Polymers for chemical treatment and precipitation of soluble metal cyanide and oxoanion compounds from waste water
US6114484A · kind A · utility
3Cited by
10References
4Claims
0Family size
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Key dates
| Filing date | Nov 16, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Nov 16, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the removal of metal cyanides or oxoanions from aqueous streams such as waste water streams with compounds containing 1,4-diazabicyclo[2.2.2]octane. Preferred compounds are polymers formed by free radical polymerization of N-4-vinyl benzyl-N.sup.1 -1,4-diazabicyclo[2.2.2]octane dichloride (VBBD) such as copolymers poly (VBBD/acrylamide) and poly (VBBD/dimethyl amino ethyl acrylate benzyl chloride quaternary salt. Poly(1,4-dimethylbenzyl-1,4-diazabicyclo[2.2.2]octane dichloride) for the same purposes is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.