EP2029370A1

EP2029370A1 - Base layer for increasing the liquid absorption capacity of a multi-layered material

Info

Publication number: EP2029370A1
Application number: EP07720199A
Authority: EP
Inventors: François VARESCON; Philipp Schuler
Original assignee: Celfa AG
Current assignee: Celfa AG
Priority date: 2006-06-22
Filing date: 2007-06-19
Publication date: 2009-03-04
Also published as: WO2007147277A1; EP1870250A1

Abstract

The invention relates to a composition for a paint receiving material, used particularly as a base layer in a multi-layer material, comprising (i) at least 50 wt. % gelatine, and optionally, the difference to obtain 100 wt. % of another hydophilic binding agent, (ii) at least one cross-linker of formula (I) and/or formula (II), wherein X, Y and Z represent, independently from each other, hydrogen, alkyl, phenyl, benzyl, carboxyl, alkoxy, amido, amino, carbonyl, alkoxycarbonylamino, halogenid or -OM, wherein M is an alkali metal and R1, R2, R3 represent, independently from each other alkyl, phenyl, benzyl, carboxyl, carbonyl, amido, amino or alkoxycarbonylamino, (iii) water and (iv) at least one solution that contains hydroxyl groups.

Description

Base layer for increasing the liquid absorption capacity of a multilayer material.

The present invention relates to a composition which is suitable for being applied in layer form to a support, in particular paper, foil or textiles. Such a composition, applied in a layered form and dried, is characterized by a high liquid absorption capacity and is especially suitable for use as a base layer in a multilayer material. Furthermore, the invention relates to multilayer materials containing this composition.

Compositions for swellable absorption layers based on binders, such as gelatin,

Polyvinyl alcohol and polyvinylpyrrolidone, for receiving water-based paint liquids are known and e.g. in EP 1 060 901 A2. Such recording layers show high gloss and high Farbflüssigkeitsaufnahmekapa- ability. However, they have the disadvantage that the dyes are often distributed irregularly on the surface of the layer, which leads to fluctuations in the color density, referred to as Beading. Another disadvantage is the long drying time of fresh prints, e.g. with stacking pressure leads to ink transfer to the back of the overlying sheet. Further, images applied to such materials show high susceptibility to color bleed due to water access into the layer. These disadvantages are due to the swellable systems and their physical behavior.

Also known are compositions for porous skin layers that are filled with traditional inorganic and / or organic fillers and / or pigments. These layers have a solids application of over 35-45 g / m ² , a good water resistance compared to swellable systems and a high paint liquid absorption capacity, which short drying times of solvent-based paints applied thereon. Such layers, however, show poor dimensional stability (curl, cockling), which, when sheets are used with such a layer in indented pushers, can lead to problems in feeding the sheets into such printing devices. Another problem is the tendency of such compositions to form cracked surface structures as a result of drying in the production of the coated material. By reducing the solid job from 30 to 25 g / m ^2, the aforementioned problems can reduce or even eliminate, but the layer is to the needs of many print devices in terms of ink receptivity and drying time len too thin to fulfill. Another disadvantage of such porous systems is their lower gloss value, which is determined by the pore size of the layer. Such compositions are therefore only suitable for dull surfaces.

Also known are compositions which are aimed at increasing the porosity of the layer.

Corresponding compositions are disclosed in EP 1 295 923 B1. These contribute greatly to rapid drying and high gloss, but the resulting cohesion of the layer is often weak to poor. Alternatively, a multilayer system has been proposed with a structure comprising at least one solvent-absorbing layer (swellable layer) and above this layer at least one immediately drying ink-fixing layer (porous receiving layer). Such a structure allows an increase in the liquid absorption capacity, but cracks are formed on the surface of the porous layer due to insufficient crosslinking of the swellable layer. Complete elimination of the cracks can be achieved by higher crosslinking of the swellable layer using glutaric dialdehyde or formaldehyde, but at the expense of the liquid uptake capacity of the multilayer system, which decreases markedly is, and increase the solids application to about 35 -45 g / m ^. A disadvantage also proved the aging properties, since the liquid absorption capacity decreases over time.

