EP2276816A1

EP2276816A1 - Radiation-curable printing ink or printing lake

Info

Publication number: EP2276816A1
Application number: EP09745549A
Authority: EP
Inventors: Martin Hauck; Wolfgang Schäfer; Roland KÜNZEL; Klaus Meyer; Norbert Kinzel
Original assignee: Marabuwerke GmbH and Co KG
Current assignee: Marabu GmbH and Co KG
Priority date: 2008-05-14
Filing date: 2009-05-13
Publication date: 2011-01-26
Also published as: JP5454812B2; WO2009138217A1; TWI460216B; EP2305758B1; TWI495693B; JP5597627B2; EP2285916A1; CN102099427A; KR101308547B1; DE102008023499A1; EP2305758A1; JP2011523603A; CN102027080A; JP2011521029A; US8840986B2; WO2009138215A1; KR101675600B1; US20110118377A1; RU2010150832A; ATE550167T1

Abstract

Printing-ink/-lacquer comprises at least one non-radiation hardenable aromatic polycarbonate, which is based on geminal disubstituted dihydroxydiphenylcycloalkane, as binding agent; and at least one radiation hardenable monomer, which is (meth)acrylate, vinyl ether, nitrogen containing compound having an ethylenically double bond, as solvent, where the polycarbonate is dissolved in the solvent and the solvent is bonded to the printing-ink/-lacquer in a chemically crosslinked form, after the hardening. Independent claims are included for: (1) a layer material, preferably with a thickness of up to 20 mm, comprising a substrate with a thickness of preferably 0.02-0.8 mm, preferably a foil from thermoplastics, and a color layer and/or a lacquer layer with a thickness of 3-50 mu m, preferably from the printing-ink/-lacquer; and (2) a process for the preparation of the layer material comprising coating the substrate, preferably a foil from the thermoplastic plastic, with the color layer and/or lacquer layer through printing, preferably silk-screen printing, and subsequently injection molding with one or more thermoplastic layer.

Description

Radiation curable printing ink or printing varnish

The present invention relates to a printing ink or a printing ink according to the preamble of the main claim and their use for various printing processes.

Printing inks based on solid resins, in particular polycarbonate, which are typically dissolved in halogen-free solvents, are known from the prior art. A printing ink of this kind, which is used in a generic manner, describes EP 0 688 839 B1, which is to be included in the present application with regard to the polycarbonate described therein as a possible form of realization of the binder belonging to the invention.

However, this ink known from the prior art is disadvantageous insofar as the solvent-containing printing inks known from the prior art tend to dry out in the sieve due to evaporation of the solvent, in particular after a certain service life without printing. This leads to the Siebverschluß and additional cleaning is necessary. In the worst case, this makes the sieve unusable. Another disadvantage of this known from the prior art technology is that the drying of the ink must be done by means of hot air in the drying duct or oven; This leads to the fact that the processing is extended by the time required for drying and thus can not be optimally optimized. In addition, the IR dryers used for heat drying result in increased space and energy requirements, which results in an increase in costs.

Also known from the prior art is a radiation-curable resin, which reacts with reactive, likewise UV-curable mono- meren, is provided. The associated GB 2 370 279 A describes a radiation-curing polyurethane acrylate with Polycarbo- natbestandteil in the chemical structure, which, however, has disadvantages in the processability. In particular, when printing on polycarbonate substrates, the problem of poor adhesion in the so-called Hinterspritz- processes, ie in the processing method, in which then a printed by means of the ink polycarbonate sheet on the printing side is back-injected with a thermoplastic material. Due to the fact that the color is like a sandwich between polycarbonate foil and injection molding material, no abrasion of the foil can occur in daily use. Another disadvantage of this prior art is the sticking to the mold during deformation as well as the high pressure and temperature sensitivity of the printed image, which in turn leads to disadvantageous washing out and thus bad print image during back molding.

It is therefore an object of the present invention to provide a printing ink wherein the adhesion of the printing ink and / or the printing ink is improved and optimized with respect to the substrate. In particular, the need to use volatile solvents is eliminated to prevent unwanted drying in the screen during the printing process, as well as the need for solvent redensification, thereby shortening the processing time. As a result, finer details can be printed and thus a higher print quality can be achieved. In the further processing step of the back-spraying, disadvantageous washing out or deterioration of the printed image can be avoided.

The object is achieved by the printing ink or the printing ink having the features of the main claim; advantageous further Formations of the invention are described in the subclaims.

In accordance with the invention, it has surprisingly been found, first of all surprisingly, that various radiation-curable monomers can even bring the thermoplastic polycarbonate resin into a stable solution and then be suitable for film formation with the same by UV curing. In accordance with the invention, this is then advantageously used to ensure that the resulting printing ink and / or the printing varnish do not dry in the screen in a screen-printing process, and that no disadvantageous re-thinning and / or cleaning of the screen is necessary. Typically, the curing is preferably carried out under UV irradiation, LED curing or optionally with electron beam curing, with typical curing times of significantly less than 1 sec. lead to a very rapid curing of the liquid ink and / or the printing varnish. After curing, the prints are printed directly without additional temperature addition by e.g. a drying channel weiterverarbeitbar. This significantly shortens the processing time for printing and increases productivity. It is also advantageous that by avoiding any leaching od. Like. In combination with the best adhesion to the film substrate, fine details can be printed and thus, with the screen printing process, potentially further application fields become accessible.

In the context of the invention, the term "UV-curable" or "radiation-curable" is also to be understood as "crosslinkable", which means that curing of the colored film takes place by means of radical chain polymerization The difference between customary hitherto in the prior art used and the curable monomer used in the invention, which is used as a solvent for the PoIy Carbonate is used, is that the solvent is released according to the conventional understanding in the drying of the paint in the air, the curable monomers in the color film, however, are involved or remain. This avoids the environmental impact of VOCs (Volatile Organic Compounds) that can be generated when the solvent is removed during drying of a solvent-based system. At the same time, the significantly more compact UV curing system requires significantly less space in the pressure chamber. Another advantage of UV curing is lower energy consumption compared to a drying channel used for drying the solvent based system.

The term "non-radiation-curable" in this context means in particular the absence of a reactive double bond.

Radiation-curing printing inks, in addition to the binders according to the invention, such as all printing inks and / or printing varnishes, can contain many different components and, of course, have to be adapted to the respective application and the printed substrate. The various components include e.g. Pigments, fillers and auxiliaries, which are usually required only in very small quantities, but are often favorable for easy processing.

Advantageously, the thermoplastic, non-UV-curable polycarbonate resin in conjunction with the typically non-volatile (or at best low-volatility) monomer ensures that the ink is firmly anchored to a substrate (eg, a plastic film) and thus the finished print will be subject to stress Abrasion, heat and mechanical bending as well as the conditions as they usually arise when injecting the printed film, survives favorable. Due to the non-volatility of the individual components of the printing ink, there is no subsequent dilution or the like during processing. as an additional process step required, as is necessary for example in halogen-free solvents from the prior art.

Another advantage is that the polycarbonates used in the invention are highly heat-resistant and very flexible, so that they od ideally for injection molding. Like. Are suitable.

