WO2002061506A2 - Liquide revelateur renfermant du dipropyleneglycoldialkylether - Google Patents

Liquide revelateur renfermant du dipropyleneglycoldialkylether Download PDF

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Publication number
WO2002061506A2
WO2002061506A2 PCT/EP2002/000901 EP0200901W WO02061506A2 WO 2002061506 A2 WO2002061506 A2 WO 2002061506A2 EP 0200901 W EP0200901 W EP 0200901W WO 02061506 A2 WO02061506 A2 WO 02061506A2
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WO
WIPO (PCT)
Prior art keywords
developer
dipropylene glycol
developer liquid
glycol dialkyl
volume
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PCT/EP2002/000901
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German (de)
English (en)
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WO2002061506A3 (fr
Inventor
Rolf KNÖLL
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Basf Drucksysteme Gmbh
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Publication of WO2002061506A2 publication Critical patent/WO2002061506A2/fr
Publication of WO2002061506A3 publication Critical patent/WO2002061506A3/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/30—Imagewise removal using liquid means
    • G03F7/32—Liquid compositions therefor, e.g. developers
    • G03F7/325—Non-aqueous compositions

Definitions

  • the present invention relates to developer liquids containing at least one dipropylene glycol dialkyl ether, at least one alcohol and at least one hydrogenated petroleum fraction, the use of such developer liquids in processes for producing flexographic relief printing plates from photosensitive recording elements and the process itself.
  • a photographic image mask or negative template is placed on a light-sensitive, photopolymerizable recording element.
  • a photopolymerizable recording layer is then irradiated through this mask with actinic light, as a result of which parts of the recording layer are polymerized or crosslinked, and then the unexposed, uncrosslinked layer portions are removed by washing out with developer liquids.
  • the washout process is also referred to as developing.
  • the photopolymerizable recording element is provided with a suitable color-receiving layer and a mask is printed on by means of an ink jet printer, as disclosed, for example, by WO 97/25206.
  • the recording element can then be exposed and developed in a known manner.
  • the photopolymerizable recording element is coated with a largely opaque, IR-ablative layer.
  • an IR laser such as an Nd YAG laser
  • the IR-ablative layer is removed at the points where it is struck by the laser beam and the photopolymerizable recording layer underneath is exposed, as described, for example, in EP-A 0 767 407.
  • the imaged recording element can then be irradiated with actinic light over the entire surface in a known manner through the ablatively formed mask and washed out with a developer liquid. In the washing-out step, the unleached residues of the IR-ablative layer and the unpolymerized areas of the exposed recording layer underneath are removed.
  • the swelling and extraction of the imagewise exposed recording layer are problematic during the development process. Swelling means the absorption of developer liquid through the exposed and therefore photopolymerized areas of the recording layer. This process leads to an increase in the layer thickness and the weight of the recording layer and is usually unavoidable. In most cases, the stronger the swelling, the shorter the washout times. However, strong swelling leads to breakouts in fine relief structures and to a wrinkled surface structure, the so-called orange peel, and is therefore disadvantageous. A compromise must therefore be found between swelling and washout times.
  • the recording layers may have to be dried beyond the initial weight or the initial layer thickness after development.
  • residual solvents usually remain in the layers despite drying. This can lead to what is known as long-term shrinkage, that is to say that the relief layer of the relevant fiexographic relief printing plate and thus the printing results can change due to the gradual evaporation of the residual solvent during longer storage or use.
  • the residual solvents are usually distributed unevenly. Fine structures and edges of solid areas swell more than the center of solid areas. These inhomogeneities can render the fiexographic relief printing plate in question unusable.
  • developer liquids which contain at least one compound from groups a) to d):
  • developer liquids can optionally contain 5 to 40% alcohol such as butanol or benzyl alcohol.
  • esters are their sometimes intense smell, which leads to a serious impairment of the staff in the reprographic operation.
  • WO 99/35538 describes the use of one or more terpene esters as developer liquids.
