DE1802187A1 - High molecular weight polyethylene glycol as an agent to increase the absorption capacity of cellulosic fabrics - Google Patents

Description

CIBA AKTIENGESELLSCHAFT, BASEL (SWITZERLAND)

Case 6294 / E

Germany

"High molecular weight polyethylene glycol as a means to increase the absorption capacity of cellulose-containing tissues"

The present invention is the use of high molecular weight polyethylene glycol as an agent for Increasing the absorption capacity of cellulose-containing fabrics for aqueous preparations used to refine the fabric.

The aqueous preparations used for finishing include, in particular, liquors for impregnating cellulose-containing liquids Understanding tissues. The addition of high-molecular

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kular polyethylene glycol is here the liquor absorption capacity elevated. But there are also preparations for that Coating and printing of cellulose-containing fabrics into consideration, namely printing pastes for screen printing. By the addition of high molecular weight polyethylene glycol in amounts of e.g. 0.1 to 2 g / kg printing paste increases the absorption capacity of the fabric to be printed increased.

Usually one uses polyethylene glycol, the one

5 8 average molecular weight from 10 to 10, preferably

fi 7

10 to 10. Polyethylene glycols of such high molecular weights are made from alkylene oxides, preferably ethylene oxide, and are water-soluble. They are considered white dry, fine powders are obtained that are easy to pour.

An addition of only small amounts, preferably 0.1 to 2 g / l, of these polyethylene glycols to an impregnation liquor causes a substantial increase in the fleet. Quantities of 0.25 to 1 g / l impregnation liquor are very particularly suitable.

Cellulose-containing fabrics include fabrics made from natural or regenerated cellulose as well as "mixed fabrics" to understand cellulose with other fibers such as polyester, polyamide, polyacrylonitrile or wool.

These polyethylene glycols are particularly effective as a means of increasing liquor uptake if they are poorly absorbent Fabrics such as tarpaulins are to be impregnated.

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While using the usual wetting agents on well-absorbent tissue, none and only on poorly absorbent tissue a slight increase in liquor uptake is achieved when using the high molecular weight polyethylene glycols a clear or a strong improvement in the liquor pick-up.

The cellulose-containing fabrics can be impregnated by conventional methods. It can e.g. after the dipping or exhaust process are used, in particular it is advantageous to padded the fabric.

The high molecular weight polyethylene glycols are used in impregnation liquors, for example for antimicrobial, crease-proof, shrink-proof, oil-repellent, soft-grip and in particular Mold-proof, flame-proof or hydrophobic finishing of cellulose-containing fabrics. Also in dye liquors these polyethylene glycols can be used.

The high molecular weight polyethylene glycols also have the advantage that they can be used with other auxiliaries and finishing agents are well tolerated and e.g. when used in a water repellent process do not affect the water repellency values. Furthermore, the high molecular weight polyethylene glycols cause their application also practically no foam.

The impregnation liquors can of course in addition to the polyethylene glycol and the finishing agent as well as various other auxiliaries such as other wetting agents, thickeners, Emulsifiers, solubilizers or migration-preventing agents contain.

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The impregnation liquors are expediently produced in such a way that that the polyethylene glycol is slowly sprinkled into cold water and carefully until it is completely dissolved is stirred. The long polymer chains can be destroyed by vigorous stirring, and the effect as an impregnation aid to increase the liquor absorption is thereby increased largely repealed.

Another object of the present invention is accordingly also a process for finishing, preferably impregnating, of cellulose-containing fabrics, characterized in that the aqueous preparation used to refine the fabric contains high molecular weight polyethylene glycol as a means to increase the absorption capacity.

In the following examples, percentages and parts are to be understood as units of weight.

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400 g / l 80 g / l 10 g / l 20th ml / 1

example 1

To determine the recording of the plot, good and bad absorbent fabrics are padded in baths that contain various wetting agents.
All bathrooms contain:

an 80% aqueous solution of

3- (dirnethylphosphono) -methylolpropionamide

a 60 # strength aqueous solution of a methylolmelamine methyl ether.

urea

a 20 # aqueous polyethylene emulsion

4 g / l ammonium chloride

The following wetting agents are now added to such a bath:
Bath 1: No wetting agent additive

Bath 2: 10 g / l of a 12 l / 2 # solution of a condensation product of 1 mol of p-tert-octylphenol and 8 moles of ethylene oxide

Bath 3: 50 g / l of a wetting emulsion consisting of:

22 g of a reaction product of 80 parts of a hexamethylolmelamine butyl

ether with 100 parts of a polyethylene glycol from

Molecular weight 4000 408 g water and 570 g cyclohexanol

Bath 4: 0.25 g / l of a polyethylene glycol with a molecular weight of ⁶ to 107.

