JPH04299143A - Offset master sheet - Google Patents
Offset master sheetInfo
- Publication number
- JPH04299143A JPH04299143A JP6452391A JP6452391A JPH04299143A JP H04299143 A JPH04299143 A JP H04299143A JP 6452391 A JP6452391 A JP 6452391A JP 6452391 A JP6452391 A JP 6452391A JP H04299143 A JPH04299143 A JP H04299143A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- meth
- master sheet
- electron beam
- offset master
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000178 monomer Substances 0.000 claims abstract description 24
- 238000010894 electron beam technology Methods 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 30
- 238000000576 coating method Methods 0.000 abstract description 22
- 239000011248 coating agent Substances 0.000 abstract description 21
- 239000002131 composite material Substances 0.000 abstract 1
- -1 silver halide Chemical class 0.000 description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 11
- 239000002904 solvent Substances 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 9
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 9
- 239000008199 coating composition Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000002202 Polyethylene glycol Substances 0.000 description 8
- 229920001223 polyethylene glycol Polymers 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000007639 printing Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000003999 initiator Substances 0.000 description 5
- 230000005865 ionizing radiation Effects 0.000 description 5
- 229920000570 polyether Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 4
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 125000004386 diacrylate group Chemical group 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007645 offset printing Methods 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 244000028419 Styrax benzoin Species 0.000 description 2
- 235000000126 Styrax benzoin Nutrition 0.000 description 2
- 235000008411 Sumatra benzointree Nutrition 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000003863 ammonium salts Chemical group 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229960002130 benzoin Drugs 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 125000005442 diisocyanate group Chemical group 0.000 description 2
- 238000010017 direct printing Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 235000019382 gum benzoic Nutrition 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
- 150000002763 monocarboxylic acids Chemical class 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- JNELGWHKGNBSMD-UHFFFAOYSA-N xanthone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3OC2=C1 JNELGWHKGNBSMD-UHFFFAOYSA-N 0.000 description 2
- LSUMRGHRDAUBMF-UHFFFAOYSA-N 1,2-dimethylxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=C(C)C(C)=CC=C3OC2=C1 LSUMRGHRDAUBMF-UHFFFAOYSA-N 0.000 description 1
- BOCJQSFSGAZAPQ-UHFFFAOYSA-N 1-chloroanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2Cl BOCJQSFSGAZAPQ-UHFFFAOYSA-N 0.000 description 1
- HSKPJQYAHCKJQC-UHFFFAOYSA-N 1-ethylanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2CC HSKPJQYAHCKJQC-UHFFFAOYSA-N 0.000 description 1
- CERJZAHSUZVMCH-UHFFFAOYSA-N 2,2-dichloro-1-phenylethanone Chemical compound ClC(Cl)C(=O)C1=CC=CC=C1 CERJZAHSUZVMCH-UHFFFAOYSA-N 0.000 description 1
- PIZHFBODNLEQBL-UHFFFAOYSA-N 2,2-diethoxy-1-phenylethanone Chemical compound CCOC(OCC)C(=O)C1=CC=CC=C1 PIZHFBODNLEQBL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- DVVXXHVHGGWWPE-UHFFFAOYSA-N 2-(dimethylamino)benzoic acid Chemical compound CN(C)C1=CC=CC=C1C(O)=O DVVXXHVHGGWWPE-UHFFFAOYSA-N 0.000 description 1
- HRGCERQFEGGWFF-UHFFFAOYSA-N 2-(dioctylamino)benzoic acid Chemical compound CCCCCCCCN(CCCCCCCC)C1=CC=CC=C1C(O)=O HRGCERQFEGGWFF-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- ARXVXVOLXMVYIT-UHFFFAOYSA-N 3-methylbutyl 2-(dimethylamino)benzoate Chemical compound CC(C)CCOC(=O)C1=CC=CC=C1N(C)C ARXVXVOLXMVYIT-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 229940105990 diglycerin Drugs 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- GUUVPOWQJOLRAS-UHFFFAOYSA-N diphenyl disulphide Natural products C=1C=CC=CC=1SSC1=CC=CC=C1 GUUVPOWQJOLRAS-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- JPJNCYZKRJFVAK-UHFFFAOYSA-N dodecyl 2-(dimethylamino)benzoate Chemical compound CCCCCCCCCCCCOC(=O)C1=CC=CC=C1N(C)C JPJNCYZKRJFVAK-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- GHJOIQFPDMIKHT-UHFFFAOYSA-N propane-1,2,3-triol;prop-2-enoic acid Chemical compound OC(=O)C=C.OCC(O)CO GHJOIQFPDMIKHT-UHFFFAOYSA-N 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は印刷版、特に平版（オフ
セット）印刷版として適したオフセットマスター用シー
トに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing plate, particularly an offset master sheet suitable as a lithographic (offset) printing plate.
