Modified acrylamide polymers used as scale inhibitors
US4801388A · kind A · utility
74Cited by
9References
9Claims
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Key dates
| Filing date | Nov 25, 1986 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Nov 25, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Water supplies are treated to inhibit the formation of scale deposits of alkaline earth phosphates, phosphonates, sulphates and carbonates using various hydrocarbon polymers which contain an amido functionality and which have been prepared by post-polymerization derivatization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.