Invert emulsifiers for oil-base drilling muds
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United States of America Patent
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Apr 14, 1987
Grant Date -
N/A
app pub date -
Oct 3, 1985
filing date -
Oct 3, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is disclosed for preparation of invert emulsifiers useful for oil-base drilling muds. The emulsifiers are prepared by reacting at least one tall oil fatty acid with acrylic acid, maleic anhydride or fumaric acid. The product of this reaction is substantially reacted with diethylene triamine, and at least one tall oil fatty acid to give the invert emulsifier.
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