Abstract: A process for efficiently esterifying furan dicarboxylic acid, especially 2,5-furan dicarboxylic acid in the presence of an alcohol and, optionally, a catalyst is disclosed. The process provides high yields of the diesters of furan dicarboxylic acid and comprises a multi-stage esterification process wherein a portion of a gas phase is removed at each stage of the multi-stage process.

Abstract: A process for efficiently esterifying furan dicarboxylic acid, especially 2,5-furan dicarboxylic acid in the presence of an alcohol and, optionally, a catalyst is disclosed. The process provides high yields of the diesters of furan dicarboxylic acid and comprises a multi-stage esterification process wherein a portion of a gas phase is removed at each stage of the multi-stage process.

Abstract: A process for efficiently esterifying furan dicarboxylic acid, especially 2,5-furan dicarboxylic acid in the presence of an alcohol and, optionally, a catalyst is disclosed. The process provides high yields of the diesters of furan dicarboxylic acid and comprises a multi-stage esterification process wherein a portion of a gas phase is removed at each stage of the multi-stage process.

Abstract: A process for efficiently esterifying furan dicarboxylic acid, especially 2,5-furan dicarboxylic acid in the presence of an alcohol and, optionally, a catalyst is disclosed. The process provides high yields of the diesters of furan dicarboxylic acid and comprises a multi-stage esterification process wherein a portion of a gas phase is removed at each stage of the multi-stage process.

Abstract: Furfural is produced by contacting a feedstock solution containing C5 sugar and/or C6 sugar with a solid acid catalyst using reactive distillation. Both high yield and high conversion are obtained, without production of insoluble char in the reaction vessel. Degradation of furfural is minimized by its low residence time in contact with the solid acid catalyst. Higher catalyst lifetime can be achieved because the catalyst is continually washed with the refluxing aqueous solution and not sitting in high-boiling byproducts like humins, which are known to be deleterious to catalyst lifetime.

Abstract: Furfural is produced by contacting a feedstock solution containing C5 sugar and/or C6 sugar with a solid acid catalyst using reactive distillation. Both high yield and high conversion are obtained, without production of insoluble char in the reaction vessel. Degradation of furfural is minimized by its low residence time in contact with the solid acid catalyst. Higher catalyst lifetime can be achieved because the catalyst is continually washed with the refluxing aqueous solution and not sitting in high-boiling byproducts like humins, which are known to be deleterious to catalyst lifetime.

Abstract: A process for recovering alcohol from a fatty acid and/or diacid alcohol ester using water in an equal or lesser amount than oil on a mass basis. The process uses multiple reactors with separation of the alcohol product of hydrolysis between successive reactors. The use of low amounts of water allows recovery of the alcohol with a lower evaporation requirement, thus making a more energy efficient process.

Abstract: A process for making nylon 6, in which caprolactam and water are reacted in a multistage reactive distillation column.

Abstract: A process for making nylon 6, in which caprolactam and water are reacted in a multistage reactive distillation column.

Abstract: Process for making Nylon 6,6 by reacting adiponitrile, hexamethylenediamine and steam in a multistage distillation column reactor.

Abstract: Process for making nylon 6 in which a feed stream containing a major portion of caprolactam and/or nylon 6 prepolymer and a minor portion of aminocapronitrile is fed to a multistage reactive distillation column in which the feed stream flows countercurrently to a steam stream.