WO2011104066A1 - Benzophenone-containing dispersions for textile applications - Google Patents

Abstract

The invention relates to a composition which is present in the form of an aqueous dispersion of benzophenone-containing (meth)acrylate polymers. The invention relates to the use of said aqueous dispersions for textile applications, in particular for a non-woven bonding process.

Description

 Benzophenone-containing dispersions for textile applications

Field of the invention

The present invention describes a composition herein as an aqueous dispersion of benzophenone-containing (meth) acrylate polymers. The invention relates to the use of the described aqueous dispersions for textile applications, in particular for nonwoven bonding.

State of the art

For textile applications, especially for the

Nonwoven bonding often becomes thermosetting

Dispersions used. A chemical basis is the combination of methacrylamide, methacrylic acid and N-methylolmethacrylamide as a crosslinking system

The corresponding systems also exist

Acrylate base. The nonwoven fabric impregnated with such a dispersion is thermally treated (140 ° C.). In this case, a covalent crosslinking occurs. A disadvantage of this

Crosslinking system is the release of formaldehyde during crosslinking. In addition, experience has shown that these dispersions are not very shear-stable, which can lead to problems with the application to the textiles.

Polyacrylate dispersions are known in principle. For quite some time one uses such dispersions for Coating various substrates to seal and protect them. One exemplary application relates to the sealing of mineral substrates such as bricks, concretes, concrete roof tiles, conventional bricks, and the like (see, for example, U.S. Patent 4,511,699 and British Patent 1,411,268).

From EP 0 355 028 Al a method is known in which substrates on their surfaces with aqueous

Polyacrylatdispersionen coated and the coatings are then dried at elevated temperature. Here, a mixture is used for the coating of A) a 20 to 65 wt .-%, a

 Minimum film-forming temperature of -30 to +30 ° C having aqueous dispersion of a copolymer of a) 20 to 70% of its weight of (meth) acrylic esters of 3 to 20 carbon atoms containing a tertiary CH group alkanols, b) 30 to 60 % of its weight of styrene, alpha-methylstyrene, methyl methacrylate, (meth) acrylic acid-tert. butyl ester and / or

 (Meth) acrylonitrile and c) from 0.2 to 7% of its weight of 3 to 5 C atoms send mono- and / or dicarboxylic acids and / or their optionally substituted on the N-atom by an alkyl group containing 1 to 4 carbon atoms Amides and B) 0.1 to 5 wt .-%, based on the amount of in the

Component (A) contained copolymer, a

aromatic ketone.

The mixture is then exposed to ultraviolet light for curing before or after drying.

The aromatic ketone according to EP 0 355 028 A1, inter alia, for example, benzophenone and

Benzophenone derivatives such as 3, 3 '-dimethyl-4-methoxybenzophenone, 3, - and 4-hydroxybenzophenone, benzophenone-2-carboxylic acid, benzophenone-3-carboxylic acid, benzophenone-4-carboxylic acid and the like, and 2-, 3- and 4-phenylbenzophenone, 2-, 3- and 4-alkylbenzophenones with 1 to ten C atoms in the alkyl radicals, such as 2-, 3- and 4-methylbenzophenone, 2-, 3-, 4-nonylbenzophenone, dialkylbenzophenones and also olefinically unsaturated and water-soluble benzophenone derivatives in question.

Although the coatings of EP 0 355 028 Al already show a satisfactory durability of the coating, the coatings are nevertheless still

in need of improvement, in particular with regard to

Properties such as resistance to, inter alia, against

Weathering, against solvents, against organic and inorganic chemicals, and in terms of properties such as hardness of the coating, drying rate of

Coating and the like more. Based on these

Properties are the described dispersions for

Solidification of textiles, especially unsuitable for nonwovens.

Benzophenone and low molecular weight benzophenone derivatives are common photoinitiators. Upon irradiation, si form radicals which cause polymerization or crosslinking

ethylenically unsaturated monomers can cause.

