DE2815068A1 - 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 - Google Patents

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

Info

Publication number
DE2815068A1
DE2815068A1 DE19782815068 DE2815068A DE2815068A1 DE 2815068 A1 DE2815068 A1 DE 2815068A1 DE 19782815068 DE19782815068 DE 19782815068 DE 2815068 A DE2815068 A DE 2815068A DE 2815068 A1 DE2815068 A1 DE 2815068A1
Authority
DE
Germany
Prior art keywords
alcohol
esp
ethanol
parts
compsn
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.)
Withdrawn
Application number
DE19782815068
Other languages
German (de)
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.)
Gunther Wagner Pelikan Werke 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 DE19782815068 priority Critical patent/DE2815068A1/en
Publication of DE2815068A1 publication Critical patent/DE2815068A1/en
Withdrawn legal-status Critical Current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

Ink-erasing compsn. is based on an S-contg. acid deriv. esp. Na sulphite in a water-soluble binder which is water-proof on drying, esp. a polyacrylate and/or styene copolymer, as in DT2616259. A low mol. wt. alcohol, pref. ethanol is now added so that the ratio H2O: alcohol is 1:1. Drying and the quality of the new writing surface are improved.

Description

Hannover, den 28.2.1978 re-p 76/5aHanover, February 28, 1978 re-p 76 / 5a

Das Hauptpatent (Patentanmeldung P 26 16 259.4) betrifft ein Tinterikorrekturmittel, das mittels Reduktion die Tinte auf Basis schwefligsaurer Salze, insbesondere Natriumsulfit entfärbt. Die Erfindung nach dem Hauptpatent ist gekennzeichnet durch einen Anteil an wasserlöslichem, wasserfest auftrocknendem Bindemittel wie saurer, alkalisch gelöster Polyacrylate und/oder Styrolcopolymerisate. The main patent (patent application P 26 16 259.4) relates to a tinter correction means that by means of reduction Ink based on sulphurous acid salts, especially sodium sulphite, decolorizes. The invention according to the main patent is characterized by a proportion of water-soluble, water-resistant drying binders such as acidic, alkaline dissolved polyacrylates and / or styrene copolymers.

Es hat sich herausgestellt, daß das Auftrocknen der auf diese Weise reduzierten, also entfärbten Schriftstellen und damit deren wiederholte Überschreibbarkeit erheblich beschleunigt werden kann, wenn man dem Tintenentfärbungsmittel zusätzlich niedrige Alkohole zusetzt in einem Mengenverhältnis Wasser:Alkohol von 1:1. Vorzugsweise verwendet man hierzu Äthylalkohol.It has been found that the drying up of the scriptures reduced in this way, that is to say discolored and thus the repeated overwritability thereof can be greatly accelerated by using the ink decolorizing agent additional lower alcohols are added in a ratio of water: alcohol of 1: 1. Preferably one uses ethyl alcohol for this.

An Hand der folgenden Beispiele sei die Erfindung näher erläutert:The invention is illustrated in greater detail by means of the following examples explained:

Beispiel 1:Example 1:

2,5 Teile Natriumsulfit werden in 30 Teilen destilliertem Wasser gelöst und mit einer Mischung von 2 Teilen Diäthyläthanolamin und 20 Teilen Äthanol verrührt. Unter weiterem Rühren wird ein Gemisch von 15 Teilen einer wässerigen Polyacrylatdispersion mit 7,5 Teilen destilliertem Wasser und 20 Teilen Äthylalkohol sowie 3 Teilen einer 2%igen wässerigen Lösung hochmolekularer Methylcellulose hinzugefügt.2.5 parts of sodium sulfite are distilled in 30 parts Dissolved water and stirred with a mixture of 2 parts of diethylethanolamine and 20 parts of ethanol. Under Further stirring is a mixture of 15 parts of an aqueous polyacrylate dispersion with 7.5 parts distilled water and 20 parts of ethyl alcohol and 3 parts of a 2% aqueous solution of high molecular weight Methyl cellulose added.

Aus einem geeigneten Poren- oder Faserschreiber dünn aufgetragen löscht diese Flüssigkeit königsblaue Tintenschrift augenblicklich. Nach einer halben bis ganzen Minute kann die radierte Stelle mit der gleichen Tinte von neuem beschrieben werden.Applied thinly from a suitable pore or fiber pen, this liquid erases royal blue ink writing instantly. After half a minute to a full minute, the erased area can be done with the same ink to be rewritten.

Beispiel 2:Example 2:

Eine Lösung von 2,5 Teilen Formaldehydnatriumsulfoxylat in 35 Teilen destilliertem Wasser wird mit einer Lösung von 2 Teilen Diäthyläthanolamin in 20 Teilen Äthanol gemischt. Eine zuvor hergestellte Mischung von 14 Teilen einer handelsüblichen wässerigen Polyacrylatdispersion mit 8,5 Teilen destilliertem Wasser und 15 Teilen Äthanol sowie 3 Teilen einer 2%igen wässerigen Methylcelluloselösung wird unter Rühren langsam hinzugegeben.A solution of 2.5 parts of sodium formaldehyde sulfoxylate in 35 parts of distilled water is treated with a solution of 2 parts of diethylethanolamine in 20 parts of ethanol mixed. A previously prepared mixture of 14 parts of a commercially available aqueous polyacrylate dispersion with 8.5 parts of distilled water and 15 parts of ethanol and 3 parts of a 2% aqueous methyl cellulose solution is added slowly with stirring.

