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Synthesis and Characterization of Photosensitive Polyimides Containing Alicyclic Structure  

심종천 (한국화학연구원 화학소재연구부)
최성묵 (한국화학연구원 화학소재연구부)
심현보 (한국화학연구원 화학소재연구부)
권수한 (충북대학교 화학과)
이미혜 (한국화학연구원 화학소재연구부)
Publication Information
Polymer(Korea) / v.28, no.6, 2004 , pp. 494-501 More about this Journal
Abstract
A new alkali developable photosensitive poly(amic acid) (PAA-0) with transmittance at 400 nm was synthesized from cyclobutane-1,2,3,4-tetracarboxylic dianhydride, 2-(methacryloyloxy)ethyl-3,5-diamino-benzoate and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyl disiloxane in N-methyl-2-pyrrolidinone. Photosensitivity of the PAA-0 was investigated at 365-400 nm in the presence of a photoinitiator using a high pressure mercury lamp. The photo-cured poly(amic acid) was insoluble toward aqueous 2.38 wt% tetramethylammonium hydroxide solution. Negative pattern of the PAA-0 with 25 ${\mu}{\textrm}{m}$ resolution was obtained by developing with 2.38 wt% tetramethylammonium hydroxide solution after exposure of 600 mJ/$\textrm{cm}^2$ in the presence of 2,2-dimethoxy-2-phenyl-acetophenone as a photoinitiator. The patterned poly(amic acid) was converted to polyimide by thermal curing at 25$0^{\circ}C$ for 50 min, which showed chemical resistance against photoresist stripper as well as good transmittance at 400 nm.
Keywords
photosensitive; polyimide; alkali developable; good transmittance; photopatterning; alicyclic chain polymer;
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