申请人:EASTMAN CHEMICAL COMPANY
公开号:US10696645B2
公开(公告)日:2020-06-30
Disclosed is a purified dialkyl furan dicarboxylate (DAFD) vapor composition containing at least 99.5 wt. % DAFD; 5-(alkoxycarbonyl) furan-2-carboxylic acid (ACFC) that, if present, is present in an amount of not more than 1000 ppm, alkyl-5-formylfuran-2-carboxylate (AFFC) that, if present, is present in an amount of not more than 1000 ppm, 5-(dialkoxymethyl)furan-2-carboxylic acid (DAFCA) that if present, is present in an amount of not more than 1000 ppm, and alkyl 5-(dialkoxymethyl)furan-2-carboxylate (ADAFC) that if present, is present in an amount of not more than 1000 ppm, in each case based on the weight of the DAFD vapor composition.
公开了一种纯化的呋喃二甲酸二烷基酯(DAFD)蒸汽组合物,其中含有至少 99.5 wt.%的 DAFD;5-(烷氧羰基)呋喃-2-羧酸(ACFC),如果存在,其含量不超过 1000 ppm;5-甲酰基呋喃-2-羧酸烷基酯(AFFC),如果存在,其含量不超过 1000 ppm;5-(二烷氧基甲基)呋喃-2-羧酸(DAFCA),如果存在、5-(二烷氧基甲基)呋喃-2-羧酸烷基酯 (ADAFC),如果存在,其含量不超过 1000 ppm。