DE2930738A1 - Post-treating cellulosic textiles dyed with reactive dyes - with cationic cpds. to improve wet-fastness properties - Google Patents

Abstract

The dyes or printed material is treated with reactive cationic cpds. pref. of formula (I) (Z)m-R-(K+)n(X-)n (I) (where R = opt. substd. hydrocarbon which may also be heterocyclic; K+ = organic cationic gp.; X- = (in)organic amionic gp.; Z = fibre-reactive gp.; m and n = whole nos. >=1) and of formula (II) -CH2-+NR1R2R3 (II) (where R1-R3 = 1-4C lower alkyl or phenyl -(1-4)- alkyl, esp. benzyl-; two of R1-R3 may together with the N atom form a heterocycle such as morpholine, pynolidine, piperazine, or piperidine). The cellulosic material, e.g. cotton, has greatly improved wet-fastness and (I) and (II) may be used together with agents such as crease-resit finishes, anti-statics, etc., in a signal treatment bath.

Description

The present invention relates to a method for

Improving the fastness properties of reactive dyeings and prints Cellulose textiles.

The present invention relates to a method for dyeing or printing cellulosic fibers containing textiles with reactive Dyes, which is characterized in that the fiber material is after treated with reactive cationic compounds after dyeing or printing.

This invention also relates to textile treatment agents, which contain the aforementioned cationic compounds, as well as those using this means dyed textile materials.

The auxiliaries to be used according to the process according to the invention are at least partially water-soluble products of cationic polarity, which in contain at least one fiber-reactive group in their molecule. This group empowers the product to enter into a covalent bond with the cellulose molecule.

More specifically, the present invention relates to a method of the aforementioned type, in which the dyed or printed cellulosic materials subjected to an aftertreatment with compounds of the formula I, (z) -R- (K +) n) n (I) n where R is an optionally substituted hydrocarbon radical, which is also can be heterocyclic, a cationic group of an organic nature X is an organic or inorganic anionic group, Z is a fiber-reactive group and m and n are integers greater than or equal to 1.

In particular, is in the above formula, with otherwise the same Definition of the remaining radicals, the radical R is a cycloalkyl radical (C5 - C6), a phenyl radical or its alkyl (C1-C2) or chlorine mono- or di-substituted derivatives monocyclic phenylalkyl (C1 - C2) radical, especially an alkyl radical and preferred an unsubstituted alkyl radical with 1 to 4 carbon atoms.

Furthermore, the cationic group K is more aliphatic or more aromatic or of a heterocyclic nature, preferably one in which this is cationic Group is bonded to the radical R via a 0 or S or N atom. Particularly preferred Representatives of these cationic groups are quaternary ammonium or

Alkyl ammonium, sulfonium, pyridinium or morpholinium groups.

The inorganic or organic anionic est X is particularly a Chloride, bromide, iodide, sulfate, carbonate, phosphate, formate or acetate, especially an inorganic group such as chloride and sulfate.

The fiber reactive group Z is generally a group that includes the compound able to enter into a chemical bond with the hydroxyl groups of the cellulose. Such fiber-reactive groups are mainly the vinyl sulfone, sulfatoethyl sulfone, Sulfatoäthylsulfonamid-, Thiosulfatoäthylsulfonamid-, Sulfatoäthylsulfonacrylamid-, Methyltaurinoethylsulfone, acrylamide, a-halogenoacrylamide, chlorpropylamide, sulfatopropylamide, Haloacetic acid amide, mono- and di-halogen-1,3,5-triazine, trichloropyrimidine, Monochlorodifluoropyrimidine, methylsulfonyl-chlorinethyl-pyrimidine-, dichloroquinoxaline-, Dichlorophffialazine, benzchlorothiazole, dichloropyridazone and dichloropyrazine residues. Likewise suitable compounds are those which contain residues of aliphatic halocarboxylic acids, especially the chloroacetyl, p-chloropropionyl, a, 8-dibromopropionyl and dichloropropionyl radical and particularly preferably contain epoxy groups.

Particularly suitable auxiliaries are those of the formula II below wherein R1, R2, R3 is lower alkyl (C1 - C4) or phenylalkyl (C1 - C4), (especially benzyl) and in which two of the three substituents R1, R2, R3 further represent a heterocyclic ring with the N atom, like the morpholine, pyrrolidine, piperazine or piperidine ring.

These preferred groups can be used in the agents according to the invention be present separately or together, the latter are preferred.

The auxiliaries to be used in the process according to the invention can be used in all the processes that are also used for the fixation of reactive dyes are used on which cellulosic materials are applied, e.g. B. by pad Batch, Pad Dry, Pad Dry Steam, Pad Roll and exhaust processes.

