| 摘要 |
PURPOSE:To obtain a photosensitive resin compsn. useful as a liquid photosolder resist excellent in UV curing property which enables formation of picture images by exposure to UV rays and development with a dilute alkali soln. after a film is formed. CONSTITUTION:This photosensitive resin compsn. contains a reaction product obtd. by adding a compd. of formula IV to a part of carboxyl groups of copolymers of formulae I, II, and III, diluent, and photoinitiator. In formulae I-III, R1 is a hydrogen atom or methyl group, and R2 is an aliphatic hydrocarbon group of 1-6 carbon number. In formula IV, R1 is same as in formulae I-III, R3 is an aliphatic hydrocarbon group or aromatic hydrocarbon group of 1-12 carbon number. |
