Phan Law Group PLLC
Quaternary carboxylate compositions for extracting C1 to C4 carboxylic acids from aqueous streams
This invention relates to solvents for extracting C1 to C4 carboxylic acids from aqueous streams. More specifically, the extraction solvents include one or more salts composed of a tetraalkylphosphonium cation and a carboxylate anion. The extraction solvents may further include one or more non-ionic liquid organic solvents as an enhancer. The extraction solvents are useful for extracting aqueous mixtures containing one or more lower carboxylic acids, such as monocarboxylic acids, alkoxycarboxylic acids, and halogen-containing carboxylic acids.
Eastman Chemical Company
Y B C C C C
Y02P B01D C07C C07C C07F C07F
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Jingyi Robert Thomas Scott Donald Christopher Chester Wayne Fei
Liu Hembre Barnicki Hardacre Sink Qi