CS204592B1 - Conserving agent for offset plates based on aluminium - Google Patents
Conserving agent for offset plates based on aluminium Download PDFInfo
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- CS204592B1 CS204592B1 CS175379A CS175379A CS204592B1 CS 204592 B1 CS204592 B1 CS 204592B1 CS 175379 A CS175379 A CS 175379A CS 175379 A CS175379 A CS 175379A CS 204592 B1 CS204592 B1 CS 204592B1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 6
- 229910052782 aluminium Inorganic materials 0.000 title claims description 6
- 239000004411 aluminium Substances 0.000 title 1
- 239000003795 chemical substances by application Substances 0.000 title 1
- 239000000243 solution Substances 0.000 claims description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003755 preservative agent Substances 0.000 claims description 11
- 230000002335 preservative effect Effects 0.000 claims description 11
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 7
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 6
- 239000003995 emulsifying agent Substances 0.000 claims description 6
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 6
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 5
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 230000001476 alcoholic effect Effects 0.000 claims description 3
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 150000002191 fatty alcohols Chemical class 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 3
- PRZSXZWFJHEZBJ-UHFFFAOYSA-N thymol blue Chemical compound C1=C(O)C(C(C)C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C(=CC(O)=C(C(C)C)C=2)C)=C1C PRZSXZWFJHEZBJ-UHFFFAOYSA-N 0.000 claims description 3
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical compound C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 239000012459 cleaning agent Substances 0.000 claims description 2
- 239000002563 ionic surfactant Substances 0.000 claims description 2
- 238000007645 offset printing Methods 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 150000003738 xylenes Chemical class 0.000 claims description 2
- 239000002518 antifoaming agent Substances 0.000 claims 1
- 230000003078 antioxidant effect Effects 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000003086 colorant Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 7
- 238000007639 printing Methods 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical class OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 5
- 230000002209 hydrophobic effect Effects 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- -1 phenyl- Chemical group 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 2
- YAXKTBLXMTYWDQ-UHFFFAOYSA-N 1,2,3-butanetriol Chemical class CC(O)C(O)CO YAXKTBLXMTYWDQ-UHFFFAOYSA-N 0.000 description 1
- JBIJLHTVPXGSAM-UHFFFAOYSA-N 2-naphthylamine Chemical compound C1=CC=CC2=CC(N)=CC=C21 JBIJLHTVPXGSAM-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000008351 acetate buffer Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003974 emollient agent Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005706 microflora Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000007981 phosphate-citrate buffer Substances 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Degasification And Air Bubble Elimination (AREA)
Description
Vynález sa týká konzervačného prostriedku pre mono a polymetalické tlačové platné na báze hliníka.The present invention relates to an aluminum-based mono and polymetallic printing preservative.
Konzervovanie tlačovej platné je založené na vytvoření tenkej mechanicky izotropnej ochranné] vrstvičky, s dobrou adhéziou ná povrchu tlačovej platné, ktorá zabraňuje přístupu molekúl kyslíka, agresívnych plynných a pevných látok. Táto vrstvička sa musí ďalej vyznačovat dostatočnou flexibilitou metalickej podložky. Vyžaduje sa, aby měrná hmotnosť vytvořeného ochranného filmu bola tak velká, aby zabezpečila zníženie hodnoty vnútorného difúzneho koeficienta kyslíka a iných molekúl agresívnych látok pod určitú kritickú hodnotu, ktorá závisí od teploty a kvality medzifázového rozhrania.Preservation of the printing plating is based on the formation of a thin mechanically isotropic protective film, with good adhesion to the printing plating surface, which prevents access of oxygen molecules, aggressive gaseous and solids. This layer must furthermore have sufficient flexibility of the metallic support. The density of the protective film formed is required to be large enough to ensure that the internal diffusion coefficient of oxygen and other aggressive molecules decreases below a certain critical value, which depends on the temperature and quality of the interface.
V súčasnom období sa na konzervovanie ofsetových tlačových platní na báze hliníka používajú roztoky, ktorých podstatnou zložkou je arabská guma a dextríny. V obidvoch prípadoch sa jedná o prírodné materiály, ktorých zdroje sú obmedzené a naviac 1'ahko podliehajú neprlaznivému účinku vzdušnej vlhkosti a mikroflóry.At present, solutions based on gum arabic and dextrins are used to preserve aluminum-based offset printing plates. Both are natural materials whose resources are limited and, moreover, are easily subject to the adverse effects of air humidity and microflora.
