| 摘要 |
A process for inhibiting a liquid hydrocarbon from foaming involving: (a) providing a liquid hydrocarbon; (b) providing a defoamer additive containing: (i) an ester corresponding to formula (I) <?in-line-formulae description="In-line Formulae" end="lead"?>R<SUP>1</SUP>-COO-R<SUP>2</SUP> (I) <?in-line-formulae description="In-line Formulae" end="tail"?> wherein R<SUP>1 </SUP>and R<SUP>2 </SUP>are, independent of each other, saturated or unsaturated, linear or branched alkyl radicals having from about 6 to 16 carbon atoms, as a defoamer; and (ii) optionally, a co-defoamer selected from the group consisting of a non-alkoxylated ester of a polyol having from about 2 to 6 carbon atoms, and from about 2 to 4 OH groups, a saturated or unsaturated, linear or branched fatty acid having from about 8 to 24 carbon atoms, and mixtures thereof; and (c) adding a foam-inhibiting effective amount of (b) to (a).
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