WO2018123773A1 - 感光性樹脂組成物、およびそれを含む感光性樹脂印刷版原版 - Google Patents
感光性樹脂組成物、およびそれを含む感光性樹脂印刷版原版 Download PDFInfo
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- WO2018123773A1 WO2018123773A1 PCT/JP2017/045753 JP2017045753W WO2018123773A1 WO 2018123773 A1 WO2018123773 A1 WO 2018123773A1 JP 2017045753 W JP2017045753 W JP 2017045753W WO 2018123773 A1 WO2018123773 A1 WO 2018123773A1
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- photosensitive resin
- polyamide
- fine particles
- inorganic fine
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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
- G03F7/037—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polyamides or polyimides
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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
- G03F7/0047—Photosensitive materials characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/065—Polyamides; Polyesteramides; Polyimides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/48—Polymers modified by chemical after-treatment
- C08G69/50—Polymers modified by chemical after-treatment with aldehydes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/60—Substrates
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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
- G03F7/0042—Photosensitive materials with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists
- G03F7/0043—Chalcogenides; Silicon, germanium, arsenic or derivatives thereof; Metals, oxides or alloys thereof
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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
-
- 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
- G03F7/029—Inorganic compounds; Onium compounds; Organic compounds having hetero atoms other than oxygen, nitrogen or sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
Definitions
- Photosensitive resin composition capable of developing using a solution containing a lower alcohol, excellent in abrasion resistance, and excellent in scraping of ink on the plate surface when squeezed with a blade of a pad printing machine, and photosensitive resin printing Regarding the original edition.
- a photosensitive resin printing plate precursor using a photosensitive resin laminate having a layer formed of a photosensitive resin composition is generally composed of a soluble polymer, a photopolymerizable unsaturated group-containing monomer, and photopolymerization in the photosensitive resin layer. It contains an agent as an essential component, and by irradiating the photosensitive resin layer with ultraviolet light through negative and positive original film, it forms a part that dissolves in the solvent and a part that does not dissolve in the photosensitive resin layer.
- a relief image is formed and used as a printing plate.
- Pad printing using an intaglio printing plate places ink on the plate surface and scrapes it off with a metal doctor blade, or in a ring-shaped ceramic or special metal edge ink cup that acts as a doctor blade. Fill the concave part of the intaglio printing plate with ink by scraping the surface of the plate with an ink cup, transfer the ink to a flexible pad surface such as silicone rubber, and print the ink adhering surface of the pad It is a kind of offset printing that prints by pressing on the body.
- Intaglio printing plates used for pad printing are required to have abrasion resistance on the plate surface because the ink on the plate surface is scraped off with a doctor blade or an ink cup because of the printing method.
- a photosensitive resin composition used in printing applications that require such abrasion resistance a photosensitive resin composition in which inorganic fine particles that are abrasive particles are blended is proposed as shown in Patent Document 1 or 2. ing.
- the present invention has been made in view of the above circumstances, can be developed using a solution containing a lower alcohol, can form a high-definition relief image, has excellent wear resistance, and is a blade of a pad printing machine.
- An object of the present invention is to provide a photosensitive resin composition excellent in ink scraping property on a plate surface when squeezed and a photosensitive resin printing plate precursor.
- the resin composition used for the intaglio printing plate precursor or pad printing plate precursor according to the first aspect of the present invention that solves the above-mentioned problems has (A) an average particle diameter of 0.5 ⁇ m or more and 4 ⁇ m or less and a sphericity of 0 It contains the inorganic fine particle which is .9 or more.
- the photosensitive resin composition according to the second aspect of the present invention includes (A) inorganic fine particles having an average particle diameter of 0.5 ⁇ m or more and 4 ⁇ m or less and a sphericity of 0.9 or more, and (B) an aliphatic ring. And / or a polyamide having a skeleton represented by the general formula (1), (C) a compound having an ethylenic double bond, and (D) a photopolymerization initiator. And
- the plate surface is excellent in abrasion resistance and squeezed with a blade of a pad printing machine. It is possible to provide a resin composition used for an intaglio printing plate precursor or a pad printing plate precursor, and a resin printing plate precursor excellent in ink scraping property.
- a high-definition relief image can be formed, the wear resistance is excellent, and the plate surface is squeezed with a blade of a pad printing machine.
- a photosensitive resin composition excellent in ink scraping property and a photosensitive resin printing plate precursor can be provided.
- the resin composition used for the intaglio printing plate precursor or pad printing plate precursor of the first invention has an average particle size of 0.5 to 4 ⁇ m as component (A), and a sphericity of 0.9 or more.
- Inorganic fine particles hereinafter referred to as “inorganic fine particles (A)”.
- the inorganic fine particles (A) have an average particle diameter of 0.5 ⁇ m or more, so that wear resistance when bladed by a pad printing machine can be secured, and by being 4 ⁇ m or less, squeezed by the blade of the pad printing machine. It is possible to ensure the scraping property of the ink on the plate surface.
- the average particle diameter of the inorganic fine particles (A) is preferably 0.8 ⁇ m or more, more preferably 1.0 ⁇ m or more.
- the average particle size is preferably 4.0 ⁇ m or less, more preferably 3.0 ⁇ m or less.
- the sphericity of the inorganic fine particles (A) is 0.9 or more, preferably 0.90 or more, more preferably 0.90 to 1.0, the surface roughness of the printing plate is reduced. Furthermore, good ink scraping properties can be achieved.
- the average particle diameter of the inorganic fine particles (A) is a median diameter measured by a laser diffraction scattering method.
- the sphericity is the observation of the shape of 50 inorganic fine particles (A) with a scanning electron microscope, the ratio of the shortest diameter / longest diameter of each inorganic fine particle is obtained, and the arithmetic average value of 50 is calculated as true. The sphericity.
- Examples of such inorganic fine particles (A) include simple metal fine particles, inorganic oxide particles, inorganic salt fine particles, fine particles composed of an organic component and an inorganic component.
- inorganic fine particles (A) include simple metal fine particles, inorganic oxide particles, inorganic salt fine particles, fine particles composed of an organic component and an inorganic component.
- silica particles having a relatively close refractive index to B) polyamide, (C) a compound having an ethylenic double bond, and (D) a photopolymerization initiator are preferred.
- amorphous silica is more preferable from the viewpoint of safe handling.
- alumina having a Vickers hardness larger than silica particles can be used, and silica particles and alumina should be mixed and used. Is also possible.
- the method for producing such amorphous silica and alumina having a sphericity of 0.9 or more is not particularly limited.
- silica particles or alumina particles are used as a flame.
- a method of melting silicon powder a method of burning silicon powder or metal aluminum by a VMC (Vaporized Metal Metal Combustion) method, as shown in Patent Document 5, and the like.
- the inorganic fine particles (A) of the present invention preferably have a specific surface area of 10 m 2 / g or less. When it is 10 m 2 / g or less, the fluidity of a resin solution obtained by dissolving a resin composition used in an intaglio printing plate precursor or a pad printing plate precursor in a solvent is good, and formation of a smooth film surface is easy.
- the specific surface area of the inorganic fine particles (A) is more preferably 9 m 2 / g or less, and further preferably 8 m 2 / g or less. In this specification, the specific surface area of the inorganic fine particles (A) can be measured based on the method described in JIS Z8830: 2013.
- the inorganic fine particles (A) have a maximum particle size of preferably 20 ⁇ m or less, more preferably 20.0 ⁇ m or less.
- the maximum particle size of the inorganic fine particles (A) is more preferably 10 ⁇ m or less. The maximum particle size was set by passing inorganic fine particles through a sieve having a corresponding size.
- the inorganic fine particles (A) are included in the pH range of the extraction water from 5.5 to 8.5. By being in this range, aggregation of inorganic fine particles (A) due to electrostatic attraction with other components used in the present invention is suppressed.
- the pH of the extracted water is more preferably in the range of 6.0 to 8.0.
- the inorganic fine particles (A) settle and aggregate during storage in the resin composition solution used when preparing the resin composition used for the intaglio printing plate precursor or pad printing plate precursor of the first invention.
- the electrostatic attraction is small, re-dispersion is easy by stirring and the like, and the handleability is excellent.
- the pH of the extraction water of the inorganic fine particles (A) is obtained by mixing 10% by mass of inorganic fine particle powder in distilled water and stirring the mixture for 30 minutes, and measuring the supernatant water with a pH meter.
- the pH of the inorganic fine particles can be adjusted by allowing the activity inhibitor to act on the active hydroxyl groups of the inorganic fine particles.
- the activity inhibitor may be one or more selected from organic phosphine compounds, sulfide compounds, mercaptan compounds, ketone compounds, and amide compounds, but are not limited thereto. These activity inhibitors can be used by mixing with the inorganic fine particles (A) and heating at 90 to 180 ° C. for 4 to 24 hours.
- inorganic fine particles (A) when used, when arbitrarily blended with (B) polyamide and (C) a compound having an ethylenic double bond, aggregation and reaggregation of inorganic fine particles (A) are suppressed,
- the ink on the surface of the plate can be scraped off with a blade of a pad printing machine.