【０００２】0002
【従来の技術】オフセット印刷版は、平面のままで画線
部と非画線部の物理的性質を変えているものであり、画
線部は親油性でインキになじみやすく、非画線部は親水
性で水になじみやすいもので、オフセット印刷機に使用
することができる。このオフセット印刷版は、電子写真
方式や銀塩方式、直描式等のダイレクト版とＰＳ版に分
けることができる。このなかで直描式のダイレクト版は
、親水性の表面層上にドットプリンター、熱転写プリン
ター、タイプライター等で印字したり、手書きしたり、
ＰＰＣ法でトナー製版し、親油性の画像を作成してその
まま版として使用することができるため、簡便な印刷版
としてその需要が増えてきている。[Prior Art] Offset printing plates are flat, but have different physical properties between printed and non-printed areas; the printed areas are oleophilic and easily absorb ink; is hydrophilic and easily compatible with water, so it can be used in offset printing machines. This offset printing plate can be divided into direct plates such as electrophotographic type, silver halide type, and direct printing type, and PS plates. Among these, the direct printing type prints on a hydrophilic surface layer using a dot printer, thermal transfer printer, typewriter, etc., or by handwriting.
Since a toner plate can be made using the PPC method to create a lipophilic image and used as a plate as it is, the demand for it as a simple printing plate is increasing.
【０００３】支持体に親水性を付与する方法としては、
（１） 界面活性剤の塗布、（２） 親水性樹脂のコー
ティング等が挙げられる。（１） は、その効果は一時
的であり水により界面活性剤は容易に流失してしまい、
繰り返し印刷することができない。（２） についても
耐水性が不十分であり、耐刷力に劣るのが現状である。[0003] As a method for imparting hydrophilicity to a support,
Examples include (1) coating with a surfactant, (2) coating with a hydrophilic resin, and the like. (1) The effect is temporary and the surfactant is easily washed away by water.
Unable to print repeatedly. (2) also has insufficient water resistance and is currently inferior in printing durability.
【０００４】0004
【発明が解決しようとする課題】本発明は、親水性及び
吸水性（保水性）に優れ、耐久性（耐刷力）に優れたオ
フセットマスター用シートを提供するものである。SUMMARY OF THE INVENTION The present invention provides an offset master sheet that is excellent in hydrophilicity, water absorption (water retention), and durability (printing durability).
【０００５】[0005]
【課題を解決するための手段】本発明は、電子線或いは
紫外線硬化型の親水性モノマー及び／又はオリゴマー（
プレポリマー）を主成分とする組成物が支持体上に塗工
され、該塗工層が電子線或いは紫外線により硬化せしめ
られていることを特徴とするオフセットマスター用シー
トである。[Means for Solving the Problems] The present invention provides electron beam or ultraviolet ray curing hydrophilic monomers and/or oligomers (
This is an offset master sheet characterized in that a composition containing a prepolymer as a main component is coated on a support, and the coated layer is cured by electron beams or ultraviolet rays.
【０００６】[0006]
【作用】本発明で用いる支持体は特に限定されないが、
耐水性、寸法安定性、耐久性に優れたものが好ましく、
例えばポリエチレン、エチレン−酢酸ビニル共重合体、
ポリプロピレン、ポリ塩化ビニル、ポリエステル、ポリ
サルフォン、セルロースエステル、ポリアミド、ポリイ
ミド等のプラスチックフィルム類、或いは紙類、金属箔
類等、或いはこれらの積層体が挙げられる。[Function] The support used in the present invention is not particularly limited, but
It is preferable to have excellent water resistance, dimensional stability, and durability.
For example, polyethylene, ethylene-vinyl acetate copolymer,
Examples include plastic films such as polypropylene, polyvinyl chloride, polyester, polysulfone, cellulose ester, polyamide, and polyimide, paper, metal foils, and laminates thereof.
【０００７】本発明で使用される電子線或いは紫外線硬
化型の親水性のモノマー及び親水性のオリゴマー（プレ
ポリマー）は特に限定するものではないが、具体的には
下記の様なものが挙げられる。[0007] The electron beam or ultraviolet ray curable hydrophilic monomers and hydrophilic oligomers (prepolymers) used in the present invention are not particularly limited, but specifically include the following. .
