DE3014675A1 - METHOD FOR THE DIMENSIONAL STABILIZATION OF AREA-SHAPED TEXTILE MATERIALS - Google Patents

Description

Chemische Fabrik Pfersee GmbH Augsburg, April 15, 1980

~ 3- 30U675

Patent application

Process for the dimensional stabilization of sheet-like textile materials

The invention relates to a method for dimensional stabilization of sheet-like textile material by treatment with polydiorganosiloxanes with terminal groups capable of crosslinking, in particular Hydroxyl groups from an aqueous system with a special crosslinking agent.

From GB-PS 14 34 017 (corresponds to DE-OS 23 35 751) is a method for the treatment of keratin fibers with polydiorganosiloxanes with terminal, hydroxyl groups bonded to silicon atoms and aminoalkyl-substituted ones Known alkoxysilanes. This mixture is preferably used together with another silane derivative, namely an alkyltrialkoxy- or a tetraalkoxysilane is used. The treatment is preferably carried out using an organic solvent. Such a procedure can but are often not used because the machine requirements for the execution of a solvent process are not given. Treatment from an aqueous system is practical after this process not possible because, as can be seen from GB-PS 15 27 578, even the solutions of the components in water-insoluble solvents are extremely high are sensitive to hydrolysis, even to the water vapor present in the normal air atmosphere. This turns out to be inadequate Noticeable storage stability of the products. But the stability of the equipment fleets does not meet the practical requirements either.

A similar process, but generally used for treating textile fibers, which is particularly suitable for synthetic fibers, in which the above-mentioned further silane derivative must be used, is from the GB-PS 14 85 769 became known. However, this method is also only suitable to a very limited extent for use from an aqueous system, since here too the liquors used for equipment are unstable, as in the DE-OS 27 28 597 is confirmed. After the last mentioned open

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It is possible to finish with an aqueous emulsion of an organopolysiloxane, with crosslinking with an organosiloxane with at least 3 silicon-bonded hydrogen atoms. But there is also this a curing catalyst is absolutely necessary. The finishing effects achieved thereafter, especially their Dry cleaning resistance, left to be desired.

It has now been found that with a special selection of a group of aminoalkyl-substituted alkoxyalkylsilanes, which act as crosslinking agents, surprisingly stable liquors are obtained with emulsions of diorganopolysiloxanes, the terminal groups capable of networking, in particular Contain hydroxyl groups. This makes it possible to easily mix all types of textile material with aqueous emulsions to treat mentioned siloxanes in order to give them dimensional stability.

The method according to the invention for dimensional stabilization of sheet-like textile materials by treatment with polydiorganosiloxanes with terminal silicon atoms bonded groups capable of crosslinking, in particular hydroxyl groups, the organic radicals in the polydiorganosiloxanes predominantly alkyl radicals with 1 to 3 carbon atoms, in particular Are methyl radicals, and a crosslinking agent from an aqueous system with subsequent crosslinking is characterized that the crosslinking agent used is an aminoalkyldialkoxyalkylsilane of the formula

Si (OX), (I)

its own condensates and / or its partial hydrolysates used, where R is a monovalent, made of carbon, hydrogen, Nitrogen and, if necessary, oxygen

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built aminoalkyl radical, which has at least one amino group and via a silicon-carbon bond to the silicon Atom is bonded, R 'is an alkyl radical with 1 to 4 carbon atoms, X is an alkyl radical with 2 to 4, in particular 3, carbon atoms or an alkoxyalkyl radical having 3 to 8 carbon atoms.

The organic substituents in the polydiorganosiloxanes are alkyl radicals, such as methyl, ethyl or propyl radicals. A Part of the radicals can also be aryl or phenyl radicals. The terminal groups capable of crosslinking can, for example Etherified or esterified, but especially free hydroxyl groups, its preferred are polydiorganosiloxanes terminal, silicon-bonded hydroxyl groups, predominantly contain methyl radicals as organic radicals, in particular polydimethylsiloxanes with viscosities of 4,000 to 100,000 itiPa-s.

