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US 7,439,212 B2Granted
Soybean oil based metalworking fluids
AssigneeUnited Soybean Board
InventorsJames P. King, Neil Canter
Life of this patent
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Abstract
The inventive composition comprises compatible combinations of vegetable oils and polar non-chlorine phosphorous-based extreme pressure additives, the composition being either (a) a working strength straight oil, (b) a soluble oil concentrate dilutable to a working strength soluble oil, the composition when at working strength effectively lubricating metal parts during high performance metalworking, and providing environmental and safety advantages.
Claims40
A composition comprising:
- at least about 5% a soybean oil, and
- from about 3% to about 15% phosphorous-based polar non-chlorine extreme pressure additive,
- the components being compatible, and the composition having a boiling point of at least about 200° C. and effectively lubricating metal parts and imparting a load wear index of at least about 98 in a four ball test and a weld point of at least about 315 kg in a four ball test,
- wherein the phosphorous-based polar non-chlorine extreme pressure additive is soluble in the soybean oil.
1 more element
Dependencies are inferred from the claim text.