DE2616259A1 - Ink-correcting fluids contg. sulphite and water-resistant binder - allowing re-application of the same ink - Google Patents

Ink-correcting fluids contg. sulphite and water-resistant binder - allowing re-application of the same ink

Info

Publication number
DE2616259A1
DE2616259A1 DE19762616259 DE2616259A DE2616259A1 DE 2616259 A1 DE2616259 A1 DE 2616259A1 DE 19762616259 DE19762616259 DE 19762616259 DE 2616259 A DE2616259 A DE 2616259A DE 2616259 A1 DE2616259 A1 DE 2616259A1
Authority
DE
Germany
Prior art keywords
ink
water
sulphite
agent
contg
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.)
Granted
Application number
DE19762616259
Other languages
German (de)
Other versions
DE2616259B2 (en
DE2616259C3 (en
Inventor
Edgar Dr Krumbein
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.)
Pelikan GmbH
Original Assignee
Gunther Wagner Pelikan Werke GmbH
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 Gunther Wagner Pelikan Werke GmbH filed Critical Gunther Wagner Pelikan Werke GmbH
Priority to DE19762616259 priority Critical patent/DE2616259C3/en
Publication of DE2616259A1 publication Critical patent/DE2616259A1/en
Publication of DE2616259B2 publication Critical patent/DE2616259B2/en
Application granted granted Critical
Publication of DE2616259C3 publication Critical patent/DE2616259C3/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D10/00—Correcting fluids, e.g. fluid media for correction of typographical errors by coating

Abstract

Fluids for removing ink from paper, contain a sulphite, esp Na2SO3 as bleaching agent, with addn. of a water-soluble binder which is water-resistant after drying. Suitable binders are acid polyacrylates dissolved in alkali and/or styrene copolymers. Binder prevents wetting and re-activation of the sulphite when fresh ink is applied. Fluid also contains a levelling or smoothing agent, pref. methyl cellulose, to give a dry surface similar to the paper.

Description

Hannover, "den 7.4.1976 PAT-76/5 ht-wuHanover, "7.4.1976 PAT-76/5 ht-wu

TintenkorrekturmittelInk correction media

Tintenkorrekturmittel, auch Tintenentferner oder Extinktionsflüssigkeit genannt, enthalten schwefligsaure Salze als das reduzierend wirkende tintenentfärbende Mittel. Üblicherweise setzt man hierfür Natriumsulfit ein.Ink correction agents, also ink removers or extinction liquids called, contain sulphurous acid salts as the reducing ink discoloring agent. Sodium sulfite is usually used for this.

Es ist eine bekannte Tatsache und zugleich ein erheblicher Nachteil, daß mit solchermaßen entfärbenden Mitteln überschriebene oder überstrichene Stellen nicht wieder mit der gleichen Schreibflüssigkeit überschrieben werden können. Das liegt daran, daß der für die Reduktion (Entfärbung) verwendete Wirkstoff, das schwefligsäure
Salz, auch nach dem Auftrocknen des Lösungsmittels voll wirksam bleibt. Wird nun mit gleicher Tinte diese Stelle erneut überschrieben, dann entsteht mit Hilfe der Tintenflüssigkeit erneut die diese Tinte entfärbende Flüssigkeit und das Spiel beginnt von vorn.It is a known fact and at the same time a considerable disadvantage that areas overwritten or swept over with such decolorizing agents cannot be overwritten again with the same writing fluid. This is due to the fact that the active ingredient used for the reduction (discoloration), sulfurous acid
Salt remains fully effective even after the solvent has dried up. If this point is now overwritten again with the same ink, the liquid that decolorizes this ink is created again with the help of the ink and the game starts all over again.

Es mußte somit eine Möglichkeit gesucht und gefunden
werden, die nach dem Auftrocknen der Korrekturflüssigkeit auf dem papier verbleibenden Rückstände an schwefligsauren Salzen daran zu hindern, nach Zufuhr neuer
Feuchtigkeit (z. B. durch Tinten) erneut aktiv nämlich entfärbend wirksam zu werden.A possibility had to be sought and found
to prevent the residues of sulphurous acid salts remaining on the paper after the correction fluid has dried, after adding new ones
Moisture (e.g. through inks) to become active again, namely to have a decolorizing effect.

Selbstverständlich war es bisher möglich, solchermaßen gebleichte Stellen auf einem Blatt Papier mit einer andersartigen Schreibflüssigkeit zu überschreiben, ohne
daß das Natriumsulfit diese ausbleichte, eben weil die darin enthaltenen Farbstoffe infolge ihrer andersartigen chemischen Zusammensetzung von Natriumsulfit nicht reduziert bzw. entfärbt werden. Das war jedoch umständlich und von vielerlei Zufällen abhängig und deshalb
sehr verbesserungsbedürftig.Of course, it has hitherto been possible to overwrite such bleached areas on a sheet of paper with a different type of writing fluid without
that the sodium sulfite bleached them, precisely because the dyes contained therein are not reduced or discolored by sodium sulfite due to their different chemical composition. However, that was cumbersome and dependent on many coincidences and therefore
very in need of improvement.