According to a particular embodiment of the invention, you can as polydiorganosiloxanes also those are used which contain as an organo radical at least one radical consisting of carbon, Hydrogen, nitrogen and optionally oxygen is built up, contains at least one amino group and about a carbon bond to a silicon atom of the polydiorganosiloxane is bound = These aminoalkyl-substituted polydiorganopolysiloxanes are accessible, for example, by reacting polydiorganosiloxanes with terminal hydroxyl groups with aminoalkyl-dialkoxy-alkyl-silanes of the formula (I), as can be seen from DE-OS 27 28 597.

The aminoalkyl-dialkoxy-alkyl-silanes meet the general requirements formula

R.

JSi (OX) ₂ (I)

R ¹

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where R is a monovalent radical made up of carbon, hydrogen, nitrogen and optionally oxygen, which has at least one amino group and is bonded to the silicon atom via a silicon-carbon bond, R ^{1 is} an alkyl radical with 1 to 4 carbon atoms, X denote an alkyl radical with up to 4, in particular 3, carbon atoms or an alkoxyalkyl radical with 3 to 8 carbon atoms. Compounds of this type are known and can be converted into the compounds of the formula I, for example by adding alkyldichlorosilanes to allyl or methallyl chloride, subsequent alkoxylation of the silicon-bonded chlorine atoms using alcohol and finally reaction of the jjschloralkyl-dialkoxy-alkylsilane obtained with amines (see e.g. DE-AS 1 182 832). After the amine salt formed in the last stage has been separated off, the reaction products obtained can be used as crosslinking agents in the process according to the invention without further purification. Individual compounds that are accessible, for example, by this process and can be used in technical quality, include, for example:

I a) H ₂ N-CH ₂ -CH ₂ -CH ₂ -Si (CH ₃ ) (OC ₃ H ₇ ) ₂

b) H ₂ N-CH ₂ CH ₂ -NH-CH ₂ CH ₂ CH ₂ -Si (CH ₃ ) (O-nC ₃ H ₇ > ₂

c) H ₂ N-CH ₂ CH ₂ NH-CH ₂ CH (CH ₃ ) CH ₂ -Si (CH ₃ ) (O-nC ₃ H ₇ ) ₂

d) H ₂ N-CH ₂ CH ₂ -NH-CH ₂ CH (CH ₃ ) CH ₂ -Si (C ₃ H ₇ ) (O-nC ^) ₂ e) H ₂ N-CH ₂ CH ₂ -NH- CH ₂ CH ₂ CH ₂ CH ₂ -Si (C ₂ H ₅ ) (O-iC ₄ H _g ) ₂