【０００８】（ａ）単官能のモノマーあるいはオリゴマ
ー（プレポリマー）；
〔イ〕（メタ）アクリル酸や、ＣＨ２＝ＣＲ・ＣＯＯ
・（ＣＨ２・ＣＨＲ ・ＣＯＯ）ｎ ・Ｈ （１≦ｎ≦
２０， Ｒ は水素原子又はメチル基を示す）で表され
る（メタ）アクリル酸ダイマー、トリマー等のエチレン
性不飽和モノカルボン酸、又はエチレン性不飽和モノカ
ルボン酸等で代表されるカルボキシル基を含有する単官
能モノマー、及びこれらのアルカリ金属塩、アンモノウ
ム塩、アミン塩等のカルボン酸塩基を含有する単官能モ
ノマー。
〔ロ〕エチレン性不飽和（メタ）アクリルアミドまたは
アルキル置換（メタ）アクリルアミド、Ｎ−ビニルピロ
リドン等で代表されるアミド基含有モノマー。
〔ハ〕脂肪族又は芳香族ビニルスルホン酸類で代表され
るスルホン酸基含有単官能モノマー、及びこれらのアル
カリ金属塩、アンモノウム塩、アミン塩等のスルホン酸
塩基を含有する単官能モノマー。
〔ニ〕２−ヒドロキシエチル（メタ）アクリレート、グ
リセリンアクリレート等のＯＨ基含有単官能モノマー。
〔ホ〕グリシジル（メタ）アクリレート等のエポキシ基
含有単官能モノマー。
〔ヘ〕４級アンモニウム塩基含有単官能モノマー。
〔ト〕親水性セグメント、例えばポリＮ−メチロールア
クリルアミド、ポリ２−ヒドロキシエチルメタクリレー
ト、ポリエチレングリコール等の片末端に（メタ）アク
リロイル基を持つ親水性マクロモノマー。(a) Monofunctional monomer or oligomer (prepolymer); [b] (meth)acrylic acid or CH2=CR/COO
・(CH2・CHR ・COO)n ・H (1≦n≦
20, R represents a hydrogen atom or a methyl group), ethylenically unsaturated monocarboxylic acids such as (meth)acrylic acid dimers and trimers, or carboxyl groups represented by ethylenically unsaturated monocarboxylic acids, etc. and monofunctional monomers containing carboxylic acid groups such as alkali metal salts, ammonium salts, and amine salts thereof. [B] An amide group-containing monomer represented by ethylenically unsaturated (meth)acrylamide, alkyl-substituted (meth)acrylamide, N-vinylpyrrolidone, etc. [C] Monofunctional monomers containing sulfonic acid groups represented by aliphatic or aromatic vinyl sulfonic acids, and monofunctional monomers containing sulfonic acid groups such as alkali metal salts, ammonium salts, and amine salts thereof. [d] OH group-containing monofunctional monomers such as 2-hydroxyethyl (meth)acrylate and glycerin acrylate. [e] Epoxy group-containing monofunctional monomers such as glycidyl (meth)acrylate. [f] Quaternary ammonium base-containing monofunctional monomer. [g] A hydrophilic macromonomer having a (meth)acryloyl group at one end, such as a hydrophilic segment, such as poly N-methylol acrylamide, poly 2-hydroxyethyl methacrylate, or polyethylene glycol.
【０００９】（ｂ）多官能のモノマーあるいはオリゴマ
ー（プレポリマー）；
〔イ〕エチレングリコールジ（メタ）アクリレート、ジ
エチレングリコールジ（メタ）アクリレート、またポリ
エチレングリコールジ（メタ）アクリレート、プロピレ
ングリコールジ（メタ）アクリレート、ポリプロピレン
グリコールジ（メタ）アクリレート等のポリエーテルを
骨格として両端に（メタ）アクリロイル基が導入された
もの。さらに、ポリエーテルを骨格として両端にジイソ
シアネートを介在させて水酸基を内含する（メタ）アク
リレートを結合させたポリエーテルウレタン（メタ）ア
クリレート。なお上記ポリエーテルは、−（Ｍ−Ｏ）−
の繰り返し単位を有するポリマーであり、Ｍはメチレン
基、エチレン基、ポリメチレン基、及びそれらの誘導体
のいずれかであり、単一のもであっても良いし２種類以
上が含まれていても良い。
〔ロ〕Ｎ，Ｎ’−メチレンビス（メタ）アクリルアミド
。
〔ハ〕アクリルアミドもしくはアクリルアミド誘導体と
、グリオキザール等の（ジ）アルデヒド類とを触媒の存
在下で反応させることによって側鎖に放射線反応性の官
能基として少なくとも〔化１〕（Ｒは水素原子又はメチ
ル基を示す）を複数個導入した天然又は合成の水溶性高
分子化合物。(b) Polyfunctional monomer or oligomer (prepolymer); [a] Ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate A polyether skeleton such as acrylate or polypropylene glycol di(meth)acrylate with (meth)acryloyl groups introduced at both ends. Furthermore, polyether urethane (meth)acrylate is a polyether urethane (meth)acrylate in which a (meth)acrylate containing a hydroxyl group is bonded to a polyether skeleton with diisocyanate interposed at both ends. Note that the above polyether is -(M-O)-
A polymer having repeating units, M is a methylene group, an ethylene group, a polymethylene group, or any of their derivatives, and may be a single type or may contain two or more types. . [B] N,N'-methylenebis(meth)acrylamide. [C] At least [Chemical formula 1] (R is a hydrogen atom or methyl A natural or synthetic water-soluble polymer compound into which a plurality of groups) have been introduced.