- the inorganic fine particles (A) are preferably contained in an amount of 3% by mass or more in 100% by mass of the resin composition used for the intaglio printing plate precursor or the pad printing plate precursor in order to impart wear resistance. In order to enable the formation, the content is preferably 70% by mass or less. The content of the inorganic fine particles (A) is more preferably 8% by mass or more and 60% by mass or less.
- a surface modifier examples include (3-acryloylpropyl) trimethoxysilane, methacryloylpropyltrimethoxysilane, methacryloylpropyltriethoxysilane, methacryloyloxymethyltriethoxysilane, and methacryloyloxymethyltrimethoxysilane.
- 3-acryloylpropyl) trimethoxysilane methacryloylpropyltrimethoxysilane
- methacryloylpropyltriethoxysilane methacryloyloxymethyltriethoxysilane
- methacryloyloxymethyltrimethoxysilane methacryloyloxymethyltrimethoxysilane.
- the resin composition used for the intaglio printing plate precursor or pad printing plate precursor of the first aspect of the present invention optionally has (B) polyamide and (C) ethylenic double bond with respect to the above-mentioned inorganic fine particles (A). It can further contain at least one selected from the group consisting of a compound and (D) a photopolymerization initiator.
- the resin composition used for the intaglio printing plate precursor or the pad printing plate precursor can optionally contain (B) polyamide (hereinafter referred to as “polyamide (B)”).
- the polyamide (B) may include a polyamide having an aliphatic ring in the molecular main chain and / or a polyamide having a skeleton represented by the general formula (1). Further, the polyamide (B) may include a polyamide having a methylene chain having 8 or more carbon atoms.
- the polyamide (B) includes a plurality of polyamides selected from a polyamide having an aliphatic ring in the molecular main chain, a polyamide having a skeleton represented by the general formula (1), and a polyamide having a methylene chain having 8 or more carbon atoms. Can be combined.
- Polyamide (B) has a function as a carrier resin for maintaining the form of a resin composition used for an intaglio printing plate precursor or a pad printing plate precursor in a solid state.
- the polyamide (B) is used for imparting developability with a solution containing a lower alcohol to the resin layer comprising the resin composition of the first invention.
- the printing plate obtained from the resin composition used for the intaglio printing plate precursor or pad printing plate precursor containing the polyamide (B) should be used in a high humidity environment. It is not affected by water and has good wear resistance.
- the number average molecular weight of the polyamide (B) is preferably 10,000 to 1,000,000.
- the resin composition used for the intaglio printing plate precursor or pad printing plate precursor has a function as a carrier resin for maintaining the form in a solid state, and 1,000,000 or less Therefore, when the resin layer comprising the resin composition of the first invention is imagewise exposed to ultraviolet light, selectively cured, and the uncured portion is removed by development, a lower alcohol is contained. It can be quickly removed with a developer.
- the lower alcohol refers to an alcohol having 5 or less carbon atoms in the molecule.
- the number average molecular weight of the polyamide (B) is more preferably 20,000 or more, further preferably 30,000 or more, more preferably 600,000 or less, and further preferably 200,000 or less.
- the number average molecular weight of polyamide (B) can be made into the number average molecular weight of polystyrene conversion measured by gel permeation chromatography (GPC).
- the polyamide (B) content in 100% by mass of the resin composition used for the intaglio printing plate precursor or pad printing plate precursor is preferably 20 to 80% by mass. By containing 20% by mass or more, it is possible to keep the composition in a solid state. In addition, the inclusion of 80% by mass or less facilitates the formation of a relief image.
- the content of the polyamide (B) is preferably 20% by mass or more, more preferably 30% by mass or more.
- the content of polyamide (B) is preferably 80% by mass or less, more preferably 70% by mass or less.
- a polyamide having an aliphatic ring in the molecular main chain can be obtained by copolycondensation of a diamine and / or dicarboxylic acid having an aliphatic ring and a derivative thereof when the polyamide is polymerized.
- the aliphatic ring include alicyclic compounds such as cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, and cyclooctane.
- the polyamide (B) has a divalent residue of these alicyclic compounds in the molecular main chain. Of these, a residue of cyclohexane is preferable, and for example, polyamide (B) having a 4,4'-diaminodicyclohexylmethane adipate skeleton residue is preferable.
- a polyamide for example, a polycondensate containing at least 4,4'-diaminodicyclohexylmethane adipate is known. Further, a copolycondensation product of 4,4'-diaminodicyclohexylmethane adipate and ⁇ -caprolactam and hexamethylenediammonium adipate as shown in Patent Document 1 is known.
- the monomer components containing these aliphatic rings are 10 to 10 mol% based on the total polyamide constituents, that is, aminocarboxylic acid units (including the case of lactam as a raw material), dicarboxylic acid units and diamine units. It is preferably 100 mol%, more preferably 10 to 80 mol%.
- the content of the monomer component containing an aliphatic ring is 10 mol% or more, the content of the resin component used for the intaglio printing plate precursor or the pad printing plate precursor is lower than the lower alcohol when the resin layer is formed. Solubility is improved.
- polyamide (B) can have a skeleton represented by the following general formula (1) with or without an aliphatic ring in the molecular main chain.
- the polyamide (B) having a skeleton represented by the general formula (1) can be obtained by reacting polyamide amide bond hydrogen, formaldehyde, and methanol to N-methoxymethylation of the amide bond.
- 10 to 50 mol% of amide bond hydrogen in the molecule is methoxymethylated.
- the methoxymethylation 10 mol% or more the solubility of the lower alcohol is increased. Therefore, the resin layer made of the resin composition of the first invention is imagewise exposed to ultraviolet light and selectively cured. Thus, when the uncured portion is removed by development, it can be quickly removed with a developer containing a lower alcohol. Moreover, the abrasion resistance of a polymer can be hold
- the methoxymethylation of amide bond hydrogen is more preferably 10 mol% or more, and even more preferably 20 mol% or more.
- the methoxymethylation is more preferably 80 mol% or less, and even more preferably 70 mol% or less.
- the methoxymethylation rate of hydrogen at the amide bond can be controlled by the amount of formamide and methanol added, the reaction temperature, and the reaction time.
- polystyrene resin for example, “Tolezin” (registered) having a number average molecular weight of 40,000, in which 30 mol% of the amide bond of 6-nylon is modified to the skeleton represented by the general formula (1) Trademark) MF-30 (manufactured by Nagase ChemteX Corporation).
- polyamide (B) a polyamide having an aliphatic ring in the molecular main chain and a polyamide having a skeleton represented by the general formula (1) can be mixed and used.
- the polyamide (B) can include a polyamide having a methylene chain having 8 or more carbon atoms.
- a polyamide having a methylene chain having 8 or more carbon atoms For example, it is also possible to use so-called copolymer nylon obtained by copolymerizing a monomer having a methylene chain having 8 or more carbon atoms such as nylon 610, nylon 11 and nylon 12 with nylon 6 and nylon 66.
- the monomer having a methylene chain having 8 or more carbon atoms is contained in a weight ratio of 15 to 60% by weight of the monomer in the polyamide, it can be dissolved in the lower alcohol.
- the methylene chain has 8 or more carbon atoms, it is preferable because it can be dissolved in a lower alcohol, and when the carbon number is 12 or less, it is economically advantageous.
- Examples of the polyamide having a methylene chain having 8 or more carbon atoms include “Amilan” (registered trademark) CM8000 (manufactured by Toray Industries, Inc.) obtained by copolymerizing nylon 6/66/610/12.
- polyamide (B) a polyamide having a methylene chain having 8 or more carbon atoms and a polyamide having an aliphatic ring in the molecular main chain and / or a skeleton represented by the general formula (1) are mixed. Can also be used.
- the resin composition used for the intaglio printing plate precursor or pad printing plate precursor of the first invention can optionally contain (C) an ethylenic double bond-containing compound.
- Specific examples of the (C) ethylenic double bond-containing compound preferably used include the following, but are not limited thereto.
- the (C) ethylenic double bond-containing compound preferably contains a hydroxyl group in the molecule.
- Such (C) ethylenic double bond-containing compounds include 2-hydroxy-3-phenoxypropyl (meth) acrylate, [4- (hydroxymethyl) cyclohexyl] methyl (meth) acrylate, 2-hydroxyethyl (meta) ) Acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, ⁇ -hydroxy- ⁇ ′-(meth) acryloyloxyethyl phthalate, 3 -Chloro-2-hydroxypropyl (meth) acrylate, glycerol di (meth) acrylate and the like.
- the (C) ethylenic double bond-containing compound having two or more hydroxyl groups can suppress swelling of the intaglio printing plate due to the organic solvent of the ink used for pad printing due to hydrogen bonding of the hydroxyl groups.
- examples of such compounds include glycerin mono (meth) acrylate and pentaerythritol mono (meth) acrylate, but are not limited to these examples.
- the content of these (C) ethylenic double bond-containing compounds is preferably 5 to 70% by mass with respect to 100% by mass of the photosensitive resin composition. When it is 5% by mass or more, the printing plate can be used without swelling when printing with ink, and when it is 70% by mass or less, the resin used for the intaglio printing plate precursor or the pad printing plate precursor This is preferable because the composition can be easily molded.
