Viscosity index improver concentrates

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Solid hydrocarbon polymer

Reexamination Certificate

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C585S010000, C585S012000

Reexamination Certificate

active

07018962

ABSTRACT:
A viscosity index (VI) improver concentrate containing at least one VI improver, from 0 to about 5 mass % of lubricating oil flow improver (LOFI) and diluent oil, wherein the diluent oil has a kv100of at least about 3.0 cSt and a CCS at −35° C. of less than 3700 cPs, and wherein at least about 98 mass % of the concentrate is composed of VI improver, LOFI and diluent oil.

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patent: WO02/10276 (2002-02-01), None
patent: WO04/033606 (2004-04-01), None

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