  • the developer liquids can also contain organic solvents such as Q- to C-alcohols and benzyl alcohol, and “non-solvents” which cannot dissolve the unpolymerized parts of the recording layer, such as petroleum distillates, (iso) paraffmic hydrocarbon mixtures, mineral oils, decane and octane ,
  • a disadvantage is the mostly intense odor of the terpene nests, so that the development process must be carried out in ventilated factory rooms.
  • Developer liquids according to US Pat. No. 5,516,623 contain at least one mono- or polysubstituted cyclic or bicyclic C 9 to C 13 aromatics and optionally further solvents such as high-boiling alcohols (butanol).
  • the disadvantage here is the strong swelling of the recording layers caused by the aromatics during development. There are also toxicological concerns about the use of aromatics.
  • No. 5,061,606 describes a developer liquid which essentially consists of a hydrogenated petroleum fraction with a flash point above 45 ° C. and a boiling point between 160 and 220 ° C.
  • the hydrogenated petroleum fraction preferably contains 0.5 to 50% naphthenic compounds.
  • C - to C 8 - alcohols, odor improvers such as monoterpenes and / or surface-active substances can also be present. It is an object of the present invention to provide a further developer liquid which has only a slight or pleasant intrinsic odor, only leads to a slight swelling of the recording layer, and also requires wash-out times and drying times which are comparable with conventional developer liquids.
  • the solution to the problem is based on developer liquids containing at least one alcohol and at least one hydrogenated petroleum fraction.
  • the developer liquids according to the invention are characterized in that they additionally contain at least one dipropylene glycol dialkyl ether.
  • developer liquids according to the invention With the developer liquids according to the invention, relatively short wash-out times are achieved with simultaneous relatively slight swelling and extraction. In addition, there is no clouding of the developer liquid or deposits in the washout systems and on the fiexographic relief printing plates produced, even after prolonged operation. Further advantages of the developer liquids according to the invention are the relatively short drying times and their weak or very mild smell. Thus, in operational practice, neither the operating personnel of the washout system nor the personnel who continue to handle the fiexographic relief printing plates produced are exposed to odor nuisances. The extraction of the washout systems can therefore be greatly reduced. After completion, the fiexographic relief printing plates are largely odorless.
  • the developer liquids according to the invention generally contain 25 to 47.5% by volume, preferably 36 to 44% by volume, particularly preferably 40% by volume of dipropylene glycol dialkyl ether, 25 to 47.5% by volume, preferably 36 to 44% by volume. %, particularly preferably 40% by volume of hydrogenated petroleum fraction, and 5 to 50% by volume, preferably 12 to 28% by volume, particularly preferably 20% by volume of alcohol.
  • the developer liquids according to the invention can optionally contain additives such as surface-active substances in an amount of at most 2% by weight, based on the total amount of the developer liquid. Surface-active substances accelerate the dissolution of the unexposed material during the development process.
  • Suitable dipropylene glycol dialkyl ethers are dipropylene glycol dimethyl ether, dipropylene glycol diethyl ether, dipropylene glycol di-n-propyl ether and dipropylene glycol di-n-butyl ether.
  • Dipropylene glycol dialkyl ethers with a flash point> 60.5 ° C. are preferred used.
  • Dipropylene glycol dimethyl ether is particularly preferably used. Mixtures of dipropylene glycol dialkyl ethers can also be used.
  • Suitable alcohols are linear or branched aliphatic and cycloaliphatic primary, secondary or tertiary C - to C ⁇ -alkanols such as n-pentanol and its isomers, n-hexanol and its isomers, n-heptanol and its isomers, n-octanol and its isomers, n Nonanol and its isomers, n-decanol and its isomers, lauryl alcohol, aromatic C 7 -C 13 -alcohols such as benzyl alcohol, and 3-methyl-3-methoxybutanol and tetrahyckofurfuryl alcohol. Alcohols which have a flash point> 60.5 ° C. are preferably used. Mixtures of these alcohols can also be used.
  • Suitable hydrogenated petroleum fractions generally have a flash point> 45 ° C and a boiling range between 160 and 220 ° C, preferably between 180 and 215 ° C.
  • Hydrogenated petroleum fractions with an aromatic content according to DIN 51 378 of 0.1 to 2% by weight, preferably ⁇ 1% by weight, are preferred since aromatics would lead to a strong swelling of the recording layer.
