JPS5527313A - Decolorizable ink composition - Google Patents

Decolorizable ink composition

Info

Publication number
JPS5527313A
JPS5527313A JP9926078A JP9926078A JPS5527313A JP S5527313 A JPS5527313 A JP S5527313A JP 9926078 A JP9926078 A JP 9926078A JP 9926078 A JP9926078 A JP 9926078A JP S5527313 A JPS5527313 A JP S5527313A
Authority
JP
Japan
Prior art keywords
acid
metal salt
alkali metal
color
base indicator
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
JP9926078A
Other languages
Japanese (ja)
Other versions
JPS575426B2 (en
Inventor
Zenshiro Iijima
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.)
ADOGAA KOGYO KK
Adger Kogyo Co Ltd
Original Assignee
ADOGAA KOGYO KK
Adger Kogyo Co Ltd
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 ADOGAA KOGYO KK, Adger Kogyo Co Ltd filed Critical ADOGAA KOGYO KK
Priority to JP9926078A priority Critical patent/JPS5527313A/en
Publication of JPS5527313A publication Critical patent/JPS5527313A/en
Publication of JPS575426B2 publication Critical patent/JPS575426B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: A docolorizable ink composition that contains 1-hydroxy-3, 6, 8-purenetrisulfonic alkali metal salt and an acid-base indicator in an alkaline aqeous medium, thus showing clear green color and being decolorized with acid.
CONSTITUTION: In the presence of an alkali, 1-hydroxy-3, 6, 8-pyrenetrisulfonic alkali metal salt in 0.2W20, preferably 0.5W10wt% and an acid-base indicator which develops bule color in basic conditions and yellow in acidic in 0.01W5wt%, preferably 0.05W1.5wt% are dissolved in an aqueous medium so that the color of the system is adjusted to green. The alkali metal salt used is given as the formula (M is Na, K, Li, etc.), develops fluorescent yellow in basic conditions and turns colorless in acidic. The acid-base indicator used is, e.g., bromophenol blue or bromocresol green.
COPYRIGHT: (C)1980,JPO&Japio
JP9926078A 1978-08-15 1978-08-15 Decolorizable ink composition Granted JPS5527313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9926078A JPS5527313A (en) 1978-08-15 1978-08-15 Decolorizable ink composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9926078A JPS5527313A (en) 1978-08-15 1978-08-15 Decolorizable ink composition

Publications (2)

Publication Number Publication Date
JPS5527313A true JPS5527313A (en) 1980-02-27
JPS575426B2 JPS575426B2 (en) 1982-01-30

Family

ID=14242735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9926078A Granted JPS5527313A (en) 1978-08-15 1978-08-15 Decolorizable ink composition

Country Status (1)

Country Link
JP (1) JPS5527313A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS568473A (en) * 1979-06-30 1981-01-28 Adogaa Kogyo Kk Writing tool
JP2012506915A (en) * 2008-07-03 2012-03-22 ボスティック インコーポレイテッド Hot-melt wettability indicating adhesive composition containing an ultraviolet fluorescent agent

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399261A (en) * 1977-02-10 1978-08-30 Fukai Kougiyou Kk Joint production

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399261A (en) * 1977-02-10 1978-08-30 Fukai Kougiyou Kk Joint production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS568473A (en) * 1979-06-30 1981-01-28 Adogaa Kogyo Kk Writing tool
JPS5761787B2 (en) * 1979-06-30 1982-12-25 Adger Kogyo Co Ltd
JP2012506915A (en) * 2008-07-03 2012-03-22 ボスティック インコーポレイテッド Hot-melt wettability indicating adhesive composition containing an ultraviolet fluorescent agent

Also Published As

Publication number Publication date
JPS575426B2 (en) 1982-01-30

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