MAGNESIUM SULFONATE SYNTHESIS
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Dec 20, 2017
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Dec 22, 2016
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An overbased magnesium sulfonate detergent is made by (A) preparing a mixture of a sulfonic acid or salt with a magnesium oxide, water, a C1-C5 alkanol, a hydrocarbon solvent, and a combination of a polyisobutene succinic anhydride of molecular weight (Mw) 500 to 1500 g mol−1 and a salicylic acid as first and second promoters; and (B) carbonating the mixture with an acidic gas to form the overbased magnesium sulfonate.
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