  • Hydrogenated petroleum fractions which have a naphthenic content according to DIN 51 378 of 0.5 to 50% by weight are particularly preferred.
  • suitable hydrogenated petroleum fractions are Shellsol ® D60, from Shell, and Exxsol D60 ® from ExxonMobil Chemical, both of which have a boiling range of about 180 to 215 ° C, a flash point> 60.5 ° C, an aromatic content of 0.5 wt. -%, and have a naphthenic hydrocarbon content of about 40 wt .-%. These products are also almost completely odorless.
  • the developer liquids also have flash points above 60.5 ° C.
  • Developer fluids of this type offer the advantage of being easier to handle, store and transport than developer fluids with flash points below 60.5 ° C., since in some countries there is no labeling requirement in the sense of the dangerous goods regulations. In addition, there is no need for specially approved expensive packaging, labeling of the packaging or marking of the transport vehicles.
  • the development of the fiexographic relief printing plates at wash-out temperatures of 30 ° C. customary in practice when using a developer liquid according to the invention with a flash point above 60.5 ° C. does not have to be carried out in explosion-protected wash-out systems. The construction is not Explosion-protected washout systems are significantly cheaper than the explosion-protected washout systems, so that costs can also be saved.
  • Examples of surface-active substances are alkylsulfonic acids and their salts, alkylammonium salts. ethoxylated fatty alcohols and fatty amines, esters of long-chain fatty acids with alcohols or amino alcohols, monosulfuric acid esters and monophosphoric acid esters of fatty alcohols and their salts.
  • the present invention furthermore relates to a process for producing a photopolymeric fiexographic relief printing plate from a light-sensitive recording element
  • the developer liquid contains at least one dipropylene glycol dialkyl ether, at least one alcohol and at least one hydrogenated petroleum fraction.
  • Photosensitive recording elements generally have the following composition:
  • the exact composition of the recording element is determined by the person skilled in the art according to the respective requirements.
  • the thickness of the recording element according to the invention varies depending on the structure and application of the fiexographic relief printing plate and is generally 0.1 to 7 mm, preferably 0.7 to 6.5 mm.
  • Suitable dimensionally stable supports are plates, foils as well as conical and cylindrical tubes made of metals such as steel, aluminum, copper or nickel or of plastics such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyamide, polycarbonate, and possibly also Fabrics and nonwovens, such as glass fiber fabrics and composite materials made of glass fibers and plastics.
  • Dimensionally stable carrier films such as polyethylene or polyester films, in particular PET or PEN films, are particularly suitable as dimensionally stable carriers.
  • the thickness of the carrier films is generally 50 to 500 ⁇ m, preferably 75 to 400 ⁇ m, particularly preferably 75 to 225 ⁇ m.
  • the recording layer (C) can be directly on the support (A) or with an adhesive layer
  • adhesive layers (B) be applied to the carrier (A) '.
  • adhesive layers (B) inter alia, polyurethane adhesive paints, for. B. according to DE-A 3045 516 based on polyisocyanate-crosslinked polyether or polyester paints in layer thicknesses between 0.5 and 50 microns, preferably between 2 and 30 microns.
  • a recording layer (C) generally contains 50 to 95% by weight, preferably 70 to 95% by weight, binder (cl), 4.9 to 45% by weight, preferably 4.9 to 30% by weight , photopolymerizable monomer (c2) and 0.1 to 5 wt .-% photopolymerization initiator (c3) - based on the total amount of the recording layer.
  • the recording layers can also contain plasticizers and auxiliaries. The amount of plasticizer is selected by the person skilled in the art according to the desired hardness of the printing plate. It is generally less than 40% by weight with respect to the total amount of the recording layer.
  • the amount of auxiliaries is generally less than 20% by weight, based on the total amount of the recording layer, and is generally chosen so that the total amount of plasticizers and auxiliaries does not exceed 50% by weight, based on the total amount of the recording layer.
  • a plurality of recording layers (C) can also be present. All known binders used for the production of photopolymerizable recording elements can be used as the elastomeric binder (c1). In principle, both elastomeric binders and thermoplastic elastomeric binders are suitable.