For the practical implementation of the invention are particularly known from the mentioned EP 0 688 839 Bl known polycarbonates from Bayer MaterialScience AG, which, however, deviating from the prior art, in the context of the present invention dissolved in a UV-curable or radiation-curable monomer or a mixture of curable monomers.

The printing inks or printing lacquers according to the invention are suitable for producing a laminate in such a way that a substrate printed with the printing ink according to the invention is processed on the printing side by injection molding with a (thermoplastic) plastic to form the laminate. In this way, in the manner indicated above, an object which is optimally protected against abrasion can be manufactured, in which, moreover, the typeface is optimized. For further disclosure of such a laminate or object realized therewith, the reference to the basic procedure according to EP 0 691 201 B1 is given, in particular with regard to the layer structure, the substrate used and the further thermoplastic material. The essential advantage of the present invention is that the ink used, for which the polycarbonate is dissolved in UV-curable monomers, permits simple radiation curability, preferably UV curability of the ink, better adhesion of the ink to the printing material Substrate, a deformability of this coated substrate without damaging the ink layer and a backfilling of such a coated substrate with thermoplastic see plastics without leaching or destruction of the ink layer can be achieved. The glass transition temperature of the paint according to the invention can vary in the range from 216 ° C. (glass transition temperature of a polycarbonate binder used) to values of> 30 ° C. The glass transition temperature of the polycarbonate used as binder in the color according to the invention can be both below and above the glass transition temperature of the substrate. However, it may be advantageous for the glass transition temperature of the polycarbonate used as the binder to be above the glass transition temperature of the substrate. The glass transition temperature is determined according to ISO 11357.

Further advantages, features and details of the present invention will become apparent from the following description, including the structural formulas, formulations, procedures and parameters disclosed therein. These apply in the context of the present invention in any combination as belonging to the invention. In order to avoid repetition, features disclosed according to the substance should also be regarded as disclosed according to the method and be able to be claimed. Likewise, according to the method disclosed features should also be considered as material according disclosed and claimable. The printing process can be, for example, a screen printing, rotary screen printing, pad printing, offset printing, flexographic, gravure printing or inkjet printing process. The screen printing method is preferred.

The curing of the ink is preferably carried out with UV light in a wavelength range of 200 to 450 nm, which is sufficient to achieve a complete curing of the printing ink or the printing varnish. Alternatively, the ink or varnish can be cured without the use of photoinitiators with electron beams. In the following, if the term "UV-curable" is used, curing by way of another radiation, for example electron beams, is to be read as an alternative.For the drying of the UV-curable ink, it is also possible to use LED units which are almost free emit monochromatic light in the UV light range or near ultraviolet light range.

It can be printed the whole color palette. When printing by screen printing, it is preferable to use a screen printing cloth 100-40 to 180-27, preferably 140-34 or 150-31, resulting in a paint layer thickness of 5-12 / μm. The curing is carried out depending on the printing task and printing machine with commercially available mercury medium-pressure lamps or doped lamps with 80-400 W / cm, preferably 120 to 200 W / cm, which are substantially focused. The exposure time is coupled to the printing speed because the printing and exposure devices are coupled. When printing the foils, a usual printing speed is 1-50 impressions / min.

It (eg for the abrasion-resistant decorating injection molded parts by Folienhintersprit tion) binder is required, which at the high temperatures of injection molding do not melt, but firmly adhere to the substrate and are flexible. These requirements are met by special high-temperature-resistant polycarbonates.

The invention preferably relates to high-temperature-resistant flexible printing inks or lacquers which

A) as binders at least one polycarbonate, preferably based on geminally disubstituted dihydroxydiphenylcycloalkanes,

B) contain as a solvent radiation-curing monomers, preferably UV-curing monomers or monomer mixtures.

Suitable polycarbonates are preferably high molecular weight, thermoplastic, aromatic polycarbonates having M _w (weight average molecular weight) of at least 10,000, preferably from 20,000 to 300,000, which contain bifunctional carbonate structural units of the formula (I),

(I)

wherein R ¹ and R ² are independently hydrogen, halogen, preferably chlorine or bromine, Ci-C ₈ alkyl, C ₅ -C ₆ cycloalkyl, Cβ-Cio-aryl, preferably phenyl, and C ₇ -C ₂ aralkyl preferred Phenyl-C 1 -C ₄ -alkyl, in particular benzyl, m is an integer from 4 to 7, preferably 4 or 5,

R ³ and R ⁴ are individually selectable for each X, independently hydrogen or Ci-C alkyl, and _δ

X is carbon, and n is an integer of 30 or greater, more preferably an integer of 50 to 900, most preferably an integer of 60 to 250,

with the proviso that on at least one atom X, R ³ and R ^{4 are} simultaneously alkyl.

Starting materials for the polycarbonates are dihydroxydiphenylcycloalkanes of the formula (Ia)

(Ia)

wherein

X, R ¹ , R ² , R ³ , R ⁴ and m and n have the meaning given for the formula (I).

X, R ³ and R ⁴ are preferably simultaneously alkyl at 1-2 atoms, in particular only at one atom. Preferred alkyl is methyl; the X atoms in the alpha position relative to the diphenyl-substituted C atom (CI) are preferably not dialkyl-substituted, while the alkyl di-substitution in the beta position relative to CI is preferred.

Preference is given to dihydroxydiphenylcycloalkanes having 5 and 6 ring C atoms in the cycloaliphatic radical (m = 4 or 5 in formula (Ia)), for example the diphenols of the formulas (Ib) to (Id),

(Ib)

(Ic)

(Id)

wherein the 1, 1-bis (4-hydroxyphenyl) -3, 3, 5-trimethylcyclohexane (formula (Ib) with R ¹ and R ² is H) is particularly preferred. The polycarbonates can be prepared according to German Patent Application P 3 832 396.6 or EP-A 0 359 953 from diphenols of the formula (Ia).

It is possible to use both a diphenol of the formula (Ia) to form homopolycarbonates and also several diphenols of the formula (Ia) to form copolycarbonates.

In addition, the diphenols of the formula (Ia) may also be mixed with other diphenols, for example those of the formula (Ie)

HO-Z-OH (Ie)

be used for the production of high molecular weight, thermoplastic, aromatic polycarbonates.

Suitable other diphenols of the formula (Ie) are those in which Z is an aromatic radical having 6 to 30 C atoms, which may contain one or more aromatic nuclei, may be substituted, and aliphatic radicals or other cycloaliphatic radicals. may contain radicals as those of the formula (Ia) or heteroatoms as bridge members.

Examples of the diphenols of the formula (Ie) are: hydroquinone, resorcinol, dihydroxydiphenyls, bis (hydroxyphenyl) alkanes, bis (hydroxyphenyl) cycloalkanes, bis (hydroxyphenyl) sulfides, bis (hydroxyphenyl) ether, bis (hydroxyphenyl) ether, bis (hydroxyphenyl) (hydroxyphenyl) ketones, bis (hydroxyphenyl) sulfones, bis (hydroxyphenyl) sulfoxides, alpha, alpha 'bis (hydroxyphenyl) diisopropylbenzenes and their ring-alkylated and ring-halogenated compounds.