- the ethylenic double bond-containing compound is preferably 10 parts by mass or more, more preferably 20 parts by mass or more, relative to 100 parts by mass of the polyamide (B).
- the content of the (C) ethylenic double bond-containing compound is more preferably 200 parts by mass or less, and still more preferably 100 parts by mass or less.
- the ethylenic double bond-containing compound preferably contains both an acryloyl group and a methacryloyl group, and the number of methacryloyl groups in the (C) ethylenic double bond-containing compound is larger than the number of acryloyl groups. It is preferable. In general, a methacryloyl group has a slower reaction rate than an acryloyl group. Therefore, when ultraviolet rays are irradiated through a positive film, the concave portions of the relief are deepened due to the large number of methacryloyl groups. The depth of the concave portion can be easily adjusted by the screen eyes.
- the resin composition used for the intaglio printing plate precursor or the pad printing plate precursor according to the first aspect of the present invention may optionally contain (D) a photopolymerization initiator.
- a photopolymerization initiator can be used as long as it can polymerize a polymerizable carbon-carbon unsaturated group by light. Especially, what has the function to produce
- Examples of the photopolymerization initiator include benzoin alkyl ethers, benzophenones, anthraquinones, benzyls, acetophenones, and diacetyls.
- the blending amount of the photopolymerization initiator is preferably in the range of 0.1 to 15% by mass with respect to 100% by mass of the photosensitive resin composition. When the content is 0.1% by mass or more, the relief image formability is improved, and when the content is 15% by mass or less, the precipitation of the photopolymerization initiator can be suppressed.
- the compounding quantity of a photoinitiator is more preferable in it being 0.5 mass% or more, More preferably, it is good in it being 1 mass% or more.
- the blending amount of (D) the photopolymerization initiator is more preferably 12% by mass or less, and further preferably 10% by mass or less.
- the resin composition used in the intaglio printing plate precursor or pad printing plate precursor according to the first aspect of the present invention includes ethylene glycol, diethylene glycol, triethylene glycol, glycerin and the like as a compatibility aid for improving compatibility and flexibility. It is also possible to add polyhydric alcohols such as derivatives, trimethylolpropane and its derivatives, trimethylolethane and its derivatives, pentaerythritol and its derivatives. These polyhydric alcohols are preferably added in an amount of 30% by mass or less based on the entire resin composition used for the intaglio printing plate precursor or the pad printing plate precursor. In particular, by improving the compatibility, turbidity of the resin composition and bleeding out of low molecular weight components can be suppressed.
- the intaglio printing plate formed from the resin printing plate precursor using the resin composition used in the intaglio printing plate precursor or pad printing plate precursor of the first invention in order to form a recess having a good shape, You may mix
- Preferred ultraviolet absorbers include benzotriazole-based, triazine-based, and benzophenone-based compounds, and one or more of these can be used.
- the blending amount of the UV absorber is preferably in the range of 0.001 to 5% by mass with respect to the total resin composition.
- a conventionally known polymerization inhibitor can be added.
- Preferable polymerization inhibitors include phenols, hydroquinones, catechols, N-nitrosamine derivatives and the like. These blending amounts are preferably used in the range of 0.001 to 5 parts by mass with respect to 100 parts by mass of the total resin composition.
- dyes, pigments, surfactants, antifoaming agents, fragrances, and the like can be added as other components to the resin composition used in the intaglio printing plate precursor or pad printing plate precursor of the first invention.
- the photosensitive resin composition of the second aspect of the present invention comprises (A) inorganic fine particles having an average particle diameter of 0.5 ⁇ m or more and 4 ⁇ m or less and a sphericity of 0.9 or more, and (B) an aliphatic ring. It contains a polyamide having a molecular main chain and / or a specific skeleton, (C) a compound having an ethylenic double bond, and (D) a photopolymerization initiator.
- the photosensitive resin composition comprises (A) inorganic fine particles having an average particle diameter of 0.5 ⁇ m or more and 4 ⁇ m or less and a sphericity of 0.9 or more, and (B) a methylene chain having 8 or more carbon atoms. And (C) a compound having an ethylenic double bond, and (D) a photopolymerization initiator.
- the polyamide described above can include a polyamide having an aliphatic ring in the molecular main chain, and / or a polyamide having a specific skeleton, and / or a polyamide having a methylene chain having 8 or more carbon atoms.
- the photosensitive resin composition of the second aspect of the present invention is an inorganic fine particle (hereinafter referred to as “inorganic fine particle”) having an average particle size of 0.5 ⁇ m or more and 4 ⁇ m or less and a sphericity of 0.9 or more as component (A). (A) ").
- inorganic fine particle having an average particle size of 0.5 ⁇ m or more and 4 ⁇ m or less and a sphericity of 0.9 or more as component (A).
- the inorganic fine particles (A) have an average particle diameter of 0.5 ⁇ m or more, so that the wear resistance when bladed by a pad printing machine can be ensured, and when 4.0 ⁇ m or less, It is possible to ensure the ink scraping property of the plate surface when squeegeeing.
- the average particle diameter of the inorganic fine particles (A) is preferably 0.8 ⁇ m or more, more preferably 1.0 ⁇ m or more.
- the average particle size is preferably 4.0 ⁇ m or less, more preferably 3.0 ⁇ m or less.
- the sphericity of the inorganic fine particles (A) is 0.9 or more, preferably 0.90 or more, more preferably 0.90 to 1.0, the surface roughness of the printing plate is reduced.
- the average particle diameter of the inorganic fine particles (A) is a median diameter measured by a laser diffraction scattering method.
- the sphericity is the observation of the shape of 50 inorganic fine particles (A) with a scanning electron microscope, the ratio of the shortest diameter / longest diameter of each inorganic fine particle is obtained, and the arithmetic average value of 50 is calculated as true. The sphericity.
- Examples of such inorganic fine particles (A) include simple metal fine particles, inorganic oxide particles, inorganic salt fine particles, fine particles composed of an organic component and an inorganic component.
- Silica particles having a relatively close refractive index to the compound having a heavy bond and (D) the photopolymerization initiator are preferred.
- amorphous silica is more preferable from the viewpoint of safe handling.
- alumina having a Vickers hardness larger than silica particles can be used, and silica particles and alumina should be mixed and used. Is also possible.
- the method for producing such amorphous silica and alumina having a sphericity of 0.9 or more is not particularly limited.
- silica particles or alumina particles are used as a flame.
- a method of melting silicon powder a method of burning silicon powder or metal aluminum by a VMC (Vaporized Metal Metal Combustion) method, as shown in Patent Document 5, and the like.
- the inorganic fine particles (A) of the present invention preferably have a specific surface area of 10 m 2 / g or less. When it is 10 m 2 / g or less, the fluidity of a resin solution obtained by dissolving a photosensitive resin composition in a solvent is good, and formation of a smooth film surface is easy.
- the specific surface area of the inorganic fine particles (A) is more preferably 9 m 2 / g or less, and further preferably 8 m 2 / g or less. In this specification, the specific surface area of the inorganic fine particles (A) can be measured based on the method described in JIS Z8830: 2013.
- the inorganic fine particles (A) have a maximum particle size of preferably 20 ⁇ m or less, more preferably 20.0 ⁇ m or less.
- the maximum particle size of the inorganic fine particles (A) is more preferably 10 ⁇ m or less. The maximum particle size was set by passing inorganic fine particles through a sieve having a corresponding size.
- the inorganic fine particles (A) are included in the pH range of the extraction water from 5.5 to 8.5. By being in this range, aggregation of inorganic fine particles (A) due to electrostatic attraction with other components used in the present invention is suppressed. Further, even if the inorganic fine particles (A) settle and aggregate during storage in the photosensitive resin composition solution used when producing the photosensitive resin composition of the second present invention, the electrostatic attractive force is small. Therefore, it is easy to re-disperse with stirring and the like, and it is excellent in handleability.
- the pH of the extraction water of the inorganic fine particles (A) is obtained by mixing 10% by mass of inorganic fine particle powder in distilled water and stirring the mixture for 30 minutes, and measuring the supernatant water with a pH meter.
- the pH of the inorganic fine particles can be adjusted by allowing the activity inhibitor to act on the active hydroxyl groups of the inorganic fine particles.
- the activity inhibitor may be one or more selected from organic phosphine compounds, sulfide compounds, mercaptan compounds, ketone compounds, and amide compounds, but are not limited thereto. These activity inhibitors can be used by mixing with the inorganic fine particles (A) and heating at 90 to 180 ° C. for 4 to 24 hours.
- inorganic fine particles (A) When such inorganic fine particles (A) are used, (B) polyamide having an aliphatic ring in the molecular main chain and / or having a skeleton represented by the general formula (1), (C) ethylenic double When blended with a compound having a bond, the aggregation and reaggregation of the inorganic fine particles (A) are suppressed, and the ink on the plate surface can be scraped well with a blade of a pad printing machine.
