This study focused on the recovery of aromatic polycarboxylic acids from the mother liquor of manufacturing trimellitic anhydride and it's application for making mixed plastifier.
The company main product includes: High boiling point products and so on solvent series, plasticizer series, aromatic hydrocarbon series, Zhong propyl butyl-carbinol, 2- octanone and thiophen.
These chemicals-widely used in the middle decades of the 20th century to manufacture electrical insulation, coolants, sealants and plasticisers-often ended up dumped in lakes, rivers and coastal waters.