Lubricating composition comprising poly (isobutylene) /poly (vinyl aromatic) block copolymer
US9428709B2 · kind B2 · utility
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8References
13Claims
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Key dates
| Filing date | May 21, 2012 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Jun 18, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a lubricating composition containing an oil of lubricating viscosity and a block copolymer of a poly(olefin) block, such as poly(isobutylene) (PIB) and a polyvinyl aromatic) block, such as poly(styrene), wherein the copolymer is optionally functionalized or grafted. The invention further provides a method of using the block copolymer to control deposits in a lubricating oil composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.