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U.S. Department of Energy
Office of Scientific and Technical Information

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