Bath 5: 0.5 g / l of a polyethylene glycol of molecular weight lo ^ to 10?

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When poularding in baths 1 to 5, the following liquor pick-up takes place obtain:

tissue % Liquor uptake in baths 2 3 88 5 Cotton serge
mercerized and bleached
(good absorbent) 1 81 83 67 103 Cellulose fabric, raw
(poorly absorbent) 81 38 56 77 30th

Example 2

To test whether the flame retardant finish by the addition of high molecular weight polyethylene glycol even with increased Liquor pick-up is stored in the fabric, phosphorus determinations are made by the fabrics with and without the addition of polyethylene glycol carried out.

The tissues are bathed with the same basic composition as described in Example 1, padded.

Bath 1 contains no wetting agent and bath 2 contains 0.75 g / l of a polyethylene glycol with a molecular weight of 10 to

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The fleet uptake amounts to:

tissue % Plot recording in bathrooms 2 Cotton serge
mercerized and bleached
(good absorbent) 1 103 Cellulose fabric
(poorly absorbent) 81.5 77 30th

After padding is dried at 80 ° C and the Phosphorus content on the fabric is determined:

tissue % Phosphorus on fabric
padded in bathroom 2 Cellulose serge
mercerized and bleached 1 4.20 Cellulose sheet tissue 3.38 3.22 1.22

In accordance with the higher liquor uptake, the flame retardant finishes with the addition of polyethylene glycol also have a higher amount
Phosphorus content.

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Example 3

Wetting agents which are used in the waterproofing, no ^1l rewetting "properties may have. High molecular weight polyethylene glycol is here, therefore, compared with the waterproofing and waterproofing in a combined-flame-proofing the network emulsion according to Example 1, Bath 3.
The bathrooms are composed as follows;

Bath composition Conc.
unit Bathroom no. 1 2 3 4th 5 80 # aqueous solution
from 3- (dirnethylphosphono) -
methylol propionic acid amide g / l - - - 400 400 .6O # aqueous solution
of a methylol melamine
methyl ether g / l - - - 80 80 urea g / l * "- - 15th 15th Ammonium chloride g / 1 - - - 4th 4 · one. Solution consisting
the end:
$ 45 of a condensation
product of 1 mole of tri-
ethanolamine with 1 mol
of a stearic acid hexa-
methylolmelamine-methyl-
ether condensation product
tes,
$ 45 paraffin from enamel
point 60 C
1O # tetrachlorethylene g / i 60 60 50 60 60

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. (Port setting from table page Conc.
unit 8th) 2 bath No. 5 Bath composition ml / 1 15th 3 4th 15th Acetic acid 40 # 6/1 1 3 12.5 15th CU Aluminum sulfate crystall. ml / 1 15th 50 2.5 2 - Nefczemulsion according to
Bath 3, example 1 g / l 3 - - - 0.75 Polyethylene glycol dated
Molecular weight
10 ⁶ to 1O ⁷ - 59 0.75 - 106 Plotting from Cellu
lose-Serge at the poulardie
ren in - 82 80 69

The water-repellent properties are due to the water absorption capacity determined after a short period of rain. This so-called spray test is carried out according to SVMT 25 / D 1332 (1950) or ASTM D 583-40T (1944) or AATCC Standard Test Method 22-52 carried out:

tissue % absorbed water of
Fabric treated with baths no. CVl 3 4th 5 Cellulose serge equipped
tel quel
Cellulose serge equipped
and washed after 3xSNV-3 1 1.8
4.3 2.3
4.2 3> 4
11.3 1.5
3.9 1.8
5.6

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In another test, the so-called Bundesmann'est the water-repellent properties of a fabric due to the water absorption and the water permeability determined when sprinkling. This federal man test is carried out according to SNV 98575 (1963).