f) H ₂ N-CH ₂ CH ₂ CH ₂ -NH-CH ₂ CH ₂ CH ₂ -Si (CH ₃ ) (O-nC ₃ H _? ) ₂

g) H ₂ N-CH ₂ CH ₂ CH ₂ CH ₂ -NH-CH ₂ CH ₂ CH ₂ -Si (CH ₃₎ (O-nC ₄ H _{9) 2}

h) H ₂ N-CH ₂ CH ₂ -NH-CH ₂ CH ₂ -NH-CH ₂ CH ₂ CH ₂ -Si (CH ₃ ) (0 ^ C ₃ H ₇ ) ₂ ·

Of these compounds, preferred are those in which R the rest

H ₂ N-CHCH-NH-R ¹ '-

denotes, where R ¹ 'is an alkylene radical having 3 or 4 carbon atoms

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is. These include the above-listed compounds I b) ι I c), I d) and I e). These compounds combine ease of manufacture and high effectiveness. The aminoalkyl-dialkoxyalkylsilanes of the formula (I) mentioned can also partially condense with themselves during their preparation or can also be present in partially hydrolyzed form. This does not affect their effectiveness. According to GB-PS 14 34 017, it is preferred to use aminoalkylalkoxy-V * j-silanes with 3 alkoxy groups, obviously because this is intended to bring about a three-dimensional crosslinking of the polydiorganopolysiloxane with the terminal hydroxyl groups, which can be expected to improve the shrinkage resistance of the treated keratin material. ' The use of the third component, namely the alkyltrisalkoxy- or tetraalkoxysilane, i.e. a silane derivative with 3 or 4 functional groups, should serve the same purpose. The same considerations also apply to the state of the art, as it emerges from GB-PS 14 85 769, but in addition, 'preferably an organometallic siloxane condensation catalyst is also used.

Even according to DE-OS 27 28 597, a three-dimensional one is mandatory Crosslinking brought about, since here the crosslinking component is an organosiloxane with at least 3 silicon-bonded Hydrogen atoms in the molecule together with a SiIoxane curing catalyst is used.

Due to the state of the art, it could not be expected, that the use of an aminoalkyl-dialkoxy-alkylsilane, thus a compound with only 2 functional groups as a crosslinking agent for RjLydiorganosiloxane with terminal Hydroxyl groups would lead to better dimensional stability of the textiles treated with them than with Use of crosslinking agents that lead to three-dimensional crosslinking. It must be surprising that the selected group of aminoalkyl-dialkoxy-alkyl-silanes,

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their own condensates and also partial hydrolysates as crosslinking agents are so effective that the use of other hardening or crosslinking components is dispensed with can be, and even has a detrimental effect in some cases. For example, with additional use of a methyl hydrogen polysiloxane only insufficient felt-free effects scored on wool. On the other hand, purely catalytically active siloxane curing catalysts, such as the known ones, can also be used organometallic compounds are used, they have no adverse influence, but are on the also dispensable on the other side.

The preparation of the emulsions of the polydlorganosiloxanes can be carried out. Use of the emulsifiers familiar to the person skilled in the art in usual way. '

For the Emuiyierung the Polydiorganosiloxane are thereby
non-ionic and cationic emulsifiers preferred because
this emulsions are obtained, which with further for
Textile finishing conventional auxiliaries, such as agents for improving the crease resistance and the catalysts required for this, the handle, the flame resistance, the hydrophobization and the like are generally compatible.

Examples of non-ionic emulsifiers are polyvinyl alcohol, the ethylene oxide reaction products of alkyl phenols, higher fatty acids, fatty alcohols and fatty acid amides
and fatty amines in question, the latter also in the form of their salts with inorganic or organic acids *.

Above all, quaternary ammonium compounds should be mentioned as cationic emulsifiers. Examples of such compounds are: cetyl or laurylbenzyldimethylammonium chloride, hexadecyl-idichlorobenzy-D-diraethylammonium chloride, octadecyloxymethyl and hexadecyloxymethylpyridinium chloride
and lauryloxymethyl-N-ß-hydroxyä ^ thylmorpholiniumchlorid.

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However, epoxy-amine condensates, as described, for example, in GB-PS 10 71 162, come as cation-active Emulsifiers into consideration. The emulsifiers can of course also be used as a mixture with one another.

It is often advisable to use the polydiorganosiloxanes beforehand, especially if they have viscosities above 5000 mPa · s to dissolve in an organic solvent. The main solvents used for this are water-insoluble such as toluene and gasoline fractions with a safe range of about 80 to 180 ° C as well chlorinated hydrocarbons into consideration. But emulsification without a solvent is also possible if, for example works according to the method of GB-PS 1 523 678.