- the inorganic fine particles (A) are preferably contained in an amount of 3% by mass or more in 100% by mass of the photosensitive resin composition in order to impart wear resistance, and 70% by mass or less in order to enable formation of a layer. It is preferable that The content of the inorganic fine particles (A) is more preferably 8% by mass or more and 60% by mass or less.
- a surface modifier examples include (3-acryloylpropyl) trimethoxysilane, methacryloylpropyltrimethoxysilane, methacryloylpropyltriethoxysilane, methacryloyloxymethyltriethoxysilane, and methacryloyloxymethyltrimethoxysilane.
- 3-acryloylpropyl) trimethoxysilane methacryloylpropyltrimethoxysilane
- methacryloylpropyltriethoxysilane methacryloyloxymethyltriethoxysilane
- methacryloyloxymethyltrimethoxysilane methacryloyloxymethyltrimethoxysilane.
- the photosensitive resin composition of the second aspect of the present invention comprises (B) a polyamide having an aliphatic ring in the molecular main chain and / or a polyamide having a skeleton represented by the general formula (1) (hereinafter referred to as “polyamide (B)”. ").
- the polyamide (B) has a function as a carrier resin for keeping the form of the photosensitive resin composition in a solid state.
- the polyamide (B) is used for imparting developability with a solution containing a lower alcohol to the photosensitive resin layer.
- the printing plate obtained from the photosensitive resin composition containing the polyamide (B) is not affected by water even when used in a high-humidity environment. Has wear resistance.
- the number average molecular weight of the polyamide (B) is preferably 10,000 to 1,000,000. By being 10,000 or more, it has a function as a carrier resin for making the photosensitive resin composition into a solid state and maintaining the form, and by being 1,000,000 or less, the photosensitive resin layer is formed. When the image is exposed with ultraviolet light, selectively cured, and the uncured portion is removed by development, it can be quickly removed with a developer containing a lower alcohol.
- the lower alcohol refers to an alcohol having 5 or less carbon atoms in the molecule.
- the number average molecular weight of the polyamide (B) is more preferably 20,000 or more, further preferably 30,000 or more, more preferably 600,000 or less, and further preferably 200,000 or less. In this specification, the number average molecular weight of polyamide (B) can be made into the number average molecular weight of polystyrene conversion measured by gel permeation chromatography (GPC).
- the content of polyamide (B) in 100% by mass of the photosensitive resin composition is preferably 20 to 80% by mass. By containing 20% by mass or more, it is possible to keep the composition in a solid state. In addition, the inclusion of 80% by mass or less facilitates the formation of a relief image.
- the content of the polyamide (B) is preferably 20% by mass or more, more preferably 30% by mass or more.
- the content of polyamide (B) is preferably 80% by mass or less, more preferably 70% by mass or less.
- a polyamide having an aliphatic ring in the molecular main chain can be obtained by copolycondensation of a diamine and / or dicarboxylic acid having an aliphatic ring and a derivative thereof when the polyamide is polymerized.
- the aliphatic ring include alicyclic compounds such as cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, and cyclooctane.
- the polyamide (B) has a divalent residue of these alicyclic compounds in the molecular main chain. Of these, a residue of cyclohexane is preferable, and for example, polyamide (B) having a 4,4'-diaminodicyclohexylmethane adipate skeleton residue is preferable.
- a polyamide for example, a polycondensate containing at least 4,4'-diaminodicyclohexylmethane adipate is known. Further, a copolycondensation product of 4,4'-diaminodicyclohexylmethane adipate and ⁇ -caprolactam and hexamethylenediammonium adipate as shown in Patent Document 1 is known.
- the monomer components containing these aliphatic rings are 10 to 10 mol% based on the total polyamide constituents, that is, aminocarboxylic acid units (including the case of lactam as a raw material), dicarboxylic acid units and diamine units. It is preferably 100 mol%, more preferably 10 to 80 mol%.
- the content of the monomer component containing an aliphatic ring is 10 mol% or more, solubility in a lower alcohol when the photosensitive resin composition is a photosensitive resin layer is improved.
- the photosensitive resin layer is exposed imagewise with ultraviolet light, selectively cured, and the uncured portion is removed by development, it can be quickly removed with a developer containing a lower alcohol. Become. When it is 80 mol% or less, chemical resistance as a crystalline polymer is maintained well.
- the polyamide (B) has a skeleton represented by the following general formula (1) with or without an aliphatic ring in the molecular main chain.
- the polyamide (B) having a skeleton represented by the general formula (1) can be obtained by reacting polyamide amide bond hydrogen, formaldehyde, and methanol to N-methoxymethylation of the amide bond.
- 10 to 50 mol% of amide bond hydrogen in the molecule is methoxymethylated.
- the methoxymethylation is 10 mol% or more, the solubility of the lower alcohol increases, so the photosensitive resin layer is exposed imagewise with ultraviolet light, selectively cured, and the uncured portion is developed. When removing, it can be quickly removed with a developer containing a lower alcohol. Moreover, the abrasion resistance of a polymer can be hold
- the methoxymethylation of amide bond hydrogen is more preferably 10 mol% or more, and even more preferably 20 mol% or more.
- the methoxymethylation is more preferably 80 mol% or less, and even more preferably 70 mol% or less.
- polystyrene resin for example, “Tolezin” (registered) having a number average molecular weight of 40,000, in which 30 mol% of the amide bond of 6-nylon is modified to the skeleton represented by the general formula (1) Trademark) MF-30 (manufactured by Nagase ChemteX Corporation).
- polyamide (B) a polyamide having an aliphatic ring in the molecular main chain and a polyamide having a skeleton represented by the general formula (1) can be mixed and used.
- the polyamide (B) can include a polyamide having a methylene chain having 8 or more carbon atoms.
- a polyamide having a methylene chain having 8 or more carbon atoms For example, it is also possible to use so-called copolymer nylon obtained by copolymerizing a monomer having a methylene chain having 8 or more carbon atoms such as nylon 610, nylon 11 and nylon 12 with nylon 6 and nylon 66.
- the monomer having a methylene chain having 8 or more carbon atoms is contained in a weight ratio of 15 to 60% by weight of the monomer in the polyamide, it can be dissolved in the lower alcohol.
- the methylene chain has 8 or more carbon atoms, it is preferable because it can be dissolved in a lower alcohol, and when the carbon number is 12 or less, it is economically advantageous.
- polyamide having a methylene chain having 8 or more carbon atoms examples include “Amilan” (registered trademark) CM8000 (manufactured by Toray Industries, Inc.) obtained by copolymerizing nylon 6/66/610/12. Further, as the polyamide (B), a polyamide having a methylene chain having 8 or more carbon atoms is used by mixing with a polyamide having an aliphatic ring in the molecular main chain and / or a polyamide having a skeleton represented by the general formula (1). It is also possible to do.
- the photosensitive resin composition of 2nd this invention contains the compound which has (C) ethylenic double bond.
- Specific examples of the (C) ethylenic double bond-containing compound preferably used include the following, but are not limited thereto.
- the (C) ethylenic double bond-containing compound preferably contains a hydroxyl group in the molecule.
- those having one or more hydroxyl groups have good compatibility with the polyamide (B), and the pH of the extracted water is 5.5 to 8.5.
- the dispersibility of the inorganic fine particles (A) in the range is good, and when blended with the photosensitive resin composition, a uniform composition can be produced.
- Such (C) ethylenic double bond-containing compounds include 2-hydroxy-3-phenoxypropyl (meth) acrylate, [4- (hydroxymethyl) cyclohexyl] methyl (meth) acrylate, 2-hydroxyethyl (meta) ) Acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, ⁇ -hydroxy- ⁇ ′-(meth) acryloyloxyethyl phthalate, 3 -Chloro-2-hydroxypropyl (meth) acrylate, glycerol di (meth) acrylate and the like.
- the (C) ethylenic double bond-containing compound having two or more hydroxyl groups can suppress swelling of the intaglio printing plate due to the organic solvent of the ink used for pad printing due to hydrogen bonding of the hydroxyl groups.
- examples of such compounds include glycerin mono (meth) acrylate and pentaerythritol mono (meth) acrylate, but are not limited to these examples.
- the content of the (C) ethylenic double bond-containing compound is preferably 5 to 200 parts by mass with respect to 100 parts by mass of the polyamide (B). When the amount is 5 parts by mass or more, when printing using ink, the printing plate can be used without swelling, and when it is 200 parts by mass or less, the photosensitive resin composition can be easily molded. .
- the ethylenic double bond-containing compound is preferably 10 parts by mass or more, more preferably 20 parts by mass or more, relative to 100 parts by mass of the polyamide (B).
- the content of the (C) ethylenic double bond-containing compound is more preferably 200 parts by mass or less, and still more preferably 100 parts by mass or less.
- the ethylenic double bond-containing compound preferably contains both an acryloyl group and a methacryloyl group, and the number of methacryloyl groups in the (C) ethylenic double bond-containing compound is larger than the number of acryloyl groups. It is preferable. In general, a methacryloyl group has a slower reaction rate than an acryloyl group. Therefore, when ultraviolet rays are irradiated through a positive film, the concave portions of the relief are deepened due to the large number of methacryloyl groups. The depth of the concave portion can be easily adjusted by the screen eyes.
