Method for retarding corrosion in petroleum processing operation using N-methyl pyrrolidone
US4396492A · kind A · utility
6Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1981 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Nov 3, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention is directed to a method of reducing the amount of corrosion resulting in a petroleum process operation wherein N-methyl pyrrolidone is utilized as one of the components by adding an effective corrosion inhibiting amount of an ester additive formed from a polycarboxylic acid and glycol or glycerol, preferably a dimer acid of linoleic acid and diethylene glycol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.