Aqueous corrosion inhibitor formulations
US5702631A · kind A · utility
13Cited by
4References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K5/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides aqueous concentrated corrosion inhibition formulations suitable for addition to depleted antifreeze/coolant compositions or corrosive water that use a mixture of polymeric polycarboxylates, azoles, nitrate salts, phosphates, stabilized silicates and transition metal compounds which reduces the corrosion rate and is effective at relatively low concentrations. The formulations are particularly suitable for automotive applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.