Carlini et al. reported in Polymer, 1983, Vol. 24, May, page 599 ff. of polymers which are in the side chain

Containing benzophenone chromophores, and their use as highly effective photoinitiators. Copolymers of acryloxybenzophenone with menthyl acrylate, methyl acrylate or 1-acryloxy-2-ethoxyethane are disclosed. The described Copolymers have about 10 to 90 mol ~ 6

Acryloxybenzophenone units and are suitable for

Photoinitiation of the polymerization. An exact one

Specification of the molecular weight of the presented photoinitiators does not take place in the cited publication.

US 5,900,472 A describes copolymerizable

Benzophenone photoinitiators. Benzophenone derivatives having two to four (meth) acrylate groups are shown as well as UV-curable coatings which are obtainable by reaction of the polyvalent benzophenone derivatives with (meth) acrylate under the action of radiation. According to the US 5,900,472 A, the coatings, which are using the

polyvalent benzophenones are available, superior to the heretofore known coatings with known photoinitiators insofar as they show a reduced tendency to "bleed" (migration)

Photoinitiator to this phenomenon, which limited its application in a few ways, including the use for coating or impregnation of textiles not

belonged.

In WO 2002100912 UV-curable aqueous dispersions for coating cellulose, in particular for

Hygiene products described. The goal here is the

To improve resistance to water. On the

Coating or impregnation of textiles, this system is not transferable due to completely different material requirements and a completely different purpose of the coating. In DE 1 720 603 and in DE 1 720 605 polyvinyl acetates with copolymerized benzophen-funtkionellen acrylates for use as a textile impregnating agent described. Disadvantage of polyvinyl acetates, however, is the saponification tendency in the alkaline. Also of disadvantage are the partially crystalline character and the high glass transition temperature, which can lead to an unwanted stiffening of the fibers.

In DE 1 720 605 is additionally a dispersion with

54 wt .-% butyl acrylate, 41 wt .-% methyl methacrylate and 4.5 wt .-% of a benzophenone acrylamide disclosed. The high MMA content and the hardness of acrylamides also lead to particularly stiff chains.

task

In view of the above-mentioned and discussed

It was an object of the invention to provide novel compositions for the coating of textiles, in particular for use as a consolidator for

Nonwovens, to provide.

The composition itself should be as simple and as versatile as possible or applicable. The composition should be all technical

Comply with regulations and, above all, health as safe as possible. In this context, attention should also be paid to the VOC-freedom (no volatile organic compounds) of the composition.

In addition, the coatings should harden and / or dry as quickly as possible and as completely as possible, and the processed textiles or nonwovens should have a longer useful life. For this purpose, the best possible, that is complete and intensive crosslinking of the coating during curing should be achieved.

Further tasks which are not explicitly mentioned emerge from the overall context of the following description, claims and examples. solution

The invention relates to the use of

Benzophenone methacrylate instead of the above-described crosslinking system based on the combination of

 Methacrylamide, methacrylic acid and N-methylolmethacrylamide for coating or impregnating nonwovens and / or textiles. Such systems are not thermally crosslinked by means of UV light. The user is thus capable after the coating or impregnation of a textile surface fabric, in particular a textile or a nonwoven fabric, a formaldehyde-free crosslinking

perform. It can crosslink relatively quickly by means of UV after predrying of the dispersion on the nonwoven fabric, which additionally leads to a time saving compared to thermally curing systems.

Furthermore, the benzophenone-containing polymethacrylate dispersions according to the invention are significantly more shear-stable than the N-methylolmethacrylamide-containing systems. The results also show a good resistance to cooking and

 Tri-wash without undesirable side reactions, such as further post-curing, e.g. in the

Examination of the N-methylol-containing reference were observed to occur. Under Triwäsche is in the context of this patent, the dry cleaning with

 Understood trichlorethylene. These results are based on other chemical cleaning methods or

Dry cleaning methods, e.g. with perchlorethylene

transferable.