【００１０】0010
【化１】[Chemical formula 1]
【００１１】なお天然の高分子化合物としては、カゼイ
ン、ゼラチン、澱粉系多糖類（デキストリン、可溶性澱
粉、α化澱粉、ブリラン等）とその誘導体及びセルロー
ス誘導体（ニトロセルロース、カルボキシメチルセルロ
ース、メチルセルロース、ヒドロキシプロピルメチルセ
ルロース、エチルセルロース、ヒドロキシエチルセルロ
ース、ヒドロキシプロピルセルロース等）がある。また
、合成高分子化合物としては、完全鹸化ないし部分鹸化
のポリビニルアルコール等が挙げられる。
〔ニ〕（メタ）アクリロイル基、ハロ（メタ）アクリロ
イル基、Ｎ−メチロールアクリルアミドから選ばれる少
なくとも一種の官能基を複数個有するポリビニルアルコ
ール等。Natural polymer compounds include casein, gelatin, starch polysaccharides (dextrin, soluble starch, pregelatinized starch, Brilan, etc.) and their derivatives, and cellulose derivatives (nitrocellulose, carboxymethylcellulose, methylcellulose, hydroxypropyl). methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, etc.). Examples of the synthetic polymer compound include completely saponified or partially saponified polyvinyl alcohol. [d] Polyvinyl alcohol, etc. having a plurality of at least one functional group selected from (meth)acryloyl group, halo(meth)acryloyl group, and N-methylolacrylamide.
【００１２】これらのモノマー或いはオリゴマー（プレ
ポリマー）は単独でも使用できるし適宜混合して使用し
ても良いが、硬化密度が高くなりすぎると吸水性が低下
し、硬化密度が低すぎると塗膜強度が低下し且つ耐水性
も低下してくるため、官能基の数や分子量等を考慮して
選択することが必要であるが、一般に単官能モノマーと
多官能モノマー或いは／およびオリゴマー（プレポリマ
ー）を組み合わせて使用すると良好な結果が得られやす
い。[0012] These monomers or oligomers (prepolymers) can be used alone or in an appropriate mixture; however, if the cured density becomes too high, water absorption will decrease, and if the cured density is too low, the coating film will deteriorate. Since the strength and water resistance decrease, it is necessary to consider the number of functional groups, molecular weight, etc. when selecting a monofunctional monomer, a polyfunctional monomer, and/or an oligomer (prepolymer). Good results are likely to be obtained when used in combination.
【００１３】また、多官能のモノマー及びオリゴマー（
プレポリマー）の中でも、両末端に重合性二重結合、特
に（メタ）アクリロイル基を有するポリオキシエチレン
化合物をその一部或いは全部として使用すると、特に吸
水性、塗膜強度に優れたものが得られるため好ましい。
該ポリオキシエチレン化合物は；
Ｒ１−Ｏ−（− ＣＨ２−ＣＨ２−Ｏ−）ｎ − Ｒ１
で表され、Ｒ１ は例えば（メタ）アクリロイル基、或
いはジイソシアネートを介して水酸基含有（メタ）アク
リル酸エステルを結合させた構造を持つ置換基等の重合
性二重結合を有する置換基である。ここでｎは５〜１０
０、好ましくは１０〜８０の範囲が適当である。In addition, polyfunctional monomers and oligomers (
Among prepolymers, if a polyoxyethylene compound having a polymerizable double bond, especially a (meth)acryloyl group, at both ends is used as part or all of it, a product with particularly excellent water absorption and coating strength can be obtained. It is preferable because The polyoxyethylene compound is; R1-O-(-CH2-CH2-O-)n-R1
R1 is a substituent having a polymerizable double bond, such as a (meth)acryloyl group or a substituent having a structure in which a hydroxyl group-containing (meth)acrylic acid ester is bonded via a diisocyanate. Here n is 5 to 10
0, preferably in the range of 10 to 80.
【００１４】これらのモノマー及び／又はオリゴマー（
プレポリマー）は、そのままでも使用できるが、親水性
の溶媒に溶解または分散させて塗布組成物とすることも
できる。親水性の溶媒としては水、メチルアルコール、
エチルアルコール、プロピルアルコール、メチルセロソ
ルブ、エチルセロソルブ等が例示されるが、安全性や管
理のし易さという点では水を使用するのが好ましい。These monomers and/or oligomers (
The prepolymer) can be used as it is, but it can also be dissolved or dispersed in a hydrophilic solvent to form a coating composition. Hydrophilic solvents include water, methyl alcohol,
Examples include ethyl alcohol, propyl alcohol, methyl cellosolve, and ethyl cellosolve, but water is preferably used in terms of safety and ease of management.
