Corrosion inhibitors
US4614600A · kind A · utility
32Cited by
9References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1984 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Oct 31, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/934
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An anti-corrosive composition is disclosed which comprises the condensate of a polyamine such as diethylenetriamine, triethylenetetramine or aminoethylethanol amine with a 21 or 22 carbon fatty polycarboxylic acid or acid anhydride. The composition may additionally include the condensation products of the above polyamines with either tall oil fatty acids or Rosin S. Propargyl alcohol has been found to enhance the anti-corrosive effects of the composition. The compositions are especially useful in well drilling operations where a strong inorganic acid is used to facilitate crude oil flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.