In particular, the objects are achieved by using an aqueous described below

Dispersion containing particularly soft, benzophenone Functional poly (meth) acrylates, for coating and / or impregnating textiles or nonwovens:

Textiles are usually flexible

Materials that are composed of a fiber composite. These may be composed of fibers or yarns and e.g. as a woven, knitted or knitted fabric. Synonymous terms for textiles in the field of

Clothing industry are cloth or cloth. As a rule, textiles consist of animal fibers such as silk, wool or horsehair; from vegetable fibers like cotton,

Bast, hemp, flax, linen fibers, jute, nettle, sisal or coconut fibers; from synthetic polymers like

Polyamides, polyesters, polyimides, polypropylene, or polyethylene; from mineral fibers like asbestos,

 Mineral wool or basalt; or mixtures of different fibers. The preparation can be done for example by means of weaving or knitting. In addition to the clothing industry, textiles can also be used, for example, in the home, furniture, construction, automotive, fire protection or technical textile industries in various other industrial sectors.

Nonwovens are textile fabrics made of individual fibers. The formulation nonwoven fabric in this

Text implies at the same time nonwovens, which are usually unconsolidated nonwovens. Also included is the widely used term nonwovens for nonwovens. The nonwovens may be both tangled and fiber oriented nonwovens. Nonwovens may be formed from mineral fibers such as glass, asbestos, mineral wool or basalt; made from animal fibers such as silk or wool; from vegetable fibers such as cotton; from modified vegetable fibers like cellulose; from synthetic polymers such as polyamides, polyesters, PVC, polypropylene, polyethylene,

Polyphenylene sulfide, polyacrylonitrile, polyimide,

Polytetrafluoroethylene, Nomex, Kevlar or polyamideimide;

or mixtures of different fibers. The preparation may be by means of spinning processes, in particular dry, wet, melt or matrix spinning, or over

 Solidification process, in particular mechanical, chemical or thermal solidification process carried out. In addition to nonwovens or nonwovens, the inventive method can also be applied to felts and / or wadding.

The dispersions of the invention comprise one or more poly (meth) acrylates which contain one or more

Compounds of the formula (I) as comonomer building blocks

exhibit. These poly (meth) acrylates are preferred

obtainable by emulsion polymerization. In detail, the inventively used

Poly (meth) acrylates together as follows: a) 0.5 to 25.0 wt .-% of at least one compound of general formula (I), preferably one

Benzophenone (meth) acrylate,

worin R¹ Wasserstoff oder Methyl, bevorzugt Methyl

wherein R ^{1 is} hydrogen or methyl, preferably methyl

means;

R ^{2 is} oxygen;

R ^{3 is} a radical of the general formula II

wherein

R, R, R are independently hydrogen or methyl, n is an integer from zero to two hundred, o and p are independently an integer from zero to two, where in the event that the sum of n and o and p Is zero, R ^{3 is} a bond;

R ^{4 is} a bond, oxygen or O-CO-O, preferably a bond;

R ^{5 is} hydrogen, halogen or a moiety having from one to twenty carbon atoms;

optionally substituted with oxygen, nitrogen and / or sulfur, wherein m is an integer from one to four; and

R ^{6 is} an aryl or heterocyclyl radical, preferably a phenyl radical; and

b) a mixture of further compounds consisting of 40.0 to 99.5% by weight of unfunctional acrylates other than a) 0 to 59.5% by weight of non-functional methacrylates other than a), and / or styrene, 0 to 5.0% by weight of acrylic acid and / or methacrylic acid and 0 to 10% by weight of acrylamides and / or methacylamides and / or acrylonitrile and / or hydroxyalkyl methacrylates, wherein the components a) and b) together 100% by weight of the

polymerizable components of the mixture.

Preferably, all of R ⁵ are hydrogen. Also preferably, p, o and n are all zero.

