CS219442B1 - Method of printing by the wet transmission of textile materials containing the cellulose fibres - Google Patents

Description

(54) Wet transfer printing method for textile materials containing callulase fibers

BACKGROUND OF THE INVENTION The present invention relates to a method for transfer printing textile fabrics, wherein the textile material containing cellulose fibers is modified with quaternary ammonium compounds in an alkaline medium, then wet-printed and finished by conventional drying, washing and soaping.

Wet transfer printing processes are well known. The anionic dyes are printed on a paper or metal support and are transferred at temperatures above 96 ° C on a calender to a moistened sheet, which may contain compounds that increase the fixation of the anionic dyes. Known compounds for improving the fixation of anionic dyes in transfer printing are primarily glyoxal-based resins, melamine resins and polyglycol-based resins. Further, these are acrylic thermoreactive copolymers. Additives of hydrotropes, such as urea, are also known to increase the solubility of dyes at transfer temperatures. Said known compounds swell fibers during dye transfer so that the dye can better diffuse into them or fix the dye on the fiber surface by forming a fine film. The disadvantage of all these processes is the lack of print stability, especially in abrasion, since the dye is only mechanically-physically attached to the fiber.

In addition to known compounds for improving the fixation of dyes in transfer printing based on botnels, resins, binders, where the dye is only mechanically physically attached to the fiber, quaternary ammonium compounds reacting in alkaline medium with hydroxyl groups of cellulose to form a covalent bond and quaternary ammonium group furthermore, it ionically binds the anionic dye. These substances - cationic preparations - can generally be formulated by the general formulas (1) and (2) of rxy-ch _from nr ₂

Ro / CH ₂ -ch ₂ \

Y-CH.-NZ ⁴ '/ HfCH' (V

(2)

9442 where

R 1 and R 2 are alkyls or hydroxyalkyls having a carbon number of 1 to 3

R 5 is alkyl, phenyl or alkylaryl Z is an oxygen atom or a group -CH 2 -

Y is —CH — CH2

O or —CH — CH2

I I

OH Cl

X is an anion of a strong organic or inorganic acid; n is an integer of 1, 2 or 3

The advantage of these compounds in wet transfer printing is the high utilization of dyes, the achievement of increased printing stability and the reduction of time and energy demands for printing and soaping the prints, as well as the saving of washing water.

However, these quaternary ammonium compounds used so far have only one reactive group Y, so that they can only ensure the binding of anionic dyes to cellulose.

This disadvantage is overcome by the transfer printing process of the present invention which introduces quaternary ammonium compounds of a new type. Quaternary ammonium compounds have two functional reactive groups and have the general formula (3)

where

K is the number 1 or 2 n is the number 1, 2 or 3

X is an anion of a strong organic or inorganic acid

Y is a group

CH2 - CH - CH2 -

O

CH2 — CH — CH2—

I I

Cl OH

M is a five or six-membered two-nitrogen cycle derived from pyridazine, pyrimidine, pyrazine, piperazine, pyrazole, pyrazoline, pyrazolidine or imidazole, wherein each hydrogen atom may be substituted with 1-4 carbon atoms to be treated together with the alkali or alkali substances cleaving the printed substrate and transfer dyeing fixates the dyes perfectly.

This results in higher efficiency. The use of the compounds of formula (3) in wet transfer printing refers to textile materials not only of purely cellulosic, but also of mixtures with synthetic fibers, in particular polyamide and polyester fibers. Suitable dyes for the process of the invention are substantive, reactive, acidic, metal complex and selected disperse dyes. These dyes are printed on a paper or metal support from an aqueous or organic solvent environment.

