EP0192813B1 - Solution de mouillage pour plaques d'imprimerie offset - Google Patents

Solution de mouillage pour plaques d'imprimerie offset Download PDF

Info

Publication number
EP0192813B1
EP0192813B1 EP85110346A EP85110346A EP0192813B1 EP 0192813 B1 EP0192813 B1 EP 0192813B1 EP 85110346 A EP85110346 A EP 85110346A EP 85110346 A EP85110346 A EP 85110346A EP 0192813 B1 EP0192813 B1 EP 0192813B1
Authority
EP
European Patent Office
Prior art keywords
collagen
soluble
printing
offset printing
printing plates
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.)
Expired
Application number
EP85110346A
Other languages
German (de)
English (en)
Other versions
EP0192813A1 (fr
Inventor
Walter Rudi Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to AT85110346T priority Critical patent/ATE39232T1/de
Publication of EP0192813A1 publication Critical patent/EP0192813A1/fr
Application granted granted Critical
Publication of EP0192813B1 publication Critical patent/EP0192813B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Definitions

  • the invention relates to a means for improving the dampening of offset printing forms.
  • DE-OS-2 625 604 describes dampening solutions based on acidic alcohol / water solutions with mono- and polyvalent low-alkyl alcohols and glycol ethers with molecular weights of 170 or less, in which no more than four successive carbon atoms should be present.
  • These fountain solutions contain polyacrylamides, acids and their salts, optionally together with hydroxymethylcellulose, in an amount of 0.001 to 5% by weight.
  • Metal nitrates and organic chelating agents are also added.
  • the dampening solution additives consist of silicon dioxide or mixed oxides, with polyhydric alcohols and citrate buffers optionally being added. No further details are given on the type and mode of action of the polyhydric alcohols.
  • the product should also be biodegradable.
  • H. Collagen that is not cross-linked or denatured by aging or other treatment is known and has the following properties:
  • the a chain consists of two subunits a 1 and a 2 , each of which has a molecular weight of approximately 100,000 and differ slightly from one another in the type of the amino acids forming them.
  • the ⁇ chain consists of two subunits: ⁇ 11 , which consists of two Subunits a 1 is constructed, and ⁇ 12 , which consists of a subunit a 1 and a subunit a 2.
  • the two subunits ⁇ 11 and ß 12 have a molecular weight of approximately 200,000.
  • each helix is a straight-chain polypeptide chain, which is referred to as a telopeptide, with a length of approximately 5 nm.
  • a collagen can be obtained, for example, from supporting and connective tissues of the tendons, ligaments, cartilage and proteinaceous bone substance and the skin of, in particular, young animals, for example calves , can be obtained by extraction with weakly acidic aqueous solution.
  • Native, soluble elastin is a non-cross-linked fiber protein that is closely related to collagen and the main component of the elastic fibers in the tendons.
  • hydrolysates of native collagen and / or of native elastin surprisingly proved to be the solution to all of the above-mentioned difficulties which arise with the previously known water-soluble polymers occurred.
  • Extensive printing tests and measurements of surface tensions have shown that these hydrolysates are equally well adsorptively bound to the non-printing surfaces of the offset printing form and to the printing blanket and ensure an excellent, permanent hydrophilizing effect of the dampening solution.
  • these polymers are absolutely non-toxic. They can be produced by known methods, for example enzymatically.
  • the deamidation of the collagen molecule is expediently carried out by the action of alkalis or acids. It is based on an ammonia elimination from glutamine and asparagine with conversion into the corresponding acids:
  • the collagen molecule Apart from deamidation, the collagen molecule must therefore retain all the other properties of the soluble collagen.
  • the dampening solution is preferably adsorbed on the surface areas on which dampening solution was already present. This behavior is advantageous if the amount of dampening solution added is subject to certain fluctuations during the printing process (interruption of the printing process), so that the hydrophilic surfaces can be temporarily undersupplied in this regard.
  • the proposed dampening solution contains 0.01 to 3% by weight of organic polymers, based on the total weight of the solution, under conditions of use. Higher concentrations can lead to undesirable gel formation on the printing surface, smaller amounts no longer show a sufficient hydrophobing effect. At least the collagen and / or elastin hydrolyzates as active ingredients must be included.
  • the pH of the dampening solution according to the invention is between 4.5 and 5.5. If it is smaller, the printing plate will be perfectly clean; however, it can be chemically attacked and the paper and ink can be adversely affected. The drying of the ink is also delayed. When the pH is above 7, the binder in the printing ink is usually saponified.
  • buffers known per se such as e.g. Sodium citrate / citric acid or starch citrates have been found to be suitable.
  • the setting and stabilization of the optimal surface energy of the dampening solution i.e. its ability to produce a thin, stable and uniform film on the hydrophilic surfaces of the printing form, is preferably carried out according to the present invention by adding non-polymeric alcohols and / or alkane diols with OH groups in ( 1,2) or (1,3) position, the chain length n of which, based on the C atoms, is n,> 6, concentrations of 0.05 to 1.0% by weight being the most advantageous. These substances also act as defoamers in the specified proportions.
  • Polymers or short-chain alcohols do not show this combination of effects, or, as in the case of isopropyl alcohol or ethanol, amounts of 8-15% are required in order to set the same surface energies as above.
  • the values of the polar components of the specific free surface energy are not at all achieved with these latter alcohols.
  • the alcohols according to the invention have no toxic effects in the amounts stated, especially since they become volatile even under the conditions of use of the printing process.
  • the dampening solution according to the invention small amounts of known organic complexing agents, for. B. ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA) or hydroxyethylenediaminetriacetic acid (HEDTA).
  • EDTA ethylenediaminetetraacetic acid
  • DTPA diethylenetriaminepentaacetic acid
  • HEDTA hydroxyethylenediaminetriacetic acid
  • the pH values of the dampening solution according to the invention can therefore be individually adjusted without further ado. Nevertheless, any interruption in the printing process does not lead to a deterioration in the dampening film, which is usually the case when using conventional dampening solutions.
  • the amount of waste when starting up the printing unit is therefore minimal; in the best case it can even be printed without rejects.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paper (AREA)
  • Printing Methods (AREA)