The object of the invention was therefore to provide a composition which is suitable for a base layer in a multilayer material, and which - applied in layer form and dried - characterized by

- a high liquid absorption capacity

- a high-gloss surface (with non-transparent carriers)

- a slight haze (with transparent carriers) and - a low optical density.

In combination with a highly porous cover layer, the base layer should permit very short drying times and rapid drawing in of a liquid applied to the cover layer from the surface into the base layer at a low overall layer thickness.

In particular, this basic layer should also ensure good processability on printing devices.

This object is achieved by the color receiving material according to claim 1. Specific embodiments are to be taken from the dependent claims and the description, further aspects can be taken from the independent claims and the description.

In the context of the present invention, general, preferred and particularly preferred definitions and ranges can be combined as desired. Furthermore, individual definitions can be omitted. Surprisingly, it has been found that a composition comprising, ie containing or consisting of

(I) at least 50 wt .-% gelatin, and optionally the difference to 100 wt .-% of another hydrophilic material selected from one or more binder (s) having hydroxyl groups and / or carboxyl groups and / or amino groups and / or ester groups and / or keto groups and / or amido groups in side chains, (ii) at least one crosslinker of the formula

wherein

X, Y, and Z independently of one another hydrogen, an alkyl radical, a phenyl radical, a benzyl radical, a carboxyl group, an alkoxy group, an amido group, an amino group, a carbonyl group, an alkoxycarbonylamino group (-NH-COOR, with R, for example Methyl, n-butyl), a halide (especially Cl, Br), or -OM, wherein M is an alkali metal, when X = Y = Cl or Br and Z = OM, in particular Na or K, and / or at least one crosslinker of the formula (II)

(Ii: wherein

X, Y, and Z independently of one another are hydrogen, an alkyl radical, a phenyl radical, a benzyl radical, a carboxyl group, an alkoxy group, a

Amido group, an amino group, a carbonyl group, an alkoxycarbonylamino group (-NH-COOR, with R eg methyl, n-butyl), a halide (especially Cl, Br), or -OM, wherein M is an alkali metal, in particular Na or K. , and in what

R 1, R 2, R 3 independently of one another are an alkyl radical, a phenyl radical, a benzyl radical, a carboxyl group, a carbonyl group, an amido group, an amino group or an alkoxycarbonylamino group

(iii) water and

(iv) at least one solvent which

Contains hydroxyl groups, has particularly positive properties and one or more of the above-mentioned. Solves problems.

Ver.netzer

Preferred crosslinkers of the formula (I) or (II) are those in which R 1, R 2, R 3 independently of one another are an alkyl radical, a phenyl radical, a benzyl radical, a carboxyl group or a carbonyl group.

Preferred crosslinkers of formula (I) are those with X = Y = Cl or Br and Z = ONa and / or OK, and especially preferred is a crosslinker of formula (I) with X = Y = Cl and Z = ONa. Preferred crosslinking agents of formula (II) are those with X = Y = Z = H and R1 = R2 = R3 = -CO-C (CH ₃₎ = CH ₂ and X = Y = Z = H and R1 = R2 = R3 = -CO-CH = CH ₂ , more preferably X = Y = Z = H and R ₁ = R ₂ = R ₃ = -CO-CH = CH ₂ .

With the preferred crosslinkers, the triazines of the formula (I) and (II), particularly good results have been achieved. The compositions according to the invention contain the crosslinkers in an amount of about 0.1 to 400 mmol / 100 g gelatin, preferably 1.0 to 200 mmol / 100 g gelatin, especially preferably 4.0 to 100 mmol / 100 g gelatin, respectively. 0.04 to 160 mmol / reactive group of the hydrophilic binder, preferably 0.4 to 80 mmol / reactive group and especially preferably 1.8 to 40 mmol / reactive group. From the crosslinker must be at least 80 mol% of inventive crosslinker of the formula (I) and / or (II), resp. a maximum of 20% by mol, based on the total amount of crosslinking agents, of other crosslinkers may be present.