These and other suitable diphenols are e.g. in US-A 3,028,365, 2,999,835, 3,148,172, 3,275,601, 2,991,273, 3,271,367, 3,062,781, 2,970,131 and 2,999,846, in DE-A 1 570 703, 2 063 050, 2 063 052, 2 211 956, Fr-A 1 561 518 and in the monograph "H. Schnell, Chemistry and Physics of Polycarbonates, Interscience Publishers, New York 1964".

Preferred other diphenols are, for example:

4,4'-dihydroxydiphenyl, 2,2-bis- (4-hydroxyphenyl) -propane, 2,4-bis- (4-hydroxyphenyl) -2-methylbutane, 1,1-bis- (4-hydroxyphenyl) -cyclohexane , alpha, alpha -bis (4-hydroxyphenyl) -p-diisopropylbenzene, 2,2-bis (3-methyl-4-hydroxyphenyl) -propane, 2,2-bis- (3-chloro-4-hydroxyphenyl) propane, bis (3, 5-dimethyl-4-hydroxyphenyl) -methane, 2,2-bis-

(3,5-dimethyl-4-hydroxyphenyl) propane, bis (3,5-dimethyl-4-hydroxyphenyl) sulfone, 2,4-bis (3,5-dimethyl-4-hydroxyphenyl) -2- methylbutane, 1, 1-bis- (3,5-dimethyl-4-hydroxyphenyl) -cyclohexane, alpha, alpha -bis (3, 5-dimethyl-4-hydroxyphenyl) -p-diisopropylbenzene, 2,2-bis- (3, 5-dichloro-4-hydroxyphenyl) - propane and 2, 2-bis (3, 5-dibromo-4-hydroxyphenyl) -propane.

Particularly preferred diphenols of the formula (Ie) are, for example: 2,2-bis- (4-hydroxyphenyl) -propane, 2,2-bis- (3,5-dimethyl-4-hydroxyphenyl) -propane, 2,2-bis - (3, 5-dichloro-4-hydroxyphenyl) propane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) -propane and 1,1-bis (4-hydroxyphenyl) -cyclohexane.

In particular, 2, 2-bis (4-hydroxyphenyl) propane is preferred. The other diphenols can be used both individually and in a mixture.

The molar ratio of diphenols of the formula (Ia) to the other diphenols of the formula (Ie) which may be used should be between 100 mol% (Ia) to 0 mol% (Ie) and 2 mol% (Ia) to 98 mol -% (Ie), preferably between 100 mol% (Ia) to 0 mol% (Ie) and 10 mol% (Ia) to 90 mol% (Ie) and especially between 100 mol% (Ia) to 0 mol% (Ie) and 30 mol% (Ia) to 70 mol% (Ie) are.

The high molecular weight polycarbonates from the diphenols of the formula (Ia), optionally in combination with other diphenols, can be prepared by the known polycarbonate production processes. The various diphenols can be linked together both statistically and in blocks.

The novel polycarbonates may be branched in a manner known per se. If the branching is desired, it is possible in known manner by condensing in small amounts, preferably amounts between 0.05 and 2.0 mol% (relative to diphenols used), to three or more than three functional compounds, especially those having three or more than three phenolic hydroxyl groups. Suitable branching agents having three or more than three phenolic hydroxyl groups are: phloroglucinol, 4, 6-dimethyl-2,4,8-tri- (4-hydroxyphenyl) heptene

2, 4, 6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -heptane, 1,3,5-tri-

(4-hydroxyphenyl) benzene, 1,1,1-tri- (4-hydroxyphenyl) -ethane,

Tri- (4-hydroxyphenyl) -phenylmethane, 2,2-bis- [4,4-bis (4-hydroxyphenyl) -cyclohexyl] -propane, 2,4-bis- (4-hydroxyphenyl-isopropyl) -phenol, 2, 6-is- (2-hydroxy-5-methylbenzyl) -4-methylphenol, 2- (4-hydroxyphenyl) -2- (2,4-dihydroxyphenyl) propane, hexa- [4- (4- hydroxyphenyl-isopropyl) -phenyl] -orthoterephthalic acid ester, tetra (4-hydroxyphenyl) -methane, tetra- [4- (4-hydroxyphenyl-isopropyl) -phenoxy] -methane and 1,4-bis- [4 ', 4' ' -dihydroxytriphenyl) -methyl] -benzene.

Some of the other trifunctional compounds are 2,4-dihydroxybenzoic acid, trimesic acid, cyanuric chloride and 3,3-bis (3-methyl-4-hydroxyphenyl) -2-oxo-2,3-dihydroindole.

As chain terminators known per se regulation of the molecular weight of the polycarbonates are monofunctional compounds in conventional concentrates. Suitable compounds are e.g. Phenol, tert. Butylphenols or other alkyl-substituted phenols. For controlling the molecular weight, in particular small amounts of phenols of the formula (If) are suitable

(If) wherein

R is a branched Cs and / or Cg alkyl radical.

Preferably, in the alkyl radical R, the proportion of CH ₃ protons between 47 and 89% and the proportion of CH and CH ₂ protons between 53 and 11%; also preferably R is in the o- and / or p-position to the OH group, and more preferably the upper limit of the ortho-portion is 20%. The chain terminators are generally used in amounts of 0.5 to 10, preferably 1.5 to 8 MoI-%, based on diphenols used.

The polycarbonates may preferably be prepared in a manner known per se according to the phase boundary behavior (compare H. Schnell "Chemistry and Physics of Polycarbonates", Polymer Reviews, Vol. IX, page 33ff., Interscience Publ.

In this case, the diphenols of the formula (Ia) are dissolved in an aqueous alkaline phase. For the preparation of copolycarbonates with other diphenols, mixtures of diphenols of the formula (Ia) and the other diphenols, for example those of the formula (Ie), are used. To regulate the molecular weight, chain terminators, for example of the formula (If), can be added. Then, in the presence of an inert, preferably polycarbonate-dissolving, organic phase is reacted with phosgene by the method of interfacial condensation. The reaction temperature is between 0 ⁰ C and 40 ⁰ C.

The optionally used branching agents (preferably 0.05 to 2.0 mol%) can either be initially charged with the diphenols in the aqueous alkaline phase or added in the organic solvent before phosgenation. In addition to the diphenols of the formula (Ia) and, if appropriate, other diphenols (Ie), it is also possible to use their mono- and / or bis-chlorocarbonic acid esters, these being added dissolved in organic solvents. The amount of chain terminators and of branching agents then depends on the molar amount of diphenolate radicals corresponding to formula (Ia) and optionally formula (Ie); When using chloroformates the amount of phosgene can be reduced accordingly in a known manner.

Suitable organic solvents for the chain terminators and optionally for the branching agents and the chloroformates are, for example, methylene chloride, chlorobenzene, in particular mixtures of methylene chloride and chlorobenzene. Optionally, the chain terminators and branching agents used can be dissolved in the same solvent.

The organic phase used for the interfacial polycondensation is, for example, methylene chloride, chlorobenzene and mixtures of methylene chloride and chlorobenzene.

