Two-cycle engine oil composition
US4994196A · kind A · utility
14Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Oct 13, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A two-cycle engine oil composition comprising: PA0 (I) 100 parts by weight of a base oil composed of (A) 20 to 80% by weight of a copolymer of an .alpha.-olefin with an ester of a dicarboxylic acid, said copolymer having a kinematic viscosity of 20 to 50 cSt at 100.degree. C., and (B) 80 to 20% by weight of an ester of pentaerythritol with a fatty acid, said ester having a kinematic viscosity of 4 to 20 cSt at 100.degree. C., and PA0 (II) 0.4 to 6 parts by weight of calcium phenate incorporated as an indispensable ingredient in the base oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.