Solvent It is within the scope of the present invention to add to the compositions (in particular the crosslinkers according to the formulas (I) and / or (II)) a solvent which contains hydroxyl groups. Suitable solvents are known in the art and can be determined by simple experiments. Solvents selected from the group comprising C 1 -C 4 -alcohols, glycols having a boiling point <220 ° C. and glycol ethers having boiling points <220 ° C. have proved to be advantageous. It can be used individual solvents or mixtures of different solvents. Without being bound by theory, it is believed that the solvents serve to control the crosslinking reaction. After the basecoat has been prepared, solvent can be completely or partially removed. If a transparent carrier is used, the

Addition of solvents in the base layer that haze of the porous cover layer is greatly reduced. When an opaque carrier is used, the addition of solvents in the base layer causes the gloss of the porous cover layer to be greatly improved.

Preferred solvents are mixtures of alcohol and glycol and / or glycol ethers, in particular Mixtures of n-propanol and / or isopropanol with glycol, such as propylene glycol or glycol ethers, such as Dowanol DPM (available from Dow Chemicals). Another preferred solvent is propylene glycol. The ratio of water to solvent

(Alcohol, glycol and glycol ether) is usually in the range of 40: 1 to 1: 1, preferably in the range of 8: 1 to 3: 2, more preferably in the range of 6: 1 to 2: 1. When using solvent mixtures, the ratio of alcohol to glycol and / or glycol ether is usually in the range of 8: 1 to 1: 2, preferably in the range of 6: 1 to 1: 1, more preferably in the range of 4: 1 to 2: 1.

gelatin

In the context of the present invention gelatin is understood as meaning unmodified gelatin, but also modified gelatin selected from the group comprising acetylated gelatin, phthalated gelatin, oxidized gelatin and mixtures thereof. Further hydrophilic binders are, for example, chitosan, polyalkylene oxides, casein, polyvinyl alcohols, partially esterified polyvinyl alcohols, vinyl alcohol copolymers, sulphonated polyesters, partially hydrolyzed polyvinyl acetate (contains at least 50% of vinyl alcohol groups, preferably at least 80%), polyacrylic acid, polyvinylpyrrolidone, poly (sodium styrenesulfonate), poly (2-acrylamide-2-methanesulfonic acid), polyacrylamide and mixtures thereof. Copolymers, composed of monomers of the above-mentioned polymers and copolymers of such monomers with hydrophobic monomers are also usable, provided they have sufficient hydrophilicity, respectively. Have solubility in water. Typically, the Lδslichkeit of the gelatin in water at 60 ⁰ C of 5-60 g of gelatin per 100 grams of water, preferably 20-60 g of gelatin per 100 g of water, especially preferably 40-60 g of gelatin per 100 g of water, and the solubility of the binder at 6O ⁰ C at least 10 g of binder per 100 g of water, preferably at least 20 g of binder per 100 g of water.

Preferred hydrophilic material is gelatin resp. a binder containing exclusively unmodified gelatin composition of the base layer. Preferred gelatin is deionized, low-viscosity gelatin, in particular gelatin having a viscosity (10.0 wt .-% in water at 60 ⁰ C) of 1 to 100 mPas, an isoelectric point IEP of 3.0 to 11 and a pH of 3.5 to 8.0. Preferably, the gelatin has a viscosity (10.0 wt .-% in water at 60 ⁰ C) of 1 to 70 mPas, an isoelectric point (IEP) of 4.0 to 10 and a pH of 4.0 to 7.0. More preferably, the gelatin has a viscosity (10.0% by weight in water at 60 ^° C.) of 1 to 50 mPas, an isoelectric point (IEP) of 5.0 to 9.5 and a pH of 4.5 to 6.0.

