Infrared-sensitive printing forms developed in printing machine with usage of bonding resins with polyethylene-epoxide segments

FIELD: negative printing forms developed in printing machine, which may be exposed by ultraviolet, visible or infrared radiation.

SUBSTANCE: cover-forming composition is described, which includes (i) polymerization-capable compound and (ii) polymer binding agent, containing polyethylene-epoxide segments, where polymer binding agent is selected from group which consists of at least one added copolymer, containing polymer of the main chain and polyethylene-epoxide side chains, block copolymer, containing at least one polyethylene-epoxide block and least one non polyethylene-epoxide block, and combinations of these. Also described is an element, in which image may be formed, including base and polymerization-capable covering composition.

EFFECT: differentiation between image sections exposed and non-exposed by electromagnetic radiation, facilitating development of non-exposed sections in water developing agents, increased resistance to development of exposed sections, ensured coloration capacity of the latter when not heated before development.

5 cl, 3 dwg, 11 ex

 

Background of invention

1. The technical field to which the invention relates.

The present invention relates to exercise negative in the printing machine printed forms, which can be exposed to UV, visible and infrared radiation. In particular, the present invention relates to printed forms containing a polymeric binder, composed of discrete particles containing polietilenoksidnoy segments.

2. Background of invention

Sensitive to the radiation of the composition is usually used in order to obtain high quality raw materials for printed forms. There are two main ways to improve the properties sensitive to radiation compositions and, therefore, also relevant source materials for printed forms. The first method aims to improve properties are sensitive to the radiation components of the compositions (often negative diazo tar or photoinitiators). Another way is dealing with the improvement of physical properties are sensitive to the emission layer through the application of new polymeric compounds ("glue").

Recent developments in the field of raw materials for printing plates are dealing with sensitive radiation compositions in which it is possible to form the latent image during exposure of the laser or the laser diodes. This type of exposure does not require films as intermediate media, because the lasers can be controlled by computers.

High-performance lasers or laser diodes, which are typically used in commercially available machines for forming images, emit light with a wavelength in the range from 800 to 850 nm and 1060 to 1120 nm, respectively. Therefore, the source materials for printed forms or contained system initiators, which should be formed latent image with the help of these machines, should be sensitive to radiation from the near infrared region. Then with such source materials for printed forms, you can work essentially in daytime lighting conditions, which greatly facilitates their acquisition and processing.

There are two possible ways of utilizing sensitive to radiation compositions for the preparation of printing forms. For negative printing plates used are sensitive to radiation of a composition in which after forming a latent image of the exposure the exposed areas harden. At the stage of manifestation from the base (substrate) removes only the unexposed portions. For positive printing plates used are sensitive to radiation of a composition in which the exposed areas in this developer dissolve faster h is m the unexposed portions. This process is called photocolorimetry.

For negative forms after exposure stage usually requires pre-heating, as described, for example, in EP 0672544, EP 0672954, as well as in U.S. patent No. 5491046 and EP 0819985. For such forms required preliminary heating in a very narrow temperature range, which can occur only partial crosslinking of the layer with the image. In order to meet the standard requirements regarding the number of copies and resistance to chemicals in the press camera, perform the additional step of heating called zadovolenyam, during which the additional layer is stitched to the image.

In U.S. patent No. 4997745 describes photosensitive compositions containing a dye that absorbs in the range of 300-900 nm, and trihalomethyl-s-triazine compound.

In U.S. patent No. 5496903 and DE 19648313 describes photosensitive compositions which, in addition to the dye absorbing in the infrared region, containing the borate coinitiator; also describes halogenated s-triazine as an additional coinitiator.

Other photopolymerizing composition systems initiators are described in U.S. patent No. 5756258, U.S. patent No. 5545676, U.S. patent No. 5914215, JP 11-038633, JP 09-034110, U.S. patent No. 5763134 and EP 0522175.

In U.S. patent No. 6245486 describes sensitive to what zlucenie printing form, including the form shown in the printing machine. However, in this patent requires the composition with the mask layer, capable of ablation of the infrared radiation over available for UV negative layer, which can be manifest in the printing machine and which is capable of free radical polymerization.

In U.S. patent No. 6245481 disclosed capable of ablation IR radiation and UV curable two-layer compositions that require IR exposure after exposure to UV.

In U.S. patent No. 5599650 revealed intended for UV exposure of the negative shown in the printing machine printing form obtained on the basis of free radical polymerization. According to this patent, the protective layer is required polymer-quencher of free radicals to relieve symptoms, and specifically, such a polymer contains nitroxide group.

In U.S. patent No. 6071675 disclosed a printed form, such printed forms of U.S. patent No. 5599650, but additionally require the addition of dispersed solid particles in the layer in which is formed the image for better expression in the printing machine or to reduce stickiness.

In U.S. patent No. 6309792 and WO 00/48836 describes the IR-sensitive composition containing a polymeric binder system capable of free-radical gender is merisalo, and specific ioniziruushei system. For the compositions according to WO 00/48836 required stage pre-heating after exposure for sufficient curing of the compositions. The raw materials for printed forms should appear aqueous developer.

In the application for U.S. patent, serial No. 09/832989 (registry attorney KPG 1109), describes the IR-sensitive composition containing leucocrystal added to the dyes described in U.S. patent No. 6309792 and WO 00/48836. On the application for U.S. patent, serial No. 09/832989 requires stage pre-heating after IR exposure and the stage of the water manifestations for processing.

In U.S. patent No. 5204222 describes a composition comprising a able to cure ingredients in combination with a polymeric binder containing a polyurethane main chain. Side chains of a polymer binder does not contain polietilenoksidnoy chains.

In U.S. patent No. 5800965 describes a composition suitable for flexographic printing plates containing monomers, poly (ethylene glycol as capable of polymerization components.

In U.S. patent No. 6037102, which also relates to flexographic printing forms, describes photopolymerizable compositions containing grafted copolymer with chains of polyvinyl alcohol grafted to polietilenoksidnoy (REO) of the main circuit of polim the RA.

In EP 1117005 disclosed photopolymerizing compounds containing polietilenoksidnoy chain with 1-10 ethylenoxide links. The invention provides the use of polymers containing one ethylenoxide link. When the number ethylenoxide links over ten fall both the resolution and the resistance of solidified products. A binder resin with a fairly long REO-segments according to the present invention are not disclosed.

At the same time a pending application for U.S. patent, serial No. 09/826300 discloses graft copolymers containing polietilenoksidnoy side chains, but no mention of the composition containing capable of polymerization components or hydrophobic segment between polietilenoksidnoy segment and the main chain and a hydrophobic segment at the ends polietilenoksidnoy side chains.

In co-pending application for U.S. patent, serial No. 10/066874 (registry attorney KPG 1164), disclosed polymers and copolymers simple polyalkyleneglycol, including block copolymers of polyethylene oxide and polypropyleneoxide. However, simple polyalkylene and copolymers, are described in the concurrently pending application, do not provide sufficient differentiation for the manifestation of unexposed areas and durability of exposed areas with the generated image is agenies.

None of the aforementioned patents do not describe capable of polymerization composition containing a binder resin with REO-segments according to the present invention.

Therefore, the present invention satisfies the existing techniques need to print the form and manner of obtaining the printed forms, which do not require preliminary heating stage or manifestation. As a result of extensive research found that they are capable of polymerization compositions containing certain polymeric binder based on discrete particles (binder) contain polietilenoksidnoy (REO) segments easily occur in aqueous developers, including manifest in the printing machine moisturizing solution and printing ink. In addition, after forming the latent image of the exposure to electromagnetic radiation in the ultraviolet, visible or infrared spectral region exposed areas resistant to belong and serve as a solid receiving a dye image areas without the need for stage heating before manifestation. Thus, unexpectedly discovered that certain polymeric binder containing REO-segments, enhance differentiation exposed and unexposed areas, facilitating the manifestation of the unexposed areas Nar is do with increasing the strength of the exposed areas of the image.

