WO2005121896A1 - フレキソ印刷版用感光性樹脂 - Google Patents
フレキソ印刷版用感光性樹脂 Download PDFInfo
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- WO2005121896A1 WO2005121896A1 PCT/JP2005/010577 JP2005010577W WO2005121896A1 WO 2005121896 A1 WO2005121896 A1 WO 2005121896A1 JP 2005010577 W JP2005010577 W JP 2005010577W WO 2005121896 A1 WO2005121896 A1 WO 2005121896A1
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- polymer
- photosensitive resin
- molecular weight
- resin composition
- average molecular
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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
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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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
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
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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
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
Definitions
- the present invention relates to a photosensitive resin composition for flexographic printing plates used for flexographic printing.
- a photosensitive resin composition for a flexographic printing plate includes a support made of a polyester film or the like, on which a thermoplastic elastomer and at least one thermoplastic elastomer are provided.
- a photosensitive layer comprising a photosensitive resin composition containing two photopolymerizable unsaturated compounds and at least one initiator sensitive to radiation is provided.
- a slip layer or a protective layer, or an infrared-sensitive material that can be removed by an infrared laser is often used to smooth the contact with the negative film on the photosensitive layer. Is provided with a thin film called an ultraviolet shielding layer.
- a flexographic printing plate In order to make a flexographic printing plate from such a photosensitive resin composition for a flexographic printing plate, the entire surface is first exposed to ultraviolet light (back exposure) to provide a thin uniform cured layer, and then a negative film is formed. Image exposure (relief exposure) on the surface of the photosensitive resin layer with UV light, or directly from above the UV shielding layer, washing away the unexposed area with a developing solvent, or absorbing and removing by heat absorption to the absorbing layer In general, a desired image, that is, a relief image is obtained to form a printing plate.
- ink is supplied to the surface of a convex portion of the resin plate having irregularities with an ink supply roll or the like, and then the resin plate is applied to a printing medium.
- This is a method in which the ink on the surface of the convex portion is transferred to the printing medium by contact.
- the thickness of the printing plate is not uniform, the image will be distorted due to the part where the ink does not transfer or the pressure during printing will be excessive, so it is desirable that the thickness be as uniform as possible. If the photosensitive resin composition undergoes cold flow during storage and transport, the thickness of the photosensitive resin composition partially decreases, and therefore it is preferable that the photosensitive resin composition have cold flow resistance as much as possible.
- a photosensitive resin composition those described in Patent Documents 1, 2, and 3 are known, but all have a number average molecular weight (Mn) of several hundred to less than 10,000 as a plasticizer. Butadiene polymers are used.
- Patent Document 4 describes a photosensitive elastomer composition containing a high-molecular-weight elastomer diene polymer and a low-molecular-weight diene polymer having a molecular weight Mn of about 1,000 to 25,000. Specifically, polyisoprene having a molecular weight of 16,000 and polybutadiene having a molecular weight of 4000 or less are disclosed.
- Patent Document 5 includes a low molecular weight block copolymer (c) having a weight average molecular weight of 1,000 to 35,000 having one block A derived from a polymerizable monobutyl aromatic monomer and at least one block B derived from a polymerizable conjugated diene monomer. Photocurable polymer compositions are described. Separately, Patent Document 5 discloses polybutadiene as a commonly used plasticizer, and describes that the molecular weight of the plasticizer is 300 to 35,000. However, since the low molecular weight block copolymer (c) also plays a role of a plasticizer, it is described that it is preferable not to use a plasticizer. In Examples, only the styrene isoprene copolymer having a molecular weight of 30,000 is used as the block copolymer (c). Is used.
- Patent Document 6 proposes to add a polymer of isoprene having a molecular weight of 25,000 or more as a plasticizer in order to improve the solvent resistance of the flexographic printing plate. Therefore, it is not possible to obtain excellent printed matter, which is not necessarily sufficient in printing durability, such as a relief shape of a fine line that does not always have sufficient printing durability, or an image with good reproducibility of an image of a thin white line.
- a liquid polybutadiene having a high molecular weight of 10,000 or more and having a specific content of 1,2-butyl or less or a sharp molecular weight distribution is used for flexographic printing.
- Examples used in the photosensitive resin composition are not known.
- the opposite effects of cold flow resistance and printing plate durability during printing (chip resistance) and image quality By improving the reproducibility together, the problem has been solved so far.