"Die Erfindung besteht darin, daß dem mittels Reduktion tintenentfärbenden Mittel auf Basis schwefligsaurer Salze,"The invention consists in the fact that the ink decolorizing agent based on sulfuric acid salts by means of reduction,

709843/0263709843/0263

insbesondere Natriumsulfat, ein Anteil an wasserlöslichem, wasserfest auftrocknendem Bindemittel wie saurer, alkalisch gelöster Polyacrylate und/oder Styrolcqpolymerisate hinzugefügt wird. Um diese Schichtoberfläche des Papiers noch besser anzugleichen, ist es zweckmäßig, dem wasserfest auftrocknenden, wasserlöslichen Bindemittel ein Glättungsmittel für diese Schichtoberfläche beizugeben, wofür sich insbesondere Methylcellulose eignet.especially sodium sulfate, a proportion of water-soluble, water-resistant drying binders such as acidic, alkaline-dissolved polyacrylates and / or styrene polymers will be added. In order to match this layer surface of the paper even better, it is advisable to make it waterproof add a smoothing agent for this layer surface to the drying, water-soluble binder, for which methyl cellulose is particularly suitable.

Wird nun ein Tintenstrich auf einem Blatt papier mit einem nach dieser Erfindung hergestellten tintenentfärbenden Mittel überstrichen, so entsteht mit dem Auftrocknen dieses Korrekturstriches dank des wasserlöslichen, aber wasserfest auftrocknenden Bindemittels darin ein geschlossener Film über dem trockenen Rückstand des tintenentfärbenden Mittels auf dem Papier. Dieser Film verhindert, daß Feuchtigkeit irgendwelcher Art z. B- aus der Tinte mit dem Reduktionsmittel in Verbindung treten kann und die Reduktion, nämlich Entfärbung, erneut eingeleitet werden kann. Die völlige Abdeckung und Abschirmung der Rückstände des tintenentfärbenden Mittels durch das in ihm enthaltene Bindemittel nach dem Auftrocknen ermöglicht die erneute überschreibung der gleichen Stelle mit der gleichen Tinte.Now is a line of ink on a sheet of paper with a ink discoloring agents made in accordance with this invention Medium overcoated, as soon as this correction line dries up, thanks to the water-soluble, but waterproof drying binder in a closed film over the dry residue of the ink decolorizing Means on paper. This film prevents moisture of any kind, e.g. B- from the ink can come into contact with the reducing agent and the reduction, namely discoloration, is initiated again can be. The complete covering and shielding of the residues of the ink decolorizing agent thanks to the binding agent it contains after it has dried, the same place with same ink.

An Hand einiger Beispiele sei die Erfindung näher erläuterti The invention will be explained in more detail using a few examples

Beispiel 1example 1

Natriumsulfit 1.50Sodium sulfite 1.50

Natriummetasilikat 1.50Sodium metasilicate 1.50

Wasser entsalzt 81.85Desalinated water 81.85

Eisencitrat 0.05 saure, alkalisch gelösteIron citrate 0.05 acidic, alkaline solution

Polyacrylatdispersion (Luhydran LR 8434) 15-00Polyacrylate dispersion (Luhydran LR 8434) 15-00

hochmolekulare Methylcellulose (MC 6000) 0.10 high molecular weight methyl cellulose (MC 6000) 0.10

100.00100.00

■ 709843/0263 - 3 -■ 709843/0263 - 3 -

Natriumsulfit 1.80Sodium sulfite 1.80

Natriummetasilikat 1.26Sodium Metasilicate 1.26

Wasser entsalzt * 68.90Desalinated water * 68.90

Eisencitrat 0.02Iron citrate 0.02

Exsenglycerophosphat 0-02 20%ige wäßrige Dispersion eines
sauren Styrol-CopolyraerisatesExsenglycerophosphate 0-02 20% aqueous dispersion of a
acidic styrene copolymer

(enth. 1 % Ammoniak) 25.00 2%ige wäßrige Lösung einer(contains 1 % ammonia) 25.00 2% aqueous solution of a

hochmolekularen Methylcellulose 3.0O high molecular weight methyl cellulose 3.0O

100.00100.00

709843/0263709843/0263

Claims (3)

