Environmentally improved acid corrosion inhibitor
US5854180A · kind A · utility
15Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Corrosion is inhibited in hydrochloric acid solutions used to acidize wells, by adding to the solutions a corrosion inhibiting composition comprising cinnamaldehyde or a substituted cinnamaldehyde together with a reaction product of a C.sub.3-6 ketone such as acetophenone, thiourea or a related compound, formaldehyde and hydrochloric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.