Water treatment polymers and methods of use thereof
US4717499A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1987 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Mar 26, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/173
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A water soluble polymer composition is disclosed. The polymer has repeat units characterized by the structural formulae: ##STR1## wherein R.sub.1 is H or lower alkyl (C.sub.1 -C.sub.3); R.sub.2 is OH, OM, or NH.sub.2 ; M is a water soluble cation; R.sub.3 is a hydroxy substituted alkyl or alkylene radical having from 1 to about 6 carbon atoms or a non-substituted alkyl or alkylene radical having from 1 to 6 carbon atoms; X is an anionic radical; Z is H or hydrogens or a water soluble cation or cations which together counterbalance the valence of X, and a is 0 or 1. The copolymer is effective in inhibiting the precipitation of certain scale forming salts, and also acts to inhibit corrosion of metal parts in contact with water systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.