Summary of the invention

Thus, the aim of the present invention is capable of curing a composition comprising a capable of curing compound and from about 10 to about 90 wt.% a polymeric binder, where the polymeric binder selected from the group consisting of at least one graft copolymer containing the polymer main chain and polietilenoksidnoy side chains, a block copolymer containing at least one polietilenoksidnoy block and at least one non-polietilenoksidnoy unit, and combinations thereof; and where the composition is capable of polymerization, contains discrete particles of a grafted copolymer or a block copolymer.

Another objective of the present invention is the element in which it is possible to form an image, comprising a) a base and (b) capable of curing the composition applied to the substrate, and capable of polymerization, the composition contains (i) capable of polymerization compound and (ii) from about 10 to about 90 wt.% a polymeric binder; where the polymeric binder selected from the group consisting of at least one graft copolymer containing the polymer main chain and polietilenoksidnoy side chains, a block copolymer containing at least one polietilenoksidnoy block and at least one non-polyethylene is oxide block, and combinations thereof; and where capable of polymerization composition comprises discrete particles of a grafted copolymer or a block copolymer. Preferably, the element in which it is possible to form the image, you can exhibit one type of radiation from a number of ultraviolet, visible and infrared radiation.

Another objective of the present invention is a method of obtaining manifested in the printing machine negative printing plate, comprising (a) providing the base; (b) applying on the basis of acting as a negative layer containing sensitive to radiation performance-sensitive composition contains a radiation capable of curing compound and a polymeric binder, where the polymeric binder selected from the group consisting of at least one graft copolymer containing polietilenoksidnoy side chains, a block copolymer containing at least one polietilenoksidnoy unit, and combinations thereof, and where sensitive to radiation, the composition comprises discrete particles of a grafted copolymer or a block copolymer; (C) exposure for forming a latent image acting as a negative layer of ultraviolet, visible or infrared radiation; and (d) the manifestation in the printing machine, where the method does not include a separate stage proyavlena is.

The invention allows obtaining manifested in the printing machine or in aqueous developers lithographic printing plates, in which the image can be formed by using a framework for UV exposure, infrared laser photo machines and operating in the visible region of light automatic repeaters that carry the computer image on the form. This invention also relates to materials for printing plates, which are sensitive to laser radiation, which form a digital image that you can show in the printing machine, and due to this eliminated a separate stage of manifestation.

Brief description of drawings

Figure 1 shows obtained in the scanning electron microscope ("SEM") image of the coating of example 7 in this description.

Figure 2 shows obtained in the scanning electron microscope ("SEM") image of the coating of example 9 in this description.

Figure 3 shows obtained in the scanning electron microscope ("SEM") image of the coating of example 10 in this description.

Detailed description of the invention

Capable of curing compound present in the compositions of the invention preferably contains the capable of curing a group selected from among capable of polymerization by joining ethylenediamino group, im the Noi to cross-stitching ethylenediamino group, groups capable of polymerization with the disclosure of the cycle, sidegroup, groups, salts of aryldiazonium, aryldiazoacetates groups and their combinations.

Capable of polymerization by joining Ethylenediamine group may polymerization by the method of free radical polymerization, cationic polymerization or a combination thereof. Capable of free radical polymerization attach ethylenediamino group is chosen, preferably, from the group consisting of methacrylate groups, acrylate groups, and combinations thereof. Capable of cationic polymerization attach ethylenediamino group is chosen, preferably, from the group consisting of vinyl ether, vinylaromatic compounds, including styrene and alkoxybenzenes styrene, and combinations thereof.

Able to cross-stitching ethylenediamino group is chosen, preferably, from the group consisting of dimethylacetamide group, balkanboy group and cinnamate group.

The group capable of polymerization with the disclosure of the cycle is chosen, preferably, from the group consisting of epoxide, oxetane and their combinations.

Capable of curing compound of the invention is present in a quantity sufficient to give the composition the properties of insolubility in aqueous developer after exposure radiation. Of mass regard the group of polymerizable compounds to the polymer binder ranges from about 5:95 to 95:5, preferably from about 10:90 to about 90:10, preferably from about 20:80 to about 80:20, most preferably from about 30:70 to about 70:30.

Capable of polymerization, the composition preferably contains capable of free radical polymerization attach composition, including capable of polymerization Ethylenediamine connection and photoinitiator system for generating free radicals. Capable of polymerization, the composition may also contain a polymerizable compound containing at least two tirinya group. You can use photoinitiated system, active against electromagnetic radiation in the ultraviolet, visible and/or infrared spectral regions, corresponding to the spectral region around 300-1400 nm. Such photoinitiated systems include trichlorotriazine, by themselves or in combination with a photosensitizer, for example, as described in U.S. patent No. 4997745; salt diarylethene and the photosensitizer as described in U.S. patent No. 5546258; spectral sensitizers for activation in the visible region together with trichlorotriazine, as described, for example, in U.S. patent No. 5599650; 3-catechumeni for activation in the ultraviolet and visible region together with coinitiators - polycarboxylic acid, such as aniline-N,N-acetoxy the traveler acid, and the second coinitiators, such as salt diarylethene, titanocene, galogenangidridy, hexaarylbenzene, salt, borates and photooxidant containing a nitrogen atom in the heterocycle, substituted alkoxy - or alloctype, as described in U.S. patent No. 5942372; cyanine dye, salt diarylethene and coinitiator containing carboxylate group attached through a methylene group to the group of N, O or S, which is directly attached to the aromatic cycle, as described in U.S. patent No. 5368990; cyanine dye to activate in the field of infrared radiation together with trichlorotriazine and organoboron salt as described in U.S. patent No. 5496903; absorber of infrared radiation is a compound capable of forming an initiating free radical, including trichlorotriazine and connection azine, and coinitiator - polycarboxylic acid containing carboxylate group attached through a methylene group to the group of N, O or S, which is directly attached to the aromatic cycle, as described in U.S. patent No. 6309792.

Preferred photoinitiated systems include an absorber of ultraviolet, visible or infrared radiation, electron acceptor capable of initiating free radicals, and coinitiator able to give electron and/or Alamogordo and/or to form an initiating free radical. The number of the absorber of radiation is the amount necessary to make the composition insolubility in aqueous developer after exposure radiation. Preferably, the concentration of the absorber of radiation is in the interval that the molar absorption coefficient in the range of from about 0.05 to 3 mol·l-1·cm-1preferably from about 0.1 to 1.5 mol·l-1·cm-1preferably from about 0.3 to 1.0 mol·l-1·cm-1.

Preferred IR-absorbers for photo/thermal activation are squarewave dyes, crotonate dyes, triarylamine dyes, thiazoline dyes, indoniesia dyes, oxazoline dyes, cyanine and merocyanine dyes, polyaniline dyes, polypyrrole dyes, polythiophene dyes, halogenopyrimidines and bis(chalcographie)polymethine dyes, oceandrive dyes, prelievi dyes and phthalocyanine pigments. Other suitable classes include Solenoye and xanthene dyes, and carbon black, metal carbides, borides, nitrides, carbonitrides and oxides with structures bronzes. Especially preferred cyanine dyes.

In another embodiment capable of polymerization, the composition preferably contains ondensate salt of aryldiazonium or a mixture of salts of aryldiazonium connection, capable of condensation. The compound capable of condensation, preferably selected from the group consisting of aldehydes, biotoxicological ether and mixtures thereof. Composition capable of polymerization, containing condensate salt of aryldiazonium, preferably, also contains moreactionsmenu binder.

Containing condensed aryldiazonium capable of polymerization composition may also contain a composition capable of free radical polymerization accession, including those capable of polymerization Ethylenediamine connection, and photoinitiator system for initiating generation of free radicals, as described above. Such compositions are known as diazophotopolymeric hybrid composition.

Capable of polymerization, the composition of the invention contains the capable of curing compound and a polymeric binder containing polietilenoksidnoy segments, where the polymeric binder is chosen from among the graft copolymers of the polymer main chain and polietilenoksidnoy (REO) side chains and block copolymers containing blocks of REO along with blocks other than REO, "non-REO blocks.

