CS262225B1 - Reactive softening and hydrophilizing agents - Google Patents

Abstract

The active ingredient of softening and hydrophilizing preparations for cellulose textiles is a compound of the general formula I, i Rž. Í. v k~ r=q κx - CHj· CH-CHg-N^jN·- CH^Y f I 1 where Ri is a carbon radical with one to three double bonds and a carbon number of 14 to 21, R2 and R3 are hydrogen atoms, alkyls or hydroxyalkyls with a carbon number of 1 to 4 or represent the group Rt—CO—, I is an integer 2 to 6, S is an integer 1, 2, 3 or 4, X is an anionic radical and k is an integer 1, 2 or 3. Application in final resin anti-crease and non-iron treatments is particularly advantageous.

Description

The invention relates to the use of imidazolinium O derivatives of unsaturated carboxylic acid amides as reactive and hydrophilizing A—B _m —D—C (1) preparations for cellulose fibers. \

The use of imidazolinium derivatives in the field of textile auxiliaries has been expanding in recent years. New types of compounds are being developed and their applicability is being monitored. The most recently developed substances include compounds protected by AO No. 261907, originally intended for finishing dyeing of anionic dyes. - These are compounds based on structural units of the formulas.

y K k ^Λ

-Ch _z -Ch -CH _z -N&N-CHfCH-CH _z (3) OH OH where

A denotes alkyl or hydroxyalkyl with 1 to 10 carbons

B represents the group — CH _and —CH=CH—, m is an integer from 1 to 3,

D is alkylene or hydroxyalkylene with 2 to 10 carbons, r is an integer of 2 to 6, s is an integer of 1 to 4, ~ g Uj k is an integer of 1 to 3,

X is an anionic residue.

Upon closer examination of the properties of the compounds according to AO 261907, another surprising effect of some substances was found, namely the ability to bind covalently to the alcoholic groups of the cellulose macromolecule and thus cause modification of the properties of this substrate.

By the action of compounds of the general formula

R,-C.

,0 'MI

Ro

- CWrCH-~ CW-UW-CH _Z ^,lf}

OH

Cl

R1 is a carbon radical with one to three double bonds and a carbon number of 14 to 21,

R ₂ , R 3 are hydrogen atoms, alkyls or hydroxyalkyls with 1 to 4 carbons or represent a group

O

FROM

Ri-C r is an integer from 2 to 6, s is an integer 1, 2, 3 or 4,

X is an anionic radical, k is an integer of 1, 2 or 3, a permanent softening and hydrophilizing effect is achieved on cellulose fibers.

The same property is possessed by constitutionally similar compounds, which are no longer included in the protection of the original AO 261407 and have the general formula

R, / ³ (CH^-N

- CH^CH-CHa-N^N-CHa-CH-CH. (5)

OH .0

282229 where the symbols R _b R ₂ , R ₃ , r, S, k, X have the meaning given in general formula 4.

The reactions between cellulose and compounds of general formulas 4 to 5 occur in alkaline baths, but after drying also in a neutral environment due to increased temperature. These compounds are able to react in an acidic environment with resin crosslinking preparations used for non-iron and anti-wrinkle treatments of cellulose textiles.

This suggests the possibility of advantageous use of compounds of general formula 4 and 5 in permanent finishing treatments. In particular, their use in resin treatments is very important, since the compounds according to the invention eliminate the reduction in hydrophilicity of the cellulose substrate due to crosslinking.

In this context, a favorable effect of compounds of general formula 4 and 5 on suppressing the release of formaldehyde from treatment baths and from textiles after treatment was found.

The reaction with the resin preparations takes place under the usual conditions prescribed for crosslinking of cellulose materials. For dry crosslinking, temperatures of 130 to 190 °C with reaction times of 5 minutes to 20 seconds are therefore required.

For wet crosslinking in the presence of strong mineral acids, the required time is 12 to 24 hours at a storage temperature of 20 to 25 degrees Celsius.

The advantages of the invention are illustrated by the following examples:

Example 1

A brightly woven cotton fabric, after the usual pretreatment, including scorching, desizing, mercerization and bleaching, is impregnated on a foulard with a bath containing g . I ¹ l,3-bis(hydroxymethyl)imidazolidin-2-one, g . I” ¹ MgCl a. 6 H ₂ O,

gl ^_1 compound no. 1 from:table 1.

Bath temperature 25 °C, wringing 75%.

After passing through the fular, the fabric is dried and then fixed at a temperature of 180 °C for 40 seconds.

The final crease-resistant finish shows very good recovery angles and hydrophilicity expressed by a drop test with a value of 5 seconds.

Example 2

The fabric according to example 1 is soaked in a bath on a scarf

120 gl ^-1 l,3-bis(hydroxymethyl)imidazolidin-2-one,

120 ml. 1 ^_1 hydrochloric acid 35% 20 g. I ^-1 compound no. 2 from table 1.

After passing through the felter, the fabric is packed onto a large-diameter trolley and left to rest for 24 hours at 25 °C with constant rotation. The repair is completed by washing and neutralization. The fabric exhibits excellent non-iron properties, the wet recovery angle is 138°, the hydrophilicity based on the drop test is 2 seconds and the amount of free formaldehyde on the fabric is 75 ^g . g ^-1 ..

Example 3

After pre-treatment and dyeing on a dyeing reel, the cotton knit is processed for 15 minutes at a temperature of 40 °C in a bath containing

g. I ^-1 of compound No. 3, Table 1.

This is followed by dewatering by centrifugation and drying on a frame at a temperature of 130 “C. The braid shows excellent hydrophilicity and softness. The repair is permanent in washing.

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Claims (1)

OBJECT OF THE INVENTION The use of compounds of formula I Rj-C Ni Ro (CH 2 -n ICHCHCHCHCHNN-CHCHY (I) wherein R _t is a carbon residue with one to three double bonds and a carbon number of 14 to 21, R ₂ and R ₃ are hydrogen atoms, alkyls or hydroxyalkyls having a carbon number of 1 to 4 or denoting a group O y R 1 - C r is an integer from 2 to 6, s is an integer of 1, 2, 3 or 4, X is an anionic radical, k is an integer of 1, 2 or 3, Y is -CH-CH ₂ OH or Cl -CH- CH, \ / O for permanent softening and hydrophilizing treatment, in particular of textiles containing cellulose fibers.