For example, NaOH solution serves as the aqueous alkaline phase. The preparation of the polycarbonates by the interfacial process can be catalyzed in a conventional manner by catalysts such as tertiary amines, in particular tertiary aliphatic amines such as tributylamine or triethylamine; the catalysts can be used in amounts of 0.05 to 10 mol%, based on moles of diphenols used. The catalysts can be added before the beginning of the phosgenation or during or after the phosgenation.

The polycarbonates can be synthesized in homoge- generous phase, the so-called "pyridine process" as well as by the known melt transesterification process using, for example, diphenyl carbonate instead of phosgene.

The polycarbonates preferably have molecular weight M _w (weight average, determined by gel chromatography after prior calibration) of at least 10,000, more preferably from 20,000 to 300,000 and in particular from 20,000 to 80,000. They may be linear or branched, they are homopolycarboxylic nate or copolycarbonates based on the diphenols of the formula (Ia).

The incorporation of the diphenols of the formula (Ia) has resulted in the formation of new polycarbonates with high heat resistance, which otherwise have a good property profile. This applies in particular to the polycarbonates based on the diphenols of the formula (Ia) in which m is 4 or 5 and more particularly for the polycarbonates based on the diphenols (Ib) in which R ¹ and R ² independently of one another Ia) mentioned and are particularly preferably hydrogen.

The particularly preferred polycarbonates are therefore those in which structural units of the formula (I) m = 4 or 5 are very particularly those of units of the formula (Ig)

(Ig)

wherein R ¹ , R ² and n have the meaning given for formula (I), but more preferably are hydrogen.

These polycarbonates based on the diphenols of the formula (Ib), in which in particular R ¹ and R ^{2 are} hydrogen, furthermore have good UV stability and good flow behavior in the melt for high heat resistance, which was not to be expected, and show very good results Solubility in the monomers mentioned below.

In addition, the arbitrary composition with other diphenols, in particular with those of the formula (Ie), can be used to vary the carbonate properties in a favorable manner. In such

Copolycarbonates are the diphenols of the formula (Ia) in amounts of 100 mol% to 2 mol%, preferably in amounts of 100 mol%.

% to 10 mol% and in particular in amounts of from 100 mol% to 30 mol%, based on the total amount of 100 mol% of diphenol units, contained in polycarbonates.

Particularly preferred polycarbonates are copolycarbonates of the formula (Ih), where the comonomers are alternating, block-like or may be random in the copolymer, p + q = n, and the ratio of q and p to each other is such as the mole% reported in the previous section for the formulas (Ie) and (Ia) reflect this.

To produce the printing ink of the invention or the printing varnish, the copolycarbonate used is dissolved in one or more UV-curable monomers which are crosslinkable, for. B. due to the polymerization suitable acrylate groups or ethylenically unsaturated groups. These monomers are preferably monofunctional acrylates. However, it is also possible to use di-, tri- or higher-functional acrylates or methacrylates.

These UV-curable or radiation-curable monomers serve to dissolve the polycarbonate, but are based on a different principle compared to the solvents used and understood, for example, in EP 0 688 839 B1. The solvents in the conventional sense, as used, for example, in EP 0 688 839 Bl, are used exclusively for dissolving the polycarbonate. By the subsequent drying of the paint, the solvents should as completely as possible, ie to almost 100%, evaporate and thus have no film-forming properties. In the present invention, however, crosslinkable monomers are used which are also said to dissolve the polycarbonate, but at best they remain 100% in color, so that they are dimensionally have a pronounced influence on the properties of the cured ink and decisively influence the film properties. The volatility of the radiation-curable monomers should preferably be below 5%, more preferably below 1%.

For example, but not limited to, can be used as crosslinkable monomers isobornyl (meth) acrylate (IBO (M) A), 2-phenylethyl (meth) acrylate (PE (M) A), ethoxylated 2-phenylethoxyacrylate, methoxylated Polyethylenglykolmo- no meth) acrylates, alkoxylated tetrahydrofurfuryl (meth) acrylate, alkoxylated lauryl acrylate, alkoxylated phenyl acrylate, stearyl (meth) acrylate, lauryl (meth) acrylate, isodecyl (meth) acrylate, isooctyl acrylate, octyl acrylate, tridecyl (meth) acrylate , Caprolactone acrylate, ethoxylated or alkoxylated nonylphenol (meth) acrylate, cyclic trimethylolpropane formaldehyde acrylate, glicidyl methacrylate, propylene glycol monomethacrylate, 2- (2-ethoxyethoxy) ethyl acrylate (EOEOEA), methyl methacrylate (MMA), propoxylated allyl methacrylate, ethoxylated hydroxyethyl methacrylates, Ethoxytriglycol methacrylate, 1,6-hexanediol di (meth) acrylate (HDD (M) A), alkoxylated hexanediol diacrylates, alkoxylated cyclohexanedimethanol di (meth) acrylates, 1,3-butylene glycol di (m eth) acrylate, 1,4-butanediol di (meth) acrylate, diethylene glycol di (meth) acrylate, polyethylene glycol (200) diacrylate, polyethylene glycol (400) di (meth) acrylate, polyethylene glycol (600) di (meth) acrylate, ethoxylated Bisphenol A di (meth) acrylates, tetraethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, ethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, dipropylene glycol diacrylate (DPGDA), alkoxylated neopentyl glycol di (meth) acrylate, propoxylated trimethylolpropane triacrylate, trimethylolpropane tri (meth) acrylate , propoxylated glyceryl triacrylate GPTA), dipentaerythritol hexaacrylate (DPHA), tripropylene glycol diacrylate (TPGDA), dipentaerythritol pentaacrylate (DiPEPA), pentaerythritol triacrylate (PETIA), (ethoxylated) pentaerythritol tetraacrylate, ditrimethylpropane tetraacrylate, trimethylpropane triacrylate (TMPEOTA), tricyclodecanimethanol diacrylate (TCDDMDA), dipentaerythritol pentaacrylate, low molecular weight monofunctional urethane acrylates, low molecular weight epoxy acrylates, hydroxypropyl methacrylate (HPMA).

2-Phenylethyl (meth) acrylate (PE (M) A), ethoxylated 2-phenylethoxyacrylate, tetrahydrofurfuryl methacrylate, 2- (2-ethoxyethoxy) ethyl acrylate (EOEOEA), methyl methacrylate (MMA), 1, 6 are very particularly preferred from the preceding list Hexanedioldiacrylate (HDDA).

Further, various vinyl ethers can be used as crosslinkable monomers such as, but not limited to, diethylene glycol divinyl ether (DVE-2) or triethylene glycol divinyl ether (DVE-3).

Examples, but not limited to, of the compounds having an ethylenically unsaturated bond are N-vinylpyrrolidone (NVP), N-vinylcaprolactam, N-vinylformamide (NVF) or acrylic morpholine (ACMO). For reasons of health, the use of N-vinylpyrrolidone (NVP) should be avoided if possible.

In general, one or more additional UV-curable or radiation-curable monomers are added to the binder for printing inks or lacquers. These UV-curable monomers, which are also cured, may be the UV-curable monomers discussed above in connection with the copolycarbonate solution. The total amount of UV-curable monomers is generally 1-99 wt.%, Preferably 25 to 85 wt.%, In particular 50 to 85 wt.%. The process of crosslinking the monomers takes place, for example, via UV curing, LED curing or electron beam curing. These are already known from the literature and in various other applications, for example in the printing of optical storage media, state of the art.

