Cationic adsorption agent
US4478724A · kind A · utility
2Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1983 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Aug 4, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G12/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A cationic adsorption agent which is obtained by reaction of PA0 (a) an amino compound which contains at least one amino group and at least one free or methylolated carbamide or thiocarbamide group, or a salt thereof, with PA0 (b) an aminoplast precondensate which does not contain amino groups. The novel adsorption agent is suitable in particular for removing anionic substances, such as acid dyes or reactive dyes, from aqueous solutions, especially from wastewaters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.