Hydrogen sulfide suppression with amine derivative
US4778609A · kind A · utility
9Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Nov 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Functional fluids such as metal working fluids are disclosed which include an oil of lubricating viscosity, a sulfurized organic compound, and an amine derivative. The amine derivative is a hindered imine which is the reaction product obtained from reacting a primary amine connected to a tertiary alkyl group with an aldehyde or aldehyde reaction synthon. The inclusion of the hindered imine within the metal working fluid suppresses the generation of hydrogen sulfide gases during the use of the fluid thus improving the environmental and safety characteristics of the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.