- the photosensitive resin composition of the second present invention contains (D) a photopolymerization initiator.
- a photopolymerization initiator can be used as long as it can polymerize a polymerizable carbon-carbon unsaturated group by light. Especially, what has the function to produce
- the photopolymerization initiator include benzoin alkyl ethers, benzophenones, anthraquinones, benzyls, acetophenones, and diacetyls.
- the blending amount of the photopolymerization initiator is preferably in the range of 0.1 to 20 parts by mass with respect to 100 parts by mass of the polyamide (B). If it is 0.1 parts by mass or more, the relief image formability is improved, and if it is 20 parts by mass or less, precipitation of the photopolymerization initiator can be suppressed.
- the compounding quantity of a photoinitiator becomes like this. More preferably, it is 0.5 mass part or more, More preferably, it is good in it being 1 mass part or more.
- the blending amount of (D) the photopolymerization initiator is more preferably 10 parts by mass or less, and further preferably 8 parts by mass or less.
- ethylene glycol, diethylene glycol, triethylene glycol, glycerin and derivatives thereof, trimethylolpropane and derivatives thereof, triglycerides as compatibility aids for enhancing compatibility and flexibility.
- polyhydric alcohols such as methylolethane and its derivatives, pentaerythritol and its derivatives. These polyhydric alcohols are preferably added in an amount of 30% by mass or less based on the entire photosensitive resin composition. In particular, by improving the compatibility, turbidity of the resin composition and bleeding out of low molecular weight components can be suppressed.
- an ultraviolet absorber may be blended for the purpose of suppressing the scattering of light.
- Preferred ultraviolet absorbers include benzotriazole-based, triazine-based, and benzophenone-based compounds, and one or more of these can be used.
- the blending amount of the ultraviolet absorber is preferably in the range of 0.001 to 5% by mass with respect to the total photosensitive resin composition.
- a conventionally known polymerization inhibitor can be added in order to increase the thermal stability of the photosensitive resin composition of the second invention.
- Preferable polymerization inhibitors include phenols, hydroquinones, catechols, N-nitrosamine derivatives and the like. These blending amounts are preferably used in the range of 0.001 to 5 parts by mass with respect to 100 parts by mass of the total photosensitive resin composition.
- dyes, pigments, surfactants, antifoaming agents, fragrances, and the like can be added as other components to the photosensitive resin composition of the second invention.
- the photosensitive resin laminate will be described.
- the resin composition used for the intaglio printing original plate or the pad printing original plate used in the intaglio printing original plate or the pad printing original plate of the first invention, and the photosensitive resin composition of the second invention are summarized.
- the photosensitive resin laminated body which consists of the photosensitive resin composition of this invention is a photosensitive resin layer formed using the photosensitive resin composition of this invention at least an adhesive layer (G) on a support body (E). (F) and the protective layer are laminated in this order.
- the photosensitive resin printing plate precursor of this invention is formed using the said photosensitive resin laminated body. That is, the photosensitive resin printing plate precursor of the present invention is a photosensitive resin composed of a photosensitive resin composition formed on the support (E) using the adhesive layer (G) and the photosensitive resin composition of the present invention.
- the conductive resin layer (F) and the protective layer are sequentially laminated.
- plastic sheets such as polyester, synthetic rubber sheets such as styrene-butadiene rubber, and metal plates such as steel, stainless steel, and aluminum can be used.
- metal doctor blade or for putting ink into an ink cup with a ring-shaped ceramic or special metal edge that acts as a doctor blade and scraping the plate surface with an ink cup It is preferable to use a metal plate so that the support is not deformed by the force of scraping.
- the thickness of the support is not particularly limited, but is preferably in the range of 100 to 500 ⁇ m from the viewpoint of handleability. If it is 100 micrometers or more, it will be suppressed that a support body deform
- the support (E) is preferably subjected to an easy adhesion treatment for the purpose of improving the adhesion with the photosensitive resin layer (F).
- Examples of the easy adhesion treatment method include mechanical treatment such as sand blasting, physical treatment such as corona discharge, and chemical treatment such as coating.
- the adhesive layer (G) may be provided by coating. To preferred.
- the adhesive layer (G) is not particularly limited as long as it improves the adhesion between the support (E) and the photosensitive resin layer (F).
- the adhesive layer (G) preferably further improves adhesiveness by containing at least a part of the constituent units contained in the photosensitive resin layer (F).
- Examples of such a common structural unit include a polymer compound that is soluble in a solution containing a lower alcohol.
- a preferred example of the soluble polymer compound is a polyamide resin containing a unit of ⁇ -caprolactam.
- the photosensitive resin layer (F) is formed from the photosensitive resin composition of the present invention.
- the thickness of the photosensitive resin layer (F) is preferably 0.01 mm or more, and more preferably 0.02 mm or more from the viewpoint of having a sufficient relief depth and improving printability.
- the thickness of the photosensitive resin layer (F) is preferably 1 mm or less, more preferably 0.7 mm or less from the viewpoint of cost and resource saving.
- the photosensitive resin printing plate precursor of the present invention preferably has a cover film (H) as a protective layer on the photosensitive resin layer (F) from the viewpoint of surface protection and prevention of adhesion of foreign substances and the like.
- the photosensitive resin layer (F) may be in direct contact with the cover film (H), or may have one or more layers between the photosensitive resin layer (F) and the cover film (H). Good.
- Examples of the layer between the photosensitive resin layer (F) and the cover film (H) include a peeling auxiliary layer (I) provided for the purpose of preventing adhesion of the photosensitive resin layer surface.
- the material of the cover film (H) is not particularly limited, but a plastic sheet such as polyester or polyethylene is preferably used.
- the thickness of the cover film (H) is not particularly limited, but a range of 10 to 150 ⁇ m is preferable from the viewpoints of handleability and cost.
- the cover film surface may be roughened for the purpose of improving the adhesion of the original film.
- the photosensitive resin layer (F) made of the photosensitive resin composition is prepared by using the photosensitive resin composition solution obtained by the above-described method as a support (E), preferably a support (E) having an adhesive layer (G). ), And can be obtained by drying. Then, the photosensitive resin printing plate precursor can be obtained by bringing the cover film (H) optionally coated with the peeling auxiliary layer (I) into close contact with the photosensitive resin layer (F). Alternatively, a photosensitive resin printing plate precursor can be obtained by preparing a photosensitive resin sheet by dry film formation and laminating the photosensitive resin sheet between the support (E) and the cover film (H). Furthermore, it is also possible to provide a photosensitive resin composition not containing inorganic fine particles (A) between the adhesive layer (G) and the photosensitive resin layer (F).
- the method of forming the release auxiliary layer (I) is not particularly limited, but the component of the release auxiliary layer (I) is dissolved in a solvent for the convenience of thin film formation.
- a method in which the solution is applied onto the cover film (H) and the solvent is removed is particularly preferably performed. Examples of the method for removing the solvent include hot air drying, far-infrared drying, and natural drying.
- the solvent for dissolving the peeling auxiliary layer (I) component is not particularly limited, but water, alcohol, or a mixture of water and alcohol is preferably used.
- the printing plate of the present invention can be obtained by exposing and developing the above-described photosensitive resin printing plate precursor of the present invention.
- the cover film (H) When the photosensitive resin printing plate precursor has a cover film (H), the cover film (H) is peeled off, a positive original film is brought into close contact with the photosensitive resin layer (F), and the photosensitive resin layer ( F) is photocured.
- Ultraviolet irradiation can be performed using a high-pressure mercury lamp, an ultrahigh-pressure mercury lamp, a metal halide lamp, a xenon lamp, a carbon arc lamp, a chemical lamp, or the like that can usually irradiate a wavelength of 300 to 400 nm.
- a halftone screen film of 300 lines and 90% is brought into close contact with each other and irradiated with ultraviolet rays, thereby adjusting the depth of the recesses to be appropriate by forming screen eyes in the recesses.
- the photosensitive resin printing plate precursor is immersed in a developer, and a relief image is formed on the substrate by a brush type developing device that removes uncured portions by rubbing with a brush.
- a brush type developing device that removes uncured portions by rubbing with a brush.
- a spray type developing device As the developer, a solution containing a lower alcohol or a developer further containing a surfactant can be used.
- the liquid temperature during development is preferably 15 to 40 ° C.
- the intaglio printing plate can be obtained by drying for about 10 minutes at 50 to 70 ° C. and further, if necessary, actinic ray treatment in air or vacuum.
- the photosensitive resin composition of the present invention is most suitable for use as a photosensitive resin printing plate precursor for intaglio printing or pad printing, but for lithographic printing, relief printing, stencil printing, photoresist. It can also be used.
- An intaglio printing plate whose support is a plastic film is lighter and easier to handle than an intaglio printing plate using a metal as a support.
- double-sided tape is applied to the support of the intaglio printing plate, and one side of the double-sided tape is fixed to the plate base of the pad printing machine.
- the support is strongly adhered to the support, so it takes time to attach and detach the intaglio printing plate, It may be difficult to use from the viewpoint of re-sticking work (replacement work) (reworkability).
