Viscosity index improver for lubricating oils

Details Viscosity index improver for lubricating oils Viscosity index improver for lubricating oils

2007-03-07

2009-12-01

Caldarola, Glenn A (Department: 1797)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Solid hydrocarbon polymer

C508S110000

Reexamination Certificate

active

07625851

ABSTRACT:
A polymeric viscosity index improver that includes a hydrogenated block copolymer having at least one controlled distribution block copolymer having a minimized crystallinity is provided. An oil composition including at least a base oil and the aforementioned viscosity index improver is also provided. A polymeric concentrate including the aforementioned viscosity index improver is further provided.

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