Ethylene-based copolymers, lubricating oil compositions containing the same, and methods for making them
US9175240B2 · kind B2 · utility
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Key dates
| Filing date | Oct 12, 2012 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Oct 12, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/68
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided are ethylene-based copolymers, methods of preparing the same, lubricating oil compositions including the same, methods for preparing such lubricating oil compositions, and end uses for such ethylene-based copolymers and lubricating oil compositions. The ethylene-based copolymers may include from about 35 wt. % to about 60 wt. % of units derived from ethylene and at least 1.0 wt. % of one or more alpha-olefin comonomers having 3 to 20 carbon atoms. The ethylene-based copolymers are substantially amorphous and have a polydispersity index of about 2.8 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.