Emulsions of the polydiorganosiloxanes mentioned are commercially available; they generally have a content of 25 to 60 Weight percent emulsified polydiorganosiloxane. But also emulsions with a higher content of emulsified polydiorganosiloxane are known and useful for the purpose of the invention. The crosslinking agents to be used according to the invention form dispersions, if appropriate in the form of their salts with water. But these are so coarsely dispersed that a sufficiently uniform distribution in the polydiorganosiloxane emulsion is not always guaranteed. This insufficient fine distribution would lead to non-uniformities in the finishing effects. Therefore, they become expedient with the help of non-ionic emulsifiers, such as those used for the production of polydiorganosiloxane emulsions are converted into stable emulsions. The emulsion of the polydiorganosiloxane is then in the liquor with the Combined emulsion of the crosslinking agent. From case to case, however, it is also possible within the scope of the invention Process used crosslinking agent in the appropriately somewhat diluted emulsion of the organopolysiloxane stir carefully.

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As already briefly mentioned, the treatment liquors can still Siloxane curing catalysts based on organometallic Connections. To be added. These are familiar to the person skilled in the art. Organozinc, titanium and preferably tin compounds are therefore only mentioned in general. These are in standard Form used.

The treatment fluids / containing the Polydiorganopolysiloxan, according to the invention to be employed cross-linking agent, optionally, the organometallic compound, and optionally other customary auxiliaries can be applied to the to behände ⁿ nde textile material in conventional manner, for example by spraying or padding. However, it is particularly efficient to apply the substances mentioned to the textile material in the extraction process. The textile material to be treated is treated in a short or long liquor and, due to its substantivity, absorbs the substances contained in the liquor until there is an equilibrium between fiber and By increasing the temperature, by adding electrolytes or pH regulators, but also by choosing the emulsifiers used to emulsify the polydiorganosiloxanes, the equilibrium can be shifted in favor of the deposition of the substances on the fiber, which for example with cationic emulsifiers.

The crosslinking agents to be used according to the invention are generally used from 0.2 to 50, in particular from 3.5 to 35 parts by weight, based on the polydiorganosiloxane.
The invention. According to the method is carried out in such a way that, depending on the requirements for the effects, about 0.2 to 4 percent by weight of polysiloxane is deposited on the treated material. The curing agent applied to the fiber material is hardened by drying and, if necessary, heating, preferably at temperatures of 80 ° C to

170 ⁰ C, although drying at 80 ° C for a

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line of crosslinking can be sufficient if the treated textile material has enough time for a post-reaction Available. This variant is mainly used for textile materials that contain or contain keratin fibers consist of such.

According to the method according to the invention, sheet-like Textile materials of all kinds are treated. These can be in the form of fleeces, woven or knitted fabrics. she can be made from fibers of natural origin or from synthetic fibers. Of course, the sheet-like Textile materials also consist of mixtures of synthetic fibers and natural fibers. From the natural ones Fibers are fibers based on cellulose, including regenerated cellulose fibers and keratin fibers, in particular To name wool.

Synthetic fibers include: fibers based on polyamide, polyacrylonitrile, polyester and polyolefin. The materials can for example also be made of crimped or twisted yarn, so that from this manufactured woven or knitted fabrics are stretchable. The term dimensional stability is to be understood that the after fabrics and knitted fabrics treated with the method according to the invention even after washing and dry-cleaning, wet and dry remain dimensionally stable. In the case of surface certificates, which from the outset have a certain extensibility, the method according to the invention improves the resilience and given a high resilience. Products made from cellulose fibers are also treated with anti-crease Synthetic resins attached, especially if the finishing is carried out using the padding process. Products, which consist predominantly of wool are made felt-free by the method according to the invention. Furthermore have the planar ones equipped according to the invention Textile materials have a very soft, specific feel

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and their sewability is improved. Examining the Woolen textiles finished according to the method according to the invention are carried out according to JWS test methods No. 185 and No. 186. These methods are used to measure relaxation and felt shrinkage. The relaxation shrinkage gives the change in shape that arises when the goods are merely wet and results from tensions that the article during was exposed to processing. The felt shrinkage is the change in shape that occurs during washing due to the influence of water, Gives warmth and movement. According to the specified test method, the goods are first provided with measuring marks and then in a liquor containing a phosphate buffer mixture and a r.ichi ionic detergent, placed without tension (Liquor ratio 1—: 15—). To also ^ a ^ eventueAl delayed Detecting relexation is then followed by a short movement the test st ^ -ke. Then the samples are rinsed, centrifuged, dried in the flat state and measured (relaxation shrinkage). Then the samples are at 40 ° C and washed, spun, dried and measured again with a liquor ratio of 1:15 without the addition of wetting agents.