- Patent Document 1 JP-A-2000-155418
- Patent Document 2 JP-A-2000-181060
- Patent Document 3 JP-A-11-153865
- Patent Document 4 Japanese Patent Publication No. 06-039547
- Patent Document 5 Japanese Patent Application Publication No. 2002-519465
- Patent Document 6 Patent No. 2635461
- the present invention provides a photosensitive resin composition for a flexographic printing plate, which simultaneously satisfies the cold flow resistance (shape retention) of the photosensitive resin composition, the high image reproducibility of the printing plate, and the high printing durability.
- the purpose is to provide.
- the physical strength of the resin composition is usually increased, so that the image reproducibility is reduced. It is an object of the present invention to exhibit all of these contradictory physical properties without reducing image reproducibility.
- the present inventors have conducted intensive studies to solve the above problems, and as a result, have found that the problems can be solved by using the following novel photosensitive resin composition, and have accomplished the present invention.
- the present invention is as follows.
- thermoplastic elastomer (A), butadiene-based polymer (B), photopolymerizable unsaturated monomer (C) and photopolymerization initiator (D) A resin composition (but substantially free of a hydrophilic polymer), wherein the polymer (B) has a number average molecular weight of 10,000 or more and a force of 60,000 or less, and the polymer (B) has a full duplex A photosensitive resin composition for flexographic printing wherein the content of 1, 2 vinyl in the binding amount is 25% or less,
- thermoplastic elastomer (A), butadiene-based polymer (B), photopolymerizable unsaturated monomer (C) and photopolymerization initiator (D) A resin composition (but substantially free of a hydrophilic polymer), wherein the number average molecular weight of the polymer (B) is A photosensitive resin composition having a weight of 10,000 or more and 60,000 or less, and having a ratio of the weight average molecular weight to the number average molecular weight of the polymer (B) of 1.3 or less,
- thermoplastic elastomer (A) has a block mainly composed of styrene and at least a block mainly composed of butadiene.
- a flexographic printing photosensitive material having a laminated structure comprising a support and a layer of the photosensitive resin composition according to any one of the above (1) to (6) formed on its surface. Sex construct,
- thermoplastic elastomer (A) is supplied to the first section of the extruder, and then a butadiene-based polymer (B) having a number average molecular weight of 10,000 or more and 60,000 or less.
- the method for producing a photosensitive resin composition according to the above (1) comprising supplying the agent (D) to one or more supply openings of the subsequent heated area, followed by kneading.
- thermoplastic elastomer (A) is supplied to the first section of the extruder, and then the polymer (B) mainly composed of butadiene has a number average molecular weight of 10,000 or more.
- the subsequent heated area has two or more supply openings, and is composed of a polymer (B) mainly composed of butadiene, a photopolymerizable unsaturated monomer (C) and a photopolymerizable unsaturated monomer (C).
- the method for producing a photosensitive resin composition according to the above (2) comprising mixing the mixture and forming a layer on a support.
- the photosensitive resin composition of the present invention simultaneously satisfies the cold flow resistance (shape maintenance property) of the photosensitive resin composition, the high image reproducibility of the printing plate, and the high printing durability.
- the photosensitive resin composition of the present invention comprises at least a thermoplastic elastomer (A), a polymer mainly composed of butadiene (B), a photopolymerizable unsaturated monomer (C), and a photopolymerization initiator (D). Is included. However, it does not substantially contain a hydrophilic polymer.
- the hydrophilic polymer according to the present invention has a hydrophilic functional group, is dissolved or swells in water at room temperature which is a solid at room temperature and has no fluidity, and is incompatible with the thermoplastic elastomer (A) of the present invention. A polymer that does not dissolve.
- substantially contains no hydrophilic polymer means that the amount of the hydrophilic polymer in the photosensitive resin composition is 3 wt. / 0 or less.
- the amount of the hydrophilic polymer is 3 wt% or less, high printing durability in printing using the ester-containing solvent ink can be obtained.
- the amount of the hydrophilic polymer is less than lwt%, most preferably not containing.
- thermoplastic elastomer (A) of the present invention exhibits a rubber elasticity at around room temperature, is hardly plastically deformed, and is easily plasticized by heat when the composition is mixed with an extruder or the like. Polymers are preferred.
- the content of the thermoplastic elastomer (A) in the photosensitive resin composition is 40 wt% or more to increase the mechanical strength of the printing plate, and 90 wt% to reduce the viscosity so that the resin composition can be easily mixed. % Or less is preferable.