The gelatin preferably constitutes at least 70% by weight of the total binder, more preferably about 100% by weight.

other ingredients

In addition, further constituents may be present in the composition according to the invention. These are especially selected from polymers such as latex and / or polyurethane (PUR), wetting agents, dyes, fixatives, other crosslinking agents, organic pigments, inorganic pigments, mordants, stabilizers, eg NaOH, KOH, and any combinations of these further ingredients. Normally, compositions according to the invention contain solids, in particular binders and optionally pigments, in total amounts of about 1 to 30% by weight, preferably 3 to 15% by weight, especially preferably 5 to 12% by weight, and water and optionally solvent in one Amount of 99-70 wt .-%, preferably 97-85 wt%, and especially preferably 5-12 wt .-% such that the total solids and solvent 100 wt .-% result. topcoat

Preferably, a base layer according to the invention is used together with an immediately drying ink-fixing cover layer, in particular a porous Aufnähmeschicht, resulting in an overall significantly increased liquid absorption capacity compared with known layer structures, where very high solids orders are necessary. A preferred overcoat is disclosed in EP 1 295 923.

In particular, a highly porous layer, as described in European Patent No. EP 1 295 923 B1, is suitable as cover layer. In combination with the cover layer described, in comparison with those base layers in which other crosslinker classes are used, at significantly lower overall layer thicknesses or with a significantly smaller total application quantity on the support, respectively. with lower total solids on the carrier, achieve very short drying times of the liquids applied to such layers. In addition, the quality of the coating in terms of gloss and optical density can be improved and significantly reduce cracked surface structures as a result of the layer production. Ink receiving materials, the at least one inventive

Base layer and a support are included in this invention, but the simultaneous presence of a cover layer is preferred.

In a preferred cover layer applied to the base layer according to the invention, the

Ratios of filler to binder are varied from 20: 1 to 1: 1, in particular from 15: 1 to 1: 1, the glycol ether is preferably propylene glycol, the ratio of solvent to propylene glycol is 15: 1 to 3: 2 and the filler contains at least 80% of alumina hydroxide monohydrate with boehmite structure. The present invention thus solves problems associated with the high order quantity previously required. Presumably, this is done by the fact that the base layer despite high degree of crosslinking has a high swelling capacity and this without causing strong stresses within the disposed immediately above ink-fixing layer. The crosslinking reaction is controlled and controlled by controlled drying of the base coat. This can be done for example in a drying channel at temperatures in the range of 50 ⁰ C to 200 ⁰ C for 1 to 4 minutes. The invention thus also relates to a process for the preparation / application of base layers for the production of multilayer materials.

multilayer materials

Furthermore, the invention relates to a multilayer material, in particular a Farbaufzeichnungsmateri- al, comprising i) a carrier; ii) at least one base layer containing or consisting of a composition as described above; iii) one or more, preferably one, cover layer. Suitable carriers are known in the art and include the carriers described above. Suitable cover layers are known to the person skilled in the art; particularly suitable are porous cover layers, e.g. those according to EP1295923 B1, the content of which is incorporated by reference explicitly into the present disclosure.

The invention thus relates in particular to the field of recording layers for colored liquids with increased requirements not only in the inkjet printer in the private sector but also in the context of print image recording methods (eg offset printing, gravure printing, letterpress printing, ink jet printing, electrophotography with liquid toner or dry toner) Application come. Such recording layers bearing materials can z. B. can be used as masks in the production of offset printing or screen printing stencils.

The aim of a print is to adapt the image quality of the printout to the level of silver salt photography. High demands are placed on the recording materials used. These include, for example, high resolution, high color density of the image produced, no color bleeding, very short drying times of the dye liquid, light stability, water resistance, brilliance, dimensional stability (flatness), gloss, transparency and low optical density.

In order to obtain such properties, it is necessary to produce a receiving layer with a high color liquid absorption. According to the invention, it has now been found that when applying a base layer according to the invention between a substrate (support) and a cover layer, a very high ink absorption can be achieved. The high color liquid absorption improves the resolution because of the reduced color gradient and the rapid penetration of the colored liquid into the layer. Combined with a microporous topcoat results in a very high ink liquid absorption capacity. By setting a desired ink liquid absorption capacity, the application amount of the base and cover layer can be optimized for the respective purpose.