Preferably, graft and block copolymers are amphiphilic, meaning they contain both hydrophilic and hydrophobic segments. Such amphiphilic copolyme is s also have a tendency to be surface-active. Segments REO are hydrophilic. Without going into any theory, I believe that the combination of hydrophilic and hydrophobic segments is important to enhance the differences between exposed and unexposed areas.

The glass transition temperature Tgthe polymer binder used in this invention preferably ranges from about 35 to about 220°C, preferably from about 45 to about 140°S, most preferably from about 50 to about 130°C. a Polymeric binder with the values of Tgin the interval, specified above, is a solid and, preferably, is not an elastomer. The polymer binder may be crosslinked, but, preferably, are unstitched. The glass transition temperature Tgpolymer main chain of the grafted copolymer and the non-REO block blockcopolymer, preferably, ranges from about 40 to about 220°C, preferably from about 50 to about 140°S, most preferably from about 60 to about 130°C.

Preferably, graft and block copolymers have srednecenovogo molecular weight of from about 2000 to about 2000000. Preferably, Brednikova molecular weight (Mn) REO segments ranges from about 500 to about 10,000, preferably from p is IMEMO 600 to about 8000, most preferably from about 750 to about 4000. When the value of Mn is less than 500, the hydrophilic segment is lacking for adequate promotion of the ability to manifest. However, the absorption of printing ink in the image areas tends to decrease with increasing values of Mn polietilenoksidnoy segments, reaching 10000.

The number of REO segments grafted copolymers ranges from about 0.5 to about 60 wt.%, preferably from about 2 to about 50 wt.%, preferably from about 5 to about 40 wt.%, most preferably from about 5 to about 20 wt.%. The number of REO segments in the copolymers ranges from about 5 to about 60 wt.%, preferably from about 10 to about 50 wt.%, preferably from about 10 to about 30 wt.%. At low concentrations of REO segments in vaccinated and copolymers ability to manifest tends to decrease, while the high content tends to decrease the absorption of printing ink in the image areas.

The polymeric binder is present in an amount sufficient to make the composition capable of photopolymerization, solubility or dispersive ability of the pigment in an aqueous developer. The amount of polymeric binder ranges from about 10 wt.% to about 90 wt.%, predpochtitel is about from about 30 wt.% to about 70 wt.%. The ability to manifest in aqueous developers tends to increase with increasing the content REO segments in the polymer binder. However, at very high content of REO tends to decrease the absorption of printing ink.

Preferably, the grafted copolymer has a main chain of a hydrophobic polymer and a lot of side groups represented by the formula

-Q-W-Y,

where Q represents a bifunctional coupling group; W is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment; Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment; with the proviso that when W is a hydrophilic segment, Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment; and provided that when W is hydrophobic, Y is a hydrophilic segment.

The term "grafted" polymer or copolymer in the context of the present invention refers to a polymer that as the side chain contains a group with a molecular weight of at least 200. This grafted copolymer can be obtained, for example, anionic, cationic, non-ionic or free radical methods of vaccination, or it can be obtained by polymerization or copolymerization of monomers containing such groups. The term "polymer" in the context of altoadige invention relates to high - and low-molecular-weight polymers, including oligomers, and includes homopolymers and copolymers. The term "copolymer" refers to polymers derived from two or more different monomers. The term "main chain" in the context of the present invention refers to a chain of atoms in the polymer, to which are attached many side groups. An example of such main circuit is completely carbon main chain, obtained by polymerization refinancing monomer.

Grafted copolymer preferably contains the repeating unit, where each link is represented by the formula

where each R1and R2chosen, independently, from the group consisting of H, alkyl, aryl, aralkyl, alkaryl, COOR5, R6CO, halogen and cyano;

Q is chosen from the group consisting of

where R3selected from the group consisting of H and alkyl; R4selected from the group consisting of H, alkyl, halogen, cyano, nitro, alkoxy, alkoxycarbonyl, acyl and their combinations;

W is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment;

Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment;

Z is chosen from the group consisting of H, alkyl, halogen, cyano, acyloxy, alkoxy, alkoxycarbonyl, hydroxycorticosterone, acyl, AMI is carbonyl, aryl and substituted aryl;

provided that when W is a hydrophilic segment, Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment, and also provided that when W is hydrophobic, Y is a hydrophilic segment.

In one embodiment of the grafted copolymer of the present invention contains the segments of the main chain, which is predominantly hydrophobic, and the side segments, which is predominantly hydrophilic.

In another embodiment of the grafted copolymer contains segments of the main chain, which is predominantly hydrophobic, and side segments, including both hydrophobic and hydrophilic segments.

The hydrophilic segment in W in grafted copolymer of the present invention is, preferably, a segment represented by the formula

or

where each of R7, R8, R9and R10represents hydrogen; R3can represent H or alkyl; and n equal to the number of from about 12 to about 250. The hydrophobic segment in W can be a-R12-, -O-R12―O-, -R3N-R12-NR3-, ―OOC-R12―O - or-OOC-R12―O-, where each R12can represent, independently, a linear, razvetvlenno the th or cyclic alkylene with 6-120 carbon atoms, halogenation with 6-120 carbon atoms, aralen with 6-120 carbon atoms, elkarren with 6-120 carbon atoms or kalkeren with 6-120 carbon atoms; and R3can represent H or alkyl.

The hydrophilic segment in Y can represent H, R15, OH, OR16, COOH, COOR16O2CR16or the segment represented by the formula

or

where each of R7, R8, R9and R10represents hydrogen; R3can represent H or alkyl; where each of R13, R14, R15and R16can represent, independently, H or alkyl with 1-5 carbon atoms and n equal to the number of from about 12 to about 250. The hydrophobic segment in Y can be a linear, branched or cyclic alkyl with 6-120 carbon atoms, halogenated with 6-120 carbon atoms, aryl with 6-120 carbon atoms, alkaryl with 6-120 carbon atoms, aralkyl with 6-120 carbon atoms, OR17, COOR17or O2CR17where R17represents alkyl with 6 to 20 carbon atoms.

In the preferred embodiment of the grafted copolymer contains the repeating unit represented by the formula

where each R1and R2can represent, independently, H, alkyl, aryl, aralkyl, al is aryl, COOR5, R6CO, halogen or cyano;

where Q can represent one of the groups

and where R3can represent H or alkyl; R4can represent, independently, H, alkyl, halogen, cyano, nitro, alkoxy, alkoxycarbonyl, acyl or combinations thereof;

W is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment;

Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment;

Z is chosen from the group consisting of H, alkyl, halogen, cyano, acyloxy, alkoxy, alkoxycarbonyl, hydroxycorticosterone, acyl, aminocarbonyl, aryl and substituted aryl where the substituent in the above-mentioned substituted aryl can be an alkyl, halogen, cyano, alkoxy or alkoxycarbonyl, and the alkyl group is preferably alkyl with 1-22 carbon atoms;

provided that when W is a hydrophilic segment, Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment, and also provided that when W is hydrophobic, Y is a hydrophilic segment.

Segment W can be a hydrophilic segment or a hydrophobic segment, where the hydrophilic segment may be a segment represented by the formula

or

where each of R7, R8, R9and R10represents hydrogen; R3can represent H or alkyl and n equal to the number of from about 12 to about 250. The hydrophobic segment can be a-R12-, -O-R12-O-, -R3N-R12-NR3-, -OOC-R12-O - or-OOC-R12-O-, where each R12can represent, independently, a linear, branched or cyclic alkylene with 6-120 carbon atoms, halogenation with 6-120 carbon atoms, aralen with 6-120 carbon atoms, elkarren with 6-120 carbon atoms or kalkeren with 6-120 carbon atoms; and R3can represent H or alkyl.