- thermoplastic elastomer (A) a styrene-based thermoplastic elastomer composed of a block mainly composed of styrene and a block having at least a conjugated gen is preferred from the viewpoint of availability.
- the block structure is not particularly limited.
- the conjugated gen of the styrene-based thermoplastic elastomer is preferably butadiene and / or isoprene from the viewpoint of economy.
- butadiene is more preferably contained from the viewpoint of printing durability.
- the styrene content in the styrene-based thermoplastic elastomer is preferably 10% by weight or more in terms of suppressing the cold flow resistance when the photosensitive resin plate before the exposure is laminated is more flexible.
- the content is preferably 40 wt% or less. It is more preferably from 13 wt% to 28 wt% or less.
- the polymer (B) essential for the present invention is a polymer mainly composed of butadiene, and has a number average molecular weight (Mn) force of not less than 10,000 and not more than 60,000.
- the polymer (B) is mainly composed of butadiene
- good image reproducibility and printing durability can be obtained.
- the “subject” in the present invention means a ratio of 70% by weight or more. It is preferably at least 85 wt%, more preferably at least 95 wt%. If butadiene is the main component, it may be a copolymer of styrene or isoprene. Further, it may be partially hydrogenated.
- the structure, cis / trans ratio or polymerization method is not particularly limited.
- the polymer (B) preferably has fluidity at room temperature so that the photosensitive resin composition can be easily mixed.
- Mn is 10,000 or more, good cold flow resistance and printing durability are obtained, and when it is 60,000 or less, a good developing speed can be maintained. More preferably, it is in the range of 20,000 to 60,000, even more preferably, 26,000 forces are also in the range of 60,000.
- the content of the polymer (B) in the photosensitive resin composition is preferably 3% by weight or more from the viewpoint of improving the printing durability and flexibility of the printing plate, and from the viewpoint of reducing the tackiness of the printing plate surface, which is preferable. Less than 40 wt% is preferred. More preferably, it is in the range of 5 wt% to 35 wt%, and still more preferably in the range of 10 wt% to 35 wt%.
- the content of 1,2-vinyl in the amount of double bonds in the polymer is preferably 25% or less. 15% or less is more preferable.
- the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is preferably 1.3 or less. 1.2 or less is more preferable.
- the peak on the high temperature side shows a tendency that the higher the content of the polymer (B) of the present invention, the larger the peak.
- the content of the butadiene polymer (B) in the photosensitive resin composition is 5 wt%. The above is preferred. More preferably, it is at least 10 wt%.
- a resin composition is press-molded with a double-sided silicon pet to a thickness of 3 mm, and the thickness is adjusted to 370 nm on an AFP-1216 exposure machine (trade name, manufactured by Asahi Kasei).
- an ultraviolet fluorescent lamp having a central wavelength, the entire surface is exposed at 3000 mj / cm 2 from both sides to obtain a cured product of the resin composition.
- the exposure intensity was measured using a UV-35 filter (trade name, manufactured by Oak Works) with a UV illuminometer (trade name, MO-2 model) manufactured by Oak Works. Measure.
- the cured product is cut to a width of 10 mm, and the device AR-500 ( ⁇ ⁇ ⁇ ⁇ Instrument Co., Ltd.)
- the molecular weight of the present invention is a value determined from polystyrene conversion using gel permeation chromatography (GPC). Specifically, it was calculated by analyzing with an RI detector of HLC-8020 (Tosoh GPC, trade name, column TSK-GEL-GMHXL).
- 1,2-Bull content was calculated from the peak ratio of proton NMR (magnetic resonance spectrum) of liquid polybutadiene.
- Examples of the photopolymerizable unsaturated monomer (C) in the present invention include esters such as acrylic acid, methacrylic acid, fumaric acid, and maleic acid, acrylamide / methacrylamide derivatives, aryl esters, styrene and derivatives thereof. And N-substituted maleimide compounds.
