Ether diphosphonate scale inhibitors
US5772893A · kind A · utility
4Cited by
11References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Aug 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention is a method for the prevention of scale formation on metal or other surfaces in contact with scale-forming industrial water with an effective scale-inhibiting amount of an ether 1,1-diphosphonate of the general formula: ##STR1## The invention is also a method for the prevention of corrosion on metal surfaces in contact with corrosive industrial water with an effective corrosion-inhibiting amount of an ether 1,1-diphosphonate of the same general formula. A preferred ether 1, 1-diphosphonate is 1,1, diphosphono-4,7-dioxaoctane for both methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.