Y can be a hydrophilic segment or a hydrophobic segment, where the hydrophilic segment may represent H, R15, OH, OR16, COOH, COOR16O2CR16or segment represented by the formula

or

where each of R7, R8, R9and R10represents hydrogen; R3can represent H or alkyl; where each of R13, R14, R15and R16can represent H or alkyl with 1-5 carbon atoms and n equal to the number of from about 12 to about 250. The hydrophobic segment in Y can be represented as l is many, branched or cyclic alkyl with 6-120 carbon atoms, halogenated with 6-120 carbon atoms, aryl with 6-120 carbon atoms, alkaryl with 6-120 carbon atoms, aralkyl with 6―120 carbon atoms, OR17, COOR17or O2CR17where R17can represent alkyl with 6 to 20 carbon atoms.

In another preferred embodiment, the segment W-Y can be represented by the formula

where n is equal to the number of from about 12 to about 75. In this preferred embodiment of the grafted copolymer contains, for example, the repeating unit represented by the formula

where n is equal to the number of from about 12 to about 75. Preferably, n has an average value of about 45.

In another preferred embodiment of the grafted copolymer contains, for example, the repeating unit represented by the formula

where n is equal to the number of from about 12 to about 75, and preferably, n has an average value of about 45.

In one preferred embodiment the polymer main chain of the graft copolymer of the invention contains units of monomers selected from the group consisting of acrylates, methacrylates, styrene, acrylic acid, methacrylic acid and combinations thereof. Preferred monomer units are cabinetnametemplate, alismataceae or combinations thereof.

Grafted copolymer containing hydrophobic and/or hydrophilic segments can be obtained by a process comprising the stages:

(A) bringing into contact the following components with the formation capable of polymerization of the grafted copolymer:

(i) compounds represented by the formula

where W is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment, and Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment, with the proviso that when W is a hydrophilic segment, Y is chosen from the group consisting of a hydrophilic segment and a hydrophobic segment, and also provided that when W is hydrophobic, Y is a hydrophilic segment, and

(ii) a polymerizable monomer selected from the group consisting of compounds represented by formulas

and

where each R1chosen, independently, from the group consisting of H, alkyl, aryl, aralkyl, alkaryl, COOR5, R6CO, halogen and cyano; R4selected from the group consisting of H, alkyl, halogen, cyano, nitro, alkoxy, alkoxycarbonyl, acyl, and combinations thereof; and X represents glycidyloxy or delete a group selected from the group, with Toyama from halogen, alkoxy or aryloxy, obtaining capable of polymerization of the grafted monomer; and

(B) copolymerization capable of polymerization of the grafted monomer and one or more comonomers at a temperature and for a time sufficient to graft copolymer. If necessary, the stage contacting is carried out in the presence of a catalyst.

Preferably, comonomer is one or more monomers from among styrene, substituted styrene, alpha-methylstyrene, acrylate, methacrylate, Acrylonitrile, acrylamide, methacrylamide, vinylchloride, vinyl ester, simple vinyl ester and alpha-olefin.

The preferred monomer capable of polymerization may be any monomer capable of interacting with H-W-Y, and includes capable of polymerization monomers, such as m-Isopropenyl-α,α-dimethylbenzylidene, akriloilkhlorida and methacryloylamido. Interaction, as a rule, is carried out in the presence of a catalyst, which is preferably a base, a compound of tin, or their mixture. During the interaction, allowing the use of an acid catalyst, it is possible to use such an acid catalyst, as a Lewis acid or a proton acid.

Preferably, the connection, as the e formula H-W-Y, can be one or more compounds represented by the formula

and

where each of R7, R8, R9and R10represents hydrogen; R3can represent H or alkyl; Y can be an alkyl, acyloxy, alkoxy or carboxylate and n equal to the number of from about 12 to about 250.

Grafted copolymer usually get free-radical graft copolymerization of monomer and co monomer, preferably, when the mass ratio of co monomer to graft the monomer is from about 99:1 to about 45:55.

Alternatively, the grafted copolymer can be obtained by first carrying out the copolymerization able to polymerization of the monomer of the present invention with one or more comonomers at a temperature and for a time sufficient to obtain a copolymer capable of vaccination, and then inoculating a group-W-Y copolymer, capable of instilling. Such grafting can be achieved by bringing into contact in the presence of a catalyst of the above copolymer, capable of vaccination, and the compound represented by the formula

where W can be a hydrophilic segment or a hydrophobic segment, and Y may be a hydrophilic segment and guide opony segment, provided that when W is a hydrophilic segment, Y is a hydrophilic segment or a hydrophobic segment, and also provided that when W is hydrophobic, Y is a hydrophilic segment.

The grafted copolymers of the present invention can be obtained by the interaction hydroxyquinoline or aminofunktionelles simple monoalkyl esters of polyethylene glycol with polymers having correctionsspovolny groups, including chloranhydride, isocyanate and anhydrite group. Side chains can optionally contain a hydrophobic segment between REO-segment and the main chain and a hydrophobic segment at the end of the side chains REO. Other ways of obtaining graft copolymers of the present invention include the methods described in application for U.S. patent, serial No. 09/826300, which currently issued U.S. Patent No. 6582882.

The polymer main chain of the grafted copolymer may be a polymer obtained stepwise polymerization of (additive), or a condensation polymer. Additive polymers receive, preferably, from acrylates and methacrylates, acrylic and methacrylic acid, acrylamides and methacrylamides, Acrylonitrile and Methacrylonitrile, styrene, vinylphenol and their combinations. Preferably, the additive polymers derived from styrene, is amylmetacresol, allylacetate and methacrylate, acrylic and methacrylic acid and their combinations. Preferably, the condensation polymers are polyurethanes, epoxies, polyesters, polyamides and phenolic polymers, including phenol-formaldehyde and progelatinase polymers.

The polymeric binder may also contain a mixture of graft copolymers, and each contains a polymer main chain and polietilenoksidnoy side chains. The polymer main chain of each of the grafted copolymer is chosen, independently, from among the additive polymer and condensation polymer. The preferred additive polymers are the homopolymers and copolymers of monomers selected, independently, from the group consisting of acrylates and methacrylates, including allylacetate and methacrylate, acrylic and methacrylic acid, acrylamides and methacrylamides, Acrylonitrile and Methacrylonitrile, styrene, vinylphenol and their combinations. Preferred condensation polymers are chosen, independently, from polyurethanes, epoxy resins, polyesters, polyamides and phenolic polymers, including phenol-formaldehyde and progelatinase polymers.

The block copolymers of the present invention can be obtained by the conventional procedures, including anionic, cationic and free radical polymerization. In h is particularly convenient ways can be radical polymerization atom transfer (ATRP) and polymerization transfer circuit with the reversible addition-fragmentation (RAFT). REO-block copolymers usually get ATRP methods described in M. Ranger et al., "From well-defined diblock copolymers prepared by a versatile atom transfer radical polymerisation method to supramolecular assemblies", Journal of Polymer Science, part a: Polymer Chemistry, volume 39 (2001), SS. 3861-74.

At least one non-polietilenoksidnoy block block copolymers can be an additive polymer or condensation polymer. Additive polymers are preferably homopolymers or copolymers of monomers selected from acrylates and methacrylates, including, allylacetate and methacrylate, acrylic and methacrylic acid, acrylamides and methacrylamides, Acrylonitrile and Methacrylonitrile, styrene and vinylphenol. Preferred condensation polymers are polyurethanes, epoxies, polyesters, polyamides and polyureas.

In one preferred embodiment of the invention, at least one non-polietilenoksidnoy block block copolymers does not contain polyalkylbenzene segments. In another preferred embodiment, at least one non-polietilenoksidnoy block contains homopolymers or copolymers of monomers selected from the group consisting of methyl methacrylate, Allier the lats and methacrylate, acrylic and methacrylic acid, styrene, vinylphenol and their combinations.

The polymer binder may contain a mixture of block copolymers, and each contains at least one REO-block and at least one non-REO-block described above. In addition, the polymer binder may contain a mixture of graft copolymer and block copolymers, as described above.

