Phosphorous amine lubricant additives
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United States of America Patent
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Mar 16, 1993
Issued Date -
N/A
app pub date -
Jul 10, 1992
filing date -
May 18, 1990
priority date (Note) -
Expired
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Abstract
Lubricant additives are produced by reacting an alkoxylated amine with phosphorous acid. The additives preferably also contain a boron moiety which is reacted with the phosphorous acid and amine, preferably in a one step reaction. More preferably, a mono-functional alcohol or a long-chain aliphatic carboxylic acid is added to this mixture. The additives are particularly useful in metal working oils and particularly as extreme pressure additives to replace the currently used chlorinated paraffin additives.
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