Silicone based lubricant compositions
US8642520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2011 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | May 22, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/56
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions comprising silicone fluids are formulated to provide improved metal-to-metal lubrication. Such Lubricating compositions comprise a major amount of (1) one or more siloxane polymer (“silicone fluids”) selected from dimethyl siloxane polymers (also known as dimethyl silicone) and/or phenylmethyl dimethyl siloxane copolymers (also known as phenyl silicone), and lesser amounts of (2) synthetic and/or bio-based ester co-fluid, and (3) an alkoxylated aliphatic polyamine derivative. Unexpectedly, the compositions show a significant improvement in metal-to-metal lubrication, performing better than either the silicone fluids alone or and a combination of silicone with-ester and or silicone with-alkoxylated aliphatic polyamine combinations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.