Blend comprising group II and group IV basestocks

Details Blend comprising group II and group IV basestocks Blend comprising group II and group IV basestocks

2006-08-07

2010-11-23

Griffin, Walter D (Department: 1797)

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

Lubricants or separants for moving solid surfaces and...

C508S591000, C585S250000

Reexamination Certificate

active

07838471

ABSTRACT:
The invention relates to compositions comprising a blend of Group II basestocks and low volatility, low viscosity PAO basestocks. The blend is particularly useful for preparing finished lubricants that meet or even exceed the criteria for SAE Grade 0W multi-grade engine oils. The combination of these low volatility, low viscosity PAOs with Group II basestocks provide, in embodiments, the necessary performance criteria in automatic transmission fluids, automotive or industrial gear oils, hydraulic fluids, or any other high performance lubricant requiring a combination of excellent low fluidity and low volatility.

REFERENCES:
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patent: 5789355 (1998-08-01), Adams et al.
patent: 6303548 (2001-10-01), Gao
patent: 6824671 (2004-11-01), Goze et al.
patent: 6949688 (2005-09-01), Goze et al.
patent: 2001/0007851 (2001-07-01), Gao
patent: 2003/0171223 (2003-09-01), Winemiller et al.
patent: 2004/0033908 (2004-02-01), Deckman et al.
patent: WO 02/092729 (2002-11-01), None

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