Efficient method of producing lubricant detergent additives
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United States of America Patent
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Dec 6, 1994
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N/A
app pub date -
Sep 3, 1993
filing date -
Sep 3, 1993
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Abstract
A method of preparing a lubricant detergent additive at a significantly enhanced filtration rate comprising the steps of: (a) mixing a neutral calcium sulfonate with sulfur, diluent oil, (C.sub.5 -C.sub.40) alkylphenol, ethylene glycol, and calcium hydroxide to form a mixture; (b) agitating said mixture at a temperature of about 150.degree. C. to about 200.degree. C. for a period of about four hours; (c) bubbling CO.sub.2 into said agitated mixture to provide an intermediate product; and (d) filtering said intermediate product at a rate of about 50 ml per 3 to 6 minutes to provide the lubricant detergent additive.
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