Oil dewaxing method
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United States of America Patent
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Aug 20, 1996
Grant Date -
N/A
app pub date -
May 25, 1995
filing date -
May 25, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention decloses a method for dewaxing a hydrocarbon oil which comprises adding an oil-soluble poly C.sub.18 -C.sub.22 alkylmethacrylate having a molecular weight of from about 10,000 to about 2,000,000 daltons to a hydrocarbon oil containing wax; cooling the oil to allow wax crystals to form, separating the wax crystals from the oil and recovering a dewaxed oil.
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