Composition capable of polymerization, contains discrete particles of a grafted copolymer or a block copolymer. The particles can include a mixture of copolymers containing different possible combinations of monomer units. Discrete particles are particles of a polymer binder suspended in the composition capable of polymerization. In a particularly preferred embodiment the polymeric binder contains at least one grafted copolymer. The diameter of the particles in the slurry can range from about 60 nm to about 300 nm. The presence of discrete particles is reflected in the improved ability to manifest unexposed areas.

The basis of the element in which you can get the image, is usually a sheet of aluminum. However, you can also use other materials, which are usually well-known specialists in this field of technology. Suitable bases include any sheet material that is typically used to receive lithographic printing plates, including metals, such as aluminum sheets; paper; paper coated on one or both sides of the α-olefinic polymer such as polyethylene; film such as a film of cellulose acetate, polivinilatsetalnye film, polystyrene film, polypropylene film, complex film of polyester such as terephthalate film, polyamide film, polyimide film, cellulose nitrate film, polycarbonate film, polyvinylchloride film; composite films such as polyester, polypropylene or polystyrene film coated with polyethylene film; metallized paper or film; laminates metal/paper and such materials.

The surface of plastic films can be processed using known in the art methods of surface treatment to improve adhesion between the substrate and the organic coating.

The preferred base is an aluminum sheet. The surface of the aluminum sheet can be treated by the methods of finishing of metals, known in the art, including, giving the roughness of the physical, electrochemical and chemical methods, anodizing and sealing pores silicates, and the like methods. If the surface is rough, the average roughness (Ra) is preferably in the range from 0.1 to 0.8 μm, and prepost thainee in the range of from about 0.1 to about 0.4 μm. The preferred thickness of the aluminum sheet is in the range from roughly 0.005 to about 0.020 inch. The preferred base is electrochemically granulated and anodized aluminum, the kind usually used for lithographic printing plates.

The pore size after anodizing with sulfuric acid is typically less than 20 nm, whereas the anodizing with phosphoric acid usually exceeds 30 nm. The use of anodized bases with a large pore size, as the anodized with phosphoric acid, is preferable to the basics, anodized with sulfuric acid. It is also possible to use other conventional methods of anodizing the basis of the present invention, including, in particular, the ways in which the pore size greater than the pore size obtained by anodizing with sulfuric acid.

The polymer binder may be applied to the basis in the form of a solution or dispersion in a liquid composition for applying a layer forming the image, the conventional coating. An illustration of this method is the dissolution of the grafted copolymer in an organic water-immiscible solvent, dispersing the resulting solution in water, applying the resulting dispersion on the basis of and subsequent removal of the solvent by evaporation. After proper drying, the weight of the coating layer nah who is, preferably, in the range of from about 0.2 to about 5.0 g/m2, preferably in the range of from about 0.7 to about 2.5 g/m2.

Preferably, the exposing is carried out using an infrared laser and absorber of radiation for absorption of infrared radiation. However, you can also use the exposure laser operating in the UV and visible region, together with the corresponding absorber of radiation. Accordingly, the composition of the present invention, in which it is possible to form an image, can also contain a radiation absorber, which can serve as a sensitizer for promotion polymerization or as a material capable of converting electromagnetic radiation into heat.

The element in which it is possible to form the image may also contain a protective layer. One of the possible functions of the protective layer is a function of the barrier layer due to the inclusion of connection, which is impervious to oxygen. The term "impermeable to oxygen compound" is intended to denote a compound that inhibits the diffusion of oxygen from the atmosphere into the layer during the lifetime of the radicals generated by exposure to IR. The protective layer should be soluble, dispersible or at least permeable to the developer. Other possible what the functions of the protective layer are:

(1) prevent damage, such as scratching, the surface layer while working with him before exposure to obtain a latent image;

(2) prevent damage to the surface of the exposed areas of the latent image, for example, due to overexposure, which can lead to partial ablation; and

(3) relief of symptoms unexposed areas.

Preferably, the stage of exposure to obtain a latent image according to the invention is carried out using radiation in the range of from about 300 to about 1400 nm, preferably from about 350 to about 900 nm.

Preferably, the manifestation of the aqueous developer is not a separate stage of manifestation. The printing plate can be installed directly to the printing machine, where the unexposed portions are removed moisturizing solution and/or printing ink, thereby eliminating a separate stage of manifestation. It should be noted that the forms designed for the manifestation in the printing machine, it is also possible to show in the usual way using a suitable aqueous developer. Forms disclosed in this invention, include the forms shown in the printing machine, as well as forms, suggesting other ways of manifestation.

The composition of water of the developer depends on the nature of the composition Pref is the copolymer. Normal water components developers are surface-active substances, hepatoblastoma substances, such as salts of ethylenediaminetetraacetic acid, organic solvents such as benzyl alcohol, and alkaline components, such as inorganic metasilicates, organic metasilicates, hydroxides and bicarbonates. The pH of the aqueous developer is preferably in the range from about 5 to about 14, depending on the nature of the composition of the grafted copolymer.

After developing to increase the lifetime of the printing machine can be used zadubovie.

In addition to the layer in which it is possible to obtain an image of thermal method, the element in which it is possible to obtain a thermal image may have additional layers, such as a sublayer. Possible functions of the sublayer are:

(1) strengthening capacity for manifestation of the unexposed areas of the latent image; and

(2) act as an insulating layer for the exposed areas of the latent image.

Such insulating polymer layer prevents rapid, otherwise, the heat dissipation, for example, through the heat-conducting aluminum base. This creates an opportunity for more effective heat of formation of the image in the layer in which it is possible to obtain image is agenie thermal method, in particular, in the lower parts. In accordance with features such sublayer should be soluble or at least dispersible in the developer and, preferably, to have a relatively low coefficient of thermal conductivity.

Hereinafter the invention is described using the following examples are intended to illustrate but not to limit the invention.

Example 1. Synthesis of macromer 1

In an atmosphere of N2in a 500-ml flask is charged with toluene (266 g) and then add poly(onomatology ether of ethylene glycol) (80 g) (Mn 2000) and metallorganic (4,2 g). Then within 20 minutes, add triethylamine (4.52 g), maintaining the reaction temperature 30°C. after Another 2 hours the temperature of the reaction mixture was raised to 50°C, and the mixture was kept at this temperature for another 2 hours. Then the reaction mixture is cooled to room temperature and filtered to remove the hydrochloride salt of triethylamine, which is formed in a theoretical number. To the filtrate add petroleum ether for precipitation of macromer 1, which is collected by filtration and dried in vacuum at room temperature. The reaction shown in the diagram above. Preferably, the average value of n is approximately equal to 45.

Example 2. Synthesis of graft copolymer 1

Macromer 1 (7.5 g), water (48 g) and 1-propane is (192 g) are loaded into a 500-ml flask, which is heated to 80°C. In a separate Cup mix styrene (66,9 g) and azobisisobutyronitrile (0,48 g) (Vazo-64 from DuPont de Nemours Co.) and part of the resulting solution (12 g) are added to a solution of macromer that for about 10 minutes becomes cloudy. Then within 30 minutes add the remaining solution. After another 3 hours the conversion grafted copolymer 1 is about 97% based on the determination of the percentage content of non-volatile components. The mass ratio of styrene: macromer 1 in grafted copolymer 1 is approximately 90:10.

Example 3. Receiving the printing plate shown in the printing machine

To clean brush on the machine roughened and anodized with phosphoric acid aluminum base sublayer polyacrylic acid the solution is applied as described in table 1, and receive a coating with a dry weight of 2 g/m2.

Table 1

The composition of example 3 (composition in mass parts)
ComponentParts, wt.%
The reaction product DESMODUR® N100 with hydroxyethylacrylate and triacrylate pentaerythritol3,74
Grafted copolymer 13,53
Sartomer 35510,78
2-(4-methoxyphenyl)-4,6-bis(trichloromethyl)-2-triazine 0,42
The aniline-N,N-acetoacetic acid0,23
Dye IR20,09
Byk 30730,02
n-Propanol72,95
Water18,24
1Sartomer 355 is a multifunctional acrylic monomer available from Sartomer Co., Inc.

