Ethylene polymer useful as a lubricating oil viscosity modifier
US4575574A · kind A · utility
25Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Dec 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2205/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ethylene ter- or tetrapolymer useful as a viscosity modifier and a process for preparing the polymer. The polymer comprises ethylene, an alpha-olefin, a non-conjugated diene and, optionally, a cationically polymerizable monoolefin. The polymerization catalyst comprises a Ziegler catalyst in conjunction with a cationic polymerization catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.