Cationic fluorescent whitening agents
US4263431A · kind A · utility
11Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | May 17, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/629
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to cationic fluorescent whitening agents of the formula ##STR1## wherein A is the radical of a fluorescent whitening agent, Q is the direct bond or a bridge member, R.sub.1 to R.sub.5 are specific substituents and n is 1 or 2. A process for the manufacture of these compounds and a method of whitening organic material which comprises their use are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.