Lubricant composition comprising a bi-modal side-chain distribution LOFI
US9518244B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2013 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Apr 26, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricant composition is disclosed. The lubricant composition is made up of (a) an API Group III base stock; (b) one or more semi-crystalline viscosity modifier; and (c) one or more LOFIs having a side-chain distribution which satisfies the following requirements: (1) the distribution contains side chains ranging from C8 to C18 with an average carbon number ranging from 12.4 to 14.4; (2) the side chain distribution is bi-modal with a lower portion of the bi-modal distribution made up primarily of C12 and an upper portion of the distribution made up primarily of C16, C18 or combinations thereof; (3) the total mole % of the upper portion of the distribution must be less than that of the lower portion of the distribution; and (4) the amount of C12 on the side chain must be at least 40 mole % of the total side chain distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.