The linear shrinkage is determined according to the following formulas:

% Relaxation shrinkage = *

% Felt shrinkage = (relaxation dimension) - (washing dimension) _1nn

(Relaxation measure) ^{x IUU}

% Total shrinkage «(original dimension) - (washing dimension) _1nn

(Original dimension) ^{x IU}

The area shrinkage results from the following formula:

% Area shrinkage =% B +% L-% A

% A = % B χ% L
100

B = shrinkage in width L = shrinkage in length

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In the case of low shrinkage, A can be disregarded. It should also be noted that the finished wool pattern after Allow 2 to 3 days to condense prior to testing. The exams are after a short steaming and a further resting time of 3 to 4 hours. In this way, there are fluctuations in the measurement results largely avoided.

The permanent elongation is decisive for assessing the stretchability of knitted fabrics. To be able to determine this, it is first necessary to determine the total elongation.

a) Testing of the total elongation in the dry state.

A test piece (150 χ 20 mm punched out in the elastic direction) is clamped vertically on a DuPont extensometer over a length of exactly 100 mm, then slowly with it 500 g loaded, left at this load for 5 seconds and then relieved again. The process is repeated four more times. The total length under load is then read off in mm on the scale.

Calculation:

% Total elongation _{= χ 10Q}

b) permanent elongation when dry.

The measuring section (exactly 100 mm) signed. This pattern is stretched to 80% of its total stretch and in the stretched state with the help of thumbtacks attached to a smooth, flat board. After 1 hour of stretching, the load is relieved and the test specimen for 1 hour left hanging straight down. Then the remaining total length is measured in mm.

Calculation?

% permanent elongation = ( mean total length ) - 100 «**

__ χ | _{U (} j

("Dry stretch") ^ιυυ

The crosslinking agents mentioned in the following examples

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are, unless otherwise noted, in technical quality used.

example 1

According to the method described in Example 1 of GB-PS 1 523 678, an emulsion is made from a siloxane copolymer, prepared according to Example 1 of DE-OS 27 28 597, with a viscosity of 7,000 mPa.s at 20 ^° C., using 8% by weight, based on the siloxane copolymer, of octylphenol polyglycol ether (an average of 10 moles of ethylene oxide per mole of octylphenol) as an emulsifier. This is then diluted to a content of r% polysiloxane (emulsion A).

FlOi " ι I

125 g of emulsion A are made to about twice their volume with Diluted water, after adding 2 g of 60% acetic acid, 20 g of the crosslinking agent Ic) are carefully stirred in and then made up with water filled up to a volume of 1 liter.

Fleet II

To 125 Emulsion A g after dilution with water 15 g of a 36% emulsion of a Methylwasserstoffpolysxloxans (viscosity 30 mPa-s at 20 ⁰ C) and 1 g of a 20% aqueous emulsion of dibutyltin dilaurate was added and made up to 1 liter.

These fleets 1 each pattern is a WoIl jersey fabric (300 g / m) is padded to a wet pickup of 80%, largely energized for 20 minutes at 100 ⁰ C and then heated dried for 5 minutes on 125 ⁰ C.

That which was treated with liquor I by the process according to the invention According to the method given above, the sample shows a relaxation shrinkage of only 4.6% and a felt shrinkage of 6.3%. In contrast, the relaxation shrinkage in the sample treated with liquor II is 9.2% and the felt shrinkage is 18.6%.

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.5

Analogously to Example 1 a 35% emulsion of a dimethylpolysiloxane having terminal hydroxyl groups (viscosity about 5000 mPa ^- s) is (based on organopolysiloxane) using 6% fatty acid having on average 10 ethylene oxide units bound as emulsifier (Emulsion B).