Claims (3)

1. Agent mouillant pour plaques d'impression en offset, comportant au moins un polymère organique hydrosoluble comme constituant actif, caractérisé en ce qu'il contient un milieu aqueux ayant un pH se situant entre 4,5 et 5,5 et dont la teneur totale en polymères organiques s'élève à 0,01 - 3 % en poids, tandis que, comme polymère(s), il contient au moins des hydrolysats hydrosolubles de collagène naturel soluble dans un milieu aqueux faiblement acide et/ou de l'élastine obtenue de la même manière.
2. Agent mouillant selon la revendication 1, caractérisé en ce que, comme polymère organique, il contient, en outre, du désamido-collagène que l'on prépare sous l'action d'alcalis ou d'acides sur du collagène naturel soluble par substitution de 30 à 60 % de ses groupes amido par des groupes hydroxyle.
3. Agent mouillant selon la revendication 1 ou 2, caractérisé en ce que, comme additifs supplémentaires, il contient 0,05 à 1,0% en poids d'alcanediols et/ou d'alcools non polymères comportant des groupes hydroxyle en position (1,2) ou (1,3) et ayant, rapporté aux atomes de carbone, une longueur de chaîne de n > 6.
EP85110346A 1985-02-16 1985-08-19 Solution de mouillage pour plaques d'imprimerie offset Expired EP0192813B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85110346T ATE39232T1 (de) 1985-02-16 1985-08-19 Feuchtmittel fuer offsetdruckformen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3505452A DE3505452C2 (de) 1985-02-16 1985-02-16 Feuchtmittel für Offsetdruckformen
DE3505452 1985-02-16

Publications (2)

Publication Number Publication Date
EP0192813A1 EP0192813A1 (fr) 1986-09-03
EP0192813B1 true EP0192813B1 (fr) 1988-12-14

Family

ID=6262761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110346A Expired EP0192813B1 (fr) 1985-02-16 1985-08-19 Solution de mouillage pour plaques d'imprimerie offset

Country Status (6)

Country Link
US (1) US4711670A (fr)
EP (1) EP0192813B1 (fr)
JP (1) JPS61189997A (fr)
AT (1) ATE39232T1 (fr)
BR (1) BR8505455A (fr)
DE (2) DE3505452C2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517959A1 (fr) * 1991-06-10 1992-12-16 Agfa-Gevaert N.V. Produit de mouillage pour un cliché lithographique diazoique
US5228906A (en) * 1992-05-01 1993-07-20 Fidler Kenneth L Moistening agent for offset printing plates
JP2005535781A (ja) * 2002-08-15 2005-11-24 ドウ・コーニング・ゲーエムベーハー 機械的な運動を減衰させるための組成物および装置
DE102007042107B4 (de) * 2007-09-05 2010-07-15 Siemens Ag Pharmazeutische Zusammensetzung mit eisenbindendem Agens
US20090078140A1 (en) * 2007-09-26 2009-03-26 Fujifilm Corporation Fountain solution composition for lithographic printing and heat-set offset rotary printing process
JP5311193B2 (ja) * 2007-09-26 2013-10-09 富士フイルム株式会社 平版印刷用湿し水組成物及びヒートセットオフ輪印刷方法
JP2009096178A (ja) * 2007-09-26 2009-05-07 Fujifilm Corp 平版印刷用湿し水組成物及びヒートセットオフ輪印刷方法
EP2042338A3 (fr) * 2007-09-26 2010-03-10 Fujifilm Corporation Composition de solution de mouillage pour impression lithographique et procédé d'impression en offset utilisant des encres thermoséchantes
JP2009234247A (ja) * 2008-03-07 2009-10-15 Fujifilm Corp 平版印刷用湿し水組成物及びヒートセットオフ輪印刷方法
JP5288268B2 (ja) 2009-03-25 2013-09-11 富士フイルム株式会社 平版印刷用湿し水組成物及びヒートセットオフ輪印刷方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042524A (en) * 1958-02-12 1962-07-03 Gen Aniline & Film Corp Plasticized gelatin and related proteinaceous colloids
US3738913A (en) * 1970-09-11 1973-06-12 Wilson Pharm & Chem Corp Method of preparing polypeptides
DE2514844A1 (de) * 1975-04-04 1977-03-17 Freudenberg Carl Fa Kosmetischer wirkstoff
NL7603530A (nl) * 1975-04-07 1976-10-11 Dow Chemical Co Werkwijze, samenstelling en emulsie voor de be- handeling van beeld-dragende lithografische druk- platen, alsmede als zodanig verkregen beklede platen.