  • Suitable binders are vinylaromatic-alkadiene block copolymers, such as the known three-block copolymers of the SIS type (polystyrene-polyisoprene-polystyrene block copolymers) or SBS type (polystyrene-polybutadiene-polystyrene block copolymers), which are also fully or partially hydrogenated can.
  • SIS polystyrene-polyisoprene-polystyrene block copolymers
  • SBS type polystyrene-polybutadiene-polystyrene block copolymers
  • AJkadien-acrylonitrile copolymers such as butadiene-acrylonitrile copolymers, fluororubbers such as vinylidene chloride-hexafluoropylene rubbers, natural rubbers, silicone polymers, polysulfide rubbers, and elastomeric polymers of the ethylene propylene / diene type, ethylene-acrylic acid rubbers or elastomeric polymers based on acrylates or acrylate copolymers can be used.
  • suitable binders are disclosed in DE-A 22 15 090, EP-A 0 084 851, EP-A 0 819 984 or EP-A 0 553 662. Mixtures of two or more different binders can also be used.
  • photopolymerizable monomers (c2) all monomers normally used for the production of photopolymerizable recording elements can be used as photopolymerizable monomers (c2).
  • the monomers (c2) should be compatible with the binders (cl) and have at least one polymerizable, ethylenically unsaturated double bond.
  • Suitable monomers generally have a boiling point of more than 100 ° C. at atmospheric pressure and a molecular weight of up to 3,000 g / mol, preferably up to 2,000 g / mol.
  • Esters or amides of acrylic acid or methacrylic acid with mono- or polyfunctional alcohols, amines, amino alcohols or hydroxyethers and esters, styrene or substituted styrenes, esters of fumaric or maleic acid or allyl compounds have proven to be particularly advantageous.
  • Suitable monomers are butyl acrylate, 2-ethylhexyl acrylate, lauryl acrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol dimethacrylate, 1,9-nonanediol diacrylate, trimethylolpropane triacrylate, dioctyl fumarate, N-dodecylate. Mixtures of different monomers can also be used.
  • Photopolymerization initiators (c3) are, for example, benzoin and benzoin derivatives such as ⁇ -methyl-benzoin or benzoin ethers, benzene derivatives such as benzil ketals, acylarylphosphine oxides, acylarylphosphinic acid esters and their sodium salts, and benzo phenones. Mixtures of several photopolymerization initiators can also be used.
  • plasticizers are modified and unmodified natural oils and natural resins, alkyl, alkenyl, arylalkyl or arylalkenyl esters of acids, such as alkanoic acids, arylcarboxylic acids or phosphoric acid; synthetic oligomers or resins such as oligostyrene, styrene-butadiene oligomers, o-methylstyrene / p-methylstyrene oligomers, liquid oligobutadienes and oligoisoprenes, or liquid acrylonitrile-butadiene oligomers; as well as polyterpenes, polyacrylates, polyesters or polyurethanes, polyethylene, ethylene-propylene-diene rubbers or ⁇ -methyl-oligo (ethylene oxide).
  • acids such as alkanoic acids, arylcarboxylic acids or phosphoric acid
  • synthetic oligomers or resins such as oligostyrene, st
  • plasticizers are paraffinic mineral oils; Esters of dicarboxylic acids such as dioctyl adipate or terephthalic acid dioctyl ester; naphthenic plasticizers or polybutadienes with a molecular weight between 500 and 5000 g / mol. Mixtures of different plasticizers can also be used.
  • auxiliaries are inhibitors for thermally initiated polymerization, dyes, pigments, photochromic additives, antioxidants, antiozonants or fillers.
  • Dyes, pigments or photochromic additives serve to control the exposure properties, the identification, the direct control of the exposure result or aesthetic purposes and are generally added in an amount of 0.001 to 2% by weight, based on the total composition of the recording layer.
  • Inhibitors for the thermally initiated polymerization are, for example, hydroquinone, p-methoxyphenol, 2,6-di-tert-butyl-p-cresol, ⁇ -naphthol, phenothiazine, pyridine, nitrobenzene, m-dinitrobenzene, chloranil, thiazine dyes such as thionine blue G ( CL 52025), methylene blue B (CL 52015) or toluidine blue (CL 52040) or N-nittosamine.
