Hybrid electric transmission fluid
US8400030B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2012 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Jun 11, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/7072
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dispersant additive composition, a lubricant composition containing the dispersant additive, a transmission containing the dispersant additive, and a method of providing a versatile lubricating fluid. The dispersant includes a reaction product of a hydrocarbyl substituted carboxylic acid or anhydride and an amine. The reaction product has a nitrogen content up to 10,000 ppm by weight, and a boron plus phosphorus to nitrogen ((B+P)/N) weight ratio of from 0:1 to about 0.8:1. The dispersant additive composition is effective to provide an electrical conductivity to a lubricant composition containing the dispersant additive composition and a metal detergent of less than about 1700 pS/m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.