Studies on Photosentitive Polymers (XI). Studies on Photodegradative Reaction of Naphthoquinone-1,2-diazide-5-sulfonyl Esters

感光性 樹脂에 關한 硏究 (第11報). Naphthoquinone-1,2-diazide-5-sulfonyl Esters의 光分解反應

  • Shim Jyong Sup (Department of Chemical Technology, College of Engineering, Seoul National University) ;
  • Kang Doo Whan (Department of Chemical Technology, College of Engineering, Seoul National University)
  • 심정섭 (서울大學校 工科大學 工業化學科) ;
  • 강두환 (서울大學校 工科大學 工業化學科)
  • Published : 1975.08.30

Abstract

The degradation mechanisms of naphthoquinone-1,2-diazide-5-sulfonyl esters(PGND, BEND and PVAND) of polyglyceryl phthalate (PG), bisphenol A-epichlorohydrin (BE) and polyvinyl alcohol (PVA) were studied by infrared absorption spectra. Absorption band due to C=N=and C=O of o-quinonediazide group decreased or disappeared after sufficient exposing to light. And also, absorption band C=O of indene carboxylic acid was increased. From the results, it may be concluded that the above photosensi tive polymers were dissociated to indene carboxylic acid soluble in aqueous alkali solution. Further, the effect of sensitizers were examined by the variation of intensity in infrared absorption spectra of sensitized and unsensitized samples.

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