Method of suppressing mist formation from oil-containing functional fluids
AssigneeExxon Chemical Patents Inc.
InventorsHarold E. Bachman, Chung K. Shih
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Abstract
There is disclosed a method of suppressing misting or spatting from an oil-containing functional fluid, such as a chain saw lubricant, by blending with the functional fluid a mist suppressing effective amount of a copolymer of a C.sub.3 or C.sub.4 alpha-monoolefin and at least one other alpha-monoolefin having from 5 to about 20 carbon atoms, said copolymer having a viscosity average molecular weight of from about 500,000 to about 10 million.
Claims20
In a process for suppressing mist formation from a single use lubricating oil, the improvement which comprises:
- admixing with the lubricating oil from about 0.0001 to 0.04 weight percent of a copolymer prepared by copolymerizing at least one alpha-monoolefin selected from propylene and butene-1 with at least one additional alpha-monoolefin having from 5 to about 20 carbon atoms, said copolymer having a viscosity average molecular weight of from about 100,000 to about 20 million.
In a process for lubricating a chain saw with an oil of lubricating viscosity, the improvement which comprises:
- admixing with the oil of lubricating viscosity from about 0.0001 to 0.04 weight percent of a copolymer prepared by copolymerizing at least one alpha-monoolefin selected from propylene and butene-1 with at least one additional alpha-monoolefin having from 5 to about 20 carbon atoms, said copolymer having a viscosity average molecular weight of from about 100,000 to about 20 million.
A single use lubricating oil which comprises:
- (a) a major amount of an oil lubricating viscosity, and
- (b) from about 0.0001 to 0.04 weight percent of a copolymer prepared by copolymerizing at least one alpha-monoolefin selected from propylene and butene-1 with at least one additional alpha-monoolefin having from 5 to about 20 carbon atoms, said copolymer having a viscosity average molecular weight of from about 100,000 to about 20 million.
Dependencies are inferred from the claim text.