The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2017
Filed:
Dec. 18, 2015
Eastman Chemical Company, Kingsport, TN (US);
Jingyi Liu, Shantou, CN;
Silu Wang, Reading, GB;
Christopher Hardacre, Belfast, GB;
David William Rooney, Lisburn, GB;
Robert Thomas Hembre, Johnson City, TN (US);
Scott Donald Barnicki, Kingsport, TN (US);
Chester Wayne Sink, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
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.