The process of radiation curing can be combined by the present invention with its described advantages with the process of in-mold technique, in particular the insert mold technique.

Preferably, no volatile organic solvent is added to the printing ink or the printing ink. Nevertheless, volatile solvents may be added in exceptional cases to optimize the printing ink or varnish for specific applications. Also, by the addition of additives, small amounts of solvents may be introduced into the paint, since a plurality ^'of the active substances available on the market are dissolved in solvents or diluted by them. A maximum of 10%, preferably not more than 5%, of volatile organic solvents should be used in the printing ink or printing ink. However, it is particularly preferable to dispense with the use of the volatile organic solvents.

Furthermore, the printing ink or the printing ink may contain at least one further resin in addition to the polycarbonate used. The resins may be selected from a wide variety of resins. Examples include, but are not limited to: epoxy resins, polyester resins, cellulosic resins, methyl methacrylate colopolymers (eg Paraloid B-48N, Paraloid B60, Paraloid B-82 from Rohm & Haas Deutschland GmbH, In der Kroen 4, D 60489 Frankfurt, Neocryl B -810 from Neoresins Lurgiallee 6-8, D-60439 Frankfurt / Main); Ethyl methacrylate (eg Paraloid B 72 from Rohm &Haas); Butyl methacrylate copolymers (eg Degalan LP 65/12, Degalan LP 68/04 from Röhm GmbH & Co KG, Kirschenallee); liquid epoxy resins (eg Polypox E 064 from UPPC AG, Schemmerbergerstr. 39, D-88487 Mietingen, Rütapox resin 0164 from Bakelite AG, Araldite GY 250 from Vantico); unsaturated polyester resins (eg, adhesive resin LTH from Degussa Chemiepark Mari, Paul-Baumann-Str. 1, 45764 Mari); saturated polyester resins (Dynapol L 912, Dynapol L 952 from Degussa). Such additional resins may, for example, be present in an amount of from 0 to 50% by weight dry weight, based on the total mass of the paint or paint, preferably from 0 to 20% by weight, more preferably 0 to 5% by weight to some To optimize properties such as adhesion. However, with regard to the amount of addition of these additional passive or inert resins, which are chemically distinct from the polycarbonate used as the main resin, it should be noted that they usually increase the risk of color being washed off during back molding.

The paints or lacquers of the invention preferably contain at least one photoinitiator, usually two and possibly three or more photoinitiators, to initiate surface and deep cure (crosslinking) of the ink with UV light. Preference is given to photoinitiators with the lowest possible tendency to migration and volatility in order to avoid negative phenomena such as delamination of the paint from the sprayed material. In addition, the photoinitiators used should show the lowest possible tendency to yellowing, so that the color of the component is not changed and / or falsified.

They can be selected from the usual photoinitiators used in UV-curable inks and varnishes, etc. For example, but not limited to, 1- Hydroxycyclohexyl phenyl ketone (Irgacure ^® 184 from Ciba Specialty Chemicals AG, 141 Klybeckstrasse, Postfach, 4002 Basel Switzerland), 2-methyl-1- [4- (methylthiophenyl) -2-morpholinopropan] -1-one (Irgacure ^® 907 from Ciba) 2-hydroxy-l- [4- (2-hydroxyethoxy) phenyl] -2-methyl-1-propanone (Irgacure ^® 2959 from Ciba), α-dimethoxy-α- phenylacetophenone (Irgacure ^® 651 from Ciba), 2-benzyl -2- dimethylamino-1- (4-morpholinophenyl) butan-1-one (Irgacure ^® 369 from Ciba), bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide (Irgacure ^® 819 from Ciba), 2-hydroxy-2- methyl-l-phenyl-l-propanone (Darocur ^® 1173 from Ciba), isopropylthioxanthone (ITX of Lamb son), 2-chlorothioxanthone (CTX from Lainbson), benzophenone, 2,4,6-trimethylbenzenediphenylphosphine (TPO from BASF), Ethyl 2, 4, 6-trimethylbenzoylphenylphosphinate (TPO-L from BASF) and methylbenzoylformate (MBF from Lambson).

The amount added depends largely on the choice of printing method and the type of photoinitiators used. The total amount of photoinitiators is generally from 1 to 20% by weight, preferably from 2 to 10% by weight, more preferably from 3 to 7%, based on the total mass of the printing ink or the printing ink.

In addition, co-initiators such as amines (eg MDEA from BASF Aktiengesellschaft, Carl-Bosch-Str 38, D-67056 Ludwigshafen) or amine-modified acrylates (eg Ebecryl P115, Ecclesyl 7100 from Surface Specialties UCB, Actilane 705, Actilane 715, Actilane 755 from Akzo Nobel Resins bv., Sales Office Germany, Industriestra. 8 46446 Emmerich, Laromer PO 94 F, Laromer LR 8869 from BASF, Craynor 503, Craynor 550 from Cray Valley, Photomer 4775F from Cognis) in amounts of 0.5 to 20% by weight, based on the total mass of the printing ink or the printing varnish, depending on the printing method and the type of photoinitiators used. Preferred are bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide (Irgacure ^® 819 from Ciba), 2-hydroxy-2-methyl-l-phenyl-l-propanone (Darocur ^® 1173 from Ciba) and Trimethylbenzoldiphe- nylphosphinoxid (TPO of BASF).

A thickener may also be present in the printing ink or lacquer according to the invention and likewise be selected from conventional materials used for this purpose in printing inks and / or printing lacquers. These include, for example, but not limited to, fumed silica, structure-modified with methacryl silane post-treated sheet silicates and castor oil derivatives and solutions of modified ureas or Polyhydroxycarboxylsäureamiden. The amount of thickener (s) used is usually in the range from 0 to 10% by weight, preferably 0.5 to 5% by weight and in particular 1.5 to 3% by weight, based on the total mass of the printing ink or of printing ink.

In general, the printing ink or paint according to the invention also contains a defoamer and / or a leveling agent. Defoamers may be selected, for example, but not limited to, from modified acrylates or modified acrylate copolymers, but also from silicone-containing compounds. Leveling agents include, for example, modified polyacrylates and polysiloxanes.

In general, however, depending on the printing process and the type of antifoams and / or leveling agents used, they are used in an amount of from 0.1 to 2.5% by weight, based on the total mass of the printing ink or varnish. Preferred use find in the defoamers and leveling agents silicone-free products to prevent migration of these compounds and the possible delamination of the injection of the color. As stabilizers, but not limited to, Genorad 16 from Rahn and Fluorstab UV2 from Kromachem, 10, Park Industrial Center, Tolpits Lane, Watford, Hertfordshire WD1 8SP, UK are preferably used.

The printing ink of the invention or the printing ink may comprise one or more fillers. These fillers are used to reduce the price and to optimize the flow properties of the printing ink and / or the printing ink.