PatentansprücheClaims 1. Mittels Reduktion tintenentfärbendes Mittel auf Basis schwefligsaurer Salze, insbesondere Natriumsulfit, 1. By means of reduction, an ink-discoloring agent based on sulphurous acid salts, in particular sodium sulphite, gekennzeichnet durchmarked by einen Anteil an wasserlöslichem, wasserfest auftrocknendem Bindemittel wie saurer, alkalisch gelöster Polyacrylate und/order Styrolcopolymerisate.a proportion of water-soluble, water-resistant drying binding agent such as acidic, alkaline dissolved Polyacrylates and / or styrene copolymers. 2. Mittels Reduktion tintenentfärbendes Mittel nach Anspruch 1,2. By means of reduction ink decolorizing agent according to claim 1, dadurch gekennzeichnet,characterized, daß dem wasserlöslichen, wasserfest auftrocknenden Bindemittel ein Glättungsmittel für die zu erzielende Schichtoberfläche beigegeben ist.that the water-soluble, waterproof drying binder is a smoothing agent for the to be achieved Layer surface is added. 3. Mittels Reduktion tintenentfärbendes Mittel nach Anspruch 2,3. By means of reduction, ink-decolorizing agent after Claim 2, dadurch gekennzeichnet,characterized, daß als Glättungsmittel für die zur erzielende Schichtoberfläche Methy!cellulose verwendet ist.that methyl cellulose is used as a smoothing agent for the layer surface to be achieved. 709843/0263709843/0263 ORIGINAL INSPECTEDORIGINAL INSPECTED
DE19762616259 1976-04-13 1976-04-13 Ink correction media Expired DE2616259C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19762616259 DE2616259C3 (en) 1976-04-13 1976-04-13 Ink correction media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762616259 DE2616259C3 (en) 1976-04-13 1976-04-13 Ink correction media

Publications (3)

Publication Number Publication Date
DE2616259A1 true DE2616259A1 (en) 1977-10-27
DE2616259B2 DE2616259B2 (en) 1981-02-19
DE2616259C3 DE2616259C3 (en) 1981-12-03

Family

ID=5975297

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762616259 Expired DE2616259C3 (en) 1976-04-13 1976-04-13 Ink correction media

Country Status (1)

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DE (1) DE2616259C3 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815068A1 (en) * 1978-04-07 1979-10-18 Pelikan Werke Wagner Guenther aq. ink erasing compsn. contg. sodium sulphite and soluble binder - has low mol. wt. alcohol, esp. ethanol, added to improve drying and writing surface quality
FR2427369A1 (en) * 1978-05-30 1979-12-28 Kores Holding Zug Ag Correcting agent for recording material - which is based on dyestuff precursor and Lewis acid, contains binder and reducing agent
WO1994011424A2 (en) * 1992-11-05 1994-05-26 The Gillette Company Ink eradicator system
US5549742A (en) * 1992-09-18 1996-08-27 Gillette Company Assembly or set of different color inks and an assembly of writing instruments
US5649999A (en) * 1996-02-22 1997-07-22 The Gillette Company Ink eradicator system
US5916357A (en) * 1997-03-25 1999-06-29 The Gillette Company Eradicable inks
US6149721A (en) * 1999-02-03 2000-11-21 The Gillette Company Solvent-based pen inks

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4036625A1 (en) * 1990-10-11 1992-04-16 Tipp Ex Gmbh & Co Kg NON-BLOWING CORRECTIVE FLUID

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815068A1 (en) * 1978-04-07 1979-10-18 Pelikan Werke Wagner Guenther aq. ink erasing compsn. contg. sodium sulphite and soluble binder - has low mol. wt. alcohol, esp. ethanol, added to improve drying and writing surface quality
FR2427369A1 (en) * 1978-05-30 1979-12-28 Kores Holding Zug Ag Correcting agent for recording material - which is based on dyestuff precursor and Lewis acid, contains binder and reducing agent
US5549742A (en) * 1992-09-18 1996-08-27 Gillette Company Assembly or set of different color inks and an assembly of writing instruments
WO1994011424A2 (en) * 1992-11-05 1994-05-26 The Gillette Company Ink eradicator system
WO1994011424A3 (en) * 1992-11-05 1994-08-04 Gillette Co Ink eradicator system
US5378752A (en) * 1992-11-05 1995-01-03 The Gillette Company Ink eradicator system including film forming polymer
AU681871B2 (en) * 1992-11-05 1997-09-11 Gillette Company, The Ink eradicator system
AU691446B2 (en) * 1992-11-05 1998-05-14 Gillette Company, The Ink eradicator system
US5649999A (en) * 1996-02-22 1997-07-22 The Gillette Company Ink eradicator system
US5916357A (en) * 1997-03-25 1999-06-29 The Gillette Company Eradicable inks
US6149721A (en) * 1999-02-03 2000-11-21 The Gillette Company Solvent-based pen inks

Also Published As

Publication number Publication date
DE2616259B2 (en) 1981-02-19
DE2616259C3 (en) 1981-12-03

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Legal Events

Date Code Title Description
OGA New person/name/address of the applicant
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8327 Change in the person/name/address of the patent owner

Owner name: PELIKAN GMBH, 30177 HANNOVER, DE