Method for control of scale and inhibition of corrosion in cooling water systems
US4913822A · kind A · utility
47Cited by
7References
7Claims
0Family size
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Key dates
| Filing date | Jan 12, 1989 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Jan 12, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for inhibiting scale deposition and the corrosion of metal surfaces in a cooling water system. It comprises a water soluble copolymer consisting of moities of acrylic acid and monohydroxylated alkyl allyl ether, a phosphonate compound, a water soluble zinc salt and, optionally, an azole compound, and/or a water soluble molybdate salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.