With a crosslinker amount of 5 mmol / 100 g to 100 mmol / 100 g of hydrophilic material (gelatin and other hydrophilic binders) can be with a

Application amount per m ^ of about 3g to about 15g, preferably from 3g to 10g of the base layer in combination with a porous cover layer (order amount per m ^ 5g to 25g, preferably 10g to 20g) same color liquid receiving capacity obtained, as with conventional layers whose application rate is above 35 g / m 2 (eg Agfa Selectjet or Sihl GA Pre Press Spirit) as carrier All materials known to those skilled in the art, such as plastic films (eg of PVC, PP, polyesters such as PET), metal foils, papers, plastic nonwovens, natural fiber nonwovens, fabrics and multilayer materials of layers of the same or different materials are suitable. The base layer can be applied to the support directly or after surface treatment by means of a primer. Carriers may be transparent, partially transparent or non-transparent. In addition to the high Farbflüssigkeitsaufnahme assets shows the base layer a good aging resistance in terms of eg the Farbflüssigkeitsaufnahme- assets.

Furthermore, it is also within the scope of the invention to provide a color receiving material with more than one color liquid absorption layer.

The invention is explained in more detail by the following examples. These examples are merely specific embodiments and are not intended to limit the invention in any way.

As support material for the examples described below, a coated paper or a film was used. The following for gelatin (20%) mentioned

Parts by weight refer to 20% gelatin in water.

The term "propanol" applies to both isopropanol and n-propanol, with the same properties being obtained for both, all of which were carried out with a topcoat of uniform composition, with or without basecoat.

Composition of the topcoat for all examples:

A1O (OH) -H2O (20%) D 100 parts by weight polyvinyl alcohol ²⁾ 25 parts by weight Zonyl FSN ³⁾ 0.4 parts by weight

Propylene glycol ⁴ ) 20 parts by weight

¹ ^ AlO (OH) -H 2 O (20%), boehmite structure (20% dispersion in water)

2) High molecular weight polyvinyl alcohol (8% in water) 2 ⁾ Zonyl FSN is a wetting agent available from Dupont de Nemours

4) Dowanol DPM gives the same results as propylene glycol

Composition of the base layer

Example 1 (Comparison 1)

Gelatin (20%) 100 parts by weight

Zonyl FSN 0.6 parts by weight

Water 71.6 parts by weight

Propylene glycol 12 parts by weight Propanol 36 parts by weight

Example 2 (Comparison 2)

Gelatin (20%) 100 parts by weight Zonyl FSN 0.6 parts by weight

Water 78.6 parts by weight

Propylene glycol 19.8 parts by weight

Propanol 13.2 parts by weight

Xama 7 (33% in water) 10.8 parts by weight

Xama 7 (33% in water) is a crosslinker available from Flevo Chemie

Example 3 (Comparison 3)

Gelatin (20%) 100 parts by weight Zonyl FSN 0.6 parts by weight water 60 parts by weight

Propylene glycol 12 parts by weight Propanol 36 parts by weight Formaldehyde (8%) 3.2 parts by weight

Example 4 (Inventive)

Gelatin (20%) 100 parts by weight Zonyl FSN 0.6 parts by weight water 51.6 parts by weight

Propylene glycol 12 parts by weight Propanol 36 parts by weight

Triazine, sodium salt (8%) 20 parts by weight

Example 5 (according to the invention)

Gelatin (20%) 100 parts by weight

Zonyl FSN 0.6 parts by weight

Water 100 parts by weight

Propylene glycol 12 parts by weight

Propanol 36 parts by weight

1,3,5-triacryloyl -

Hexahydrotriazine (12%) 20 parts by weight

Example 6 (Comparison 4)

Without a base layer

Example 7 (Comparison 5)

Gelatin (20%) 100 parts by weight Zonyl FSN 0.6 parts by weight water 51.6 parts by weight Propanol 36 parts by weight Triazine, sodium salt (8%) 20 parts by weight

On a support, the above base layer was applied by dipping in an amount corresponding to a Festoffmenge of 10 g / m ^. The layer was then dried in the drying channel at a set temperature profile between 50 ⁰ C - 150 ⁰ C within 2 minutes. Following the same procedure, the composition of the topcoat was applied to the basecoat in an amount corresponding to a solids level of about 20 g / m 2.

