Phenate detergent preparation
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United States of America Patent
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Jan 24, 2017
Grant Date -
Dec 18, 2014
app pub date -
Jun 13, 2013
filing date -
Jun 13, 2012
priority date (Note) -
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Abstract
A sulphurised calcium phenate detergent is made by (i) reacting hydrogenated distlled CNSL with a calcium salt and sulphur in the presence of a promoter and process solvent; (ii) reacting the product of (i) with additional calcium salt and promoter, and with a co-surfactant, and then carbonating; and optionally (iii) further carbonating the reaction mixture to obtain overbased sulphurised calcium phenate.
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