Base fluids
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United States of America Patent
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Jan 13, 1998
Grant Date -
N/A
app pub date -
Mar 5, 1996
filing date -
Sep 14, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A base fluid for hydraulic or metal working fluids comprises the esterification product having a hydroxyl number below 15 and an acid number below 10 of polymerized fatty acids and a monohydric alkoxylated alcohol, selected from (a) straight or branched chain saturated monohydric C.sub.1 -C.sub.24 alcohols, alkoxylated with 2-25 moles of C.sub.2 -C.sub.5 alkylene oxide and (b) alkoxy poly(alkylene) glycol etherified with C.sub.1 -C.sub.4 aliphatic monohydric alcohol and which is alkoxylated with 2-25 moles of C.sub.2 -C.sub.5 alkylene oxide, optionally the alcohol component also comprises (c) a straight or branched chain C.sub.1 -C.sub.24 aliphatic monohydric alcohol. The acid number of the crude ester is preferably reduced by reacting it with a glycidyl ester of a C.sub.5 -C.sub.22 aliphatic monocarboxylic acid, preferably a C.sub.6 -C.sub.12 branched chain, aliphatic monocarboxylic acid.
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