Two-stroke engine oils
US5475171A · kind A · utility
4Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Aug 4, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a two-stroke engine oil which comprises polybutene base oils which are either very low in or are substantially free of n-butenes in the polymer backbone. The absence of n-butenes in the polybutenes significantly reduces smoke emission in exhaust gases generated by the use of the engine oil. Polybutenes such as ULTRAVIS.RTM. which are substantially free of chlorine and have a high degree of terminal unsaturation are particularly preferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.