Eastman Chemical Company

Jingyi Liu

Scott Donald Barnicki

Robert Thomas Hembre

Chester Wayne Sink

Christopher Hardacre

Silu Wang

David William Rooney

Fei Qi

This invention relates to solvents for extracting Cto Ccarboxylic acids from aqueous streams. More specifically, the extraction solvents include one or more salts composed of a phosphonium cation and an arylcarboxylate 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.

Quaternary arylcarboxylate compositions for extracting C1 to C4 carboxylic acids from aqueous streams

This invention relates to solvents for extracting Cto Ccarboxylic 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.

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Shantou, China

Jingyi Liu