Processes for the preparation of mixed squaraine compositions
US4607124A · kind A · utility
10Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1985 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | Oct 30, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0698
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved process for the preparation of mixed squaraine compositions which comprises reacting squaric acid, an aromatic amine, and a fluoroaniline, in the presence of an aliphatic alcohol, and an optional azeotropic substance. Also disclosed are mixed squaraine composition products of the following formulas: ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.