[EN] PROCESS FOR PREPARING HEXAMETHYLENEDIAMINE AND POLYAMIDES THEREFROM<br/>[FR] PROCÉDÉ DE PRÉPARATION D'HEXAMÉTHYLÈNEDIAMINE ET DE POLYAMIDES À PARTIR DE CELLE-CI
申请人:AMYRIS INC
公开号:WO2012141993A1
公开(公告)日:2012-10-18
Provided herein are processes for preparing hexamethylenediamine from one or more of the cis,cis-, cis,trans- and trans,trans- double-bond isomers of muconate diester. The muconate diester can contain carbon atoms derived from biomass containing detectable 14C content determined according to ASTM D6866 and optionally containing a 14C content up to 0.0000000001%. The process converts one or more of the cis,cis-, cis,trans- and trans,trans- double-bond isomers of muconate diester to the one or more of the cis,cis-, cis,trans- and trans,trans- double-bond isomers of muconamide. The isomer(s) of muconamide is then either: 1) directly converted by reduction to hexamethylenediamine; or 2) dehydrated to one or more of the cis,cis-, cis,trans- and trans,trans- double-bond isomers of mucononitrile which is then reduced to the hexamethylenediamine; or 3) reduced to adipamide, which is dehydrated to adiponitrile, and which is converted to hexamethylenediamine. Hexamethylenediamine so prepared can be used to make various polyamides.
本文提供了一种从顺式、顺-反式和反-反式的顺二酸二酯异构体中制备六亚甲基二胺的方法。顺二酸二酯可以包含从含有可检测14C含量的生物质中得出的碳原子,根据ASTM D6866确定,并且可选地含有高达0.0000000001%的14C含量。该过程将顺式、顺-反式和反-反式的顺二酸二酯异构体转化为顺式、顺-反式和反-反式的顺二酰胺。然后,顺二酰胺的异构体被直接还原为六亚甲基二胺;或者被脱水为顺式、顺-反式和反-反式的顺二腈,然后还原为六亚甲基二胺;或者被还原为己二酰胺,脱水为己二腈,转化为六亚甲基二胺。制备的六亚甲基二胺可用于制造各种聚酰胺。