Particularly preferred as component a) are 0.5 to

 25% by weight of 4-methacryloylbenzophenone

 (4-Hydroxybenzophenonmethacrylat) used

Such a composition, in a manner not readily foreseeable, incorporating polymer-bound UV-curable (meth) acrylate polymers in acrylate dispersions known per se, permits the creation of

Coatings or coatings on textiles or

Nonwovens with advantageous properties.

Advantage of the system in the coating and / or

Impregnation of textile fabrics with

Compositions according to the invention also consist in that neither additional photoinitiators for UV curing be expected, is still to be expected with a migration of the UV-active part, since the UV-active substance as a copolymerized monomer in the corresponding

Coating is installed.

A very particular advantage, in particular for applications on textiles or nonwovens, is the curing without release of a low molecular weight compound, for example formaldehyde in the prior art. That's it

inventive method over the prior art in terms of ecological and toxicological aspects of great advantage.

The processing of the dispersions of the invention for the impregnation and / or coating of textiles or

Nonwovens consists of applying the aqueous dispersion to the textile fabric, then drying and an adjoining, mostly

continuous UV curing in a belt line. Preferably, in the case of a coating, between drying and UV curing is waited until the film formation of the coating is completed. This usually takes only a few seconds.

Application may be by brushing, roller coating, printing, spraying, soaking or padding,

preferably done by padding. The padding in turn consists at least of the process steps impregnation of the material (textile or nonwoven fabric) in the dispersion and squeezing on rollers.

In the processing of textiles and / or nonwovens is the inventive method with a UV curing Compared to a thermal curing according to the prior art in several ways an advantage. On the one hand, the energy consumption is significantly lower, on the other hand, the systems required for padding and subsequent curing can be planned much less space and technically less expensive. A much more protracted thermal curing naturally requires more space than a short UV curing unit.

In addition, it can be observed when using the method according to the invention that the dispersions of the invention are much less prone to coagulation, than the dispersions of the prior art. In addition, the materials show better shear stability and thus a better, potentially faster

Processability.

It is further noteworthy that the benzophenone-containing compounds present in the composition according to the invention are primarily monomers which cause UV crosslinking in dispersions, and not polymers

Photoinitiators. This represents a substantial

Difference to the known prior art.

A particularly preferred embodiment of the invention is directed to those processes in which compounds a) which correspond to the general formula (J) are used as compounds a). This is the monomer a) at least one benzophenone (meth) acrylate of the general formula (J)

wherein R ¹ and R ⁵ and m and m have the meanings already given in the formula (I). The meaning of R ¹⁰ is analogous to that of R ⁵ , which of q is analogous to that of m. It is particularly expedient to use 4-methacryloylbenzophenone as component a) to produce the polymer for the composition according to the invention.

The compounds of formulas (I) and (J) are either commercially available or are prepared by literature methods. Examples of possible methods of preparation include the transesterification of

(Meth) acrylates with the corresponding alcohols.

A particularly preferred embodiment of the invention is directed to those processes in which compounds a) which corresponding to general formula (I) are 4-methacryloylbenzophenone (4-hydroxybenzophenone methacrylate) are used. The monomer composition of the benzophenone-containing

Polymer also comprises one or more ethylenically unsaturated comonomers b) which can be copolymerized with, but different from, a). The proportion of comonomers is preferably in the range of 75.0 to 99.5 wt .-%. The components a) and b) together give 100 wt .-% of the polymerizable components of the mixture.

In particular, the comonomers b) consisted of the following constituents:

40 to 99.5 wt .-%, preferably 50 to 98 wt .-% of unfunctional acrylates which are different from a), 0 to 59, 5 wt .-%, preferably 0 to 40 wt .-% of unfunctional methacrylates, the of a) are different, and / or styrenes,

0 to 5 wt .-%, preferably 1 to 3 wt .-% of acrylic acid and / or methacrylic acid 0 to 15 wt .-%, preferably 0 to 10 wt .-%, particularly preferably 0 wt .-% of acrylamides and / or methacylamides and / or acrylonitrile and / or hydroxyalkyl methacrylates, preferably acrylonitrile.

