Hydroxycarboxylic acid/Unsaturated aromatic hydrocarbon resin useful as recording material
US4929710A · kind A · utility
10Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1987 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Oct 7, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C65/105
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Hydroxycarboxylic acid derivatives of the formula ##STR1## are particularly suitable for use as color developers in recording materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.