The compounds of formula (3) may be applied to the printed textile material prior to transfer printing by allowing the textile material impregnated with the compounds of the invention to be reacted with the compounds at room temperature or at elevated temperature. The reaction occurs simply by lying down in the pack at 20 to 30 ° C, or the reaction is accelerated by passing the textile material through the steam environment, drying or brief processing in the temperature range of 100 to 230 ° C. Washing, neutralization, washing and transfer printing follow. After the printing has dried, the short-term high-temperature treatment and the usual finishing, i.e. washing, soaping and drying, are optionally carried out.

Another possibility is to apply compounds of general formula 3 with addition of alkali to the textile material during the actual transfer, wherein the textile material is impregnated and at the same time the transfer printing is performed. Drying of the press is followed by steaming or dry heat treatment in a temperature range of 100 to 230 ° C and the usual finishes, i.e. washing or soaping and drying.

The concentration of the compounds of formula 3 in the bath impregnation is chosen in the range of 5 to 100 g. I ” ¹ . Suitable alkali is sodium hydroxide or sodium carbonate in a concentration of 2 to 50 g. I “ ¹ . When the compounds of formula 3 are applied concomitantly with dry-pressured printing at temperatures above 180 ° C, ammonia-releasing compounds, in particular hexamethylenetetramine, can advantageously be used as alkali. Compounds with an epoxy reactive group react with cellulose in the absence of alkali at the indicated temperature.

Said processes and compounds of the invention achieve high dye yields and high printing fastnesses which are higher than those of the prior art quaternary ammonium compounds. Usability of compounds of the invention in tisCH2 —CH — CH2— technology

I I

CH3 — C — O OH o

bonded to the nitrogen atoms of the cyclic compound M for wet transfer can be documented in these examples.

He did

The cotton fabric pre-treated in a conventional manner is soaked in a bath bath containing per liter of 1,3 di (2,3 epoxypropyl iumidazolium chloride g sodium hydroxide g ethoxylated oleyl alcohol (with 15 moles of ethylene oxide) at a 75% rinse at a bath temperature of 20 ° C.

The fabric is left in a wrap for 20 hours at 20 ° C, then washed, neutralized, washed and squeezed to a residual moisture content of 70%. The fabric is then fed to a transfer printing caiand where it comes into contact for 1 min. and a temperature of 120 ° C with a paper web printed with dye

Reactive yellow C. I. 7

Reactive orange C. I. 5

Reactive Blue C. Ϊ. 4

Reactive Black C. I. 8

This is followed by drying, washing and soaping by conventional methods. The resulting print exhibits very good wet stability.

Example 2

A fabric of 67% polyester staple and 33% cotton is soaked on fulard with a bath containing per liter of 1,3 di (3 chloro, 2 hydroxypropyl) -imidazolinium sulfate g sodium hydroxide g ethoxylated nonylphenol with 8 moles of ethylene oxide at a 60% rinse and bath temperature 20 ° C.

The fabric is left in a wrap for 20 hours at 20 ° C, then washed, neutralized, washed and squeezed to a residual moisture content of 60%. The fabric is then routed to a transfer printing caiand, where it comes into contact for 45 seconds at a temperature of 185 degrees Celsius with a ribbon printed with a dye.

Disperse orange C. I. 31

Dispersion Blue C. I. 73

Followed by washing and soaping according to the usual procedures. Both parts of the fiber mixture are evenly covered, the print shows very good wet stability.

Example 3

The viscose rayon fabric pre-treated in a conventional manner is impregnated onto the fulard with a bath containing per liter of 1,2 di (2,3-epoxypropyl) -pyridazinium chloride g of sodium carbonate kale.

g of sodium alginate (2% aqueous solution) g of ethoxylated oleyl alcohol (with 15 moles of ethylene oxide) at a 50% rinse and a bath temperature of 20 ° C.

The rumpled fabric is fed into a transfer printing caiander where it contacts for 1 minute at 100 ° C with a paper web printed with dye

Direct yellow C. 29

Direct blue C. I. 71

Straight Brown C.I. 218, then the printed fabric is dried at 130 ° C and condensed at 160 ° C on hotflu for 90 s. Printing is completed by conventional washing and soaping. The result is printing with very good wet stability.

