갇광성 관능기를 갖는 중합체, 이를테면 polyglyceryl phthalate(PG), bisphenol A-epichl-orohydrin 축중합체(BE) 및 polyvuinyl alcohol(PVA)의 naphthoquinone-1,2-diazide-5-sulfonyl esters(PGND, BEND 및 PVAND)를 합성하였다.빙점강하법으로 측정한 모체수지들의 분자량은 PG의 경우 650${sim}$1500, BE는 780${sim}$1320이었다. PG, BE 및 PVA를 naphthoquinone-1,2-diazide-5-sulfonyl chloride로 ester화 시켜 얻은 PGND, BEND 및 PVAND의 원소분석의 계산치와 실측치가 잘 일치하고 있는 점으로 보아 모체수지인 PG, BE 및 PVA의 중합도는 ester화 된 경우에도 변하지 않는다는 것을 알 수 있었다
Polymers with photosensitive functional groups, the naphthoquinone-1,2-diazide-5-sulfonyl esters(PGND, BEND and PVAND) of polyglyceryl phthalate(PG), bisphenol A-epichlorohydrin polycondensate(BE) and polyvinyl alcohol(PVA), were prepared. The molecular weights of the starting materials were determined by the cryoscopic method, i.e., in the range of 650${sim}$1200 for PG and 780${sim}$1320 for BE, PGND, BEND and PVAND were prepared by esterification of PG, BE and PVA with naphthoquinone-1,2-diazidie-5-sulfonyl chloride, and the replacements of such a functional groups were confirmed by the infrared absorption spectra and elemental analyses. The good agreement between the observed values of elemental analyses (PGND, BEND and PVAND) and the calculated values, indicated that the degree of polymerization did not change in the course of esterification of PG, BE and PVA