Fleet III

To 100 g of the emulsion B are diluted with water in the proportion 1: 1 and after adding 2 g of 60% acetic acid, 15 g of the crosslinking agent used in Example 1, liquor I, carefully stirred in Further dilution, 15 g of the dibutyltin dilaurate emulsion already mentioned were added and finally made up to a volume of 1 liter.

Fleet IV

Instead of the crosslinking agent used in the liquor III 15 g of a compound of the formula

H ₂ N-CH ₂ CH ₂ -NH- (CH ₃ ) -Si (OCH ₃ )

(technically pure) used.

With the liquors III and IV, as described in Example 1, the equipped with the same wool-jersey pattern

a) immediately after preparing the liquors

b) after the fleet has stood still for two hours

c) after the fleet has stood still for six hours.

The results are summarized in the following table.

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Relaxation felt 3 0 1 A 6 7

Shrinkage shrinkage

Fleet abc abc

III 3.5 3.8 3.6 4.2 5.1 5.0

IV 5.5 4.5 5.5 7.3 12.7 12.6

From this it is clear that the effectiveness of the fleet with the Crosslinking agent according to the invention (liquor III) also for 6 hours still flawless. remains, while the effectiveness of the fleet IV already after 2 hours it clearly decreases, which is noticeable in a clear deterioration in the felt shrinkage values.

Example 3

According to the method described in Example 5 of GB-PS 1,440,356 a 35% emulsion of a dimethylpolysiloxane with terminal hydroxyl groups (Viscosity 120,000 mPa · s at 20 C) using 20%, based on polysiloxane, of an ethoxylated alkylamine with an average 16 carbon atoms in the alkyl radical and an average of 10 moles of ethylene oxide units per mole of fatty amine, in the form of the hydrochloride (Emulsion C).

Fleet V

According to the information for liquor III, the emulsion is used C (instead of emulsion B) an equipment liquor was prepared.

With this fleet, 2 samples of the same wool jersey fabric,

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Equipped as described in Example 1.

One sample (sample A) is dried at 100 ° C. for only 15 minutes and then left for 4 days; the other sample (sample B) is condensed for 5 minutes at 125 ° C. following drying. In addition, both samples are chemically cleaned three times with perchlorethylene (without detergent enhancer) (sample AR or BR). Then the relaxation and felt shrinkage are determined. The results are summarized in the following table.

Pattern A AR B BR

Relaxation 2.5 4.5 3.5 3.0

Felt- 3.5 7.2 3.0 7.7

shrinkage

This shows that drying is necessary for complete crosslinking of the treated sample is sufficient if it is then left for a sufficient period of time for a subsequent reaction.

Example 4

Following the procedure described in Example 1 of GB-PS 1,523,678 method is prepared from a dimethylpolysiloxane having terminal hydroxyl groups (viscosity 5000 mPa * s at 20 ⁰ C) with 9% of a cationic emulsifier (araliphatic quaternary ammonium compound), based on organopolysiloxane , an emulsion is produced which is adjusted to a content of 27% of organopolysiloxane (emulsion D). With this emulsion textile materials made of synthetic fibers, namely a polyacrylonitrile knitted fabric with a square meter weight of

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150 g and a polyacrylonitrile knitted fabric with a square meter weight of 18O g treated according to the exhaust process.

4% of emulsion D, based on the weight of the textile material to be treated, are diluted with water and add 0.4% (based on the weight of the textile material) of the crosslinking agent used in Example 1, Pasted with a fatty acid polyglycol ester with 10 ethylene oxide units (5% based on crosslinking agent) added with stirring. After adding of 0.4% (based on the weight of the textile material) of the same in Example 1 used dibutyltin dilaurate emulsion, the liquor is adjusted to a pH of 7.5.

