JPS5527313A - Decolorizable ink composition - Google Patents
Decolorizable ink compositionInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5399261A (en) * | 1977-02-10 | 1978-08-30 | Fukai Kougiyou Kk | Joint production |
-
1978
- 1978-08-15 JP JP9926078A patent/JPS5527313A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5399261A (en) * | 1977-02-10 | 1978-08-30 | Fukai Kougiyou Kk | Joint production |
Cited By (3)
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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