Antifoaming agents for lubricating oils (law455)
US5766513A · kind A · utility
20Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Sep 10, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2229/051
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A combination of a fluorosilicone antifoamant and a polyacrylate antifoamant have been found to be effective in reducing foaming of lubricating oils at both low and high temperatures and without degrading the air release time to the extent that would occur with a conventional silicone antifoamant. Neither type of antifoamant is effective in reducing foaming at both low and high temperatures by itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.