Podstata konzervačného roztoku podfa vynálezu je v tom, že pozostáva z emulzie pozostávajúcej z 0,5 až 40 % hmotnostných aromatických uhlovodíkov, výhodné toluenu, xylénu alebo zmesi xylénov, z 0,2 až 5 % hmotnostných emulgátora tenzidu molekulového typu a zbytok do 100 % tvoří o,5 až 4%-ný hmotnostný roztok vodorozpustných derivátov celulózy, výhodné karboxymetylcelulózy, hydroxymetylcelulózy a hydroxyetylcelulózy rozpuštěných v tlmivom 0,1 až 0,3 N roztoku acetátovom, citrofosfátovom alebo fosfátovom. Ako emulgátor možno tiež použiť iónový tenzid v 0,1 až 2%-nom množstve na množstvo aromatického uhlovodíka alebo čistiaci prostriedok na báze voskových emulzií v alkoholickom roztoku v množstve 10 až 50 g sušiny na 100 g aromatického uhlovodíka. Konzervačný prostriedok ďalej obsahuje 0,5 až 0,2 % hmotnostných jednosýtnych alebo viacsýtnych alkoholov Cj až C6 alebo trihydroxyderiváty alifatických uhlovodíkov alebo tenzidy ako sú sulfáty oxyetylovaných vyšších mastných alkoholov, alebo antioxidanty, ako je fenyl-/3-naftylamin, alebo protipeniace přísady ako je dusičnan horečnatý, připadne farbivá, ako je thymolová modrá, alebo zvlečňovadlo, ako je octan etylnatý, pričom všetky tieto ingredienty sa pridávajú v rozmedzí 0,005 až 5 % hmotnostných, na úpravu konkrétných1 vlastností ochranného filmu.The preservative solution according to the invention is characterized in that it consists of an emulsion consisting of 0.5 to 40% by weight of aromatic hydrocarbons, preferably toluene, xylene or a mixture of xylenes, 0.2 to 5% by weight of a molecular-type surfactant emulsifier and the remainder to 100% it is a 5 to 4% by weight solution of water-soluble cellulose derivatives, preferably carboxymethylcellulose, hydroxymethylcellulose and hydroxyethylcellulose dissolved in a 0.1 to 0.3 N buffered acetate, citrophosphate or phosphate solution. An ionic surfactant in an amount of 0.1 to 2% by weight of the aromatic hydrocarbon or a wax emulsion cleaning agent in an alcoholic solution in an amount of 10 to 50 g dry matter per 100 g of aromatic hydrocarbon may also be used as emulsifier. The preservative further comprises 0.5 to 0.2% by weight of C 1 -C 6 monohydric or polyhydric alcohols or trihydroxy derivatives of aliphatic hydrocarbons or surfactants such as sulphates of oxyethylated higher fatty alcohols or antioxidants such as phenyl- / 3-naphthylamine or antifoams. such as magnesium nitrate, optionally dyes, such as thymol blue, or zvlečňovadlo, such as ethyl acetate, all of the ingredients are added in the range 0.005 to 5% by weight, to modify the properties of a particular one of the protective film.
Konzervačný roztok podfa vynálezu využívá výhodných vlastností niektorých vodorozpustných derivátov celulózy schopných spfňať požiadavky uvedené vyššie. Sú to například: hydroxymetylcelulóza, hydroxyetylcelulóza, karboxymetylcelulóza. Reologické vlastnosti ochranných filmov sa podlá vynálezu upravujú podfa konkrétných požiadaviek danej tlačovej formy prídavkom nasledujúcich ingredientov: alkoholy odvo204592 děné od normálnych parafínov, napr. izopropanol, n-butanol, izobutanol, glykoly ako monoetylénglykol, dietylénglykol, trietylénglykol, 1,2-dihydroxypropán, trihydroxyderiváty alifatických uhlovodíkov; 1,2,3-trihydroxypropán, 1,2,3-trihydroxybután, tenzidy: sulfáty oxyetylovaných vyšších mastných alkoholov ako napr. dodecylalkohol, tetradecylalkohol, připadne antioxydant fenyl-beťa-naftyl amin.The preservative solution of the invention takes advantage of the properties of some water-soluble cellulose derivatives capable of meeting the requirements set forth above. Examples are: hydroxymethylcellulose, hydroxyethylcellulose, carboxymethylcellulose. According to the invention, the rheological properties of the protective films are adjusted according to the particular requirements of a given printing form by the addition of the following ingredients: alcohols revocated from normal paraffins, e.g. isopropanol, n-butanol, isobutanol, glycols such as monoethylene glycol, diethylene glycol, triethylene glycol, 1,2-dihydroxypropane, trihydroxy derivatives of aliphatic hydrocarbons; 1,2,3-trihydroxypropane, 1,2,3-trihydroxybutane, surfactants: sulphates of oxyethylated higher fatty alcohols such as e.g. dodecyl alcohol, tetradecyl alcohol, optionally an antioxydant phenyl-tert-naphthyl amine.