- hexanediol nonanediol and other alkanediol diatalylates and dimethatalylates
- ethylene glycol diethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, butylene glycol diatalylate and dimethatalylate
- Trimethylolpropane tri (meth) atalylate dimethylol tricyclodecane di (meth) atalylate, isobornyl (meth) atalylate, laurinole (meth) atalylate, phenoxy polyethylene glycol (meth) atalylate, pentacacryloleamide , Styrene, vinyltoluene, dibutylbenzene, diacryl phthalate, triaryl cyanurate, getyl fumarate, dibutyl fumarate Dioctyl fumarate, distearyl fumarate, butoxyoctyl
- the content of the photopolymerizable unsaturated monomer (c) is too low, the ability to form fine dots and characters is reduced, and if the content is too high, the cold resistance when the photosensitive resin plate before exposure is laminated.
- the flowability is reduced, and the flexibility of the printing plate is reduced, so that the content in the photosensitive resin composition is preferably 0.5 wt% to 30 wt%.
- lwt% ⁇ The range of 15wt% is more preferred.
- the photopolymerization initiator (D) in the present invention is a compound that absorbs light energy and generates a radical, and is capable of using various known compounds.
- Various organic carbonyl compounds, Particularly, an aromatic carbonyl compound is preferable.
- benzophenone 4,4-bis (getylamino) benzophenone, t-butylanthraquinone, 2-ethylanthraquinone, 2,4-dimethylthioxanthone, isopropylthioxanthone, 2,4-dichlorothioxanthone, and the like.
- Thioxanthones jetoxyacetophenone, 2-hydroxy-12-methyl-1-phenylpropane-11-one, benzyldimethylketal, 1-hydroxycyclohexylophenyl ether ketone, 2-methinolay 2-morpholino (4 thiomethylphenyl Acetophenones such as enyl) propane-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone; benzoin methyl ether, benzoinethyl ether, benzoin isopropyl ether and benzoin isobutyl ether; Benzoin ethers; 2,4,6 trimethylbenzoyl diphenylphosphinoxide, bis (2,6 dimethoxybenzoyl) -1,2,4, trimethyl olepentylphosphinoxide, bis (2,4,6 trimethylbenzo Yl) phenylphosphinoxides and other acylphosphinoxides
- the content of the photopolymerization initiator (D) is too low, the formability of fine points and characters is reduced, and if it is too high, the transmittance of active light such as ultraviolet rays is reduced.
- the photosensitive resin composition of the present invention may further contain, if desired, various auxiliary additives such as a plasticizer, a thermal polymerization inhibitor, an antioxidant, an ultraviolet absorber, and halation. Inhibitors, light stabilizers and the like can be added.
- plasticizer examples include hydrocarbons such as naphthene and paraffin, liquid polybutadiene having a low number average molecular weight, liquid polyisoprene, modified liquid polybutadiene, liquid acrylic nitrile butadiene copolymer, liquid styrene-butadiene copolymer, Polystyrene having a number average molecular weight of 2,000 or less, sebacic acid ester, phthalic acid ester and the like can be mentioned. Photopolymerizable reactive groups may be added to these copolymers.
- hydrocarbons such as naphthene and paraffin
- liquid polybutadiene having a low number average molecular weight liquid polyisoprene, modified liquid polybutadiene, liquid acrylic nitrile butadiene copolymer, liquid styrene-butadiene copolymer, Polystyrene having a number average molecular weight of 2,000 or less, sebacic acid ester, phthalic
- the photosensitive resin composition for flexographic printing of the present invention can be prepared by various methods.
- the raw materials for the photosensitive resin composition are dissolved and mixed in a suitable solvent, for example, a solvent such as chloroform, tetrachloroethylene, methyl ethyl ketone, and toluene, and then cast into a mold to evaporate the solvent.
- a suitable solvent for example, a solvent such as chloroform, tetrachloroethylene, methyl ethyl ketone, and toluene
- the mixture can be kneaded with a screw extruder, a kneader or a roll mill and formed into a desired thickness by a calender roll or a press, but the present invention is not limited to these preparation methods. is not.
- a self-cleaning type of at least one thermoplastic elastomer, at least one photopolymerizable unsaturated monomer, and at least one photopolymerization initiator can be used. It is metered into a twin screw extruder, melted and degassed therein, and then conveyed through a sheet die to two calender rolls for molding. At this time, the thermoplastic elastomer is metered into the preferably unheated first section of the extruder, and the liquid component mixed and dissolved with the other ingredients is subsequently introduced into one or more feed openings of the heated section. Meter in to melt the mixture. When the liquid component is supplied from two or more supply openings, it is preferable to supply 10 to 40% of the entire liquid component to the first supply unit and to supply the remaining liquid component to the subsequent second supply opening and thereafter. .
