New positive-type photosensitive polyimide: poly(hydroxyimide) with diazonaphthoquinone

@inproceedings{Nakayama1996NewPP,
  title={New positive-type photosensitive polyimide: poly(hydroxyimide) with diazonaphthoquinone},
  author={Tomonari Nakayama and Amane Mochizuki and Mitsuru Ueda},
  year={1996}
}
Abstract A positive working photosensitive polyimide based on polyhydroxyimide (PHI) and 2,3,4-tris[1-oxo-2-diazonaphthoquinone-4-sulfonyloxy] benzophenone (D4SB) as a photoreactive compound has been developed. The PHI was prepared by the ring-opening polyaddition of 4,4′-hexafluoroisopropylidenebis(phthalic anhydride) (6FDA), 4,4′-diamino-4″-hydroxytriphenylmethane (DHTM), and 4,4′-oxydianiline (ODA), followed by thermal cyclization in refluxing xylene. The PHI film showed excellent… CONTINUE READING