2The IR dye is a chloride 2-[2-[2-phenylthio-3-[(1,3-dihydro-1,3 .3m-trimethyl-2H-indol-2-ilidene)ethylidene]-1-cyclohexen-1-yl]ethynyl]-1,3,3-trimethyl-3H-indole.

3Byk 307 is a modified polysiloxane, available from Byk Chemie.

Then, the obtained coating is applied to the solution of polyvinyl alcohol (5,26 parts) and polyvinylimidazole (0,93) in isopropanol (3,94 parts) and water (89,87 parts), and get coverage with a dry weight of 2 g/m2. The resulting form exhibit on the Creo Trendsetter h at 250 MJ/cm2and then install directly on the printing press AB Dick. The form gives more than 500 copies of prints of good quality. The second form exhibit on the vacuum frame Olec (incandescent 5 kW to 12 kW/h at medium intensity. Form mounted on the printing machine AB Dick and get more than 500 copies of prints of good quality.

Example 4. Obtaining UV-sensitive printing the first form, shown in the printing machine

Repeat example 3, except that removing the IR dye and does not cause the protective coating. The resulting form exhibit on the vacuum frame Olec (incandescent 5 kW to 6 kW/h at medium intensity. Form mounted on the printing machine AB Dick, and get more than 300 copies of prints of good quality.

Example 5. Obtaining sensitive to visible light printing form shown in the printing machine

To clean brush on the machine roughened and anodized with phosphoric acid aluminum base sublayer polyacrylic acid the solution is applied as described in table 2, and get coverage with a dry weight of 1.3 g/m2.

Table 2

The composition of example 5 (composition in mass parts)
ComponentParts, wt.%
The reaction product DESMODUR® N100 with hydroxyethylacrylate and triacrylate pentaerythritol2,44
Grafted copolymer 12,22
Sartomer 35510,51
Chloride diphenylethane20,29
The aniline-N,N-acetoacetic acid0,23
Catechumen 9340,06
Byk 30730,02
n-Propanol75,38
Water18,85
1Sartomer 355 is a multifunctional acrylic monomer available from Sartomer Co., Inc.

2Chloride diphenylethane from Aldrich.

3Byk 307 is a modified polysiloxane, available from Byk Chemie.

4Catechumen 93 has a structure

Then, the obtained coating is applied to the solution described in example 3, and get coverage with a dry weight of 2 g/m2. The resulting form exhibited at Oriel 1000 W Solar Simulator, model # 81291 (Oriel Instruments, Stratford, CT)equipped with a filter 530 for 5 sec at 4 mW/cm2.

The form is processed in the water bath and a solution of 30% Varn 142W/30% Varn Par and then placed directly on the printing press AB Dick. The form prints more than 500 copies of prints of good quality.

Example 6. Synthesis of graft copolymer 2

The 4-necked flask in a nitrogen atmosphere download deionized water (314,8 g) and sodium dodecyl sulphate (2.0 g) and heated to 70°C. At 70°C for 15 minutes add the previously obtained mixture of ammonium persulfate (0.65 g) and deionized water (20 g). At 70°C for 3 hours add pre-obtained mixture tis the Ola (79,5 g), macromer 1 (10 g) and acrylic acid (7.9 g). Hour and a half to find that the content of non-volatile components of 22.5% vs. 23% (theoretical value). The reaction mixture is cooled to room temperature water. At room temperature add a solution of ammonium hydroxide (8 g) to stabilize the latex.

Example 7. Receiving IR sensitive printing plates

Repeat example 3, except that the protective coating is not applied, and the grafted copolymer 1 replace the grafted copolymer 2 to illustrate the influence of the acid number of the binder. Figure 1 shows the analysis of the obtained coating for scanning electron microscope ("SEM"). As can be seen in figure 1, the coating contains discrete particles. The diameter of the particles is up to about 60 nm.

The resulting form exhibit on the Creo Trendsetter 3244x at 496 MJ/cm2and then set on a printing machine, Komori. Then the form of liquid cleaner for cleaning of printed forms Frisco. The form gives more than 27,500 copies of prints of good quality.

Example 8. Receiving IR sensitive printing plate shown in the printing machine

Repeat example 3, except that the treated brush on rough machine based replace on the canvas, processed by electrochemical method, with a layer of oxide film, condensed polyvinylformal to what slotow.

The resulting form exhibit on the Creo Trendsetter 3244x at 250 MJ/cm2and then install directly on the printing press AB Dick. The form gives more than 500 copies of prints of good quality.

Example 9. Receiving IR sensitive printing plate shown in the printing machine, without protective coating

Repeat example 3, except that it does not cause the protective coating. Figure 2 shows the SEM analysis of the obtained coatings. As can be seen in figure 2, the coating contains discrete particles. The diameter of the particles is up to about 100-200 nm.

The resulting form exhibit on the Creo Trendsetter 3244x at 250 MJ/cm2and then install directly on the printing press AB Dick. The form gives more than 600 copies of prints of good quality.

Example 10. Receiving the printing plate shown in the printing machine

Repeat example 7, except that the graft copolymer 2 is replaced by a combination of graft copolymer 1 (3,35 wt. parts and grafted copolymer 2 (of 0.18 wt. parts). Figure 3 shows the SEM analysis of the obtained coatings. As can be seen in figure 3, the coating contains discrete particles. The diameter of the particles is up to about 100-200 nm.

The resulting form exhibit on the Creo Trendsetter 3244x at 496 MJ/cm2and then set on a printing press AB Dick. The form gives more than 1000 copies of prints of good quality.

Another form, p is obtained and exposed accordingly, set on a printing machine, Komori, supplied by a rigid offset canvas, and ink Equinox. The form gives more than 30,000 copies of prints of good quality.

The example for comparison 1. Getting the IR-sensitive manifested in the printing machine printing plates without a generator of free radicals

Repeat example 3, except that in photopolymerized coverage does not include 2-(4-methoxyphenyl)-4,6-bis(trichloromethyl)-2-triazine.

The resulting form exhibit on the Creo Trendsetter 3244x at 250 MJ/cm2and then install directly on the printing press AB Dick. The coating is completely washed off, and the seal is missing, so as to form no image.

Although the present invention is described in connection with specific examples of its embodiment, it should be borne in mind that it is possible to make various changes, substitutions and variations in the described embodiments without departing from the essence and scope of the invention installed in the accompanying claims.

1. The element in which it is possible to form an image, comprising a base and capable of curing the composition applied to the substrate, and capable of polymerization, the composition contains the capable of curing compound and from about 10 to about 90 wt.% a polymeric binder; where the polymeric binder is chosen from the group Castiadas, at least one grafted copolymer containing the polymer main chain and polietilenoksidnoy side chains, a block copolymer containing at least one polietilenoksidnoy block and at least one non-polietilenoksidnoy unit, and combinations thereof; and where capable of polymerization composition comprises discrete particles of a grafted copolymer or a block copolymer.

2. The element in which it is possible to form an image according to claim 1, where the discrete particles are characterized by a diameter in the range from about 60 nm to about 300 nm.

3. The element in which it is possible to form an image according to claim 1, where polietilenoksidnoy segments polietilenoksidnoy side chains or polietilenoksidnoy block have srednecenovogo molecular weight in the range of from about 500 to about 10,000.

4. The element in which it is possible to form an image according to claim 1 where the polymeric binder is a graft copolymer, and polietilenoksidnoy segments polietilenoksidnoy side chains are present in amounts in the range of from about 0.5 to about 60 wt.%.

5. The element in which it is possible to form an image according to claim 1, where the non-polietilenoksidnoy block of the block copolymer does not contain polyalkylbenzene segments.

6. The element in which it is possible to form an image according to claim 1 where the polymeric binder contains at least one graft copolymer, containing the polymer main chain and polietilenoksidnoy side chains.

7. The element in which it is possible to form an image according to claim 1 where the polymeric binder comprises a mixture of at least two copolymers containing, independently, a grafted copolymer containing the polymer main chain and polietilenoksidnoy side chains, or a block copolymer containing at least one polietilenoksidnoy block and at least one non-polietilenoksidnoy block.