【００１５】この際、電離放射線を照射する前に乾燥す
ることもできるが、溶媒をある程度含有したまま照射す
ると、より良好な親水性と耐水性が得られる。この際塗
液の固形分濃度は１０〜９５重量％好ましくは３０〜８
０重量％が適当である。なお、これらのモノマー及び／
又はオリゴマー（プレポリマー）は親水性の溶媒に分散
させるより溶解させた方が、一般に透明で強固な塗膜が
得られやすいので好ましい。塗工層が親水性の溶媒を含
有した状態で電離放射線を照射する場合、照射の際親水
性の溶媒は一部又は全部が蒸発することになるが、電離
放射線を照射後になお塗膜がべたつくようであればさら
に乾燥工程を設けて乾燥させることが好ましい。[0015] At this time, it is possible to dry the material before irradiating it with ionizing radiation, but better hydrophilicity and water resistance can be obtained if the material is irradiated while still containing a certain amount of solvent. At this time, the solid content concentration of the coating liquid is 10 to 95% by weight, preferably 30 to 8%.
0% by weight is suitable. In addition, these monomers and/or
Alternatively, it is preferable to dissolve the oligomer (prepolymer) in a hydrophilic solvent rather than to disperse it, since it is generally easier to obtain a transparent and strong coating film. If the coating layer contains a hydrophilic solvent and is irradiated with ionizing radiation, some or all of the hydrophilic solvent will evaporate during the irradiation, but the coating will still remain sticky after irradiation with the ionizing radiation. If so, it is preferable to further perform a drying step.
【００１６】本発明による方法で得られたオフセットマ
スター用シートは、以下のような理由で吸水性に優れ且
つ耐水性を有し、オフセットマスター用シートとして好
適なものが得られるものと想定される。即ち、親水性の
モノマー及び／又はオリゴマー（プレポリマー）は、電
離放射線の照射により重合及び架橋反応を起こし、適度
な架橋密度を有する親水性の網目構造を持つ塗工層が形
成され、吸水能を持つようになるものと推定さる。また
この際、親水性の溶媒が存在すると架橋密度が高くなる
のが程よく抑制され、さらに親水性の溶媒は電離放射線
の照射によりその一部または全部が瞬時に蒸発し、この
際塗工層中に均一な微孔が形成されるため吸水能がさら
に向上するものと考えられる。なお、この塗膜は架橋構
造を有しているので耐水性・耐溶剤性にも優れているの
である。It is assumed that the offset master sheet obtained by the method of the present invention has excellent water absorption and water resistance for the following reasons, and is suitable as an offset master sheet. . That is, hydrophilic monomers and/or oligomers (prepolymers) undergo polymerization and crosslinking reactions when irradiated with ionizing radiation, forming a coating layer with a hydrophilic network structure having an appropriate crosslink density, and increasing water absorption capacity. It is presumed that it will have . At this time, the presence of a hydrophilic solvent moderately suppresses the increase in crosslinking density, and furthermore, part or all of the hydrophilic solvent is instantly evaporated by irradiation with ionizing radiation, and at this time, the hydrophilic solvent is It is thought that the water absorption capacity is further improved because uniform micropores are formed in the pores. Furthermore, since this coating film has a crosslinked structure, it also has excellent water resistance and solvent resistance.
【００１７】上記組成物は親水性のモノマー及び／又は
オリゴマープレポリマー）を使用するため、表面の濡れ
性にも優れており、印刷の際、湿し水が供給される時の
瞬間的な吸収に優れているが、さらに濡れ性を向上させ
るために界面活性剤を添加することももちろん可能であ
る。さらに、上記組成物には必要に応じて、例えば分散
剤、染料、顔料、湿潤剤、レベリング剤、消泡剤等の各
種添加剤また前述した以外の電子線或いは紫外線硬化型
のモノマー及び／又はオリゴマー（プレポリマー）や電
子線或いは紫外線硬化型でない樹脂を本発明の効果を阻
害しない範囲で添加することもできる。[0017] Since the above composition uses a hydrophilic monomer and/or oligomer prepolymer, it has excellent surface wettability, and when dampening water is supplied during printing, instantaneous absorption is achieved. However, it is of course possible to add a surfactant to further improve wettability. Furthermore, the above composition may contain various additives such as dispersants, dyes, pigments, wetting agents, leveling agents, and antifoaming agents, as well as electron beam or ultraviolet curable monomers and/or Oligomers (prepolymers) and resins that are not curable by electron beams or ultraviolet rays may also be added to the extent that they do not impede the effects of the present invention.
【００１８】本発明の塗布組成物は支持体上に塗布され
るが、この場合の塗布手段は、一般公知の、例えばバー
コーター、ロールコーター、エヤーナイフコーター、グ
ラビヤコーター、オフセットグラビヤコーター等の塗工
機が用いられる。上記塗布組成物の塗布量は固形量で０
．１〜５０ｇ／ｍ２ 、より好ましくは０．２〜２０ｇ
／ｍ２ の範囲である。因みに、０．１ｇ／ｍ２ 未満
では本発明の目的とする効果を得ることが難しく、５０
ｇ／ｍ２ を越えるとその効果が飽和状態となり無意味
である。なお、支持体の塗布面は予め必要に応じてアン
カーコート処理、コロナ放電処理、放射線処理、プラズ
マ処理等によって前処理し、塗布面の濡れ易さを改良し
たり、塗工層の密着性を改良することができる。The coating composition of the present invention is coated onto a support, and the coating means in this case may be a generally known coating method such as a bar coater, roll coater, air knife coater, gravure coater, offset gravure coater, etc. Machinery is used. The coating amount of the above coating composition is 0 in terms of solid amount.
