Derivatized Rhodamine dye and its copolymers
US5998632A · kind A · utility
1Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/56
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are the Rhodamine B esters of hydroxy C.sub.2 -C.sub.6 lower alkyl acrylates. Specifically, the hydroxy lower alkyl radical is a linear hydroxy lower alkyl radical having the hydroxy group attached to the terminal carbon atom. Also shown are copolymers of diallyldimetyl ammonium chloride which contains from 0.01-2 mole percent of these Rhodamine B esters and their use in treating industrial waters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.