Acrylates are understood here to mean all functionalized or nonfunctionalized acrylates which are different from a). Preference is given to non-functionalized

Alkyl acrylates. Particularly preferred are ethyl acrylate,

Propyl acrylate, butyl acrylate, ethylhexyl acrylate or

Mixtures of these acrylates. Methacrylates are here all, from a)

different, functionalized or not

understood functionalized methacrylates. Preference is given to non-functionalized methalalkyl acrylates. Particularly preferred are methyl methacrylate, ethyl methacrylate,

Propyl methacrylate, butyl methacrylate, ethylhexyl methacrylate or mixtures of these methacrylates.

Styrenes are styrene or substituted styrenes, such as. As α-methylstyrene or a-ethylstyrene, preferably unsubstituted styrene understood.

Among hydroxyalkyl (meth) acrylates are (meth) acrylates having a hydroxy group such as 3-hydroxypropyl (meth) acrylate, 3,4-dihydroxybutyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate,

 2, 5-dimethyl-1,6-hexanediol (meth) acrylate,

1, 10-decanediol (meth) acrylate understood.

The monomer composition b) is preferably such

chosen that the invention used

(Meth) acrylate polymers have a glass transition temperature less than 15 ° C, preferably less than 5 ° C and more preferably less than 0 ° C.

The dispersions used in the invention

contained polymers are generally obtained by free-radical polymerization. The usual free radical polymerization is detailed in, among others, Ullmanns' Encyclopedia of Industrial Chemistry, Sixth Edition

described. In the context of the present invention, the

 Polymerization using at least one

Polymerization initiator for the radical Polymerization started. These include, among others, the well-known in the art azo initiators or organic peroxides.

The polymers according to the invention can be obtained in bulk or else in solution, but the emulsion polymerization is preferred.

The polymerization can be carried out either in the presence or absence of a chain transfer agent. Preferably, the polymerization is carried out in the presence of a chain transfer agent or so-called regulator. When

Chain transferers can be typical, for radical

Polymerizations described species are used. Preference is given to using mercaptans. These are used in a preferred embodiment in an amount of 0.05 to 5 wt .-%, based on the total mass of components a) and b).

The molecular weight of the benzophenone (meth) acrylate-containing copolymers can vary over a wide range. In the context of the present invention, the amounts of monomers, polymerization initiator, chain transfer agent and, if appropriate, solvent are preferably chosen such that a weight average molecular weight in the range from 10 ^{3 to} 10 ⁶ g / mol, preferably in the range from 10 ⁴ to less than 10 ⁶ g / mol, expediently in the range from 2 × 10 ⁴ to less than 10 ⁶ g / mol, in particular in the range from 5 × 10 ⁴ to less than 10 ⁶ g / mol. Especially

preferred are molecular weights in the range of 10 ⁵ to 10 ⁶ g / mol. These values refer to the respective

Weight average molecular weight (Mw).

The molecular weights can be determined by known methods. Preferably, the

Gel Permeation Chromatography (GPC), also known as Size Exclusion Chromatography (SEC). It should be preferred to polymethylacrylate or

Polystyrene standards, preferably against one

Polystyrene standard can be measured. The polymerization to obtain the inventive

Polymers can be carried out at normal pressure, underpressure or overpressure. The polymerization temperature is not critical. In general, however, it is in the range of -20 ° to 200 ° C., preferably in the range of 0 ° to 180 ° C., favorably in the range of 50 ° to 180 ° C., particularly preferably in the range of 50 ° to 130 ° C. and in particular in the range of 60 ° - 120 ° C.

The compositions are particularly suitable in the form of aqueous dispersions for the production of coatings, coatings and impregnations, in particular for

Textiles or nonwovens.

The water contained in the aqueous dispersion is used in the coating of textiles or nonwovens, e.g. in terms of a quick drying no problem.

