Oligobenzylated hydroxycarboxylic acid derivative
US4879368A · kind A · utility
6Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1987 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Oct 2, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3331
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Condensation products of benzyl chlorides and aromatic hydroxycarboxylic acids are suitable for use as color developers in pressure- or heat-sensitive recording materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.