  • Suitable dyes are e.g. B. the soluble phenazinium, phenoxazinium, acridinium and phenotmazinium dyes such as neutral red (C 50040), safranin T (CL 50240), rhodanil blue, the salt or amide from rhodamine D (Basic Violet 10, Cl 45170), methylene blue B (Cl . 52015) or Solvent Black 3 (CL 26150).
  • neutral red C 50040
  • safranin T CL 50240
  • rhodanil blue the salt or amide from rhodamine D (Basic Violet 10, Cl 45170)
  • methylene blue B Cl . 52015
  • Solvent Black 3 CL 26150
  • antioxidants are sterically hindered monophenols such as 2,6-di-tert-butyl-p-cresol, alkylated thiobis and alkylidene bisphenols, hydroxybenzyls such as 1,3,5- Trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, triazines, zinc butyldithiocarbamate, dilauryl thiodipropionate or phosphites such as tris (nonylphenyl) phosphite.
  • monophenols such as 2,6-di-tert-butyl-p-cresol, alkylated thiobis and alkylidene bisphenols
  • hydroxybenzyls such as 1,3,5- Trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene
  • triazines zinc butyldithi
  • polymeric or non-polymeric organic and inorganic fillers or reinforcing fillers are those which are essentially transparent to the wavelengths of the light used for exposing the recording elements according to the invention, do not scatter this light and are largely adapted in their refractive index to the composition of the recording layer, such as polystyrene, Silicon dioxide, bentonite, silica, aluminum oxide, glass powder, colloidal carbon and other pigments.
  • antiozonants are customary and known ozone protection waxes and chloroalkanes with 8 to 40 carbon atoms and 30 to 73% by weight of chlorine in the molecule.
  • the recording element optionally contains an IR-ablative layer (E). This can lie directly on the recording layer (C) or on a conventional intermediate layer (D) located between the recording layer (C) and the IR-ablative layer (E). It is preferably located directly on the recording layer (C).
  • E IR-ablative layer
  • Conventional IR-ablative layers (E) are likewise soluble or dispersible in the developer liquids according to the invention and contain in a film-binding binder with elastomeric properties at least one finely divided substance which has a high absorption in the wavelength range between 750 nm and 20 ⁇ m and an optical one in the UV7VIS range Density ⁇ 2.5, preferably ⁇ 3.0, particularly preferably ⁇ 3.5.
  • thermoplastic-elastomeric polyamide resins which are commercially available such as Macromelt ® from. Henkel, elastomeric polyurethanes, polyether-polyurethanes or SIS or SBS block copolymers.
  • Examples of substances with high IR absorption are various finely divided types of carbon black, for example colored carbon black FW 2000, special black 5 or Printex® U from Degussa with an average primary particle size of 13 to 30 nm.
  • Solutions of film-binding binders in which the substances are used are preferred are homogeneously dispersed with high IR absorption. These solutions are either applied directly to the recording layers evenly applied and dried or poured onto a film and dried. These films are then applied to the recording layers.
  • non-tacky cover layers (E) are optionally applied to the mostly sticky recording layers (C), so that a photographic image mask or negative template placed on the cover layer can easily be detached from the recording element.
  • Suitable cover layers (E) are optically transparent, generally 0.2 to 25 ⁇ m thick, and are impermeable to oxygen, so that inhibition of photopolymerization by atmospheric oxygen in the photopolymerizable relief-forming recording layer is prevented.
  • Cover layers are generally formed from a tear-resistant film-forming polymer and any additives contained therein. They are generally alcohol-soluble, so that they are advantageously also dissolved when developing with developer liquids according to the invention, without a further step being necessary.
  • suitable polymers which form tear-resistant films are polyamides, fully or partially hydrolyzed polyvinyl acetates or polyethylene oxide-vinyl acetate graft polymers, copolyamides, polyurethanes, poly (meth) acrylates, polyvinyl alcohol-alkane carboxylic acid esters with a degree of hydrolysis of 30 to 99 mol%, Cyclo rubbers with a high degree of cyclization, ethylene-propylene copolymers, homo- and copolymers of vinyl chloride or ethylene-vinyl acetate copolymers.