The nature of the fillers is not particularly critical. They may be selected from conventional fillers used in printing inks, such as, but not limited to, china clay, barium sulfate (precipitated as blanc fixe), calcium carbonate, zinc sulfide, silica, talc, aluminum silicate, aluminum hydroxide, and / or silicic acid , The amount of filler employed is generally in the range of 0 to 50% by weight, preferably 0 to 30% by weight, e.g. 20 wt.%, Based on the total mass of the ink or the paint.

The pigments which are preferably present in the printing ink according to the invention may be any desired pigments. For example, but not limited to, titanium dioxide, zinc sulfide, pigment black, azodiaryl yellow,

Isoindole yellow, diarylid orange, quinacridone magenta, diketopyrrole red, copper phthalocyanine blue, copper phthalocyanine green, dioxazine violet and diketometal oxide.

A fairly comprehensive listing of other useful pigments is in the Color Index International, Fourth Edition Online, 2001, published by the Society of Dyers and Colourists in To find affiliation with the American Association of Textile Chemists and Colorists.

It is also possible to use effect pigments such as, but not limited to, metal oxide-coated mica and metallic pigments. The amount of colored pigment is usually 1 to 50% by weight, preferably 3 to 45% by weight, based on the weight of the ink, depending on the kind of the pigment, the desired hiding power and the printing method chosen. White pigment is usually used in an amount of 20 to 50% by weight, preferably 25 to 45% by weight. The colored pigments are i.d.R. in an amount of 1 to 20% by weight, depending on the type and color shade and the printing method used. Metal oxide-coated mica and metallic pigments are used i.d.R. in an amount of 1 to 20% by weight, depending on the type and color shade and the printing method used. All pigments used must be very stable in temperature and do not decompose, sublime or change the hue due to the resulting temperature during the back molding process.

In addition, waxes can be added to improve the color properties. Suitable waxes are commercially available. Particularly suitable are the following waxes, examples of which are commercially available products for the respective waxes; the respective source of supply is given in brackets:

Polyethylene waxes:

Ceraflour 990 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands)

Ceraflour 991 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands) Printwax ME 0825 (Deurex Micro-Technologies GmbH, Dr. Bergius Street 18/20; 06729 Tröglitz Germany)

Modified polyethylene waxes

Ceraflour 961 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands)

Everglide UV 961 25% (Krahn-Chemie GmbH, Grimm 10, 20457 Hamburg Germany)

High Density Polyethylene Waxes Ceraflour 950 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands)

Polymer-silica compounds

Deuteron MM 659 (Deuteron GmbH; in the Ellern 2; 28832 Achim Germany)

Micronized polyolefin waxes

Micro Wax DM (Finma-Chemie GmbH, Theodor-Heuss-Strasse 5, 61191 Rosbach Germany) Micro Wax HTDM (Finma-Chemie GmbH, Theodor-Heuss-Strasse 5, 61191 Rosbach Germany)

Fischer-Tropsch waxes

Ceraflour 940 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands)

Micronized polytetrafluoroethylene waxes Ceraflour 980 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands) Ultraglide UV 701 (Krahn-Chemie GmbH, Grimm 10, 20457 Hamburg Germany)

Shamrock ST-3 (Shamrock, Heesterveldweg 21, 3700 Tongeren Belgium) Micronized polytetrafluoroethylene / polyethylene waxes. Ceraflour 968 (Byk-Cera, - Danzigweg 23, 7418 DE Deventer Netherlands) Ceraflour 996 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands)

Amide waxes

Ceraflour 994 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherland)

Deurex MA 7020 (Deurex Micro-Technologies GmbH, Dr. Bergius Strasse 18/20; 06729 Tröglitz Germany)

Carnauba Wax Ceraflour 4RC 1165 (Byk-Cera, Danzigweg 23, 7418 DE Deventer Netherlands)

Everglide UV 636 25% (Krahn-Chemie GmbH, Grimm 10, 20457 Hamburg Germany)

montan waxes

Deurex MM 8120 (Deurex Micro-Technologies GmbH, Dr. Bergius, Strasse 18/20, 06729 Tröglitz Germany)

Deurex MM 8200 (Deurex Micro-Technologies GmbH, Dr. Bergius Strasse 18/20; 06729 Tröglitz Germany)

Micronized Ester Waxes with UV-reactive Groups Ceridust TP 5091 (Clariant GmbH, Am Unisyspark 1, 65843 Sulzbach Germany)

Paraffin waxes

Polyspers HP (Eastman Chemical Germany GmbH; Charlottenstrasse 61; 5114 9 Cologne Germany) Polypropylene waxes

Crayvallack WN-1135 (Lubrizol Coating Additives GmbH, Max

Planck Road 6; 27721 Ritterhude Germany)

Spray-micronized polyolefin waxes

Printwax MXF 9510 D (Deurex Micro-Technologies GmbH, Bergius Strasse 18/20, 06729 Tröglitz Germany) Printwax MX. 9815 D (Deurex Micro-Technologies GmbH, Bergius Strasse 18/20, 06729 Tröglitz Germany)

The concentration of the wax is preferably 0% by weight to 10% by weight, more preferably 0% by weight to 3.0% by weight and particularly preferably 0-2% by weight, based on the weight of the printing ink or of the printing ink.

Before printing, an adhesion promoter in an amount of from 0.01 to 20% by weight, preferably from 1 to 10% by weight, based on the weight of the ink or the varnish, can be added to the printing ink or varnish for printing. These can be isocyanate adhesion promoters, for example aliphatic polyisocyanates, such as hexamethylene diisocyanate (HDI), trimethylhexane diisocyanate (TMHDI), cycloaliphatic polyisocyanates, such as isophorone diisocyanate (IPDI), hydrogenated xylylene diisocyanate (HXDI) or diisocyanatodicyclohexylmethane (HMDI), and aromatic polyisocyanates, such as tolylene diisocyanate (TDI), xylylene diisocyanate (XDI), tetramethylxylylene diisocyanate (TMXDI) or diisocyanatodiphenylmethane (MDI). Commercially available products include Desmodur E41 or Desmodur N 75 (Bayer). Polyimides, such as polyethyleneimides, polycarbodiimides, can also be used. Further adhesion promoters are silane coupling agents, such as alkylsilanes, vinylsilanes, methacryloxysilanes, epoxysilanes, aminosilanes, urea-silanes, chlorosilanes and isocyanatosilanes, and aminosilanes, such as, for example, Aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, bis (gamma-trimethoxysilylpropyl) -amine, N-phenyl-gamma-aminopropyltrimethoxysilane and N-jbeta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, and isocyanatosilanes, such as gamma-isocyanatopropyltriethoxysilane.

Preferred printing processes are screen printing, rotary screen printing, digital printing, flexographic printing, book printing, offset printing and gravure printing. Particularly preferred is the screen printing.

Common substrates printed with the printing ink or varnish and used in the in-mold process include polycarbonate, pretreated polyester, ABS, PMMA, polycarbonate / polyester blends, polycarbonate / ABS blends, without themselves to limit it. These films are offered by Bayer Material Science (Bayfol®, Makrolon®, Makrofol®, Bayblend®), GE. Structured Products (Lexan®) and Autotypes (Autoflex Hiform ™, Autoflex Xtra-Form ™). The substrates used are preferably films of polycarbonates or polycarbonates / polyester blends.