Cellulose serge equipped: • Testing of tissues
equipped in bathrooms no. 2 3 4th 5 tel quel; % Water absorption
ml of water penetration
washed after 3 x SNV-3:
% Water absorption
ml of water penetration 1 15th
20th
30th
30th 20.6
21
23.5
■ 25 32
86
29
12th 29
60
27
10 14.5
19th
31
90

Neither the wetting emulsion nor the polyethylene glycol influence the water repellency values. The plot is, however greater when using polyethylene glycol than when using the wetting emulsion.

SNV- ^ Wash : The fabric is in an aqueous solution of

5 g of soap and 2 g of anhydrous sodium carbonate per liter for 30 minutes at 60 C Gewä-. see.

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Example 4

Raw cotton tarpaulin is padded at 20 C as follows:

the end
armor fleet Squeeze
effect Fleet
acquisition related
on preparation
Q A. 16.55 g / l preparation Q 11 io 0.18 io B. 2.28 g / l preparation Q
0.5 g / l polyethylene
glycol from the molecule
larweight
10 ⁶ to 10 ⁷ 79 io $ 0.18>

Preparation Q : Aqueous preparation containing a reaction product of phenyl mercury acetate and dimethylol melamine. The preparation contains, based on the starting substances, phenyl mercury acetate and 10 $ dimethylol melamine.

After poularding, it is dried, with the same roller pressure being applied to both equipment.

The two equipments are checked for their effectiveness in preventing the growth of microorganisms tested by placing rounds of 25 mm diameter of the two finished tarpaulin tissues on wort agar plates and then inoculated with Aspergillus niger.

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- 12 -

The plates are then incubated at 30 ° C. for 72 hours. On the one hand, the inhibition zone around the rondelles and, on the other hand, it is assessed microscopically detectable growth under or on the tissue:

equipment Tel source According to SFV 95814 - laundry A. No vegetation
8mm inhibition zone Vegetation B. No vegetation
5mm inhibition zone no vegetation
0mm inhibition zone

SNV Q58l4 laundry:. ■.

The fabric is in an aqueous solution of 5 g of soap and 2 g of anhydrous sodium carbonate per liter at a Plotting ratio of 1:50 for 30 minutes at 95 ° C in a washing machine that still contains 10 steel balls, washed.

The addition of polyethylene glycol to the bath for equipment B has a much higher squeeze effect and results in a better wash resistance of the Schiramel finish with the same active ingredient content on the fabric.

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Example 5

To test how high-molecular-weight polyethylene glycol is able to absorb the liquor from cellulose-containing fabrics Increased in dye liquors, samples of cotton tricot in liquors containing 5 g / l of a water-soluble red reactive dye and 0 to 100 g / l of an aqueous solution of one

r τη

Polyethylene glycol with a molecular weight of 10 to 10

o 2

hold at 25 C and a roller pressure of 150 kg / cm padded.

The determination of the liquor uptake (squeeze effect) results in the following values for the various wetting agent concentrations:

Bathroom no. liquid solution poly-
ethylene glycol
g / liter 3? Lo ttenaufme in fo 1 O 8.2 2 20th 77.5 3 40 65.7 4th 60 51.6 LfN 80 46.5 6th 120 49.0

With baths 2 to 6, a significantly increased liquor uptake is achieved compared to bath 1.

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Claims (8)

Claims 1. Use of high molecular weight polyethylene glycol as a means to increase the absorption capacity of cellulosic Fabrics for aqueous preparations used to refine the fabric. 2. Use according to claim 1, characterized in that that the high molecular weight polyethylene glycol as a means to increase the Plottenaufnähme when impregnating cellulosic Tissue is used. 3 · Use according to claim 1 and 2, characterized in that the polyethylene glycol has a medium molecule 5 8
lar weight of 10 to 10 has. 4. Use according to claim 3 * characterized in that that the polyethylene glycol has an average molecular weight of 10 to 10. 5. Use according to one of claims 1 to 4, characterized in that the cellulose-containing fabric
is poorly absorbent. 6. Use according to one of claims 2 to 5, there- . characterized in that the impregnation liquor, dyes, Contains mold protection, flame retardants or water repellants. 909823/1049 'ί * VIjNSi s r Τ! ■ " - 2.5 - 7. Use according to one of claims 2 to 6, characterized characterized in that the impregnation liquor 0.1 to Contains 2 g / l polyethylene glycol. 8. Use according to claim 7, characterized in that the impregnation liquor contains 0.25 to 1 g / l of polyethylene glycol. 9 · Use according to one of claims 1 to 8, characterized characterized in that it is impregnated in a padder. 909823/1049