An improved dimethyl terephthalate (DMT)/purified terephthalic acid (PTA) process has been jointly developed by H &G Hegmanns, Gelsenkirchen/Germany and Sulzer Chemtech, Winterthur/Switzerland.

• 德国H&GHegmanns公司和瑞士SulzerChemtech公司联合开发了一种改进的对苯二甲酸二甲酯(DMT)和精对苯二甲酸(PTA)工艺。