The common sprayed materials which can be used to back coat the printing ink or varnish applied to the film are particularly, but not exclusively, polyesters, polycarbonates, polystyrene, ABS and PMMA. Preferred material for back molding is polycarbonate or various polycarbonate blends.

The following examples serve to exemplify the invention and are not to be considered as limiting. Exemplary embodiments:

Preparation of polycarbonates suitable as binders according to the invention:

Exemplary polycarbonates of the formula (I-h) were prepared as follows:

Polycarbonate 1

205.7 g (0.90 mol) of bisphenol A (2,2-bis (4-hydroxyphenyl) propane, 30.7 g (0.10 mol) of 1,1-bis (4-hydroxyphenyl) -3 , 3, 5-trimethylcyclohexane, 336.6 g (6 moles of KOH and 2700 g of water are dissolved in an inert gas atmosphere with stirring, then a solution of 1.88 g of phenol in 2500 ml of methylene chloride is added 198 g (2 mol) of phosgene were introduced at pH 13 to 14 and 21 to 25 ° C. Thereafter, 1 ml of ethylpiperidine was added and the mixture was stirred for a further 45 min .. The bisphenolate-free aqueous phase was separated off and the organic phase was acidified with Phosphoric acid washed neutral with water and freed from the solvent.The polycarbonate showed a relative solution viscosity of 1.255.

The glass transition temperature of the polymer was determined to be 157 ^° C. (DSC).

Polycarbonate 2

As for polycarbonate 1, a mixture of 181.4 g (0.79 mol) of bisphenol A and 63.7 g (0.21 mol) of 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane converted to polycarbonate. The polycarbonate showed a relative solution viscosity of 1.263.

The glass transition temperature of the polymer was determined to be 167 ^° C. (DSC).

Polycarbonate 3

As for polycarbonate 1, a mixture of 149.0 g (0.65 mole) of bisphenol A and 107.9 g (0.35 mole) of 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane converted to polycarbonate.

The polycarbonate showed a relative solution viscosity of 1.263.

The glass transition temperature of the polymer was determined to be 183 ^° C. (DSC).

Polycarbonate 4

As for polycarbonate 1, a mixture of 91.6 g (0.40

Mol) bisphenol A and 185.9 g (0.60 mol) of l, l-bis (4-hydroxyphenyl) -3, 3, 5-trimethylcyclohexane reacted to polycarbonate.

The polycarbonate showed a relative solution viscosity of 1.251.

The glass transition temperature of the polymer was determined to be 204 ^° C. (DSC). Polycarboπat 5

As for polycarbonate 1, a mixture of 44.2 g (0.19 mol) of bisphenol A and 250.4 g (0.81 mol) of 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane converted to polycarbonate.

The polycarbonate showed a relative solution viscosity of 1.248.

The glass transition temperature of the polymer was determined to be 216 ° C (DSC).

The glass transition temperatures were determined by DSC (Differential Scanning Calorimetry) according to ISO 11357. To determine the glass transition temperatures, the samples were previously dried in a vacuum oven for 24 hours

Preparation of the screen printing inks according to the invention:

To illustrate the invention, screen printing inks were prepared as follows:

For this purpose, initially 20% by weight of the binder from Bayer Material Science (polycarbonate 4, see above) was dissolved in 80% by weight of UV-curable monomer 4- (1-oxo-2-propenyl) morpholine. To the binder dissolved in UV-curable monomer 4- (1-oxo-2-propenyl) morpholine, further monofunctional acrylates, a diacrylate, photoinitiators, leveling agents, thickener and pigment were added, predispersed with a dissolver and with the aid of a three-roll mill or a Perlmühle a color produced with a particle size of <lOμm. The invention is described by the examples 1 and 2 listed in Tab. 1 and 2, without being limited thereto.

Example 1 (Inventive): Blue color for screen printing

Tab. 1

Example 2 (according to the invention): white ink for screen printing

Tab. 2

The glass transition temperature of the color according to the invention from Example 1 was determined at 156 ^° C. and from Example 2 at 88 ^° C. (DSC).

For coating films with the screen printing inks according to the invention, the screen printing inks of Examples 1 and 2 having a viscosity of approximately 4,000 mPa * s (cone-plate system at a shear rate of 100 / s) were each screen printed 150-31 printed on a polycarbonate film (Makrofol ^® DE-4; 375μm; Bayer material Science AG) and at a speed of 15m / min using 2 x 120 cured W / cm high pressure mercury vapor lamps.

Example 3 (according to the invention): blue ink for screen printing

In the production of a further screen printing ink according to the invention, 30% by weight of the binder from Bayer Material Science (polycarbonate 5, see above) was used in 70% by weight UV-curable monomer 4- (1-oxo-2-propenyl) morpholine solved.

The binder dissolved in UV-curable monomer 4- (1-oxo-2-propenyl) morpholine was a diacrylate, photoinitiators, Leveling agent, thickener and pigment added, predispersed with a dissolver and prepared using a three-roll mill or a bead mill, a color with a particle size of <lOμm.

The invention is described by the example listed in Tab. 3, without being limited thereto.

Tab. 3

The glass transition temperature of the paint according to the invention from Example 3 was determined at 160 ^° C. (DSC).

For coating a film with the screen printing ink of the invention, the screen printing ink with a viscosity of about 4,000 mPa * s (cone-plate system at a shear rate of

100 / s) was bonatfolie by a screen printing fabric 150-31 a polycarboxylic printed (Makrofol ^® DE-4; 375μm, Bayer AG Materials- cience) and at a speed of 15m / min using 2 x 120 W / cm thick Hardened mercury vapor lamps. For purposes of comparison, the following Examples 4 to 7 were performed:

Comparative Example 4

UV color for graphic screen printing

There was a commercially available screen printing ink having the composition according to Table 4, containing a polyacrylate medium as a binder, onto a polycarbonate film as described for Examples 1 and 2 (Makrofol ^® DE-4; 375μm, Bayer Mate rialScience AG). Printed and hardened.

Tab. 4 UV ink for graphic screen printing

Comparative Example 5:

UV color for graphic screen printing

There was a commercially available screen printing ink having the composition according to Table 5, which contained a different polyacrylate as in Comparative Example 4 as binders, as for Examples 1 and 2 described onto a polycarbonate film. (Makrofol ^® DE-4; 375μm, Bayer MaterialScience AG) printed and cured.

Tab. 5: UV color for graphic screen printing

Comparative Example 6:

UV color for graphic screen printing

It was a commercially available screen printing ink having the composition according to Tab. 6, which is a polyurethane acrylate as Binder containing, as for Examples 1 and 2 described on a polycarbonate film (Makrofol ^® DE-4; 375μm, Bayer MaterialScience AG) printed and cured.

Tab. 6: UV ink for screen printing

Comparative Example 7:

UV ink for the in-mold process

There was a commercially available screen printing ink Fa Coates (Decomold ™) containing as binder a copolymer with aliphatic polycarbonate backbone and oligomeric Urethanac- triacrylate side chains onto a polycarbonate film (as described for Examples 1 and 2 Makrofol ^® DE-4. 375μm, Bayer MaterialScience AG) printed and cured.