8. The element in which it is possible to form an image according to claim 7, where the polymeric binder comprises a mixture of graft copolymers, each of which contains a polymer main chain and polietilenoksidnoy side chains.

9. The element in which it is possible to form an image according to claim 7, where the mixture of copolymers contains at least one graft copolymer is not in the form of discrete particles.

10. The element in which it is possible to form an image according to claim 1 where the polymeric binder is a block copolymer, and polietilenoksidnoy segments of the block copolymer is present in an amount in the range of from about 5 to about 60 wt.%.

11. The element in which it is possible to form an image according to claim 1, where the element in which it is possible to obtain an image that is sensitive to ultraviolet, visible or infrared radiation.

12. The element in which it is possible to form an image, is about to claim 1, where the compound capable of polymerization, contains capable of polymerization by joining ethylenediamino group capable of cross-stitching ethylenediamino group, a group capable of polymerization with the disclosure of the cycle, asiagraph, a group of salt aryldiazonium, aryldiazomethanes group, or combinations thereof.

13. The element in which it is possible to form an image, para.12, where capable of polymerization by joining ethylenediamino group can be polimerizuet method of free radical polymerization, cationic polymerization or a combination thereof.

14. The element in which it is possible to form an image on section 12, where it is able to cross-stitching ethylenediamino group selected from the group consisting of dimethylacetamide group, balkanboy group and cinnamate group.

15. The element in which it is possible to form an image on section 12, where a group capable of polymerization with the disclosure of the cycle, selected from the group consisting of epoxide, oxetane and their combinations.

16. The element in which it is possible to form an image according to claim 1, where the mass ratio of capable of curing compounds to polymeric binder is in the range from about 5:95 to about 95:5.

17. The element in which it is possible to form an image according to claim 1, where the composition is capable of polymerization, will complement the flax contains a radiation absorber, adapted to absorb electromagnetic radiation in the range of from about 300 to about 1400 nm.

18. The element in which it is possible to form an image, at 17, where the radiation absorber is an absorber of infrared radiation.

19. The element in which it is possible to form an image, at 17, where the composition is capable of polymerization further comprises initiating free radicals system containing an electron acceptor and coinitiator able to give electrons to give the atoms to form hydrogen or a hydrocarbon radical.

20. The element in which it is possible to form an image according to claim 1, where the element in which it is possible to form an image, is the predecessor to the printing form.

21. The element in which it is possible to form the image by claim 20, where the material is the precursor for printing plates adapted for the manifestation in the printing machine.

22. Composition capable of polymerization, capable of containing polymerization compound and from about 10 to about 90 wt.% a polymeric binder, where the polymeric binder selected from the group consisting of at least one graft copolymer containing the polymer main chain and polietilenoksidnoy side chains, a block copolymer containing at least one polietilenoksidnoy block and ENISA least one not-polietilenoksidnoy unit, and combinations thereof; where the composition is capable of polymerization, contains discrete particles of a grafted copolymer or a block copolymer.

23. The composition according to item 22, where the discrete particles are characterized by a diameter in the range from about 60 nm to about 300 nm.

24. The composition according to item 22, where the mass ratio of capable of curing compounds to polymeric binder is in the range from about 5:95 to about 95:5.

25. The composition according to item 22, where the composition is capable of polymerization further comprises a radiation absorber capable of absorbing electromagnetic radiation in the range of about 300-1400 nm.

26. The composition according to item 22, optionally containing an initiating free radical system containing an electron acceptor and coinitiator able to give electrons to give the atoms to form hydrogen or a hydrocarbon radical.

27. The composition according to item 22, where polietilenoksidnoy segments polietilenoksidnoy side chains or polietilenoksidnoy block have srednecenovogo molecular weight in the range of from about 500 to about 10,000.

28. The composition according to item 22, where the polymeric binder contains at least one graft copolymer containing the polymer main chain and polietilenoksidnoy side chains.

29. A method of obtaining a printing form, including on AspectJ the presence of a base; drawing on the basis of acting as a negative layer containing sensitive to radiation performance-sensitive composition contains a radiation capable of curing compound and a polymeric binder, where the polymeric binder selected from the group consisting of at least one graft copolymer containing polietilenoksidnoy side chains, a block copolymer containing at least one polietilenoksidnoy unit, and combinations thereof, and where sensitive to radiation, the composition comprises discrete particles of a grafted copolymer or a block copolymer; the exposure for forming a latent image, acting as a negative layer of ultraviolet, visible or infrared radiation; and the manifestation of acting as a negative layer to obtain a printed form.

30. The method according to clause 29, where the discrete particles are characterized by a diameter in the range from about 60 nm to about 300 nm.

31. The method according to clause 29, where the stage of exposure for forming a latent image is carried out using infrared radiation using an infrared laser.

32. The method according to clause 29, further including the state of zadabrivaniya printing form after the stage of manifestation.

33. The method according to clause 29, where the stage of manifestation is carried out in a printing machine.

34. Pic is b in clause 29, where sensitive to radiation, the composition contains from about 10 to about 90 wt.% a polymeric binder.

35. The method according to clause 29, where the polymeric binder contains at least one graft copolymer containing the polymer main chain and polietilenoksidnoy side chains.

36. The method of producing the element in which it is possible to form an image, comprising providing the foundations and the application on the basis of sensitive to radiation of the composition, and sensitive to the composition contains a radiation capable of polymerization compound, a radiation absorber and from about 10 to about 90 wt.% a polymeric binder selected from the group consisting of at least one graft copolymer containing polietilenoksidnoy side chains, a block copolymer containing at least one polietilenoksidnoy unit, and combinations thereof, where sensitive to radiation, the composition comprises discrete particles of a grafted copolymer or a block copolymer.

37. The method according to p, where stage coating includes drying sensitive to radiation composition.

38. The element in which it is possible to form an image, including the basis and acting as a negative layer, applied on the basis of containing capable of polymerization compound and a polymeric binder selected from a mixture of block sprinklers is Mer, each block copolymer contains at least one polietilenoksidnoy block and at least one non-polietilenoksidnoy block, where acting as a negative layer contains discrete particles of at least one block copolymer of a mixture.

39. The element in which it is possible to form an image, § 38, where the discrete particles of the block copolymer are characterized by a diameter in the range from about 60 nm to about 300 nm.

40. The composition according to item 22, where non-polietilenoksidnoy block of the block copolymer does not contain polyalkylbenzene segments.

41. The composition according to item 22, where the polymeric binder comprises a mixture of at least two copolymers containing, independently, a grafted copolymer containing the polymer main chain and polietilenoksidnoy side chains, or a block copolymer containing at least one polietilenoksidnoy block and at least one non-polietilenoksidnoy block.

42. The composition according to paragraph 41, where the polymeric binder comprises a mixture of graft copolymers, each of which contains a polymer main chain and polietilenoksidnoy side chains.

43. The composition according to paragraph 41, where the mixture of copolymers contains at least one graft copolymer is not in the form of discrete particles.

44. The method according to clause 29, where polietilenoksidnoy segments polietilenoksidnoy side chains or polietilenoksidnoy nl the ka have srednecenovogo molecular weight in the range of from about 500 to about 10,000.

45. The method according to clause 29, where non-polietilenoksidnoy block of the block copolymer does not contain polyalkylbenzene segments.

46. The method according to clause 29, where the polymeric binder comprises a mixture of at least two copolymers containing, independently, a grafted copolymer containing the polymer main chain and polietilenoksidnoy side chains, or a block copolymer containing at least one polietilenoksidnoy block and at least one non-polietilenoksidnoy block.

47. The method according to item 46, where the polymeric binder comprises a mixture of graft copolymers, each of which contains a polymer main chain and polietilenoksidnoy side chains.

48. The method according to item 46, where the mixture of copolymers contains at least one graft copolymer is not in the form of discrete particles.

49. The method according to p where polietilenoksidnoy segments polietilenoksidnoy side chains or polietilenoksidnoy block have srednecenovogo molecular weight in the range of from about 500 to about 10,000.