The exhaust process is carried out at a ⁷ Lotte ratio of 1: 25 carried out with the t-τvacrylnitril product at 40 C. After just 30 minutes, the otto is clear, ie the siloxane and the crosslinking agent are completely absorbed onto the goods. The final pH of the liquor is 8.6.

After spun dry ngslosem ^ C is heated for 10 minutes at 120 ^0th

The stretch test gives the permanent elongation a value of 5.5%. This value is not affected by washing it three times at 40 ° C or by cleaning it three times with perchlorethylene.

The same procedure is used for polyester goods. However, here the ^{liquor temperature is 20 °} C. Here, too, the liquor is clear after 30 minutes.

The stretch test gives a value for the permanent elongation of 1.5%, which is also washable and dry-cleaning resistant.

Example 5

With the emulsion described in example 1, the wool jersey fabric (300 g / m ² ) is treated at 20 ° C. in the exhaust process according to the information in example 4. The crosslinking agent I d) was used for crosslinking in an amount of 0.6%, based on the weight of the goods.

The fleet was also exhausted after half an hour. The sample was heated to 100 ° C. for 10 minutes and then to it for 2 minutes

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Heated at 140 ° C.

The jersey fabric is extremely shrink-free and has lost none of its elasticity.

Example 6

A 35% emulsion, prepared according to Example 5 of GB-PS 1,440,356 is used to finish a polyester / rayon fabric (50:50; m weight 350g) used in the exhaust process.

5% of the emulsion and 0.6% of the crosslinking agent I e) are each based on the weight of the goods.

The result is a smooth cloth with very good resilience

Example 7

For finishing a cotton stretch article after the exhaust process the emulsion of Example 1 is used. Of this 5%, of the crosslinking agent I b) 0.6%, in each case based on the weight of the goods, used. At an initial pH of 5.5 and at a temperature of 20 ° C., the liquor is drawn out after about 40 minutes.

The stretch article is dried largely without tension and during Condensed at 140 ° C. for 5 minutes.

The article has a very pleasant, soft handle. Its resilience is very good.

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Claims (1)

Claims 1 / Method for dimensional stabilization of sheet-like textile materials by treatment with polydiorganosiloxanes with terminal, bonded to silicon atoms capable of crosslinking Groups, especially hydroxyl groups, the organic radicals in the Polydiorganosiloxanes are predominantly alkyl radicals with 1 to 3 carbon atoms, in particular methyl radicals, and a crosslinking agent aqueous system with subsequent crosslinking, characterized in that the crosslinking agent used is an aminoalkyl-dialkoxy-alkylsilane formula Si (OX) ₂ (I) R ¹ its own condensates and / or its partial hydrolysates are used, where R is a monovalent aminoalkyl radical made up of carbon, hydrogen, nitrogen and optionally oxygen, which has at least one amino group and is bonded to the silicon atom via a silicon-carbon bond, R ^{1 is} an alkyl radical with 1 to 4 carbon atoms, X is an alkyl radical with 2 to 4, in particular 3, carbon atoms or an alkoxyalkyl radical with 3 to 8 carbon atoms. 2ο Method according to claim 1, characterized in that as Polydiorganosiloxanes those are used which contain as an organo radical at least one radical consisting of carbon, hydrogen, Nitrogen and optionally oxygen is built up, contains at least one amino group and via a carbon bond to a Silicon atom of the polydiorganosiloxane is bonded. 3. The method according to claims 1 and 2, characterized in that 130044/0050 that the crosslinking agent used is one in which the aminoalkyl radical of the composition H ₂ N-CH ₂ CH ₂ -NH-R "- corresponds, where R ^{lf is} an alkylene radical having 3 or 4 carbon atoms. 4. The method according to claims 1 to 3> characterized in that that the sheet-like textile materials at least partly consist of keratin fibers. 5. The method according to claims 1 to 4, characterized in that that the sheet-like textile materials at least partly consist of synthetic fibers. 6. The method according to claims 1 to 5, characterized in that that the sheet-like textile materials after the exhaust process be treated. 130044/0050