Polymeric viscosity index improver and oil composition comprising the same
Patent
·
OSTI ID:6337285
This patent describes a lubricating oil composition comprising a triblock copolymer containing terminal hydrogenated polyisoprene blocks and a central polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units.
- Assignee:
- Shell Oil Co., Houston, TX
- Patent Number(s):
- US 4788361
- OSTI ID:
- 6337285
- Country of Publication:
- United States
- Language:
- English
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