50. The method according to p, where non-polietilenoksidnoy block of the block copolymer does not contain polyalkylbenzene segments.

51. The method according to p, where the polymeric binder contains at least one graft copolymer containing the polymer main chain and polietilenoksidnoy side chains.

52. The method according to p, where the polymeric binder comprises a mixture of at least two copoly the development, containing, independently, a grafted copolymer containing the polymer main chain and polietilenoksidnoy side chains, or a block copolymer containing at least one polietilenoksidnoy block and at least one non-polietilenoksidnoy block.

53. The method according to paragraph 52, where the polymeric binder comprises a mixture of graft copolymers, each of which contains a polymer main chain and polietilenoksidnoy side chains.

54. The method according to paragraph 52, where the mixture of copolymers contains at least one graft copolymer is not in the form of discrete particles.

55. The method according to p, where the element in which it is possible to form an image, is the source material-the predecessor to the printing form.

56. The method according to § 55, where the source material is the precursor for printing plates adapted for the manifestation in the printing machine.



 

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FIELD: chemistry.

SUBSTANCE: the invention relates to polymer colouring agents used in coating compositions to protect the image forming layer of the offset plates. Described are a new water-soluble polymer colouring agent with the absorption band ranging from about 300 nm to about 600 nm, and a coating composition for a thermographic offset plate which comprises: (a) the said polymer colouring agent with the absorption band ranging from about 300 nm to about 600 nm, and (b) organic microparticles which contain cross-linked copolymers of acrylate ot methylacrylate and styrole, 2-hydroxymethylacrylate, methacrylate, poly(oxyethylene)methacrylate or a linear or branched alkylmethacrylate; or inorganic nanoparticles containing silicone oxide or aluminium oxide. Described is the thermographic offset plate for reverse printing, containing (a) water receptive plate, (b) a layer positioned on the plate which forms the image in the near-infrared region, and (c) the coating layer which is positioned on the image-forming layer and contains the said coating composition.

EFFECT: reduction or elimination of background filling of the offset plates in the conditions of white light, elimination of the need to use separating paper when packaging offset plates.

7 cl, 10 dwg, 13 ex

FIELD: chemistry.

SUBSTANCE: described is a polymerisable iodonium salt containing a positively charged iodine atom bonded with two aryl rings and a negatively charged counter-ion and at least one substitute containing a urethane and/or urea group, which is bonded with at least one of said aryl rings, wherein said substitute contains at least one functional group capable of cationic or radical polymerisation. Described also is a polyvinyl alcohol acetal copolymer containing at least one functional group, which is capable of cationic or radical polymerissation, preferably vinyl ether, alkoxy-methylacrylamide or alkoxy-methacrylamide. The invention also describes polymer binder for coating an offset printing plate from the polyvinyl alcohol acetal family, cellulose ether family and binder based on monomers, each containing at least one functional group capable of cationic or radical polymerisation. Described also is an offset printing plate coating solution containing said polymerisable iodonium salt, said polyvinyl alcohol acetal copolymer and said binder.

EFFECT: high quality of high-resolution image when the offset printing plate is used repeatedly.

17 cl, 25 dwg, 21 ex

FIELD: chemistry.

SUBSTANCE: novel gallotannic compounds include gallotannin, wherein at least one hydroxyl group is substituted with a substitute, said substitute including a molecule, an oligomer or polymer, used in lithographic printing plate coatings, gallotannin or another gallotannin compound, wherein the substitutes are attached to gallotannin directly or through a linking group.

EFFECT: compounds can be used in a lithographic printing plate coating composition.

15 cl, 33 dwg, 49 ex

FIELD: printing industry.

SUBSTANCE: multi-layer lithographic printing form containing an adhesive layer that is accessible and insoluble in (A) oleophilic inks and alkaline or acidic aqueous moisturizing solutions used during printing with a printing form, and (B) alkaline or acidic aqueous developer solutions used during the printed form development. The said adhesive layer is also (I) soluble in an alkaline aqueous treatment solution, if the said developing solutions and the said wetting solutions are acidic, (ii) soluble in an acidic aqueous treatment solution, if the said developing solutions and the said wetting solutions are alkaline, (iii) the fusible or (iv) dry adhesive layer with a Shore A hardness of 60 or less.

EFFECT: said adhesive layer allows for the stratification of the printing form.

20 cl, 6 dwg, 2 tbl

FIELD: negative printing forms developed in printing machine, which may be exposed by ultraviolet, visible or infrared radiation.

SUBSTANCE: cover-forming composition is described, which includes (i) polymerization-capable compound and (ii) polymer binding agent, containing polyethylene-epoxide segments, where polymer binding agent is selected from group which consists of at least one added copolymer, containing polymer of the main chain and polyethylene-epoxide side chains, block copolymer, containing at least one polyethylene-epoxide block and least one non polyethylene-epoxide block, and combinations of these. Also described is an element, in which image may be formed, including base and polymerization-capable covering composition.

EFFECT: differentiation between image sections exposed and non-exposed by electromagnetic radiation, facilitating development of non-exposed sections in water developing agents, increased resistance to development of exposed sections, ensured coloration capacity of the latter when not heated before development.

5 cl, 3 dwg, 11 ex

FIELD: chemistry.

SUBSTANCE: the invention relates to polymer colouring agents used in coating compositions to protect the image forming layer of the offset plates. Described are a new water-soluble polymer colouring agent with the absorption band ranging from about 300 nm to about 600 nm, and a coating composition for a thermographic offset plate which comprises: (a) the said polymer colouring agent with the absorption band ranging from about 300 nm to about 600 nm, and (b) organic microparticles which contain cross-linked copolymers of acrylate ot methylacrylate and styrole, 2-hydroxymethylacrylate, methacrylate, poly(oxyethylene)methacrylate or a linear or branched alkylmethacrylate; or inorganic nanoparticles containing silicone oxide or aluminium oxide. Described is the thermographic offset plate for reverse printing, containing (a) water receptive plate, (b) a layer positioned on the plate which forms the image in the near-infrared region, and (c) the coating layer which is positioned on the image-forming layer and contains the said coating composition.

EFFECT: reduction or elimination of background filling of the offset plates in the conditions of white light, elimination of the need to use separating paper when packaging offset plates.

7 cl, 10 dwg, 13 ex

FIELD: negative printing forms developed in printing machine, which may be exposed by ultraviolet, visible or infrared radiation.

SUBSTANCE: cover-forming composition is described, which includes (i) polymerization-capable compound and (ii) polymer binding agent, containing polyethylene-epoxide segments, where polymer binding agent is selected from group which consists of at least one added copolymer, containing polymer of the main chain and polyethylene-epoxide side chains, block copolymer, containing at least one polyethylene-epoxide block and least one non polyethylene-epoxide block, and combinations of these. Also described is an element, in which image may be formed, including base and polymerization-capable covering composition.

EFFECT: differentiation between image sections exposed and non-exposed by electromagnetic radiation, facilitating development of non-exposed sections in water developing agents, increased resistance to development of exposed sections, ensured coloration capacity of the latter when not heated before development.

5 cl, 3 dwg, 11 ex

FIELD: negative printing forms developed in printing machine, which may be exposed by ultraviolet, visible or infrared radiation.

SUBSTANCE: cover-forming composition is described, which includes (i) polymerization-capable compound and (ii) polymer binding agent, containing polyethylene-epoxide segments, where polymer binding agent is selected from group which consists of at least one added copolymer, containing polymer of the main chain and polyethylene-epoxide side chains, block copolymer, containing at least one polyethylene-epoxide block and least one non polyethylene-epoxide block, and combinations of these. Also described is an element, in which image may be formed, including base and polymerization-capable covering composition.

EFFECT: differentiation between image sections exposed and non-exposed by electromagnetic radiation, facilitating development of non-exposed sections in water developing agents, increased resistance to development of exposed sections, ensured coloration capacity of the latter when not heated before development.

5 cl, 3 dwg, 11 ex

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