Biodegradable lubricant composition
US8987177B2 · kind B2 · utility
1Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | May 6, 2010 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | May 6, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A biodegradable lubricating oil composition includes (A) an ester being obtained by reacting a saturated aliphatic carboxylic acid, a straight-chain aliphatic dicarboxylic acid and a polyhydric alcohol together, the ester having a kinematic viscosity in a range from 400 mm2/s to 1000 mm2/s at 40 degrees C. and an acid value of 0.5 mgKOH/g or less; (B) an ester being obtained by reacting a straight-chain saturated aliphatic carboxylic acid with a polyhydric alcohol, the ester having an acid value of 0.5 mgKOH/g or less; and (C) a phosphate amine salt being obtained by reacting an acidic phosphate with an alkylamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.