Processes for producing monoammonium adipate and conversion of monoammonium adipate to adipic acid

US8895779B2 · kind B2 · utility

Assignee

• BIOAMBER INC. · US

Inventors

• Olan S. Fruchey · Port Aransas, US
• Leo Ernest Manzer · Wilmington, US
• Dilum Dunuwila · Okemos, US
• Brian T. Keen · Charleston, US
• Brooke A. Albin · Charleston, US
• Nye A. Clinton · Hurricane, US
• Bernard D. Dombek · Charleston, US

Key dates

• Filing date: Apr 14, 2011
• Grant date: Nov 25, 2014
• Expiry date: Aug 1, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/46
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for making MAA from a clarified DAA-containing fermentation broth includes (a) distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAA, at least some DAA, and at least about 20 wt. % water; (b) cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a DAA-containing liquid portion in contact with a MAA-containing solid portion that is substantially free of DAA; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.