Pressure-sensitive or heat-sensitive recording material
US5254522A · kind A · utility
4Cited by
9References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1991 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Mar 26, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/323
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A pressure-sensitive or heat-sensitive recording material essentially comprising in its color reactant system PA1 (A) an aromatic or nitrogen-containing heterocyclic aldehyde, PA1 (B) an organic condensation component containing an activated methylene group or a primary or secondary nitrogen atom, preferably a primary amino group, and PA1 (C) an electrophilic and color-developing component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.