Ashless dispersants their preparation and their use
US5612296A · kind A · utility
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4References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 1, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Dec 1, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Ashless dispersants are formed using polymers of propylene characterized in that they are liquid substantially linear polymers, they have stereo-irregularity in the polymer chain, at least 60 mol percent of the polymer has a terminal vinylidene group and, optionally, the polymer contains up to 25 mol percent of ethylene or a C.sub.4 to C.sub.10 monoolefin polymerized into the polymer chains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.