- the resin layer is used in order to improve the contact property with a negative film superimposed thereon during plate making or to enable reuse of the negative film.
- a thin, flexible protective layer soluble in a solvent may be provided on the surface.
- the flexible protective layer may be used as an ultraviolet shielding layer containing an infrared-sensitive substance, and the flexible layer itself may be used as a negative by direct drawing with an infrared laser. In any case, when the unexposed portion is washed out after the exposure is completed, the thin flexible protective layer is also removed at the same time.
- a thin flexible protective layer that is soluble in a solvent for example, when a layer of polyamide, partially saponified polyacetic acid butyl, cellulose ester, or the like that is soluble in the washing solution is provided on the surface of the photosensitive resin layer, use a suitable solvent.
- the solution may be directly coated on the photosensitive resin layer by a solvent.
- the solution may be coated on a film of polyester, polypropylene, or the like (protective film), and then the protective film may be transferred to the photosensitive layer by laminating or press bonding.
- the protective film and the support are usually adhered to the photosensitive resin composition by roll laminating after forming the sheet of the photosensitive resin composition, and after laminating, heat-pressing to obtain a photosensitive resin layer with even more accurate thickness.
- a flexographic printing plate from the photosensitive composition for a flexographic printing plate, first, the entire surface is exposed to ultraviolet light through a support (back exposure), a thin uniform cured layer is provided, and then a negative film is passed through.
- image exposure stress exposure
- image exposure is performed on the surface of the photosensitive resin layer directly from above the ultraviolet shielding layer, and the unexposed portion is washed away with a developing solvent, or is absorbed and removed by an absorption layer after heating and melting, and post-processing is performed. Exposure is common.
- Either exposure from the negative film side (relief exposure) or exposure from the support side (back exposure) may be performed first, or both may be performed simultaneously.
- Exposure light sources include high-pressure mercury lamps, ultraviolet fluorescent lamps, carbon arc lamps, xenon lamps, and the like.
- Examples of the developing solvent used for developing the unexposed area include esters such as heptyl acetate and 3-methoxybutyl acetate, petroleum fractions, hydrocarbons such as toluene and decalin, and chlorine-based organic compounds such as tetrachloroethylene. Examples thereof include those obtained by mixing alcohols such as propanol, butanol, and pentanol with a solvent.
- Unexposed parts can be washed out by spraying from a nozzle or brushing with a brush.
- a method of irradiating the surface with light having a wavelength of 300 nm or less is generally used. If necessary, it is possible to use light larger than 300nm and light.
- the photosensitive resin compositions shown in Table 1 were mixed in a kneader at 140 ° C for 40 minutes to obtain a photosensitive resin composition.
- the obtained photosensitive resin composition was coated on a 100 ⁇ m polyester having a 125 ⁇ m thick polyester film support coated with an adhesive containing a thermoplastic elastomer and a 4 ⁇ m thick polyamide layer.
- a photosensitive resin component for flexographic printing plates was molded at 130 ° C. under a pressure of 200 kg / cm 2 for 4 minutes using a 3 mm spacer.
- a negative film is adhered on the polyamide protective film layer on the layer, and supported first on an AFP-1500 exposure machine (trade name, manufactured by Asahi Kasei Chemicals) using an ultraviolet fluorescent lamp having a center wavelength of 370 nm. After a 300 mj / cm 2 whole (back) exposure from the body side, a 6000 mj / cm 2 image (relief) exposure was subsequently performed through a negative film.
- an AFP-1500 exposure machine trade name, manufactured by Asahi Kasei Chemicals
- an ultraviolet fluorescent lamp having a center wavelength of 370 nm.
- the exposure intensity at this time was measured using a UV-35 filter with an UV illuminometer MO-2 manufactured by Oak Works, and the ultraviolet light from the lower lamp, which is the back exposure side, was measured on a glass plate.
- MO-2 UV illuminometer
- the intensity of ultraviolet light measured from the upper lamp on the relief exposure side was 12.5 mWZcm 2 .
- a flexographic printing plate was obtained by exposing the entire plate surface to 2,000 mj / cm 2 using a germicidal lamp having a center wavelength of 254 nm, and then to 1000 mj / cm 2 using an ultraviolet fluorescent lamp.
- the post-exposure amount by the germicidal lamp was calculated from the illuminance measured using the UV-25 filter of the MO-2 machine.