In addition, a wash after the coating of the fibers is very likely.

The optionally dried or predried

Coatings or impregnations can then be crosslinked by irradiation with UV light to give well-adhering coatings which have a high cohesion and a good peel strength at excellent

 Have aging resistance. It does not need to be irradiated under inert gas atmosphere, but you can work in the air. As a UV radiator, the usual radiators, e.g. Mercury vapor low, medium and high pressure lamps are used, the performances of e.g. 80 to 160 watts / cm. Generally, higher power lamps generally allow a faster one

Networking. In some cases, in the networking Irradiation can be removed simultaneously by the IR portion of the lamps residual solvent or water.

The coating or impregnation of textiles or nonwovens may be various application specific

Have advantages. For one thing, the

 Surface properties of the textile or nonwoven, e.g. changed in terms of moisture absorption capacity or haptics. In addition, a solidification of the textile fabric is effected. A coating can also simultaneously as a binder for pigments for

Serve coloring. Also possible is the application as

Adhesive for flocking.

Examples

The following examples and comparative examples serve to further illustrate the invention without serving to limit it in any way. On the basis of the examples it is shown above all that the im

according to the invention used dispersions, and thus the inventive method, in comparison to the prior art, at least equivalent to the

Substance properties of the final product are. In particular, the advantages in terms of apparatus based on UV crosslinking and the toxicological and ecological advantages of the present invention have already been comprehensively set out.

Preparation of the emulsion polymers

Examples 1-2

First, in a PE beaker, butyl acrylate (BA), methyl methacrylate (MMA), 4-methacryloyloxybenzophenone, methacrylic acid (MAS) (amounts of the monomers are shown in Table 1), 3.0 g of ammonium peroxodisulfate (APS), 6, 67 g of Disponil FES 32 (30% strength) and water (amount, see Table 1) were emulsified by Ultra-Turrax for 3 minutes at 4000 rpm.

In a 2L glass reactor, which can be tempered with a water bath and was equipped with a paddle stirrer, 390 g of water and 0.833 g of Disponil FES 32 (30% strength) were introduced, heated to 80 ° C and 0.75 g

Ammonium peroxodisulfate (APS), dissolved in 10 g of water. 5 minutes after the APS addition, this was the previously prepared emulsion within 240 minutes

 dosed.

After the end of the feed was stirred at 80 ° C and 1 h at 50 ° C for 1 h. It was then cooled to room temperature and the dispersion was filtered through VA mesh with 0.09 mm mesh size. After the end of the feed was neutralized with 2.2 g of 25% ammonia solution and nachstabilisiert with 42.86 g of 70% aqueous Triton X 305 solution. The

 Final neutralization was carried out with 5.8 g of 25% ammonia solution.

Table 1

The emulsion prepared from Example 1 had one

Solids content of 49.8% by weight, a pH of 7.65, a viscosity of 125 mPas and an r _N5 value of 67 nm

The emulsion prepared from Example 2 had one

Solids content of 49.7 wt .-%, a pH of 7.75, a viscosity of 159 mPas and an r _N5 value of 65 nm.

The particle radius was determined by PCS (Photon Correlation Spectroscopy), wherein the

refer to the r50 value (50% of the particles are smaller, 50% are larger). This was a Beckman Coulter N5 Submicron Particle Size Analyzer

used.

Comparative Examples 1 First, in a PE beaker, 540.0 g of butyl acrylate (BA), 410.0 g of methyl methacrylate (MMA), 50, 85 g

N-methylol methacrylamide, 10.0 g methacrylamide, 10.0 g

Methacrylic acid (MAS), 3.0 g ammonium peroxodisulfate (APS), 16.67 g Disponil FES 32 (30%) and 585.28 g water are emulsified by Ultra-Turrax at 4000 rpm for 3 minutes.