The agents to be used according to the invention can simultaneously with Finishing agents such as anti-crease agents, anti-crease agents, antistatic agents and the like, which, however, must be compatible with the agents according to the invention, applied will. This makes it possible to improve authenticity and equipment in an economical way Way to be carried out in one operation.

With the help of the inventive means of the aforementioned type an excellent improvement in fastness properties, especially wet fastness properties of dyeings produced with reactive dyes on cellulose materials or Printing achieved. This improvement is important when using highly substantive Reactive dyes in their hydrolyzed form after dyeing or printing are often difficult to wash out. Because of the excellent fixing effect of the invention Medium it is also possible to use the color for light to medium tones boiling soaps of the colored ones otherwise required to achieve good fastness properties or printed To dispense with cellulose materials and / or the To reduce the number of washing baths. It can hereby simply be rinsed with hot water and subsequent treatment with the auxiliaries according to the invention have very good fastness properties be achieved.

The implementation of the auxiliaries to be used according to the invention with the cellulose fiber is preferably carried out in an alkaline medium. In doing so, are preferred Alkalis such as sodium hydroxide, sodium carbonate, sodium bicarbonate or alkali donors used as sodium trichloroacetate or sodium formate.

The agents to be used according to the invention are (based on the amount by weight of tissue) in amounts of 0.5 to 20%, preferably 1 to 10%, particularly preferred about 1 to 6% used, with the treatment liquors the auxiliary about in the indicated quantities. The liquor uptake of the fabric is around 70 up to 150%, preferably about 90 to 110%, if padding processes are used.

The liquor ratios are from 1: 4 to 1: 100, preferably about 1: 5 up to i: 20 when dyeing by the exhaust process.

The agents to be used according to the invention are known in principle or can be prepared in a known manner.

The reactive dyes to be used according to the invention are in the color index under the name "Reactive Dyes" known. The dyeing or Printing with these reactive dyes is done in a manner known in principle.

In the examples below, parts are weight or volume dividers Percentages by weight, temperatures are given in degrees Celsius.

B e i 5 p i e 1 1 An 8% exhaust dye of C.I. Reactive Red 86 on cotton goods is rinsed with cold and hot water after the dyeing process. After that, the goods undergo a boiling treatment, with a liquid / goods ratio of 10: 1 in an aqueous solution of 1 g / l sodium tripolyphosphate and 0.5 g / l of a conventional detergent, submerged for 15 minutes and then rinsed again with water.

The goods show a water fastness rating of 3 (PJ1 bleeding on cotton). A perfect water fastness (grade 5) is achieved if the goods are placed before the last one Rinsing bath with a solution of 20 g / l N-glycidyl-N-trimethylammonium chloride and 10 ml / l NaOH 36 ° Bé with a liquid / product ratio of 1: 1 and let stand wet for 15 hours at room temperature.

The fastness properties are equally good if N-glycidyl-N-trimethylammonium chloride is used instead N-glycidyl-N-methylmorpholine chloride used.

Example 2 An 8% exhaust dye of C.I. Reactive Blue 79 on cotton goods, which underwent a washing treatment as described in Example 1 is subjected to, has a water fastness rating of 3 to 4 (staining on cotton).

Perfect fastness properties (water and wash fastness) are achieved if the goods with a solution of 20 g / l N-glycidyl-N-trimethylammonium chloride before the last rinse bath and 10 g / l NaOH 36 ° Bé with a liquid / arene ratio of 1: 1 impregnated and let stand at room temperature for 15 hours.

Claims (5)

Process for dyeing or printing cellulose fibers containing textiles ~~ P a t e n t a n s p r ü c h e 1. Process for dyeing or printing cellulose fibers containing textiles with reactive dyes, characterized in that one the fiber material after dyeing or printing with reactive cationic compounds treated. 2. The method according to claim 1, characterized in that the cationic compounds are those of the general formula I, (Z) n -R- (K +) n (x-) n (1) where R is an optionally substituted hydrocarbon radical which is also heterocyclic a cationic group of organic nature can be X an organic or inorganic group anionic group, Z is a fiber-reactive group and m and n whole numbers are greater or equal to 1. 3. The method according to claim 2, characterized in that the cationic compounds are those of the general formula II wherein R1, R2, R3 is lower alkyl (C1 - C4) or phenylalkyl (C1 - C4), (especially benzyl) and in which two of the three substituents R1, R2, R3 further represent a heterocyclic ring with the N atom, like the morpholine, pyrrolidine, piperazine or piperidine ring. 4. Agents containing the compounds according to claims 1 to 3. 5. The dyed with the means of claim 4 cellulose-containing Materials.