- the uncured photosensitive resin composition obtained in Reference Example 1 was cut into 5 cm X 5 cm, and the entire surface was subjected to a load of 28 g / cm 2 , and was allowed to stand for 24 hours in an atmosphere of 40 ° C and a thickness of 24 hours. The change was measured.
- the thickness reduction rate (cold flow) of the photosensitive resin composition exceeds 2.0%, the plate is highly likely to be deformed and unusable when stored or transported.
- the ink accumulated on the printing plate surface is removed using a cloth or the like.
- the character or net may be chipped, and the ink may not be used for a long time.
- the missing part after rubbing the character part and the net part 100 times using a NP type printing durability tester (manufactured by Shinmura Printing Co., Ltd., contact body: cloth, load lkg) 100 times Observed at, it was better if not missing, and X was bad if missing.
- the cold flow resistance test result of the photosensitive resin composition was as low as 1.3%. It was found that there was no worry about plate deformation occurring.
- the shoulder of the convex line in the image reproducibility evaluation has a good shape and the depth of the concave line is 261 zm, showing good reproducibility. I got it.
- Example 2 All liquid polybutadiene of Example 1 was liquid polybutadiene B-2000 (Nippon Petrochemical The photosensitive resin composition and the printing plate were obtained and evaluated in the same manner as in Example 1, except that the product was replaced with a product name, a trade name, a molecular weight of 3400 and a 1,2-butyl content of 71%). Table 1 shows the results. (Comparative Example 2)
- the photosensitive resin composition was the same as in Example 1 except that the liquid polybutadiene of Example 1 was replaced by liquid polyisoprene LIR-50 (manufactured by Kuraray, trade name, molecular weight 47,000, content of 1,2-butyl 7%). A body and a printing plate were obtained and evaluated. The results are shown in Table 1.
- Liquid polybutazine LIR-305 (manufactured by Kuraray, trade name, molecular weight 28,000, 1,2-butyl 9%) of Example 2 was completely converted to liquid polybutadiene B-2000 (manufactured by Nippon Petrochemical, trade name, molecular weight 3400) , 1,2-vinyl content was 71%), and a light-sensitive resin composition and a printing plate were obtained and evaluated in the same manner as in Example 2. The results are shown in Table 1.
- the photosensitive resin composition for flexographic printing of the present invention has a thickness at the time of transportation of the photosensitive resin structure. It is suitable for obtaining excellent image reproducibility with a small change, good printing durability, and printed matter with less thickening of convex lines and less filling of concave lines.
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- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Materials For Photolithography (AREA)
- Graft Or Block Polymers (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005800189703A CN1965266B (zh) | 2004-06-11 | 2005-06-09 | 柔版印刷板用感光树脂及其制造方法 |
| JP2006514560A JP4651037B2 (ja) | 2004-06-11 | 2005-06-09 | フレキソ印刷版用感光性樹脂 |
| CA002569749A CA2569749A1 (en) | 2004-06-11 | 2005-06-09 | Photosensitive resin for flexographic printing plate |
| US11/628,948 US7960088B2 (en) | 2004-06-11 | 2005-06-09 | Photosensitive resin for flexographic printing plate |
| EP05748897.5A EP1767990B8 (en) | 2004-06-11 | 2005-06-09 | Photosensitive resin for flexographic printing plate |
| AU2005252957A AU2005252957B2 (en) | 2004-06-11 | 2005-06-09 | Photosensitive resin for flexographic printing plate |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004174484 | 2004-06-11 | ||