Example 8:

Results of the deformation experiments:

The coated films (laminates) prepared according to Examples 1 to 7 were described as follows Deformability tested.

The deformation experiments were carried out on a SAMK 360 high-pressure forming machine (HPF-deformation machine) Bj. 2000 by Niebling. For the evaluation of the deformation properties, the experiments have been carried out with a heating-ventilation blending tool. The dimensions of the component were about 190 xl20 mm with different openings to evaluate the drawing here.

The mold temperature was 100 ° C. Before deformation, the films were preheated in a heating zone. The heating time was 16 seconds in all experiments, which gave a film temperature of about 150-160 ⁰ C. For the evaluation in each case 5 films from the respective examples were deformed in succession. The evaluation was carried out visually and the results are summarized in Tab. 7.

Tab. 7

The results showed that except for the laminates prepared using the paint of the invention, only the laminate of Comparative Example 4 was deformed and could be stretched without damaging the entire laminate or the color layer.

Example 9: Results of the back injection experiments:

The coated films produced according to Examples 1 to 7 and shaped according to Example 8 (laminates) were tested for their injectability as described below. For the evaluation in the film injection molding process (FIM = Film Insert Molding) the same foils as from the deformation test could be used.

The experiments were carried out on an injection molding machine from Arburg. The Arburg Allrounder 570 C has a clamping force of max. 200 to and is year 2003. The different films were back-injected with PC / ABS at 260 ⁰ C. The filling time was 2 seconds and the injection pressure was measured at 1000 bar. The tool temperature has been set to 60 ⁰ C by default. The tool has a hot runner nozzle which uses a cold distributor to guide the plastic into the mold cavity via auxiliary pins. This results in high temperatures and shear, which can wash out the printed ink in case of excessive stress.

Subsequently, the adhesion of the back-injected plastic to the paint was evaluated in a manual withdrawal test. The evaluation was carried out visually and the results are summarized in Tab. 8. Tab. 8th

The results showed that only the laminates produced using the paint according to the invention could be back-injected with a thermoplastic both without leaching of the ink layer and with good adhesion between the laminate and the back-injected material.

Example 10: Results of the climate test:

In order to obtain a further evaluation with regard to the adhesion between printed film (laminate) and the backing material, the moldings from example 9 were exposed to a climate storage. Here were the exams in one

Climatic cabinet made by Weiss, Bj.1989 under the following conditions:

Temperature: 80 ^° C

Humidity: 85% Storage time: loo Std. Subsequently, the films were evaluated visually and also carried out a manual deduction attempt. The results are listed in Tab. 9.

Tab. 9

The results showed that only the laminates which were produced using the paint according to the invention still had a good appearance and a good adhesion after the climate storage. The comparative examples showed blistering and no longer showed adhesion.

* The laminates according to Comparative Example 4 were no longer tested in the climate storage, since already the results according to Example 9 were too bad for a downstream long-term climatic storage.

Overall rating:

Considering the results of Examples 8-10, ie for the entire process chain of deformation and back-injection of the printed films (laminates), the overall picture for the examples was as follows: Tab. 10

For the laminates of Examples 1 to 3, which were prepared using the paint according to the invention, a good deformability, drawability in this preforming and Hinterspritzbarkeit was observed. The adhesion of the back-injection material with the printed film (the laminate according to the invention) was good both immediately after the back-injection and after storage in the climatic chamber and, moreover, no leaching of the color could be observed. Some of the comparative examples 4 to 7 already exhibited significant weaknesses in terms of significant crack formation in the ink layer or sticking of the entire laminate to the deformation tool. In the case of the back-molding and the climate storage, all the comparative examples either showed strong leaching of the color from the ink layer or no to insufficient adhesion between the coated film and the back-injection material.

Example 11:

In Tab. 11, other examples of suitable blue hue colors for various printing methods have been set forth without limitation. Table 11

Example of blue colors for different printing processes

Claims

- A l -

1. printing ink or printing varnish containing non-radiation-curable, preferably aromatic, polycarbonate, in particular as a primer and / or binder, characterized in that the polycarbonate is present with radiation-curable monomers, in particular in these are dissolved.

2. Printing ink or printing varnish, in particular according to claim 1, comprising: as binder at least one non-radiation-curable aromatic polycarbonate based on a geminally disubstituted dihydroxydiphenyl nylcycloalkans, and as solvent at least one radiation-curable monomer selected from the group consisting of acrylates, methacrylates , Vinyl ethers, nitrogen-containing compounds having an ethylenic double bond, characterized in that the polycarbonate is dissolved in the solvent and the solvent after curing in the printing ink or the printing lacquer is incorporated in chemically crosslinked form.

3. Printing ink or printing varnish according to one of claims 1 or 2, characterized in that the radiation-curable monomers are a monomer mixture of different monomers, or that only one type of radiation-curable monomers for dissolving the polycarbonate is provided. Printing ink or printing lacquer according to one of the preceding claims, characterized in that the radiation-curable monomers are UV and / or electron beam curable.

Printing ink or printing varnish according to one of the preceding claims, characterized in that the printing ink or the printing varnish contains photoinitiators.

Printing ink or printing varnish according to one of the preceding claims, characterized in that the printing ink or the printing varnish is resistant to high temperatures and flexible.

Printing ink or printing ink according to one of the preceding

Claims, characterized in that the polycarbonate is thermoplastic.

Printing ink or printing varnish according to one of the preceding claims, characterized in that the polycarbonate has a molecular weight M _w - (weight average) of at least 10,000 and / or contains bifunctional carbonate structural units of the formal (I),

wherein

R ¹ and R ² is hydrogen, halogen, Ci-C ₈ -Alky, C ₅ -C ₆ cycloalkyl, C ₆ -C ₀ aralkyl, m is an integer from 4 to 7, R ³ and R ⁴ individually for each X independently selectable hydrogen or C ₁ -C ₆ -alkyl and

X is carbon, with the proviso that on at least one atom X, R ³ and R ^{4 are} simultaneously alkyl.

9. Printing ink or printing varnish according to claim 8, characterized in that the polycarbonate contains at least 30 mol% of the bifunctional carbonate structural unit of the formula (I).

10. Printing ink or printing varnish according to one of the preceding claims, characterized in that the polycarbonate has a molecular weight M _w (weight average) of 10,000 to 300,000.

11. Printing ink or printing varnish according to one of the preceding claims, characterized in that the polycarbonate is formed as described in EP 0 688 839 A2.

12. Printing ink or printing varnish according to one of the preceding claims, characterized in that the printing ink or printing varnish at least one additional resin and / or at least one additive and / or at least one filler and / or at least one pigment and / or at least one wax and / or at least one additional bonding agent.

13. Printing ink or printing varnish according to one of the preceding claims, characterized in that the softening temperature of the radiation-cured printing ink or printing varnish <230 ⁰ C, preferably <180 ⁰ C.

14. Printing ink or printing varnish according to one of the preceding claims, characterized in that the polycarbonate is not curable by radiation curing.

15. Use of a printing ink or a printing ink according to one of the preceding claims for screen printing, for offset printing, for rotary screen printing, for digital printing, for flexographic printing, or for inkjet printing.