Transport možných aktívnych plynných kontaminantov kyslíka, kysličníka uhličitého, kysličníka siřičitého atď. k povrchu kovověj tlačovej platné na báze hliníka cez ochranná vrstvičku se koná vakantným mechanizmom, pričom vzdialenosť susedných intersticálnych poloh v ochrannom filme z hlediska vytýčeného ciela by mala byť čo najmenšia. Toho sa dosiahne postupom, ktorý spočívá vo vytvoření vrstevnatých planárnych štruktúr s vysokou hustotou vodíkových vazieb a anizotropným rozdělením vysokomolekulovej hydrofílnej komponenty v objeme ochranného filmu ta, aby maximum hustoty upakovky bolo situované do adsorpčnej vrstvičky na rozhraní tlačová platňa - ochranný film.Transport of possible active gaseous contaminants of oxygen, carbon dioxide, sulfur dioxide, etc. to the surface of the aluminum-based metallic printing press through the protective layer is provided by a vacuum mechanism, the distance of adjacent interstitial positions in the protective film in terms of the set target should be as small as possible. This is accomplished by the process of forming layered planar structures with high density of hydrogen bonds and by anisotropically distributing the high molecular weight hydrophilic component in the protective film volume such that the maximum density of the braze is placed in the adsorbent layer at the printing plate-protective film interface.
Mechanické vlastnosti ochranného filmu sú podfa vynálezu determinované prítomnosťou adherentných nízkomole kulových zložiek volených tak, aby svojimi rozmermi a distribúciou pravděpodobnosti vytvárania vodíkových vazieb a coulombických interakcií spfňali požiadavky vytvorenia kontinua s čo najmenším volným ohjemom, pričom sa podstatné nemení kinetická elasticita ρδvodného polymérneho filmu.According to the invention, the mechanical properties of the protective film are determined by the presence of adherent low-spherical components selected so that their dimensions and probability distribution of hydrogen bonding and coulombic interactions meet the requirements of continuum formation with as little free bending as possible.
Konrétne postupy přípravy a použitia konzervačného roztoku sú uvedené v nasledujúcich príkladoch.Specific procedures for the preparation and use of the preservative solution are given in the following examples.
Příklad 1Example 1
Do 1 litrovej nádoby sa postupné dávkuje 450 ml 3%-ného roztoku karboxymetylcelulózy rozpustenej v 0,2 N acetátovom tlmivom roztoku nastavenom na pH = 5,5; 20 ml450 ml of a 3% solution of carboxymethylcellulose dissolved in 0.2 N acetate buffer adjusted to pH = 5.5 are gradually added to a 1 liter vessel; 20 ml
1,2,3-trihydroxypropánu, 200 ml toluénu, 30 ml etylalkoholu a 10 g monoesteru n-oktylalkoholu a kyseliny sírovej. Nanášanie na vyvolaná tlačovú platňu na báz;e hliníka sa koná po dokladnom zhomogenizovaní všetkých komponentov v emulgátore. Vlastně nanášanie na platňu možno vykonat ručně špongiou alebo pomocou nanášacích valcov vyvolávacieho automatu na tlačové platné, pričom hrubku nanesenej vrstvy bolo možné regulovat. Vytvořený ochranný film bol hydrofóbny, nepozorovalo sa narušenie reliefu hydratáciou ani po mesačnom skladovaní a ochranný film neoxidoval.1,2,3-trihydroxypropane, 200 ml of toluene, 30 ml of ethyl alcohol and 10 g of n-octyl alcohol-sulfuric acid monoester. The application to the invoked aluminum-based printing plate takes place after a thorough homogenization of all the components in the emulsifier. In fact, the plating can be carried out manually by means of a sponge or by means of the plating rollers of the developing machine on the platen, whereby the thickness of the applied layer can be controlled. The formed protective film was hydrophobic, no relief of relief by hydration was observed even after a month's storage and the protective film did not oxidise.
Příklad 2Example 2
Postup zhodný ako v příklade 1, naviac sa do zmesi před emulgáciou přidá 30 ml etylacetátu ako zvláčňovadlo. Doba zasýchania sa výrazné nepredfži a zostáva ako v příklade 1 přibližné 1—2 min. Zvyšováním teploty sa doba zasýchania skracuje. Vytvořený ochranný film bol hydrofóbny, nepozorovalo sa narušenie reliefu hydratáciou a film neoxidoval.The procedure of Example 1 is followed, in addition, 30 ml of ethyl acetate are added to the mixture as an emollient prior to emulsification. The drying time does not significantly increase and remains, as in Example 1, for approximately 1-2 minutes. Increasing the temperature shortens the drying time. The protective film formed was hydrophobic, no relief of hydration was observed, and the film did not oxidise.
