Recording liquid
US5599386A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | May 4, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A recording liquid comprising an aqueous medium and at least one selected from the compounds whose free acid form is represented by the formula {1}: ##STR1## wherein, R.sup.1, R.sup.2 and R.sup.3 each independently represent a substituted or unsubstituted C.sub.1-9 alkyl group, a C.sub.1-9 alkoxy group, a halogen, hydrogen, a hydroxyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted sulfamoyl group, a substituted or unsubstituted amino group, a nitro group, a sulfonic ester group, a C.sub.1-9 alkyl- or C.sub.6-15 aryl-sulfonyl group, a COOH group or a carboxylic ester group; PA1 m is a number of 0, 1 or 2; and PA1 R.sup.4, R.sup.5 and R.sup.6 each independently represent hydrogen, a C.sub.1-18 alkyl group, a C.sub.2-18 alkenyl group, an aryl group, an aralkyl group, an alicyclic group or a heterocyclic group, any of which groups except hydrogen may have a substituent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.