- a member for this purpose.
- a plate preferably has an adhesive layer on at least one side of the substrate.
- the adhesive layer is preferably located in the outermost layer.
- any of metal and plastic, wood, glass, ceramics, etc. can be adopted.
- the metal is preferably iron or aluminum
- the plastic is preferably polyester.
- iron is particularly preferably used when a magnet is used for the plate base of the pad printing machine because it can be easily fixed to the plate base.
- the thickness of the substrate is preferably 200 ⁇ m or more and 1 cm or less.
- Ink cup with edge made of ring-shaped ceramics or special metal that has mechanical strength when it is 200 ⁇ m or more, puts ink on the plate surface, scrapes with a metal doctor blade, or acts as a doctor blade It is possible to satisfactorily put ink into the ink and scrape the plate surface with an ink cup. That is, the deformation of the support can be suppressed when the ink is scraped off by the blade.
- a base material is preferable from a viewpoint of attachment to a printing press and cost because it is 1 cm or less.
- the pressure-sensitive adhesive layer is a self-adhesive layer, and for example, the pressure-sensitive adhesive layer described in Japanese Patent Application Laid-Open No. 2014-122285 can be used, but this is not restrictive.
- the thickness of the adhesive layer is preferably 1 to 100 ⁇ m, and more preferably 5 to 75 ⁇ m. By setting the thickness to 1 ⁇ m or more, a sufficient adhesive force can be secured to the adherend, and by setting the thickness to 100 ⁇ m or less, processing at the time of forming the adhesive layer becomes easy.
- Such a plate is fixed to the support of the intaglio printing plate via the adhesive layer of the plate.
- the adhesion strength with the support of the intaglio printing plate that is the adherend of the adhesive layer is preferably in the range of 0.015 N to 0.1 N / 25 mm. Since it is 0.015N / 25mm or more, ink is placed on the plate surface of the intaglio printing plate and scraped off with a metal doctor blade, or a ring-shaped ceramic or special metal edge that acts as a doctor blade It is possible to satisfactorily put ink in the attached ink cup and scrape the plate surface with the ink cup. That is, the deformation of the support can be suppressed when the ink is scraped off by the blade. Moreover, it is preferable that it is 0.1 N / 25mm or less from a viewpoint of re-sticking work (rework property).
- the adhesion layer was formed as a 2nd example.
- a method of preparing a film, applying an adhesive to the surface opposite to the surface on which the pressure-sensitive adhesive layer of the film is formed, and laminating the substrate with the adhesive, and a third example is a film Using a film with an adhesive layer on one side and an adhesive layer that can be bonded to the base material on the other side, and a method of attaching the film to the base material via the adhesive layer. Absent.
- the size of the plate is a size that can be attached to the platen of the printing press.
- Such a plate is used when a printed matter is produced by pad printing.
- the method for producing a printed matter by pad printing using such a plate preferably includes the following steps in that order.
- Step 1) A step of fixing a support of an intaglio printing plate to a plate via an adhesive layer of the plate to obtain a structure.
- Step 2) A step of mounting the structure on a pad printing machine.
- a structure in which the support of the intaglio printing plate is fixed (integrated) to the plate via the adhesive layer of the plate may be used. That is, the said structure is a structure which has the resin layer which has a recessed part, a support body, the adhesion layer, and a base material in that order. Such a structure can be used when producing printed matter by pad printing. It is preferable that the manufacturing method of the printed material by pad printing using this structure includes the process of mounting
- Polyamide (B) Polyamide having an aliphatic ring in the molecular main chain: Polyamide 1 (manufactured by Toray Industries, Inc.) having a number average molecular weight of 85,000 obtained by polycondensation of approximately the same amount of ⁇ -caprolactam, hexamethylenediammonium adipate and 4,4′-diaminodicyclohexylmethane adipate Using.
- Polyamide having a skeleton represented by the general formula (1) “Toresin” (registered trademark) MF-30 (Nagase ChemteX) having a number average molecular weight of 40,000, in which 30 mol% of the amide bond of 6-nylon is modified to the skeleton represented by the general formula (1) Used).
- Inorganic fine particles (A) The inorganic fine particle powder shown in Table 1 was used. Among these, the inorganic fine particles of Nos. 1 to 7 are amorphous silica. The average particle size was measured using LA-500 manufactured by Horiba, Ltd. using water as the dispersion medium and a refractive index of 1.1. The maximum particle size was set to 20.0 ⁇ m by passing through a 20.0 ⁇ m mesh screen. The specific surface area was measured by BET method based on the method described in JIS Z8830: 2013 using Tristar 3000 manufactured by Shimadzu Corporation.
- the sphericity was determined by measuring the shortest diameter and longest diameter of 50 particles from an image of inorganic fine particles taken with VE8800 manufactured by Keyence Corporation, calculating the shortest diameter / longest diameter, and calculating the arithmetic average of 50 particles.
- the pH of the extraction water of the inorganic fine particles (A) was measured with D-71LAB manufactured by Horiba, Ltd. after mixing 50 g of the inorganic fine particles with 500 g of distilled water and stirring for 30 minutes.
- Ethylene double bond-containing compound in Tables 2 and 3, described as “component (C)” Compound having an ethylenic double bond having one hydroxyl group, glycerol dimethacrylate (Light Ester G101P, manufactured by Kyoeisha Chemical Co., Ltd.) ⁇ 2-Hydroxypropyl methacrylate (Kyoeisha Chemical Co., Ltd.
- the coating liquid 1 for the adhesive layer (G1) is applied with a bar coater so that the film thickness becomes 10 ⁇ m after drying, After removing the solvent by heating in an oven at 180 ° C. for 3 minutes, the coating solution 2 for the adhesive layer (G1) is applied thereon with a bar coater so as to have a dry film thickness of 10 ⁇ m. By heating for 3 minutes, a support (E1) having an adhesive layer (G1) was obtained.
- the coating layer 1 for the adhesive layer (G2) is dried on the “Lumirror” (registered trademark) T60 (polyester film, manufactured by Toray Industries, Inc.) having a thickness of 250 ⁇ m, which is the support (E2), so that the film thickness becomes 10 ⁇ m.
- the coating liquid 2 for the adhesive layer (G2) is coated thereon with a bar coater so that the dry film thickness is 10 ⁇ m. And it heated for 3 minutes in 160 degreeC oven, and obtained the support body (E2) which has an contact bonding layer (G2).
- Evaluation in each example and comparative example was performed by the following method.
- the printing plate thus obtained is mounted on a hermetic 6-12 universal (manufactured by TAMPOPRINT), squeezed 50,000 times using PAD-PLV-1 ink white (manufactured by Navitas) as the ink, and the printing plate is worn.
- the depth was measured.
- the worn depth is 10 ⁇ m or more, the recess for filling the ink becomes shallow during printing, which causes a printing defect.
- the worn depth is preferably less than 10 ⁇ m, more preferably within 8 ⁇ m, and even more preferably 6 ⁇ m.
- the printing plate thus obtained is mounted on a hermetic 6-12 universal (manufactured by TAMPOPRINT), squeezed once using PAD-PLV-1 ink white (manufactured by Navitas), and remains on the surface of the printing plate.
- the thickness of the ink was measured at 10 points, and the average value was obtained.
- C defect
- B Acceptable
- Example 1 ⁇ Preparation of Composition Solution 1 for Photosensitive Resin Composition 1>
- Polyamide (B) shown in the column of Example 1 in Table 2 was added to a three-necked flask equipped with a stirring spatula and a condenser tube, and “Solmix” (registered trademark) H-11 (alcohol mixture, Japan) was added.
- Solmix registered trademark
- H-11 alcohol mixture, Japan
- a mixed solvent of 90 parts by mass of Alcohol Co., Ltd. and 10 parts by mass of water was mixed and then heated at 80 ° C. for 2 hours with stirring to dissolve the polyamide (B).
- the other component of the column of Example 1 of Table 2 was added, and it stirred for 30 minutes, and obtained the composition solution 1 for the photosensitive resin composition 1.
- Examples 2 to 17 A photosensitive resin sheet and a photosensitive resin printing plate precursor were prepared in the same manner as in Example 1 except that the composition of the photosensitive resin composition was changed as shown in Examples 2 to 17 in Tables 2 and 3. The evaluation results are shown in Tables 2 and 3.
- ⁇ Production method of metal plate> -Substrate Can Super (thick steel sheet manufactured by Nippon Steel & Sumikin Co., Ltd.) with a thickness of 300 ⁇ m -Film having adhesive layer: GPH25F01J02 / LS25A (manufactured by Panac Corporation): film having an adhesive layer formed on one side of the film and an adhesive layer formed on the other side GPH25F01J02 / LS25A was adhered to produce a metal plate having an adhesive layer on the substrate.
- the metal plate was cut to 70 ⁇ 140 mm.
- the support side of the polyester film of the photosensitive resin printing plate precursor 16 was pressure-bonded with a 3 kg roller to prepare the structure 1.
