Deposit control through the use of oligomeric phosphonic acid derivatives
US4201669A · kind A · utility
19Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1978 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Sep 11, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present disclosure is directed to oligomeric phosphonic acid derivatives which possess excellent chlorine resistance and acceptable calcium tolerance and which, at substoichiometric amounts, inhibit the formation of scale in aqueous mediums. Additionally, the oligomers have been found to be quite active as dispersants for particulate matter contained in an aqueous medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.