Example 4

Cotton fabric pre-treated is impregnated onto a bath bath containing 1.3 g of 1,3 di (3 chlorine, 2 hydroxypropyl) pyrimidine acetate g of sodium hydroxide g of ethoxylated nonylphenol with 8 moles of ethylene oxide at a 75% rinse and a bath temperature of 20 ° C.

The fabric is dried at 120 ° C and condensed in a thermo-fluid for 2 minutes at 160 ° C, followed by washing, neutralizing, washing and rinsing the fabric to a residual moisture of 55%. The fabric is then fed to a transfer printing caiander where it is contacted for 30 seconds at a temperature of 100 ° C with a paper web, which is labeled with a printing paste of the following composition:

g Direct orange C. I. 39 g Direct red C. I. 80 g ethylcellulose g ethyl alcohol

The fabric is dried, washed, soaped and washed after transfer of the pattern. The result is printing with very good wet stability.

Example 5

Fabric of 67% polyester staple fiber and 33% cotton as usual pre-treated to fularda is soaked in a bath containing per liter g 1,2 di (2,3-epoxypropyl) pyrazolinium sulfate g hexamethylenetetramine g sodium alginate (3% aqueous solution) g ethoxylated nonylphenol with 8 moles of ethylene oxide at a 55% rinse and a bath temperature of 20 ° C.

The rumpled fabric is fed to a transfer calender where it contacts 1 minute at 95 ° C with a paper web that is printed with a printing paste of the following composition:

g Dispersion yellow C. I. 42 g Dispersion blue C. I. 79 5 g ethylcellulose g ethyl alcohol

After transfer of the pattern, the fabric is dried and treated with a dry heat treatment, for example, for 1 minute at 180 ° C. The usual finishing, ie washing and soaping, follows. The result is a printing in which the two fiber portions of the mixture are uniformly covered while achieving very good stability.

Example 6

50% polyester staple fiber and 50% viscose staple fiber, pre-treated in the usual manner, are soaked in a bath fulll containing 1 g of hexamethylenetetramine g sodium alginate (30% aqueous solution) per liter of 3 g of ethoxylated nonylphenol with 8 moles of ethylene oxide bath 20 ° C.

The rumpled fabric is fed to a transfer calender where it comes into contact for 1 minute at 100 ° C with a paper web that is printed with a printing paste of the following composition:

g 1,3 di (2,3 epoxypropyljimidazolinium chloride g Disperse red C. I. 121 g Reactive red C. I. 24 g Disperse blue C. I. 73 g Direct blue C. I. 67 g ethylcellulose g ethyl alcohol

After transferring the pattern, the fabric is dried and treated with dry heat, for example, on a fixing frame at 185 ° C for 1 minute. The usual finishing, ie washing and soaping, follows. The result is a printing in which the two fiber portions of the mixture are uniformly covered while achieving very good stability.

Claims (1)

OBJECT OF INVENTION A method of printing by wet transfer of textile materials containing cellulose fibers, wherein the textile material is modified with quaternary ammonium compounds in an alkaline medium, followed by wet transfer printing and finishing by conventional drying, washing and soaping, characterized in that the quaternary ammonium compounds have the general formula CH2-CH-CH2-ZO CH2 — CH — CH2— I I Cl OH CH2 — CH — CH2— Y-M-Y TO* Q CH 3 -C 10 OH O bonded to the N atoms of the cyclic compound M where K is the number 1 or 2 n is the number 1, 2 or 3 X is an anion of a strong organic or inorganic acid Y is a group M is a 5- or 6-membered two-nitrogen cycle derived from pyrldazine, pyrimidine, pyrazine, piperazine, pyrazole, pyrazoline, pyrazolidine or imidazole, wherein the individual hydrogen atoms may be substituted with alkyls of 1 to 4 carbons.