JPS5626955A - Fluoran compound, production thereof and copying paper employing the same - Google Patents
Fluoran compound, production thereof and copying paper employing the sameInfo
- Publication number
- JPS5626955A JPS5626955A JP10207679A JP10207679A JPS5626955A JP S5626955 A JPS5626955 A JP S5626955A JP 10207679 A JP10207679 A JP 10207679A JP 10207679 A JP10207679 A JP 10207679A JP S5626955 A JPS5626955 A JP S5626955A
- Authority
- JP
- Japan
- Prior art keywords
- copying paper
- compound
- formula
- production
- same
- 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
NEW MATERIAL:Fluoran compounds of formula I (wherein R1, R2 are 1W3C alkyl, cycloalkyl, benzyl, phenyl, methyl-substd. phenyl; R3 is H, chlorine, 1W4C alkyl; n is 1W3; R4 is H, methyl; ring A is benzene ring, naphthalene ring).
USE: Pressure-sensitive or heat-sensitive copying paper (Said fluoran cpd. per se are colorless. When they are contacted with an acidic substance, they develops a dark black color. They are an electron-donative color coupler which excels in light resistance and solubility in an org. solvent)
PREPARATION: A compound of formula II is reacted with a compound of formula III in the presence of a dehydrating-condensing agent.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10207679A JPS5626955A (en) | 1979-08-09 | 1979-08-09 | Fluoran compound, production thereof and copying paper employing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10207679A JPS5626955A (en) | 1979-08-09 | 1979-08-09 | Fluoran compound, production thereof and copying paper employing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5626955A true JPS5626955A (en) | 1981-03-16 |
JPS6261616B2 JPS6261616B2 (en) | 1987-12-22 |
Family
ID=14317672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10207679A Granted JPS5626955A (en) | 1979-08-09 | 1979-08-09 | Fluoran compound, production thereof and copying paper employing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5626955A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4862506A (en) * | 1971-12-04 | 1973-08-31 |
-
1979
- 1979-08-09 JP JP10207679A patent/JPS5626955A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4862506A (en) * | 1971-12-04 | 1973-08-31 |
Also Published As
Publication number | Publication date |
---|---|
JPS6261616B2 (en) | 1987-12-22 |
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