- the structure 1 composed of the metal plate and the photosensitive resin printing plate precursor 18 thus obtained was mounted on a platen of a hermetic 6-12 universal (manufactured by TAMPOPRINT), a pad printing machine, and attached to the printing machine. Then, the structure 1 was removed from the printing plate, the structure 2 was produced by the same method as the structure 1, and the time taken to mount the structure 2 on the printing plate was measured. Further, even when the ink was scraped off by the blade, no deformation of the support was observed.
- Example 19 A photosensitive resin printing plate precursor 18 was produced in the same manner as in Example 18, and this was used as a photosensitive resin printing plate precursor 18.
- a double-sided tape PGD-75 (manufactured by 3M) is affixed to the support side (front surface) of the polyester film of the obtained photosensitive resin printing plate precursor 18 to fix the intaglio printing plate on the plate base, and the hermetic 6- 12 universal (manufactured by TAMPOPRINT). After that, the intaglio printing plate is peeled off from the platen, and another intaglio printing plate (photosensitive resin printing plate precursor 18 prepared separately) is measured with a double-sided tape until it is mounted on the platen. As a result, it took 10 minutes.
- Comparative Examples 1 to 3 A photosensitive resin sheet and a photosensitive resin printing plate precursor were prepared in the same manner as in Example 1 except that the composition of the photosensitive resin composition was changed as shown in Comparative Examples 1 to 3 in Table 3. The evaluation results are shown in Table 3.
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Abstract
Description
第1の本発明の凹版印刷版原版またはパッド印刷版原版に用いられる樹脂組成物は、(A)成分として平均粒子径が0.5μm以上4μm以下であって、真球度が0.9以上である無機微粒子(以下、「無機微粒子(A)」という。)を含有する。このような無機微粒子(A)を用いることで、耐摩耗性に優れかつパッド印刷機のブレードでスキージした際の版表面のインクの掻き取り性に優れた凹版印刷版原版またはパッド印刷版原版に用いられる樹脂組成物を提供できる。
また、ポリアミド(B)として、炭素数8以上のメチレン鎖を有するポリアミドを、脂肪族環を分子主鎖に有するポリアミドおよび/または前記一般式(1)で表せる骨格を有するポリアミドに混合して使用することも可能である。
好ましく使用される(C)エチレン性二重結合含有化合物の具体的な例としては、次のようなものが挙げられるが、これに限定されるものではない。なお(C)エチレン性二重結合含有化合物は、分子内に水酸基を含むとよい。
なお、支持体がプラスチックフィルムである凹版印刷版は、金属を支持体とする凹版印刷版よりも軽量であり取り扱いが容易である。このような支持体がプラスチックフィルムである凹版印刷版をパッド印刷機に固定する方法としては、凹版印刷版の支持体に両面テープを貼り付け、両面テープの片側をパッド印刷機の版台に固定する方法があるが、支持体が金属、特に鉄板からなる凹版印刷版を磁石で版台に固定するのに比べて、支持体に強密着するため、凹版印刷版の装脱着に時間がかかり、貼り直し作業(交換作業)(リワーク性)の観点から使用しにくいことがある。
かかるプレートは、基材の少なくとも片側に粘着層を有するものであることが好ましい。粘着層は最外層に位置することが好ましい。
粘着層の厚みは、1~100μmであることが好ましく、5~75μmであることがより好ましい。1μm以上とすることにより被着体に対し十分な粘着力を確保でき、100μm以下とすることにより、粘着層の形成時の加工が容易となる。
かかるプレートを用いることにより、支持体がプラスチックフィルムである凹版印刷版が用いられても、交換しやすく(リワーク性に優れ)、加えて、ブレードによるインクの掻き取り時における、支持体の変形を抑制することができる。
工程1)凹版印刷版の支持体を、プレートの接着層を介して、プレートに固定化せしめ、構成体を得る工程。
工程2)当該構成体をパッド印刷機に装着する工程。
上記の方法を用いることにより、支持体がプラスチックフィルムである凹版印刷版が用いられても、交換しやすく(リワーク性に優れ)、加えて、ブレードによるインクの掻き取り時における、支持体の変形を抑制することができる。その結果、パッド印刷の印刷性を高めることができる。
すなわち、当該構成体とは、凹部を有する樹脂層、支持体、粘着層、および基材をその順に有する構成体である。
かかる構成体は、パッド印刷による印刷物の製造する際に用いることができる。かかる構成体を用いた、パッド印刷による印刷物の製造方法は、当該構成体をパッド印刷機に装着する工程を含むことが好ましい。
かかる構成体や方法を用いることにより、支持体がプラスチックフィルムである凹版印刷版が用いられても、交換しやすく(リワーク性に優れ)、加えて、ブレードによるインクの掻き取り時における、支持体の変形を抑制することができる。その結果、パッド印刷の印刷性を高めることができる。
なお、プレート、構成体、およびそれらを用いた方法に関しては、日本国特許出願の特願2017‐120049の明細書に記載の技術を適用することができる。
ポリアミド(B):
脂肪族環を分子主鎖に有するポリアミド:
ε‐カプロラクタム、ヘキサメチレンジアンモニウムアジピン酸塩および4,4’-ジアミノジシクロヘキシルメタンアジピン酸塩がほぼ同量重縮合された、数平均分子量が85,000であるポリアミド1(東レ株式会社製)を用いた。
6-ナイロンのアミド結合の30モル%が前記一般式(1)で表される骨格に変性された、数平均分子量が40,000である“トレジン”(登録商標) MF-30(ナガセケムテックス社製)を用いた。
炭素数8以上のメチレン鎖を有するポリアミド:
ナイロン6/66/610/12を共重合した“アミラン”(登録商標)CM8000(東レ株式会社製)を用いた。
表1に記載の無機微粒子の粉末を使用した。このうち番号1~7の無機微粒子は非晶質シリカである。平均粒子径の測定は株式会社堀場製作所製LA-500を用い、分散媒に水、屈折率を1.1に設定して測定した。最大粒子径は20.0μmメッシュの篩を通過させることにより、20.0μmに設定した。比表面積は株式会社島津製作所製Tristar3000を使用し、JIS Z8830:2013に記載された方法に基づき、BET法にて測定した。真球度は株式会社キーエンス製VE8800で撮影した無機微粒子の画像から50個の粒子の最短径および最長径を測定し、最短径/最長径を算出し、50個の相加平均を求めた。
水酸基を1個有するエチレン性二重結合を有する化合物
・グリセロールジメタクリレート(共栄社化学(株)製ライトエステルG101P)
・2-ヒドロキシプロピルメタクリレート(共栄社化学(株)製ライトエステルHOP)
水酸基を2個有するエチレン性二重結合を有する化合物
・グリセロールモノメタクリレート(日油(株)製ブレンマーGLM)
水酸基を有しないエチレン性二重結合を有する化合物
・イソブチルメタクリレート(共栄社化学(株)製ライトエステルIB)
・トリエチレングルコールジメタクリレート(共栄社化学(株)製ライトエステル3EG)
・2,2-ジメトキシ‐1,1-ジフェニルエタン‐1‐オン (BASF社製IRGACURE651)
・紫外線吸収剤:2,4-ジ-tert-ブチル-6-(5-クロロ-2H-1,2,3-ベンゾトリアゾール-2-イル)フェノール(BASF社製TINUVIN326)
“ビニトール”(登録商標)#284(名古屋油化株式会社製)66質量部およびヘキサメチレンテトラミン(関東化学株式会社製)2質量部をジメチルホルムアミド16質量部とキシレン16質量部の溶媒に混合した溶液に、ビスフェノールA“jER”(登録商標)834(三菱化学株式会社製)90質量部をジメチルホルムアミド30質量部とキシレン30質量部の溶媒に混合した溶液を添加し、接着層(G1)用塗工液1を得た。
