BPDA

BPDA or biphenyl-tetracarboxylic acid dianhydride is a monomer used in the production of some polyimides. BPDA or biphenyl-tetracarboxylic acid dianhydride is a monomer used in the production of some polyimides. The chemical shifts in 1H and 13C NMR spectroscopy are given in the literature. The melting point is 299 - 301 °C.