．． 1-50g/m2, more preferably 0.2-20g
/m2 range. Incidentally, if it is less than 0.1 g/m2, it is difficult to obtain the desired effect of the present invention;
If it exceeds g/m2, the effect becomes saturated and is meaningless. The coated surface of the support may be pretreated as necessary by anchor coating treatment, corona discharge treatment, radiation treatment, plasma treatment, etc. to improve the wettability of the coated surface and to improve the adhesion of the coated layer. It can be improved.
【００１９】本発明の方法では上述のようにして形成さ
れた塗布組成物の塗工層を電子線或いは紫外線により硬
化させるが、電子線を使用する場合、照射する電子線の
量は０．１〜２０Ｍｒａｄ程度の範囲で調節するのが望
ましい。０．１Ｍｒａｄ未満では十分な照射効果が得ら
れず、２０Ｍｒａｄを越えるような照射は、支持体の材
質によっては劣化さする恐れがあるため好ましくない。In the method of the present invention, the coating layer of the coating composition formed as described above is cured by electron beam or ultraviolet rays. When electron beam is used, the amount of electron beam irradiated is 0.1 It is desirable to adjust within a range of about 20 Mrad. If the irradiation is less than 0.1 Mrad, a sufficient irradiation effect cannot be obtained, and if the irradiation exceeds 20 Mrad, it may deteriorate depending on the material of the support, which is not preferable.
【００２０】電子線の照射方法としては、例えばスキャ
ニング方式、カーテンビーム方式、ブロードビーム方式
等が採用され、電子線を照射する際の加速電圧は１００
〜３００ＫＶ程度が適当である。尚、電子線照射方式は
、紫外線照射に比べて生産性が高く、開始剤添加による
臭気、着色の問題がなく、さらに均一な架橋構造をとり
やすいといった利点がある。As the electron beam irradiation method, for example, a scanning method, a curtain beam method, a broad beam method, etc. are adopted, and the acceleration voltage when irradiating the electron beam is 100
~300KV is appropriate. The electron beam irradiation method has the advantages of higher productivity than ultraviolet irradiation, no problems with odor or coloration due to the addition of an initiator, and the ability to easily form a uniform crosslinked structure.
【００２１】紫外線を使用する場合には、塗布組成物中
に開始剤を配合する必要があり、例えばチオキサントン
、ベンゾイン、ベンゾインアルキルエーテルキサントン
、ジメチルキサントン、ベンゾフェノン、アントラセン
、ベンジル、２，２−ジエトキシアセトフェノン、ベン
ジルジメチルケタール、ベンジルジフェニルジスルフィ
ド、アントラキノン、１−クロロアントラキノン、２−
エチルアントラキノン、２−ｔｅｒ −ブチルアントラ
キノン、Ｎ，Ｎ′−テトラエチル−４，４′−ジアミノ
ベンゾフェノン、１，１−ジクロロアセトフェノン等の
開始剤の一種以上が適宜配合される。When using ultraviolet light, it is necessary to incorporate an initiator into the coating composition, such as thioxanthone, benzoin, benzoin alkyl ether xanthone, dimethylxanthone, benzophenone, anthracene, benzyl, 2,2-diethoxy Acetophenone, benzyl dimethyl ketal, benzyl diphenyl disulfide, anthraquinone, 1-chloroanthraquinone, 2-
One or more types of initiators such as ethyl anthraquinone, 2-ter-butylanthraquinone, N,N'-tetraethyl-4,4'-diaminobenzophenone, and 1,1-dichloroacetophenone are suitably blended.
【００２２】尚、開始剤の使用量は塗布組成物中の紫外
線硬化型モノマー／オリゴマー（プレポリマー）に対し
て０．２〜１０重量％、好ましくは０．５〜５重量％程
度の範囲で調節するのが望ましい。さらに、このような
開始剤に加えて硬化を促進するために、例えばトリエタ
ノールアミン、２−ジメチルアミノエタノール、ジメチ
ルアミノ安息香酸、ジメチルアミノ安息香酸イソアミル
、ジオクチルアミノ安息香酸、ジメチルアミノ安息香酸
ラウリル等の第三級アミン類を塗布組成物中の紫外線硬
化型モノマー／オリゴマー（プレポリマー）に対して０
．０５〜３重量％程度配合することもできる。紫外線照
射用の光源としては、１〜５０個の紫外線ランプ（例え
ば数ｍｍＨｇから約１０気圧までの動作圧力を有する低
圧、中圧、高圧水銀ランプ）、キセノンランプ、タング
ステンランプ等が用いられ、５０００〜８０００μＷ／
ｃｍ２ 程度の強度を有する紫外線が好ましく照射され
る。[0022] The amount of the initiator used is in the range of 0.2 to 10% by weight, preferably 0.5 to 5% by weight based on the ultraviolet curable monomer/oligomer (prepolymer) in the coating composition. It is desirable to adjust. Furthermore, in addition to such initiators, to accelerate curing, for example triethanolamine, 2-dimethylaminoethanol, dimethylaminobenzoic acid, isoamyl dimethylaminobenzoate, dioctylaminobenzoic acid, lauryl dimethylaminobenzoate, etc. of tertiary amines to the UV-curable monomer/oligomer (prepolymer) in the coating composition.