“バイロン”(登録商標)31SS(不飽和ポリエステル樹脂のトルエン溶液、東洋紡績株式会社製)260質量部およびベンゾインエチルエーテル(和光純薬工業株式会社製)2質量部の混合物を70℃で2時間加熱後30℃に冷却し、エチレングリコールジグリシジルエーテルジメタクリレート7質量部を加えて2時間混合した。さらに、“コロネート”(商標登録)3015E(多価イソシアネート樹脂の酢酸エチル溶液、東ソー株式会社製)25質量部および“3MTM”(登録商標)EC-1368(工業用接着剤、住友スリーエム株式会社製)14質量部を添加し、接着層(G2)用塗工液1を得た。
厚さ100μmの“ルミラー”(登録商標)S10(ポリエステルフィルム、東レ株式会社製)をカバーフィルム(H)として使用した。
各実施例および比較例における評価は、次の方法で行った。
(1)耐摩耗性
7cm×14cmの感光性樹脂印刷版原版からカバーフィルム(H)のポリエステルフィルムのみを剥離し(剥離後の感光性樹脂印刷版原版の最表面は乾燥膜厚1μmの剥離補助層)、ポジフィルムを真空密着させ、ケミカル灯FL20SBL-360 20ワット(三菱電機オスラム(株)製)でグレースケール感度13±1段となる条件で露光し(主露光)、7cm×14cmの感光性樹脂層の全面を光硬化した。その後、液温25℃のエタノール水溶液(エタノール/水=80/20)でブラシ式現像装置により1分間現像し、60℃で10分間乾燥した後、さらにケミカル灯FL20SBL-360 20ワット(三菱電機オスラム(株)製)で主露光と同条件で後露光し、耐摩耗性評価用印刷版を得た。
7cm×14cmの感光性樹脂印刷版原版からカバーフィルム(H)を剥離し、ポジフィルムを真空密着させ、ケミカル灯FL20SBL-360 20ワット(三菱電機オスラム(株)製)でグレースケール感度13±1段となる条件で露光し(主露光)、7cm×14cmの感光性樹脂層の全面を光硬化した。その後、液温25℃のエタノール水溶液(エタノール/水=80/20)でブラシ式現像装置により1分間現像し、60℃で10分間乾燥した後、さらにケミカル灯FL20SBL-360 20ワット(三菱電機オスラム(株)製)で主露光と同条件で後露光し、インクの掻き取り性評価用印刷版を得た。
<感光性樹脂組成物1用の組成物溶液1の調製>
撹拌用ヘラおよび冷却管を取り付けた3つ口フラスコ中に、表2の実施例1の欄に示すポリアミド(B)を添加し、“ソルミックス”(登録商標)H-11(アルコール混合物、日本アルコール(株)製)90質量部および水10質量部の混合溶媒を混合した後、撹拌しながら80℃で2時間加熱し、ポリアミド(B)を溶解させた。40℃に冷却した後、表2の実施例1の欄のその他の成分を添加し、30分撹拌し、感光性樹脂組成物1用の組成物溶液1を得た。
得られた組成物溶液1を、前記接着層(G1)を有する支持体(E1)に流延し、60℃で2.5時間乾燥した。このとき乾燥後の版厚(鉄板+感光性樹脂層)が0.5mmとなるよう調節した。このようにして得られた感光性樹脂層(F)上に、水/エタノール=10/90(重量比)の混合溶剤を塗布し、表面にカバーフィルム(H)を圧着し、感光性樹脂印刷版原版1を得た。得られた感光性樹脂印刷版原版1を用いて、前記方法により印刷版の特性を評価した結果を表2に示す。
感光性樹脂組成物の組成を表2,3の実施例2~17のとおり変更した以外は実施例1と同様にして感光性樹脂シートおよび感光性樹脂印刷版原版を作製した。評価結果を表2,3に示す。
<感光性樹脂印刷版原版18の製造>
実施例1と同じ方法で組成物溶液1を調製した。得られた組成物溶液1を、前記接着層(G2)を有する支持体(E2)に流延し、60℃で2.5時間乾燥した。このとき乾燥後の版厚(鉄板+感光性樹脂層)が0.3mmとなるよう調節した。このようにして得られた感光性樹脂層(F)上に、水/エタノール=10/90(重量比)の混合溶剤を塗布し、表面にカバーフィルム(H)を圧着し、感光性樹脂印刷版原版18を得た。得られた感光性樹脂印刷版原版18を用いて、前記方法により印刷版の特性を評価した結果を表3に示す。なお、感光性樹脂印刷版原版18は以下の方法で作製した金属プレートに下記記載の方法で密着させ、パッド印刷機に装着し、評価した。
・基材:厚み300μmのキャンスーパー(新日鐵住金株式会社製の鋼板)
・粘着層を有するフィルム:GPH25F01J02/LS25A(パナック株式会社製):フィルム上の片面に粘着層、もう一方の面に接着層が形成されたフィルム
GPH25F01J02/LS25Aの接着層を介して、基材とGPH25F01J02/LS25Aを接着せしめ、基材上に粘着層を有する金属プレートを作製した。
金属プレートを70×140mmに断裁した。断裁された金属プレートの粘着層上に、感光性樹脂印刷版原版16のポリエステルフィルムの支持体側を3kgローラーで圧着し、構成体1を作製した。
こうして得られた金属プレートと感光性樹脂印刷版原版18からなる構成体1を、パッド印刷機のhermetic6-12 universal(TAMPOPRINT社製)の版台に装着し、印刷機に取り付けた。その後、版台から構成体1を取り外して、構成体1と同じ方法で構成体2を作製し、当該構成体2を版台に装着するまでの時間を計測したところ1分であった。
また、ブレードによってインクを掻き取っても、支持体の変形は認められなかった。
実施例18と同じ方法で感光性樹脂印刷版原版18を製造し、これを感光性樹脂印刷版原版18とした。得られた感光性樹脂印刷版原版18のポリエステルフィルムの支持体側(表面)に、両面テープPGD-75(3M製)を貼り付け、版台に凹版印刷版を固定し、パッド印刷機のhermetic6-12 universal(TAMPOPRINT社製)に装着した。その後、版台から凹版印刷版を剥がして、別の凹版印刷版(別に準備しておいた感光性樹脂印刷版原版18)を、両面テープを用いて、版台に装着するまでの時間を計測したところ10分であり時間を要した。
感光性樹脂組成物の組成を表3の比較例1~3のとおり変更した以外は実施例1と同様にして感光性樹脂シートおよび感光性樹脂印刷版原版を作製した。評価結果を表3に示す。
Claims (22)
- (A)平均粒子径が0.5μm以上4μm以下であって、真球度が0.9以上である無機微粒子を含有することを特徴とする凹版印刷版原版またはパッド印刷版原版に用いられる樹脂組成物。
- (B)ポリアミドを含有し、該(B)ポリアミドが、炭素数8以上のメチレン鎖を有するポリアミドを含む請求項2または3に記載の樹脂組成物。
- (C)エチレン性二重結合を有する化合物を含有する請求項2~4のいずれかに記載の樹脂組成物。
- (D)光重合開始剤を含有する請求項2~5のいずれかに記載の樹脂組成物。
- (A)平均粒子径が0.5μm以上4μm以下であって、真球度が0.9以上である無機微粒子、(B)炭素数8以上のメチレン鎖を有するポリアミド、(C)エチレン性二重結合を有する化合物、および(D)光重合開始剤を含有することを特徴とする感光性樹脂組成物。
- 前記(B)ポリアミドが、炭素数8以上のメチレン鎖を有するポリアミドを含む請求項1に記載の感光性樹脂組成物。
- 前記(C)エチレン性二重結合を有する化合物が分子内に水酸基を含む請求項1、7または8のいずれかに記載の感光性樹脂組成物。
- 前記(B)のポリアミドが4,4’-ジアミノジシクロヘキシルメタンアジペート骨格残基を有する請求項1,7~9のいずれかに記載の感光性樹脂組成物。
- 前記(A)の無機微粒子の比表面積が10m2/g以下である請求項1,7~10のいずれかに記載の感光性樹脂組成物。
- 前記(A)に含まれる無機微粒子の最大粒子径が20μm以下である請求項1,7~11のいずれかに記載の感光性樹脂組成物。
- 前記(A)の無機微粒子が非晶質シリカおよび/またはアルミナである請求項1,7~12のいずれかに記載の感光性樹脂組成物。
- 前記(A)の無機微粒子の抽出水のpHが5.5~8.5である請求項1,7~13のいずれかに記載の感光性樹脂組成物。
- 少なくとも支持体上に、接着層、請求項1,7~14のいずれかに記載の感光性樹脂組成物からなる感光性樹脂層、保護層が順次積層されてなることを特徴とする凹版印刷またはパッド印刷に用いられる感光性樹脂印刷版原版。
- 前記(C)エチレン性二重結合を有する化合物が分子内に水酸基を含む請求項2~6のいずれかに記載の樹脂組成物。
- 前記(B)のポリアミドが4,4’-ジアミノジシクロヘキシルメタンアジペート骨格残基を有する請求項2~6,16のいずれかに記載の樹脂組成物。
- 前記(A)の無機微粒子の比表面積が10m2/g以下である請求項2~6,16~17のいずれかに記載の樹脂組成物。
- 前記(A)に含まれる無機微粒子の最大粒子径が20μm以下である請求項2~6,16~18のいずれかに記載の樹脂組成物。
- 前記(A)の無機微粒子が非晶質シリカおよび/またはアルミナである請求項2~6,16~19のいずれかに記載の樹脂組成物。
- 前記(A)の無機微粒子の抽出水のpHが5.5~8.5であることを特徴とする請求項2~6,16~20のいずれかに記載の樹脂組成物。
- 少なくとも支持体上に、接着層、請求項2~6,16~21のいずれかに記載の樹脂組成物からなる樹脂層、保護層が順次積層されてなることを特徴とする凹版印刷またはパッド印刷に用いられる樹脂印刷版原版。
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EP17887486.3A EP3561595B1 (en) | 2016-12-26 | 2017-12-20 | Photosensitive resin composition for a photosensitive resin printing plate precursor |
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US11137683B2 (en) | 2021-10-05 |
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KR20190099190A (ko) | 2019-08-26 |
CN109791353B (zh) | 2022-07-12 |
TW201835223A (zh) | 2018-10-01 |
JPWO2018123773A1 (ja) | 2019-10-31 |
CN109791353A (zh) | 2019-05-21 |
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