Also Published As

Publication number Publication date
DE3505452A1 (de) 1986-08-21
BR8505455A (pt) 1986-12-16
DE3566786D1 (en) 1989-01-19
DE3505452C2 (de) 1986-12-04
EP0192813A1 (fr) 1986-09-03
JPS61189997A (ja) 1986-08-23
ATE39232T1 (de) 1988-12-15
US4711670A (en) 1987-12-08

Similar Documents

Publication Publication Date Title
DE69102662T2 (de) Tinte, Tintenstrahldruckverfahren und diese Tinte verwendendes Instrument.
DE2459154C2 (de) Durch optische Zeichenleser und das Auge lesbare Tinte für das Tintenstrahldruckverfahren
DE2504594C2 (de) Wäßrige Desensibilisierungslösung zur Verwendung beim Herstellen lithographischer Druckformen sowie Verwendung der Lösung
EP0192813B1 (fr) Solution de mouillage pour plaques d'imprimerie offset
EP0249752B1 (fr) Solution de mouillage pour lithographie contenant un mélange de colloides
DE2844232C2 (de) Naßfeste Tinte für das Tintenstrahldruckverfahren
DE3439884A1 (de) Staubfreie, pulvrige zahnabdruckmassen auf alginatbasis
DE2625604A1 (de) Befeuchtungsloesung
DE2411832A1 (de) Lithographische druckfarbe
DE3149258A1 (de) Reinigungs- und kratzerbeseitigungs-zubereitung, verfahren zu ihrer herstellung und deren verwendung
EP0219719B1 (fr) Composition de mouillage pour l'impression lithographique
DE69013795T2 (de) Feuchtwasser für den Offsetdruck.
DE3882179T2 (de) Zusatzmittel für lithographische Drucktinte.
DE60209172T2 (de) Feuchtmittelzusammensetzung für Flachdruckplatte und Flachdruckverfahren
DE2901664A1 (de) Mittel zur herstellung einer feuchtloesung fuer lithographische druckverfahren
EP0456074A2 (fr) Agent mouillant pour l'impression offset
EP0111136B1 (fr) Additif pour solution de mouillage pour l'impression lithographique
EP0032653A2 (fr) Encre corrigible par réaction chimique
DE2645550C3 (de) Druckfarbenzusatz
EP0522435A1 (fr) Concentré et solution de mouillage ainsi que leur utilisation dans l'impression offset
DE3439220A1 (de) Propanol enthaltendes Entwicklergemisch sowie Verfahren zur Herstellung reprographischer Materialien
DE69202895T2 (de) Feuchtmittelzusatz und Anwendung desselben.
DE68915340T2 (de) Eingefärbte Feuchtwalze für Steindruck.
DE3538703A1 (de) Befeuchtungsloesung fuer den offsetdruck
EP0358113A2 (fr) Solution de mouillage pour l'impression offset

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI NL

XX Miscellaneous (additional remarks)

Free format text: EIN ANTRAG GEMAESS REGEL 88 EPUE AUF BERICHTIGUNG DER ZEILE 7 AUF SEITE 7 WURDE AM 22.02.86 EINGEREICHT.

17P Request for examination filed

Effective date: 19860721

17Q First examination report despatched

Effective date: 19880108

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL

REF Corresponds to:

Ref document number: 39232

Country of ref document: AT

Date of ref document: 19881215

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3566786

Country of ref document: DE

Date of ref document: 19890119

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19890420

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19890819

Ref country code: AT

Effective date: 19890819

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890831

Ref country code: CH

Effective date: 19890831

Ref country code: BE

Effective date: 19890831

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: FIRMA CARL FREUDENBERG

Effective date: 19890831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900301

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19900427

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST