PHOTOSENSITIVE RESIN COMPOSITION, USE THEREOF, LACTONE RING-CONTAINING POLYMER, AND PRODUCTION THEREOF

摘要

PURPOSE: A photosensitive resin composition including a polymer containing a lactone ring as an essential component and a process of preparing the polymer containing a lactone ring are provided. The photosensitive resin composition can form uniform coating films with higher coating film strength without causing surface contamination, can decrease of evenness of coating films, decrease of film thickness, and coloring by decomposition in heat treatment of subsequent steps, and has good sensitivity of exposure. CONSTITUTION: The photosensitive resin composition comprises a lactone ring-containing polymer obtained by polymerization of comonomers and lactonization, wherein the comonomers include a 2-(hydroxyalkyl)acrylate ester and a monomer component containing an acidic group. The lactone ring-containing polymer is obtained by almost quantitatively lactonization of a 2-(hydroxyalkyl)acrylate ester structural unit.