Chromogenic composition for use in pressure-sensitive record material
US5478380A · kind A · utility
1Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1993 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Oct 14, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/1655
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A chromogenic composition for use in pressure-sensitive record material comprises chromogenic material in an ester vehicle. The ester may be mono-, di- or tri-functional and is of a non-aromatic mono-carboxylic acid having a straight or branched hydrocarbon chain with at least three carbon atoms in the chain. Suitable esters include fatty acid esters such as cocoates, isostearates, myristates, and palmitates and wax esters such as alkyl-branched esters of an aliphatic carboxylic acid and an aliphatic alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.