．． It can also be blended in an amount of about 0.05 to 3% by weight. As a light source for ultraviolet irradiation, 1 to 50 ultraviolet lamps (for example, low-pressure, medium-pressure, high-pressure mercury lamps with operating pressures from several mmHg to about 10 atmospheres), xenon lamps, tungsten lamps, etc. are used. ~8000μW/
Ultraviolet rays having an intensity of about cm2 are preferably irradiated.
【００２３】[0023]
【実施例】以下に実施例を示し本発明をより具体的に説
明するが、勿論これらに限定されるものではない。なお
、特に断らない限り例中の「部」及び「％」はそれぞれ
「重量部」及び「重量％」を示す。[Examples] The present invention will be explained in more detail with reference to Examples below, but the present invention is of course not limited to these. Note that unless otherwise specified, "parts" and "%" in the examples indicate "parts by weight" and "% by weight," respectively.
【００２４】（実施例１〜３）塗布組成物を、塗工する
面にアンカーコートによる易接着処理を施したポリエチ
レンテレフタレートフィルム（厚さ５０μｍ）に下記の
塗布組成物を乾燥重量が７ｇ／ｍ２ となるように塗布
し、ついで電子線照射装置（エレクトロカーテンＣＢ１
５０ ：ＥＳＩ社製）を用いて５Ｍｒａｄ の電子線を
照射して３種類のオフセットマスター用シートを得た。(Examples 1 to 3) The following coating composition was applied to a polyethylene terephthalate film (thickness: 50 μm) whose surface to be coated had been treated with an anchor coat for easy adhesion to a dry weight of 7 g/m2. Then apply an electron beam irradiation device (Electro Curtain CB1).
50 (manufactured by ESI) and irradiated with an electron beam of 5 Mrad to obtain three types of offset master sheets.
【００２５】〔塗布組成物〕
「実施例１」〔化２〕の構造を有する親水性のプレポリ
マー（ＥＮＴ２０００；関西ペイント（株）製）６０部
、ポリエチレングリコールジアクリレート（平均分子量
４００のポリエチレングリコールの両末端にアクリロイ
ル基を導入したもの）２０部、アクリルアミド２０部及
び水 １００部よりなる混合塗布組成物。[Coating composition] 60 parts of a hydrophilic prepolymer (ENT2000; manufactured by Kansai Paint Co., Ltd.) having the structure of "Example 1" [Chemical formula 2], polyethylene glycol diacrylate (polyethylene glycol having an average molecular weight of 400) (in which acryloyl groups have been introduced at both ends), 20 parts of acrylamide, and 100 parts of water.
【００２６】[0026]
【化２】[Case 2]
【００２７】「実施例２」ポリエチレングリコールジア
クリレート（平均分子量１０００のポリエチレングリコ
ールの両末端にアクリロイル基を導入したもの）４０部
、ポリエチレングリコールジアクリレート（平均分子量
４００のポリエチレングリコールの両末端にアクリロ
イル基を導入したもの）４０部、アクリル酸２０部、水
１００部より成る混合塗布組成物。"Example 2" 40 parts of polyethylene glycol diacrylate (polyethylene glycol having an average molecular weight of 1000 with acryloyl groups introduced at both ends), polyethylene glycol diacrylate (acryloyl groups being introduced at both ends of polyethylene glycol having an average molecular weight of 400) 20 parts of acrylic acid, and 100 parts of water.
【００２８】「実施例３」〔化３〕の構造を有する親水
性のプレポリマー（ＥＮＴＶ５００；関西ペイント（株
）製）の２０％水溶液。"Example 3" A 20% aqueous solution of a hydrophilic prepolymer (ENTV500; manufactured by Kansai Paint Co., Ltd.) having the structure shown in Chemical Formula 3.
【００２９】[0029]
【化３】[Chemical 3]
【００３０】「比較例１」
実施例で用いたフィルム上に界面活性剤（ジグリセリン
モノオレート）の１％エタノール溶液を乾燥重量が ０
．１ｇ／ｍ２ となるように塗布、乾燥してオフセット
マスター用シートを得た。"Comparative Example 1" A 1% ethanol solution of a surfactant (diglycerin monooleate) was placed on the film used in the example with a dry weight of 0.
