Abstract:
Processes that, make nitrogen-containing compounds include converting succinic acid (SA) or monoammonium succinate (MAS) derived from a diammoniurn succinate (DAS)- or MAS-containing fermentation broth to produce such compounds Including diammobmane (DAB), succinic dinitrile (SDN), succinic amino nitrile (SAN), succinamide (DAM), and related polymers.
Abstract:
Processes that make nitrogen-containing compounds include converting succinic acid (SA) or monoammonium succinate (MAS) derived from a diammonium succinate (DAS)- or MAS-containing fermentation broth to produce such compounds including diaminobutane (DAB), succinic dinitrile (SDN), succinic amino nitrile (SAN), succinamide (DAM), and related polymers.
Abstract:
Processes for making hydrogenated products including caprolactame (CL) caprolactone (CLO) or 1,6-hexanediol (HDO) and derivative thereof from monoammonium adipate (MAA) and/or adipic acid (AA) obtained from a clarified diammonium adipate-containing (DAA-containing) fermentation broth or monoammonium adipate-containing (MAA-containing) fermentation broth.
Abstract:
Processes for making monoammonium succinate (MAS) and/or succinic acid (SA) from either a clarified diammonium succinate (DAS)-containing fermentation broth or a clarified MAS-containing fermentation broth include (a) distilling the broth to form an overhead that includes water and optionally ammonia and a liquid bottoms that includes MAS or SA; (b) cooling and/or evaporating the bottoms and optionally adding an antisolvent to the bottoms to attain a temperature and composition sufficient to cause the bottoms to produce a solid portion that contains MAS or SA in contact with a liquid portion; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.
Abstract:
A composition for deicing or for the preparation of a heat transfer fluid is provided. The composition comprises a mixture of at least two carboxylic acid salts having a t/c ratio of 2 or lower, including a dicarboxylic salt and a monocarboxylic salt, said dicarboxylic salt being present in the mixture in an amount of at least 50 wt % of the weight of the mixture, on a dry basis. More particularly, said mixture is including a succinate and a formate, wherein the succinate is in an amount of at least 50 wt %, on a dry basis. Also provided is a method for deicing a surface or preventing the accumulation of ice, snow or a mixture thereof on a surface, comprising a step of applying on a surface covered by ice, snow or a mixture thereof, or susceptible of being covered by ice, snow or a mixture thereof, the above composition. The composition is also useful for the preparation of a heat transfer fluid coolant to be used in a heat transfer system comprising a heat transfer fluid provided with a cooling system.
Abstract:
Processes for producing caprolactam (CL) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).
Abstract:
Processes for making SA from either a clarified DAS-containing fermentation broth or a clarified MAS-containing fermentation broth that include distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 300° C. to form an overhead that comprises water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt % water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure SA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.
Abstract:
Processes for making monoammonium succinate (MAS) and/or succinic acid (SA) from either a clarified diammonium succinate (DAS)-containing fermentation broth or a clarified MAS-containing fermentation broth include (a) distilling the broth to form an overhead that includes water and optionally ammonia and a liquid bottoms that includes MAS or SA; (b) cooling and/or evaporating the bottoms and optionally adding an antisolvent to the bottoms to attain a temperature and composition sufficient to cause the bottoms to produce a solid portion that contains MAS or SA in contact with a liquid portion; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.
Abstract:
Processes for making monoammonium succinate (MAS) and/or succinic acid (SA) from either a clarified diammonium succinate (DAS)-containing fermentation broth or a clarified MAS-containing fermentation broth include (a) distilling the broth to form an overhead that includes water and optionally ammonia and a liquid bottoms that includes MAS or SA; (b) cooling and/or evaporating the bottoms and optionally adding an antisolvent to the bottoms to attain a temperature and composition sufficient to cause the bottoms to produce a solid portion that contains MAS or SA in contact with a liquid portion; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.
Abstract:
A method of removing color bodies from a fermentation broth includes precipitating a color-forming impurity (color body) by adjusting the fermentation broth to a pH greater than about 13; filtering our precipitated color-forming impurities from the broth; and bleaching a second color impurity by treating the broth with an oxidizing agent.