Lubricating oil composition, method for defoaming lubricating oil, and defoaming agent composition
US10731098B2 · kind B2 · utility
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3References
16Claims
0Family size
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Key dates
| Filing date | Aug 19, 2016 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jan 15, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A lubricating oil composition including: a lubricant base oil; (A) a first defoaming agent obtainable by a process, the process including the step of: polymerizing (b) at least one defoaming agent monomer in (a) a polymerization solvent under coexistence of (c) a polymer soluble in the polymerization solvent; and (B) a second defoaming agent being a silicone defoaming agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.