Water compatible hydraulic fluids
US7932220B2 · kind B2 · utility
1Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2007 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Sep 16, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S166/902
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition for use in an oil chamber of a tool includes a hydraulic oil; and a surfactant, wherein the surfactant is present at an amount sufficient to form micelles in the hydraulic oil. The composition may further include an amphiphilic copolymer. A method includes providing a hydraulic fluid composition comprising a hydraulic oil and a surfactant capable of forming micelles in the hydraulic oil; and filling a hydraulic chamber in the tool with the hydraulic fluid composition. The hydraulic fluid composition may further include an amphiphilic copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.