  • suitable cover layers which contain additives are known from DE-A 28 23 300 or DE-B 21 23 702.
  • Photosensitive recording elements of the type described are freely available commercially and are, for example, from BASF Drucksysteme GmbH under the trademark or trade name nyloflex®, from DuPont de Nemours under the trademark or trade name CYREL®, from Asahi Chemical Corp. under the trademark or trade name AFP®, by MacDermid under the trademark or trade name Flexlight® or by Tokyo Okha Kogyo KK sold under the trademark or trade name Elaslon® or Okhaflex®.
  • the photopolymerizable recording layer (C) is imagewise exposed in the usual way with actinic light which has a wavelength ⁇ of 230 to 450 nm.
  • Actinic light with a wavelength ⁇ of 300 to 450 nm is preferably used.
  • Suitable light sources are, for example, the radiation from the sun, commercially available UV fluorescent tubes, medium, high and low pressure mercury lamps, superactinic fluorescent tubes, xenon pulse lamps, lamps doped with metal iodides, carbon arc lamps or sterilization lamps.
  • the image-wise exposed recording element is developed with the developer liquids according to the invention in the usual way in the known spray, brush, continuous and grater washout systems at temperatures of 20 to 60 ° C., in particular 20 to 35 ° C.
  • the drying of the fiexographic relief printing plates as well as further process steps such as pre-treatment and post-treatment steps are carried out in a conventional manner according to the prior art and are described, for example, in EP-A 0468 185 and DE-A 39 08 763.
  • Dipropylene glycol dialkyl ether (Proglyde® DMM from Dow Chemical) was used as dipropylene glycol dialkyl ether, a mixture of aliphatic hydrocarbons with a cycloaliphate fraction of 40% (Exxsol® D 60 from ExxonMobil Chemical) as the hydrogenated petroleum fraction and benzyl alcohol as alcohol.
  • Solvesso® 150 from ExxonMobil Chemical was used as a mixture of aromatic hydrocarbons
  • nylosolv® II is a developer liquid that is available from BASF Drucksysteme GmbH.
  • the compositions of the developer liquids tested are shown in Table 1.
  • Developer liquid 1 is according to the invention.
  • Developer liquids 2 to 7 were used for comparison.
  • developer liquids 2 and 3 it was investigated how the omission of a component of the developer liquid according to the invention affects the properties.
  • developer liquids 6 and 7 it was examined how the exchange of dipropylene glycol dimethyl ether with diethylene glycol dimethyl ether works.
  • the developer liquids 4 and 5 are conventional developer liquids.
  • the swelling behavior of the developer fluids examined is shown in Table 2 and is shown graphically in FIG. 1.
  • the time in minutes is plotted on the x-axis and the weight increases in% on the y-axis.
  • the developer liquid 1 is according to the invention.
  • the least swelling was observed when using developer liquids 2 and 7 consisting of 80% by volume dipropylene or diethylene glycol dimethyl ether and 20% by volume benzyl alcohol.
  • the developer liquid 1 according to the invention also showed little swelling and was the other developer liquids 3 to 6 with regard to this Superior property.
  • the developer liquid 1 according to the invention showed the least extraction of the recording layer.
  • the washout behavior of the developer liquids examined is shown graphically in FIG. 2.
  • the washout time is plotted in min on the x-axis and the plate thickness in ⁇ m on the y-axis.
  • the desired washout depth is shown as a horizontal line.
  • the developer liquid 1 is according to the invention. •
  • the developer liquid 1 according to the invention required a washout time comparable to the conventional developer liquids 4 and 5.
  • Developer liquid 4 has the disadvantage of very strong swelling.
  • Developer liquid 5 has the disadvantage that it has a flash point ⁇ 60.5 ° C.
  • the developer liquids 2 and 3 required longer washout times compared to the developer liquid 1 according to the invention. Accordingly, the three-component mixture of dipropylene glycol dimethyl ether, hydrogenated petroleum fraction and benzyl alcohol according to the invention is superior to the two-component mixtures dipropylene glycol dimethyl ether-benzyl alcohol and dipropylene glycol dimethyl ether-hydrogenated petroleum fraction.
