CS217123B1 - Method of pretreatment of textile materials containing cellulose mainly cotton fibres - Google Patents

Description

The present invention relates to the use of reactive quaternary ammonium compounds in the pretreatment of cellulosic fiber containing textile materials. The improvement in color fastness offered by the use of reactive quaternary ammonium compounds is undoubtedly an important factor affecting the scope of development work.

As is known, cationic preparations react in an alkaline medium with the hydroxyl groups of cellulose to form a covalent bond. The quaternary ammonium group then ionically binds anionic dyes. It is apparent from a number of works that the application of cationic preparations prior to dyeing is of greatest importance, with the economic benefits of this technique being the highest.

Recent evidence suggests that the use and effect of N (2,3-epoxypropyl) - Ν, Ν, trial-trialkylammonium and N (3-chloro, 2-hydroxypropyl) - N, N, N-trialkylammonium cationic preparations to increase even further if the textile materials containing cellulosic, in particular cotton fibers, are allowed to swell in alkali metal hydroxide solutions, preferably in sodium hydroxide solution prior to treatment with these cationic preparations.

Further development of this technology has found that the same result can be achieved by a new method of pretreating textile materials containing cellulosic, in particular cotton fibers, in which the textile materials are bonded with sodium hydroxide solution at a concentration of 100 to 100%.

350 grams of solution of compounds of formula (1) are then processed immediately or after delay

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is alkyl or hydroalkyl having a carbon number of 1 to 4 are alkyl radicals having a carbon number of 1 to 6

-s kkupOra-CHg-nbbo aoom gourd ee kkuptna-CH. nbbo - CH - CH 2 O 2 O 2 O ^H Cl *

jn - read number 1, 2 or 3 where.

Rj

OF

Y o

Tnetilií To prepare solutions of sodium hydroxide, a suitable concentration of NaOH 1 _(л ° 35 ° β · 1 ^-1 9 above separately ^{t h} o ^d N, ^and then ^{170 to} 250 gl ^-1 ·

The effect of the aqueous sodium hydroxide bath is similar to metrroring or leaching · The foil material is impregnated with an aqueous sodium hydroxide bath on a fullar, on a meerceration machine or conventional leaching equipment. dopooruSuJe in the range ^1-20 at rá.n konoentreal ''20 ° to 35 ° GL ¹ no ^b about 2 ° to about 24 ° while ^mL noenttnaji ^ _ ² ° to ¹⁰ °° gl ^-1 · Melting ^originally hydroxide bath sodo ^eh of muuí be between 5 ^and 8 ° C, as in the mercerization podotaě or iridescence, Optimay ^{10 and 3} ° C ·

The treatment of the textile material in the water bath containing the quaternary amide compound of the formula (1 ⁾ is carried out in order to bind the duct to the covalent bond by means of a covalent bond. ^h of textile material and the temperature is 2 ° ^and. 8 ° C · ^This processing is used ^{b-EZO é} stao the device - oapř.fSlár, džigr ha Spit, oábalové device Rotowa bar / DOI Baric jet apparatuses or machines · Length Lazo oa these machines 1 and 0 , 8 to 1 t 25 · the smaller the ratio, the greater the utilization rate of the quaternary amoot compound ·

The treatment with cationic formulations of formula (1) may be carried out in a long bath at a bath length of 1 to 2 to 25 at a temperature of 20 to 80 ° C for 15 minutes to 6 hours, preferably at 5 ° to 6 ° C after the treatment. 3 ° to 6 ° min and compounds of the formula (1) in a bath of 1 ° to ⁸ ° g.-1 ^-1 ·

