Cationic adsorption agent
US4424284A · kind A · utility
4Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1981 |
| Grant date | Jan 3, 1984 |
| Priority date | — |
| Expiry date | Oct 19, 2001 |
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 PA1 (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 PA1 (b) an aminoplast precondensate which does not contain amino groups. The novel absorption 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.