In a 2L glass reactor, which can be tempered with a water bath and equipped with a paddle stirrer, 390 g of water and 0.75 g of Disponil FES 32 (30% strength) were introduced, heated to 80 ° C and 0.75 G

Ammonium peroxodisulfate (APS), dissolved in 10 g of water. 5 minutes after the APS addition, the previously prepared emulsion was added within 240 minutes

dosed.

After the end of the feed was at 80 ° C for 1 h and at 50 ° C for 1 h

stirred. It was then cooled to room temperature and the dispersion was filtered through VA mesh with 0.09 mm mesh size. After the end of the feed was nachstabilisiert with 19.04 g of 70% aqueous Triton X 305 solution.

The emulsion prepared from Comparative Example 1 had a solids content of 49.4% by weight, a pH of 2.7, a viscosity of 62.5 mPas and an r _N5 value of 67 nm. Polyesterylies

The further investigations took place on one

Polyester fleece 70/30 PES (1.7 / 3.3 dtex) from Gebr. Röders AG. This polyester fleece has a basis weight of 50 g / m ² and has the following stabilization: pre-needled with 25 stitches / cm, 15 mm deep with needles 36 R.

sample preparation

Nonwoven material measuring 25 cm * 30 cm with sewn edge areas was used. The edge areas were sewn off to reduce deformation. The fleece was over a period of 5 min in the corresponding

Dispersion dipped, padded and dried depending on the dispersion used either in a drying oven for 5 min at 140 ° C (comparative example) or by UV irradiation (Examples 1 and 2). Before the irradiation, the samples equipped with the example dispersions were heated in a drying oven at 80 ° C. for 5 minutes. For the light-induced solidification, a UV irradiation system with linear power control and continuous goods management of the company PrintConcept using a Hg broadband radiator with the following

Characteristics used:

Maximum intensity: 365 nm Maximum power: 160 W / cm

Lamp width: 30 cm

There were duplicate measurements with two samples each

carried out . In addition, the following measurements were also performed at least in duplicate:

- Gravimetric determination of the applied binder content

(14 measurements each).

 The details of the weight gain is based on the percentage of the weight of the dry web.

- Cooking wash with gravimetric determination of

 Weight loss in quadruplicate. The sample is weighed out (ΤΊ) and dissolved in 150 mL of an aqueous solution containing 3.3 g of soap (Marseille soap) and 2.2 g

 contains calcined soda, 10 min. at 90 ° in the

 Then the tissue is rinsed once with 90 ° C and once with cold water (approx. 100 mL each) and dried for 30 min at 80 ° C. After half an hour lying at

Room temperature is balanced (T ₂ ). Of the

Weight loss is the difference between ΤΊ and T ₂ . The difference is expressed as a percentage based on the weight Ti of the treated tissue strip.

- Tri-wash with 1, 1, 2-trichlorethylene with gravimetric

Determination of weight loss in quadruplicate. The sample is weighed out (ΤΊ) and in 150 mL

 Trichlorethylene 20 min. The tissue is then rinsed in 100 ml of pure trichlorethylene and dried at 80 ° C. for 30 minutes. After half an hour lying at

Room temperature is balanced (T ₂ ). Of the

Triwash loss is the difference between ΤΊ and T ₂ . The difference is expressed as a percentage based on the weight Ti of the treated tissue strip. Tensile test with a Zweigle according to DIN EN 29073-3 with the following test conditions:

 200 mm clamping length; 50 mm wide; 5 cN bias voltage; 100 mm / min speed; 20 mm / min speed to preload;

 99% power loss

Determination of bending and compression properties

 using kawabata measurement

 with sample size 20 cm * 20 cm; The bending test was carried out with 20 cm long and 2 cm wide strips only in the longitudinal direction.

All percentages in the following tables are percentages by weight unless otherwise stated.

