Non-flammable hydraulic fluids
US4596664A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1985 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Jan 16, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Non-flammable hydraulic fluids which are particularly useful for replacing existing hydraulic fluids in hydraulic systems employing acrylonitrile-butadiene rubber and fluoroelastomer seals are disclosed. The non-flammable hydraulic fluids of the present invention comprise a fluorinated chlorotrifluoroethylene oil, a refined naphthenic oil, a phenolic antioxidant, a sulfur corrosion inhibitor, a metal deactivator, and an aliphatic ester. The fluorinated chlorotrifluoroethylene oil is present in an amount of at least about 75% by volume of the hydraulic fluid. In addition to being non-flammable, such hydraulic fluids are compatible with both the seals and brass components which contact the hydraulic fluid in hydraulic systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.