Lubricating compositions containing reduced levels of phosphorus
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United States of America Patent
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May 5, 1992
Issued Date -
N/A
app pub date -
Nov 17, 1989
filing date -
Nov 24, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Lubricating compositions containing up to about 0.015% by weight of phosphorus. These compositions comprise oil, metal salts of phosphorus-containing acids having at least one secondary hydrocarbon substituent, a boron-containing acylated nitrogen-containing compound and optionally an acylated nitrogen-containing compound and/or a zinc salt of a carboxylic acid. The lubricating oil compositions are useful in various application including engine oils, power transmission fluids, including automatic transmission fluids, functional fluids and the like.
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