Cationic fluorescent whitening agents
US4433975A · kind A · utility
15Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1982 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Sep 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/927
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cationic fluorescent whitening agents of the formula ##STR1## wherein B is a fluorescent whitening agent containing basic tertiary amino groups, m is the number of basic amino groups, and each of R.sub.1, R.sub.2 and R.sub.3 is alkyl of 1 to 4 carbon atoms which is unsubstituted or substituted by non-chromophoric groups, or is alkenyl of 2 to 4 carbon atoms which is unsubstituted or substituted by non-chromophoric groups. These compounds have good solubility in water and they make it possible to prepare concentrated solutions and can be used for whitening organic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.