[EN] PROCESSES FOR PRODUCING TEREPHTHALIC ACID AND TEREPHTHALIC ESTERS<br/>[FR] PROCÉDÉS DE PRODUCTION D'ACIDE TÉRÉPHTALIQUE ET D'ESTERS TÉRÉPHTALIQUES
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2012125218A1
公开(公告)日:2012-09-20
The present invention generally relates to a condensed process for producing terephthalic acid and terephthalic esters from a dialkyl cyclohexane-2,5-dione-1,4-dicarboxylate; a chemoselective process for preparing a substantially bicyclic-lactone-free dialkyl cyclohexane-2,5-diol-1,4-dicarboxylate; and compositions of matter prepared thereby.
本发明通常涉及从二烷基环己烷-2,5-二酮-1,4-二羧酸酯生产对苯二甲酸和对苯二甲酸酯的浓缩工艺;一种选择性化学过程,用于制备基本无双环内酯的二烷基环己烷-2,5-二醇-1,4-二羧酸酯;以及由此制备的物质组合。