,

which is attached to an oxygen, sulfur or nitrogen 35 cotton fabric is converted into a 3% aqueous atom is bound. The products can also be dipped in caustic soda solution and dispensed between rollers be used, which squeezes by reacting a 2-alkyl- until the weight of the or 2-aryl-4,6-dihalotriazine such as 2-methyl remaining solution equal to the weight of the tissue 4,6-dichloro-s-triazines, and 2-phenyl-4,6-dichloro-s-tri- is, and dried.

azines, with 1 mole of an aminomonoazo or polyazo 40 The treated fabric is coated with a printing paste

Connection can be obtained, which is printed at least one, which is made from the following components

contains ionogenic solubilizing group. will provide:

After the textile material with the dye _. _ .. "_. . , _Λ

solution has been treated, the dyed textile ^Fa T ^b A ^t0 F * ^S 5 ™ ,? ^ice P ^iel * ^'with' _.,

substance, for example, by rinsing with water, 1 mol of aniline condenses 3 parts

wash to every present in the textile - urea 5 parts

those loosely bound dye, each acidic water 57 parts

agents and dye bath or printing paste additives

medium to remove. The fastness of the dyed textile 5% aqueous sodium alginate

materials versus washing and rubbing treatments 50 solution 35 parts

is usually improved by getting the 100 parts

Material a washing process with a boiling

aqueous solution of soap or a cleaning agent. The fabric is then dried for 5 minutes

medium subjugates. This preferably steamed over a period of time, rinsed with cold water, for 5 minutes

Wash in a boiling 0.3 ° / o'gen aqueous solution of a washable area of 5 to 15 minutes

The process is much harsher than that normally washed as a neutral detergent, again with water

Washing stage when dyeing or printing with the rinsed and dried.

most of the commercial direct dyes used, the red prints obtained have good washing properties

because such dyes at a cleaning treatment and light fastness, and the tone is on the dyed

This type of treatment is washed out of the fiber by 60 parts evenly. In contrast, they are at

would. a cotton fabric, which in the same way,

The textiles, the dyes and the additives have been treated with the exception that

to the dyebaths and the printing pastes, as the dipping solution contains 15 weight percent caustic soda

used in the method according to the invention, prints obtained on the colored part

den, are the same as described in the main patent - 65 unevenly,

ben. Likewise, they become uniform and uneven

With the method of the present invention, yellow shades are obtained, depending on whether the in the

dyes are used on cellulosic fabrics with printing paste used by the dye

Claims (1)

5 6 is replaced, which by coupling of diazo heating the printed fabric to 105 ⁰ C on dry tated m-toluidine can be replaced with 2-naphthylamine-4,8-disulfone cylinders. acid and condensation of the aminoazo compound with 1 mole of cyanuric acid chloride is obtained. B e i s η i e 1 4 Example 3 The pad solution used in Example 3 is through an aqueous, 2% sodium metasilica and 0.5% A cotton fabric is replaced in a solution containing 2% sodium-sodium alginate. It will carbonate and 0.5% sodium alginate containing equally good results were obtained. This is used as a dipped in aqueous solution, dibromotriazinyl dye made from between rollers squeezes until the weight of the orthanilic acid diazotized back in the tissue, coupled with 2-methyl- held solution equal to the weight of the tissue amino-8-naphthol-o-sulfonic acid and condensed with is, and dried. 1 mole of cyanuric acid bromide is used. The treated fabric is covered with the printing paste of example 2 using the 15 colored dye printed, dried, 5 minutes claim:
long steamed, rinsed in cold water, 5 minutes in a boiling aqueous detergent solution, process for dyeing or printing washed, rinsed again in water and dried. Cellulosic fabrics with a mono- or poly-der Dye is produced as follows: Diazotized ao azo dye containing at least one ionogenic soluble 5-oxalylamino-2-sulfoaniline is with 1-naphthyl-making group and at least one aminoamine-7-sulfonic acid coupled. The Monoazoverbingruppe contains as nitrogen substituents a Dung is diazotized and bears with 1-phenylaminonaphtha- 1,3,5-triazine group, the latter at least lin-8-sulfonic acid coupled, the oxalyl group becomes a halogen atom on a carbon atom hydrolyzed and contains the amino-bis-azo compound bound with as, according to patent 1,041,461, condensed αϊ mol of cyanuric acid chloride. It is characterized by that the acid-fast Preserved dark blue print. binding agents before dyeing by impregnation In the above example, the dryers and rins of the fabric can be washed with a dilute aqueous Steam treatments by applying Er-alkali solution for 30 seconds. 709 679/502 10.67 © Bundesdruckerei Berlin