  • the developer liquids 2 and 7 showed a clear turbidity after a few washout attempts. After a while, the developer liquid 6 formed a gel-like mass on the liquid surface. A comparable turbidity or the formation of a gel-like mass could not be found in the developer liquid 1 according to the invention.
  • the developer liquid 1 according to the invention remained after one Series of wash-out attempts very clear and had an ether-like and comparatively pleasant smell.
  • the drying behavior of the developer liquids examined is shown graphically in FIG. 3.
  • the drying time is plotted in min on the x-axis and the weight in% on the y-axis.
  • the developer liquid 1 is according to the invention.
  • the extraction of compounds from the recording layer by the developer liquid means that the plate pieces can be dried to a weight of less than 100%.
  • UBG lower exposure limit
  • OBG upper exposure limit
  • BLSR exposure latitude

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  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Materials For Photolithography (AREA)

Abstract

L'invention concerne des liquides révélateurs renfermant au moins un dipropylèneglycoldialkyléther, au moins un alcool et au moins une fraction de pétrole hydrogénée, ainsi que leur utilisation pour le développement d'un élément de reproduction photosensible. L'invention concerne en outre un procédé de fabrication d'une plaque d'impression relief flexographique à partir d'un élément de reproduction photosensible par 1) exposition photographique d'une couche de reproduction photopolymérisable par une lumière actinique et, 2) développement de l'élément de reproduction exposé photographiquement par le liquide révélateur selon l'invention.
PCT/EP2002/000901 2001-01-29 2002-01-29 Liquide revelateur renfermant du dipropyleneglycoldialkylether WO2002061506A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001103823 DE10103823A1 (de) 2001-01-29 2001-01-29 Entwicklerflüssigkeit enthaltend Dipropylenglycoldialkylether
DE10103823.2 2001-01-29

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WO2002061506A2 true WO2002061506A2 (fr) 2002-08-08
WO2002061506A3 WO2002061506A3 (fr) 2002-10-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042225A1 (fr) * 2009-10-09 2011-04-14 Flexoclean Engineering B.V. Solvant de lavage polymère, et son utilisation pour développer une plaque d'impression flexographique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5061606A (en) * 1988-03-10 1991-10-29 Basf Aktiengesellschaft Preparation of relief printing plates
WO1999035538A1 (fr) * 1998-01-09 1999-07-15 Nupro Technologies, Inc. Solution de revelateur destinee aux cliches d'impression photopolymeres et procede correspondant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5061606A (en) * 1988-03-10 1991-10-29 Basf Aktiengesellschaft Preparation of relief printing plates
WO1999035538A1 (fr) * 1998-01-09 1999-07-15 Nupro Technologies, Inc. Solution de revelateur destinee aux cliches d'impression photopolymeres et procede correspondant

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042225A1 (fr) * 2009-10-09 2011-04-14 Flexoclean Engineering B.V. Solvant de lavage polymère, et son utilisation pour développer une plaque d'impression flexographique
EP2309331B1 (fr) * 2009-10-09 2012-01-25 Flexoclean Engineering B.V. Solvant de lavage de polymère et utilisation associée pour développer une plaque d'impression flexographique
CN102472983A (zh) * 2009-10-09 2012-05-23 富来科利工程公司 聚合物冲洗溶剂及其用于显影柔性印刷版的用途
JP2013507644A (ja) * 2009-10-09 2013-03-04 フレキソクリーン・エンジニアリング・ベスローテン・フェンノートシャップ フレキソ印刷版を現像するためのポリマーウォッシュアウト溶剤、およびその使用
RU2523810C2 (ru) * 2009-10-09 2014-07-27 Флексоклин Энджиниринг Б.В. Растворитель для вымывания полимера и его применение для обработки флексографической печатной формы
US8921035B2 (en) 2009-10-09 2014-12-30 Flexoclean Engineering B.V. Polymer washout solvent, and the use thereof for developing a flexographic printing plate

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