Patent Number: 6,310,239

Title: Process for manufacturing terephthalic acid

Abstract: This invention relates to a process for manufacturing terephthalic acid and more particularly, to a process for manufacturing and recovering the highly purified terephthalic acid, in accordance with the practice of this invention comprising the following procedurses: alkali weight-reduction waste water discharged from weight-reduction process in a polyester textile dyeing complex is dissolved in water, adsorbed to remove impurities, and through acid-neutralization, terephthalic acid of this invention may be obtained.

Inventors: Roh; Hang-Duk (Kyungki-do, KR), Bae; Dongmok (Seoul, KR)

Assignee: Sunkyong Industries Co., Ltd.

International Classification: C07C 51/09 (20060101); C07C 051/42 ()

Expiration Date: 10/30/2018