However, these compounds can be applied to fabrics of rapeseed alkali hydroxide solutions by wet cloning and wet or other suitable technique, for example from foams. Fixation of compounds of formula (1) can then be accomplished by cold or hot aging, optionally steaming with saturated steam. ^ TTI in Tobal cold, melting at ² ° ^and 5 ° ² (otHoftení muuí then take 4-24 hours · Uercch.ení reaction MZI cellulose and quaternary compounds can amoidovou provéet steaming saturated steam at 1 ^{and 10} °° 5 ° C for ²⁰ to ^b and ^{from 360} s.Po treatment in the aqueous bath n quaternary ammonium compound fabric can directly be introduced into the bath barlcí or may be printed · If dyeing is not followed immediately or alk ^ and ^ in the dyeing lLta ое ^ аои ^, it is better to neutralize and wash the wash so that the alkali does not cause yellowing or damage to the textile material ·

Particularly suitable for the pretreatment process according to the invention are those quaternary amoeded compounds of the formula (1) which, under X and olootic inorganic acids, e.g. UF ooao as benzene, pt * ^ o ^ L ^ ^ C ^ uon0ul.í OAO ₉ or methane ulfooat nttosulfooto, then acidic alkyl radicals STER inorganic kyselit as methosiufát onbo nthoaiufát ·

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The following compounds i may be mentioned as representatives of the compounds of formula (1)

N (2,3-epoxypropyl) -N-methylmorpholinium chloride

N - (3 - chloro - 2 - hydroxypropyl) - N - methylpiperidinium methosulfate.

The pretreatment process according to the invention is suitable for yarns, strands and flat fabrics such as fabrics, knitted fabrics or nonwovens. The textile material must contain hydroxyl groups such as native cellulose fibers or regenerated cellulose fibers. It may consist of a mixture of these fibers with polyester, tracetate fibers ·

The pretreatment method is particularly suitable for a textile material containing cotton fibers which is well tolerated by processing even with high sodium hydroxide concentrations and is required to cover affinity irregularities in subsequent dyeing, i.e. cover of dead and immature fiber studs. utilization of the quaternary ammonium compound of the formula (1) compared to the hitherto known method of its application ·

The dyeing of the textile material is carried out with anionic dyes known as direct, reactive and acid dyes. These dyes are described in the Color Index,

3rd Edition (1971) ·

The dyes can be used with known discontinuous, semicontinuous or continuous processes and machines suitable for the textile material. · The degree of dye utilization is very high and a level of stability can be achieved, corresponding in most criteria to high-quality reactive indigo- or vat dyes.

The pretreatment process according to the invention has a great effect on reducing the consumption of anionic dyes and on the cost savings of expensive quality dyes. The consumption of water, its salinity and ecological conditions in the vicinity of the dyes will be reduced. The pretreatment method can be used to perform merceration or leaching on conventional machinery. However, to ensure the necessary modification, the conditions for perfect action of the sodium hydroxide and the quaternary ammonium compound must be maintained. It should be noted that the resulting effect of the pretreatment process of the present invention is not simply the sum of the separate performance of the merceration and the separate modification, but is significantly higher.

Until now, the use of cationic agents has been able to achieve dead and immature fiber coverage only with drying technology and hot-air fixation of the pass. in the manner of postponing the big pack. The coverage of dead and immature fibers is perfect even for those dyes which, according to the dyeing plant, have been identified as unsuitable for dyeing materials containing dead and immature fibers.

A specific embodiment of the pretreatment process according to the invention is described in the following examples.

Example 1

The pre-treated cotton shirt is soaked in a 10 ° C water bath with a 70% rinse,

200 · · 1 ~ 1 sodium hydroxide.

After being packed for 30 min, the fabric is processed without gaps on a jug bath containing 30 gl of ¹ N (2,3-epoxypropyl) - N-methylmorpholinium chloride. Bath length 1 and 3, treatment time 45 min at 55 ° C, then washed and neutralized with acetic acid. Dyeing is also carried out on the jug. Dyeing for 40 min at 80 ° C with dye Reactive Blue No. 4 in 2.5% · The resulting dyeing has very good wet and light fastness, the dye is completely drained from the bath , dead and immature fibers are completely covered. Instead of the usual soap, one pass with cold water washing is sufficient.

