Biodegradable synthetic ester base stocks formed from branched o

Details Biodegradable synthetic ester base stocks formed from branched o Biodegradable synthetic ester base stocks formed from branched o

1996-05-21

1998-03-17

Howard, Jacqueline V.

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

Lubricants or separants for moving solid surfaces and...

Organic -co- compound

560263, C10M10538

Patent

active

057286582

ABSTRACT:
A biodegradable lubricant which is prepared from: about 60-99% by weight of at least one biodegradable synthetic ester base stock which comprises the reaction product of: a branched or linear alcohol having the general formula R(OH).sub.n, wherein R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms and n is at least 2; and at least one branched oxo acid having a carbon number in the range between about C.sub.5 to C.sub.10, provided that said branched oxo acid does not include 2-ethylhexanoic acid; wherein the ester base stock exhibits the following properties: at least 60% biodegradation in 28 days as measured by the Modified Sturm test; a pour point of less than -25.degree. C.; and a viscosity of less than 7500 cps at -25.degree. C.; about 1 to 20% by weight lubricant additive package; and about 0 to 20% of a solvent.

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Waal and Kenbeek, "Testing, Application, and Future Development of Environmentally Friendly Ester Base Fluids", Journal of Synthetic Lubrication, vol. 10, No. 1, Apr. 1993, pp. 67-83.

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