| JP2004-174484 | 2004-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005121896A1 true WO2005121896A1 (ja) | 2005-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/010577 Ceased WO2005121896A1 (ja) | 2004-06-11 | 2005-06-09 | フレキソ印刷版用感光性樹脂 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7960088B2 (ja) |
| EP (1) | EP1767990B8 (ja) |
| JP (1) | JP4651037B2 (ja) |
| KR (1) | KR100833743B1 (ja) |
| CN (1) | CN1965266B (ja) |
| AU (1) | AU2005252957B2 (ja) |
| CA (1) | CA2569749A1 (ja) |
| WO (1) | WO2005121896A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007058163A1 (ja) * | 2005-11-21 | 2007-05-24 | Asahi Kasei Chemicals Corporation | フレキソ印刷版 |
| JP2007279422A (ja) * | 2006-04-07 | 2007-10-25 | Asahi Kasei Chemicals Corp | フレキソ印刷用感光性樹脂組成物 |
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| US20100112484A1 (en) * | 2008-10-31 | 2010-05-06 | E. I. Du Pont De Nemours And Company | Method for preparing a printing form from a photopolymerizable element |
| JP2019109436A (ja) * | 2017-12-20 | 2019-07-04 | 旭化成株式会社 | フレキソ印刷原版、及びフレキソ印刷版 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101978321B (zh) * | 2008-03-21 | 2013-06-12 | 旭化成电子材料株式会社 | 感光性树脂组合物、感光性树脂层压体、抗蚀图案形成方法、以及印刷线路板、引线框、半导体封装体和凹凸基板的制造方法 |
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| US8563220B2 (en) | 2010-09-01 | 2013-10-22 | E I Du Pont De Nemours And Company | High resolution, solvent resistant, thin elastomeric printing plates |
| JP5697461B2 (ja) * | 2011-01-17 | 2015-04-08 | ユニチカ株式会社 | ポリエステルフィルム、および感光性樹脂構造体 |
| US9598622B2 (en) | 2012-09-25 | 2017-03-21 | Cold Chain Technologies, Inc. | Gel comprising a phase-change material, method of preparing the gel, thermal exchange implement comprising the gel, and method of preparing the thermal exchange implement |
| CN106814541B (zh) * | 2015-11-30 | 2021-04-27 | 乐凯华光印刷科技有限公司 | 一种耐老化柔性版及其制备方法 |
| HUE062162T2 (hu) * | 2016-09-02 | 2023-09-28 | Kuraray Co | Gumikészítmény |
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- 2005-06-09 JP JP2006514560A patent/JP4651037B2/ja not_active Expired - Fee Related
- 2005-06-09 CA CA002569749A patent/CA2569749A1/en not_active Abandoned
- 2005-06-09 WO PCT/JP2005/010577 patent/WO2005121896A1/ja not_active Ceased
- 2005-06-09 KR KR1020067025891A patent/KR100833743B1/ko not_active Expired - Fee Related
- 2005-06-09 AU AU2005252957A patent/AU2005252957B2/en not_active Ceased
- 2005-06-09 US US11/628,948 patent/US7960088B2/en active Active
- 2005-06-09 EP EP05748897.5A patent/EP1767990B8/en not_active Expired - Lifetime
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007058163A1 (ja) * | 2005-11-21 | 2007-05-24 | Asahi Kasei Chemicals Corporation | フレキソ印刷版 |
| JP2007279422A (ja) * | 2006-04-07 | 2007-10-25 | Asahi Kasei Chemicals Corp | フレキソ印刷用感光性樹脂組成物 |
| JP2007279423A (ja) * | 2006-04-07 | 2007-10-25 | Asahi Kasei Chemicals Corp | フレキソ印刷用感光性樹脂組成物 |
| US20100112484A1 (en) * | 2008-10-31 | 2010-05-06 | E. I. Du Pont De Nemours And Company | Method for preparing a printing form from a photopolymerizable element |
| US8465904B2 (en) * | 2008-10-31 | 2013-06-18 | E I Du Pont De Nemours And Company | Method for preparing a printing form from a photopolymerizable element |
| JP2019109436A (ja) * | 2017-12-20 | 2019-07-04 | 旭化成株式会社 | フレキソ印刷原版、及びフレキソ印刷版 |
| JP7012526B2 (ja) | 2017-12-20 | 2022-01-28 | 旭化成株式会社 | フレキソ印刷原版、及びフレキソ印刷版 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005252957B2 (en) | 2008-01-17 |
| EP1767990A1 (en) | 2007-03-28 |
| CN1965266A (zh) | 2007-05-16 |
| KR20070020287A (ko) | 2007-02-20 |
| EP1767990B1 (en) | 2014-09-24 |
| KR100833743B1 (ko) | 2008-05-29 |
| JP4651037B2 (ja) | 2011-03-16 |
| EP1767990A4 (en) | 2010-05-12 |
| EP1767990B8 (en) | 2014-11-19 |
| AU2005252957A1 (en) | 2005-12-22 |
| US7960088B2 (en) | 2011-06-14 |
| CN1965266B (zh) | 2010-12-15 |
| JPWO2005121896A1 (ja) | 2008-04-10 |
| US20080254385A1 (en) | 2008-10-16 |
| CA2569749A1 (en) | 2005-12-22 |
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