A similar result is obtained when other quaternary ammonium compounds of formula (1) are also used, for example compound N (3-chloro, 2-hydroxypropyl) -N-ethylmorpholinium bromide.

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Example 2

Pretreated spruce cotton fabric was padded with an aqueous impregnating bath at ² 5 ° C) with 65% odmačkem, obsiúiuSíoí

180 g ^-1 sodium hydroxide.

On the second fullar, this fabric with a 110% wound is applied with 7 ⁰ gl ” ^{1 N} (3 '' - ctoor,

- hydroxypropyl) - N - meylpiperidim meehuouufát.

The fabric is left to rest for 6 hours at 25 ° C, then washed on a jug and

Following staining džigru 3 '% Direct Red dyes č.CI 80 for 40 mn and 9 at ⁰ ° C. The dye after this time ^'s entirely red ^pA of NO and ^Z e finally turns the fabric you ^p rat only one passage in cold water.

The resulting saturated brilliant red coloring is comparable in all parameters to the naphthol coloring. A similar result is obtained when other quaternary arnoid compounds are used, as exemplified in Example 1.

Example 3

The elastic greaseer, blended with 76.5% cotton, 22% polyamide and 1.5% polyurethane, was impregnated with water baths on the flasks as in Example 2. However, instead of resting, the fabric was scrubbed with saturated steam at 102 ° C for 1 hour. mnThe washing and neuuralization is followed, as in Example 2. The same coloring as in Example 2 is obtained.

Claims (6)

BEFORE YOU KNOW, I CLIMB A method for pretreating cellulosic textile materials, in particular cotton fibers, which provides the cellulose fibers with a quaternary amood compound before dyeing with anionic dyes, characterized in that the textile mttril is treated with a water bath containing a water bath. 100 ^e 35 ^{0 g} .1 "tydroxidu sodnáho ¹ to e ^{N e} is treated with an aqueous obeι ^t hi ^clay з ^L-axis in the quaternary Amun obeonáho compound of formula (1) wherein ^R 2, Z Y * 1 · 3. 4 ^{/ R} 3 is an alkyl or hyKdroQya.kyl having a carbon number from 1 to 4 R 1 is an alkyl radical having a number of 1 'to 6 is a group - CH 8 - or an oxygen atom - a group - CH 1 - CH, or - CH - CIL, I Z 11 0 OH Cl is 1, 2 or 3 · is 2. A method of pre-treatment according to claim 1, characterized in that it comprises:. Road-textile 'treated with aqueous hydroxide bath sodróho of .km ^ x ^ t ^ t ^ e ^ t ^ jr ^ i ^z 350 and 200 * ¹ íj.l for. 1 and ²⁰ mn at a temperature ^of 10 to 30 ° c. 3. The pretreatment method according to item 1,. characterized 4ώι IE ee textile treated with aqueous mrteeriál ^la tydrcx added with sodium ^Ah ^ oo konoentireai '10 ^{f 0} and ^{200 g} .l '* · ² for 0 ^{and 2} 40''p ^ Mn three temperatures ^of 10 to 30 Deň: 32 ° C. 4. The method of pretreatment podle.bodu 1 vyzaučený by textile processes Mace ^ l ^ aq sounds encompass 1 ⁰ and ^{60 g of} alpha: l ~ ^ KRE ^ and ^ tc ^ em ^{í é} tmocn.ov sloi ^No enyne for ³⁰ and ⁶⁰ min at 40-80 ° C. 217 123 5. The preconditioning process of claim 1, wherein the textile material is impregnated with a water bath containing from about 1 to about 80 grams per liter of craternary ammonium compound, followed by a 2 to 24 hour lining at a temperature of about 15 ° C to about 30 ° C. 6. A preconditioning method according to claim 1, wherein the textile material is treated by impregnating with a water bath containing 10 to 80 g. Of a quaternary ammonium compound and steaming at 100 to 110 [deg.] C. for 20 to 360.