| abstract |
(57) [Summary] [Purpose] A photosensitive resin composition that can be developed with good resolution in a short time in a weak alkaline aqueous solution, and the photocured product has excellent adhesion and flexibility, and has strong resistance to alkali etching. Provide things. [Structure] A vinyl-based copolymer compound having a specific Tg and molecular weight, and two ethylenically unsaturated compounds having a specific structure (for example, 2,2-bis [4- (methacryloxy-polyethoxy) Phenyl] propane and β′-acryloyloxyethyl-γ-chloro-β-hydroxypropyl-o-phthalate), three photoinitiators of a specific structure (for example, 1,7-bis (9-acridinyl) heptane and benzyldimethyl) A photosensitive resin composition containing a ketal and a benzophenone derivative) and a photosensitive element using the same. |