．． The coating was applied to a concentration of 1 g/m2 and dried to obtain an offset master sheet.
【００３１】「比較例２」
実施例で用いたフィルム上に親水性の樹脂としてポリビ
ニルアルコール（ＰＶＡ−１１７；クラレ（株）製）
の１０％水溶液を乾燥重量が８ｇ／ｍ２ となるように
塗布、乾燥してオフセットマスター用シートを得た。"Comparative Example 2" Polyvinyl alcohol (PVA-117; manufactured by Kuraray Co., Ltd.) was used as a hydrophilic resin on the film used in the example.
A 10% aqueous solution of the above was applied to give a dry weight of 8 g/m 2 and dried to obtain an offset master sheet.
【００３２】「比較例３」
未処理のポリエチレンテレフタレートフィルム（厚さ５
０μｍ）を用い、これをオフセットマスター用シートと
した。"Comparative Example 3" Untreated polyethylene terephthalate film (thickness 5
0 μm), and this was used as an offset master sheet.
【００３３】以上のようにして得られた６種類のシート
につき、吸水性、塗膜強度、耐水性、オフセット印刷性
を次のようにして比較し、その結果を表１に示した。The water absorption, coating strength, water resistance, and offset printability of the six types of sheets obtained as described above were compared as follows, and the results are shown in Table 1.
【００３４】〔吸水性〕水性マーカーで筆記し、筆記性
でチェックした。
◎： 非常に鮮明に筆記された。
○： 鮮明に筆記された。
△： インキがややかすれている。
×： インキがはじいて筆記できない。[Water Absorption] Writing was performed using a water-based marker, and the writability was checked. ◎: Written very clearly. ○: Written clearly. △: Ink is slightly faded. ×: Ink is repelled and writing is not possible.
【００３５】〔塗膜強度〕スチールウールＮｏ．０００
で塗膜表面を軽く１０回こすり塗膜の傷つきの状態を目
視で判定した。
○：ほとんど傷ついていない。
×：傷つきがひどい。[Coating film strength] Steel wool No. 000
The surface of the coating film was lightly rubbed 10 times, and the state of damage to the coating film was visually determined. ○: Almost no damage. ×: Severe damage.
【００３６】〔耐水性〕スポイドで３滴の水を塗膜表面
に滴下し、ガーゼで軽く擦った後の塗膜の損傷を評価し
た。
○：塗膜の損傷がなかった。
×：塗膜が溶けて拭き取られた。[Water Resistance] Three drops of water were dropped onto the surface of the coating film using a dropper, and damage to the coating film was evaluated after rubbing lightly with gauze. ○: There was no damage to the coating film. ×: The coating film was melted and wiped off.
【００３７】〔オフセット印刷性〕得られたシートにＰ
ＰＣにて画像を複写させた。この後水を含ませたロール
でシート上に水を転移させ、次に油性インキを転移させ
た後、シート上に紙を重ねて、画像を転写させた。
○：明瞭な転写画像が得られた。
△：転写画像が得られたが、汚れが目立ち明瞭でない。
×：転写画像が得られない。[Offset printability] P is applied to the obtained sheet.
The image was copied using a PC. After this, water was transferred onto the sheet using a roll moistened with water, and then oil-based ink was transferred, and then paper was placed on top of the sheet to transfer the image. ○: A clear transferred image was obtained. Δ: A transferred image was obtained, but the stain was noticeable and not clear. ×: No transferred image is obtained.
【００３８】[0038]
【表１】[Table 1]
【００３９】[0039]
【発明の効果】〔表１〕の結果より明らかなように、本
発明によるオフセットマスター用シートは吸水性及び耐
水性に優れており、オフセット印刷性にも優れたもので
あった。Effects of the Invention As is clear from the results in Table 1, the offset master sheet according to the present invention had excellent water absorbency and water resistance, and was also excellent in offset printability.
Claims (1)
ー及び／又はオリゴマー（プレポリマー）を主成分とす
る組成物が支持体上に塗工され、該塗工層が電子線或い
は紫外線により硬化せしめられていることを特徴とする
オフセットマスター用シート。Claim 1: A composition containing an electron beam or ultraviolet ray curable hydrophilic monomer and/or oligomer (prepolymer) as a main component is coated on a support, and the coated layer is cured by the electron beam or ultraviolet ray. An offset master sheet that is characterized by being pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6452391A JPH04299143A (en) | 1991-03-28 | 1991-03-28 | Offset master sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6452391A JPH04299143A (en) | 1991-03-28 | 1991-03-28 | Offset master sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04299143A true JPH04299143A (en) | 1992-10-22 |
Family
ID=13260664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6452391A Pending JPH04299143A (en) | 1991-03-28 | 1991-03-28 | Offset master sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04299143A (en) |
-
1991
- 1991-03-28 JP JP6452391A patent/JPH04299143A/en active Pending
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