Lubricant air release rates
US8389451B2 · kind B2 · utility
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22References
2Claims
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Key dates
| Filing date | Jul 20, 2007 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Sep 30, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2020/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The air release rate of lubricating compositions is significantly enhanced when the composition is formulated with one or more vinyl aromatic-olefin block copolymers that forms a micelle-like structure in the oil. Compositions having the specified copolymers retain less than about 2.5% air after 1 min. at 50° C. when tested by ASTM D 3427.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.