Performed subbookings

In the following experiments, an HP 5000 HP ink jet printer with commercially available UV inks was used as a test device. An image with different fields in black (total of cyan, magenta, yellow, black = CMYK), black (CMY), green (CY), cyan (C), blue (CM), magenta (M), red ( MY) and black (K) and with different graded amounts of color (from 2% to 100%) was printed on the pattern prepared according to Examples 1-7.

The layer application on each sample was determined gravimetrically by subtracting the weight of the raw carrier.

The image quality was judged from the imprinted images by the sharpness of fine

Lines was visually evaluated.

The color gradient was visually evaluated on the basis of the adjacent printed color patches. The grading was: strong = the colors mix strongly with each other medium = the colors mix little into each other = the colors do not mix with each other. The surface structure was examined on the microscope for cracking.

The drying of the samples was evaluated by the color amount field of the color CYM of the printed pattern, which was visually identified as being dry.

The optical density of the samples was determined using a density meter from Gretag-Macbeth TD 904.

The water resistance of the material was evaluated 24 hours after printing by adding a drop of water (0.3 ml) to each color patch (black, black, cyan, yellow, magenta, red, blue and green). After 1 minute, the lying water was removed with a wipe. The water resistance was rated as very good if the color fields remained untouched, i. no paint was wiped off.

The turbidity of the material was measured according to ISO 13468 with the

Device of Byk-Gardner, Hazeguard performed.

It can be clearly seen that the samples 4, 5 prepared with the crosslinker according to the invention, taking into account the criteria image quality, flow, surface structure, ink drying, water resistance, optical density and haze at a lower application rate (10 g / m ^ base layer, 20 g / m ² topcoat ) had significantly better overall properties compared to reference patterns 1-3 and 6-7.

Claims

claims

A composition for a colorant material comprising (i) at least 50% by weight of gelatin, and optionally the difference to 100% by weight of another hydrophilic material selected from one or more binder (s) having hydroxyl groups and / or carboxyl groups and / or amino groups and / or ester groups and / or keto groups and / or amido groups in side chains;

(ii) at least one crosslinker of the formula (D

wherein

X, Y, and Z are each independently of one another hydrogen, an alkyl radical, a phenyl radical, a benzyl radical, a carboxyl group, an alkoxy group, an amido group, an amino group, a carbonyl group, an alkoxycarbonylamino group (-NH-COOR), a halide

(in particular Cl, Br), or -OM in which M is an alkali metal, in particular Na or K, and / or at least one crosslinker of the formula (II)

rl

wherein

Amido group, an amino group, a carbonyl group, an alkoxycarbonylamino group (-NH-COOR), a halide (especially Cl, Br), or -OM, wherein M is an alkali metal, especially Na or K, and wherein R1, R2, R3 are independently each of them represents an alkyl group, a phenyl group, a benzyl group, a carboxyl group, a carbonyl group, an amido group, an amino group or an alkoxycarbonylamino group; (iii) water and

(iv) at least one solvent containing hydroxyl groups.

2. A composition according to claim 1, characterized in that at least one crosslinker has the formula

(I) wherein X = Y = Cl or Br and Z = ONa and / or OK.

3. Composition according to claim 1 or 2, characterized in that at least one crosslinker has the formula (I) with X = Y = Cl and Z = ONa.

4. A composition according to any of the preceding claims, characterized in that at least one cross-linking agent has the formula (II), wherein X = Y = Z = H and R1 = R2 = R3 = -CO-C (CH ₃₎ = CH ₂ or X = Y = Z = H and R 1 = R ₂ = R 3 = -CO-CH = CH ₂ •

5. A composition according to claim 4, characterized in that at least one crosslinker has the formula (II) with X = Y = Z = H and Rl = R2 = R3 = -CO-CH = CH ₂ .