Beispiel 3:Example 3:

Eine Lösung von 2,5 Teilen Natriumsulfit in 30 Teilen Wasser wird mit einer Lösung von 2 Teilen Diäthyläthanolamin in 20 Teilen Isopropanol vermischt. Dann wird ein Gemisch von 12 Teilen einer alkolischen Polyacrylatlösung mit 20 Teilen Äthanol und 13,5 Teilen einer 0,45%igen wässerigen Methylcelluloselösung unter ständigem Rühren hinzugefügt. Die Anwendung erfolgt wie unter Beispiel 1.A solution of 2.5 parts of sodium sulfite in 30 parts Water is mixed with a solution of 2 parts of diethylethanolamine in 20 parts of isopropanol. Then it will be a mixture of 12 parts of an alcoholic polyacrylate solution with 20 parts of ethanol and 13.5 parts of a 0.45% strength aqueous methyl cellulose solution added with constant stirring. The application is carried out as under Example 1.

9098Λ2/02059098Λ2 / 0205

Claims (2)

Patentansprüche Nunmehr selbständige PatentanmeldungClaims Now independent patent application 1. Mittels Reduktion tiritenentfärbendes Mittel auf Basis schwefligsaurer Salze, insbesondere Natriumsulfat, wobei dieses Reduktionsmittel mit einem wasserlöslichen und wasserfest auftrocknendem Bindemittel kombiniert ist, insbesondere alkalisch gelöste Polyacrylate und/oder Styrolcopolymerisate nach Hauptpatent .... (Patentanmeldung P 26 16 259), dadurch gekennzeichnet,1. By means of a reduction of tirite decolorizing agent based on sulphurous acid salts, in particular sodium sulphate, this reducing agent with a water-soluble and water-resistant drying binder is combined, in particular alkali-dissolved polyacrylates and / or styrene copolymers according to the main patent .... (patent application P 26 16 259), characterized in that, daß dem Tintenentfärbungsmittel zusätzlich niedrige Alkohole zugesetzt sind, so daß das Mengenverhältnis Wasser:Alkohol etwa 1:1 ist.that lower alcohols are additionally added to the ink decolorizing agent, so that the quantity ratio Water: alcohol is about 1: 1. 2. Mittels Reduktion tintenentfärbendes Mittel nach Anspruch 1,2. By means of reduction, ink-decolorizing agent after Claim 1, dadurch gekennzeichnet,characterized, daß als Zusatz Äthylalkohol verwendet wird.that ethyl alcohol is used as an additive. 909842/0205909842/0205
DE19782815068 1978-04-07 1978-04-07 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 Withdrawn DE2815068A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782815068 DE2815068A1 (en) 1978-04-07 1978-04-07 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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782815068 DE2815068A1 (en) 1978-04-07 1978-04-07 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

Publications (1)

Publication Number Publication Date
DE2815068A1 true DE2815068A1 (en) 1979-10-18

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DE19782815068 Withdrawn DE2815068A1 (en) 1978-04-07 1978-04-07 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

Country Status (1)

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DE (1) DE2815068A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863989A (en) * 1986-06-04 1989-09-05 Seitetsu Kagaku Co., Ltd. Water-absorbent resin composition
WO1992007039A1 (en) * 1990-10-11 1992-04-30 Tipp-Ex Gmbh & Co. Kg Corrector fluid with aqueous suspension medium capable of preventing bleeding of the ink

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216951A1 (en) * 1972-04-08 1973-10-31 Kreuzer Werk Gmbh EXTINCTION LIQUID FOR INK
DE2312594A1 (en) * 1973-03-14 1975-03-20 Kreuzer Werk Gmbh Sulphite-bleach based ink erasing liq. - contg. cpd. forming impregnating coating to prevent reoxidn.
DE2616259A1 (en) * 1976-04-13 1977-10-27 Pelikan Werke Wagner Guenther Ink-correcting fluids contg. sulphite and water-resistant binder - allowing re-application of the same ink
DE2640724A1 (en) * 1976-09-10 1978-03-16 Ulrich Kohlenbach Liq. ink eradicator based on alkali or ammonium sulphite soln. - allowing use of same ink over corrections

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216951A1 (en) * 1972-04-08 1973-10-31 Kreuzer Werk Gmbh EXTINCTION LIQUID FOR INK
DE2312594A1 (en) * 1973-03-14 1975-03-20 Kreuzer Werk Gmbh Sulphite-bleach based ink erasing liq. - contg. cpd. forming impregnating coating to prevent reoxidn.
DE2616259A1 (en) * 1976-04-13 1977-10-27 Pelikan Werke Wagner Guenther Ink-correcting fluids contg. sulphite and water-resistant binder - allowing re-application of the same ink
DE2640724A1 (en) * 1976-09-10 1978-03-16 Ulrich Kohlenbach Liq. ink eradicator based on alkali or ammonium sulphite soln. - allowing use of same ink over corrections

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863989A (en) * 1986-06-04 1989-09-05 Seitetsu Kagaku Co., Ltd. Water-absorbent resin composition
WO1992007039A1 (en) * 1990-10-11 1992-04-30 Tipp-Ex Gmbh & Co. Kg Corrector fluid with aqueous suspension medium capable of preventing bleeding of the ink

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