C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/102, 253/79
C10M 137/10 (2006.01) B01D 37/03 (2006.01) C08J 3/09 (2006.01) C10M 149/06 (2006.01) C10M 161/00 (2006.01)
Patent
CA 1243999
ABSTRACT OF THE DISCLOSURE Processes for the manufacture of substantially haze free lubricating oil additives such as the zinc salts of dihydrocarbyldithiophosphoric acid and calcium phenate comprising the addition of an effective amount of an acrylamide polymer as a water-in-oil emulsion after the neutralization of an oil solution of the oil soluble moiety of said additive such as the neutralization of a dihydrocarbyldithiophosphoric acid by zinc oxide whereby the resulting colloidal by-products, untreated raw materials and suspended impurities are more susceptible to subsequent separation processes, such as centrifugation and filtration.
496995
Collett Terry L.
Finch Terence F.
Shaw Gerard
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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