6. A composition according to any one of the preceding claims, characterized in that the gelatin constitutes at least 70 wt .-%, more preferably about 100 wt .-% of the total binder.

Composition according to any one of the preceding claims, characterized in that the gelatin is unmodified gelatin and / or modified gelatin selected from the group comprising acetylated gelatin, phthalated gelatin, oxidised gelatin and mixtures thereof, and further hydrophilic binders provide solubility in water 60 ^° C. of at least 10 g of binder per 100 g of water, preferably at least 20 g of binder per 100 g of water.

8. Composition according to one of the preceding claims, characterized in that the gelatin is unmodified gelatin, in particular deionized, low-viscosity gelatin having a viscosity of 1 to 50 mPas, an isoelectric point of 5.0 to 9.5 and a pH of 4.5 to 6.0.

9. Composition according to one of the preceding claims, characterized in that the solvent is selected from the group comprising Cl-

C4-alcohols, glycols with boiling point <220 ° C, glycol ethers with boiling points <220 ° C and mixtures thereof.

10. A composition according to claim 9, character- ized in that it contains as solvent mixtures of n-propanol and / or isopropanol with propylene glycol or glycol ether.

11. A composition according to claim 9, characterized in that it contains as solvent one or more glycols having a boiling point <220 ° C.

12. A composition according to claim 9, characterized in that it contains as solvent propylene glycol.

13. Composition according to one of the preceding claims, characterized in that the

Ratio of water to solvent in the range of 10: 1 to 1: 1, preferably in the range of 8: 1 to 3: 2, more preferably in the range of 6: 1 to 2: 1.

14. A composition according to any one of the preceding claims, characterized in that the ratio of alcohol to glycol and / or glycol ether in the range of 8: 1 to 1: 2, preferably in the range of 6: 1 to 1: 1, more preferably in the range from 4: 1 to 2: 1.

15. Composition according to one of the preceding claims, characterized in that it contains further constituents selected from polymers such as latex and / or polyurethane (PUR), wetting agents, dyes, fixing agents, other crosslinking agents, organic pigments, inorganic pigments, mordants and any combination of these other ingredients.

16. A composition according to any one of the preceding claims, characterized in that they solids, in particular binders and optionally pigments, in total amounts of about 1 to 30 wt .-%, preferably 3 to 15 wt .-%, especially preferably 5-12 wt .-% and water and solvent in an amount of 99-70 wt .-%, preferably 97-85 wt .-% and especially preferably 5-12 wt .-%.

17. A composition according to any one of the preceding claims, characterized in that they crosslinker in an amount of about 0.1 to 400 mmol / 100g Gelatin, preferably 1.0 to 200 mmol / 100 g of gelatin, especially preferably 4.0 to 100 mmol / 100 g of gelatin.

18. A composition according to any one of the preceding claims, characterized in that it contains crosslinking agents in amounts of 0.04 to 160 mmol / reactive group of the hydrophilic binder, preferably 0.4 to 80 mmol / reactive group and especially preferably 1.8 to 40 mmol / reactive group.

19. A composition according to any one of the preceding claims, characterized in that the crosslinker at least 80 mol% of inventive crosslinker of the formula (I) and / or (II).

20. Use of a composition according to one of claims 1 to 19 for the production of a base layer under an instant-drying ink-fixing cover layer, said cover layer being in particular a porous receiving layer.

21. Preparation of a base layer for ink receptive layers, characterized in that a composition according to any one of claims 1 to 19 applied to a support and in a drying channel at temperatures in the range of 5O ⁰ C to 200 ⁰ C for 1 to 4 minutes treated said treatment in particular causes crosslinking and drying.

22 receiving layers for color liquids carrying materials, characterized in that they have a base layer which can be produced by the method according to claim 21.

23. Recording layers for color liquids carrying materials according to claim 22, characterized that they are suitable for applications in the context of print image recording.

24. Color-recording material containing i) a carrier ii) a base layer containing or consisting of a composition according to one of claims 1 to 19 iii) one or more, preferably one, cover layer.

25. A color recording material according to claim 24, in which one or more of the cover layers are porous.