Table 2: Proportion of the binder on different

 Web samples

The binder content of the comparative example according to the prior art is slightly higher than the proportion of

inventive examples. However, this result is not very significant in terms of the values. Table 3: Gravimetrically determined weight change after cooking

Table 4 Gravimetrically determined weight change after tri-wash

From the results of Tables 3 and 4 shows that the weight losses in the present invention carried out nonwoven strengthening slightly higher than in the

 appropriate equipment with the dispersion of the prior art. The weight gain of the results of the

 Comparative Example in Table 3 is due to absorbed water.

Claims

claims 1. Use of an aqueous dispersion for coating and / or impregnating textiles or nonwovens, characterized in that the dispersion of one or a plurality of (meth) acrylate polymers containing one or a plurality of the compounds of general formula (I) in copolymerized form and the are obtainable by emulsion polymerization of a mixture a) 0.5 to 25.0% by weight of at least one compound of the general formula (I)

wherein R is hydrogen or methyl; R is oxygen; R is a radical of general formula II

wherein R, R, R are independently hydrogen or methyl, n is an integer from zero to two hundred, o and p are independently an integer from zero to two, where in the event that the sum of n and o and p Is zero, R ^{3 is} a bond; R ^{4 is} a bond, oxygen or O-CO-O; R ^{5 is} hydrogen, halogen or a moiety having from one to twenty carbon atoms; optionally substituted with oxygen, nitrogen and / or sulfur, where m is an integer from one to five; and R ^{6 is} an aryl or heterocyclyl radical; and b) a mixture of further compounds consisting of 40.0 to 99.5% by weight of unfunctional acrylates other than a), 0 to 59.5% by weight less functional Methacrylates which are different from a) and / or styrene, 0 to 5.0% by weight of acrylic acid and / or methacrylic acid and 0 to 10% by weight of acrylamides and / or methacrylamides and / or acrylonitrile and / or hydroxyalkyl methacrylates, wherein components a) and b) together comprise 100% by weight of polymerizable components of the mixture. 2. Use of a dispersion according to claim 1, characterized in that R ^{1 is} methyl, that R ^{2 is} oxygen, that all R ^{5 are} hydrogen, that R ^{4 is} a bond, that R ^{6 is} phenyl, and that p = o = n = zero. 3. Use of a dispersion according to claim 1, characterized in that it is in the acrylates Mischun b) ethyl acrylate, propyl acrylate, butyl acrylate or Ethylhexylacrylat or mixtures of these acrylates. 4. Use of a dispersion according to claim 1, characterized in that the methacrylates of the mixture b) are methyl methacrylate, ethyl methacrylate, Propyl methacrylate, butyl methacrylate, ethylhexyl methacrylate or mixtures of these methacrylates. 5. Use of a dispersion according to claim 1, characterized in that the (meth) acrylate polymers a Glass transition temperature less than 5 ° C. 6. Use of a dispersion according to at least one of claims 1 to 5, characterized in that the (Meth) acrylate polymers are composed of 1.0 to 10.0 wt .-% of the compound a), 50.0 to 98.0 wt .-% of acrylates, 0 to 40.0 wt .-% of methacrylates and 1.0 to 3.0% by weight of acrylic acid and / or methacrylic acid. 7. Use of a dispersion according to at least one of claims 1 to 6, characterized in that the Compound a) is 4-methacryloylbenzophenone. 8 Use of a dispersion according to one of preceding claims 1 to 7 for the coating and / or impregnation of textiles or nonwovens, characterized in that the coating and / or Impregnation by application, subsequent drying and subsequent curing by means of UV radiation he follows . 9. Use of a dispersion according to claim 8, characterized in that it is in the application to a Brushing, roller application, printing, spraying, soaking or padding, preferably by padding. 10. Textile surface fabric, characterized in that it contains a benzophenone-functional polymethacrylate coated or impregnated. 11. Textile surface fabric according to claim 10, characterized in that it is in the fabric fabric to a textile, a fabric, a cloth, a tissue, a Knitted fabric, a knitted fabric, a nonwoven, a nonwoven fabric, a cotton or a felt is.