Microcapsules of pressure-sensitive copying paper
US5122498A · kind A · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1990 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Aug 8, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/1655
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dye solvent useful as a material for microcapsules necessary for the manufacture of pressure-sensitive manifold paper. This solvent essentially consists of a hydroaromatic compound for pressure-sensitive manifold paper. The compound is a polycyclic aromatic compound with three or more aromatic rings, some of which rings have been hydrogenated and exhibits solvency, particularly, for a black pigment and a blue pigment of leuco dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.