Deposit control through the use of oligomeric phosphonic acid derivatives
US4253969A · kind A · utility
4Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1979 |
| Grant date | Mar 3, 1981 |
| Priority date | — |
| Expiry date | Jul 16, 1999 |
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.