Příklad 3Example 3
Postup a zloženie ako v příklade 1,'naviac ako zvláčňovadlo sa do zmesi před zhomogenizovaním v mechanickom miešacom zariadení přidá 20 ml etylénglykolu, ktorý výrazné ovplyvňuje vláčnost povrchového ochranného filmu. Ďalšie spracovanie sa koná rovnako ako v příklade 1 a 2 a kvalita vytvorenej ochrannéj vrstvy bola rovná kvalitě vrstvy podfa příkladu 1 a 2.Procedure and composition as in Example 1, in addition as a plasticizer, 20 ml of ethylene glycol is added to the mixture prior to homogenization in a mechanical mixer, which significantly affects the suppleness of the surface protective film. Further processing takes place as in Examples 1 and 2 and the quality of the formed protective layer was equal to that of Examples 1 and 2.
Příklad 4Example 4
Postup a ziloženie ochrannej emulzie rovnaké ako v příklade 1, namiesto toluénu sa však použije petrolej v množstve 50 ml. Ďalšie spracovanie sa koná ako v příklade 1 a 2. Vytvořený ochranný film bol hydrofóbny, nepozorovalo sa narušenie reliefu hydratáciou ani po mesačnom skladovaní a ochranný film neoxidoval.Procedure and composition of the protective emulsion as in Example 1, but instead of toluene, 50 ml kerosene was used. Further processing takes place as in Examples 1 and 2. The protective film formed was hydrophobic, no relief of relief by hydration was observed even after monthly storage and the protective film did not oxidise.
Příklad 5Example 5
Do 1 litrovej nádoby sa postupné nadávkuje 400 ml 2%-ného roztoku hydroxymetylcelulózy vo fosfátocitrátovom tlmivom roztoku 0,2 N, nastavenom na pH 5,5 glycerín v množstve 30 ml izopropylalkoholu 10 ml, 20 ml zmesi xylénov v rovnakom pomere, 0,1 g fenyl-beta-naftylaminu a 0,5 g alkylpolyglykolétersulfátu. Ďalší postup ako v příklade 1 a kvalita vytvořeného ochranného filmu bola rovná kvalitě filmu v příklade 1.400 ml of a 2% solution of hydroxymethylcellulose in 0.2 N phosphate-citrate buffer, adjusted to pH 5.5, glycerine in 30 ml of isopropyl alcohol 10 ml, 20 ml of xylene mixture in the same ratio, 0.1 ml g of phenyl-beta-naphthylamine and 0.5 g of alkyl polyglycol ether sulfate. The further procedure as in Example 1 and the quality of the protective film formed was equal to the film of Example 1.
Příklad 6Example 6
Postup ako v příklade 5, taktiež zloženie emulzie, len miesto uvedeného tenzldu sa použije 10 g čistiaceho prostriedku na báze voskových emulzií v alkoholických roztokoch. Vytvořený ochranný film bol hydrofóbny, nepozorovalo sa narušenie jeho reliefu ani po dlhodobom skladovaní.Procedure as in Example 5, also emulsion composition, only 10 g of wax emulsion detergent in alcoholic solutions were used instead of the surfactant. The formed protective film was hydrophobic, no disturbance of its relief was observed even after long-term storage.
Příklad 7 liter ochranného roztoku sa připraví zmiešaním a intenzívnym zhomogenizovaním zložiek v nasledujúcom poradí: 300 ml 1%-ného roztoku hydroxymetylcelulózy vo fosfátovom 0,2 N tlmivqm roztoku, ďalšie komponenty ako v příklade 1, naviac výsledná disperzia sa zafarbí prídavkom 0,3 g thymolovej modrej a peneniu sa zamedzí prídavkom 1 g dusičnanu horečnatého. Vytvořený ochranný film bol hydrofóbny, nepozorovalo sa narušenie jeho reliefu ani po dlhodobom skladovaní.Example 7 liter of preservative solution is prepared by mixing and vigorously homogenizing the ingredients in the following order: 300 ml of a 1% solution of hydroxymethylcellulose in a phosphate 0.2 N buffer solution, additional components as in Example 1, in addition the resulting dispersion is colored by adding 0.3 g thymol blue and foaming is prevented by the addition of 1 g magnesium nitrate. The formed protective film was hydrophobic, no disturbance of its relief was observed even after long-term storage.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS175379A CS204592B1 (en) | 1979-03-16 | 1979-03-16 | Conserving agent for offset plates based on aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS175379A CS204592B1 (en) | 1979-03-16 | 1979-03-16 | Conserving agent for offset plates based on aluminium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS204592B1 true CS204592B1 (en) | 1981-04-30 |
Family
ID=5352706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS175379A CS204592B1 (en) | 1979-03-16 | 1979-03-16 | Conserving agent for offset plates based on aluminium |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS204592B1 (en) |
-
1979
- 1979-03-16 CS CS175379A patent/CS204592B1/en unknown
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