PHOTOSENSITIVE COATING COMPOSITIONS AND THE USE THEREOF FOR PROTECTIVE PURPOSES

摘要

Photosensitive coating composition and the use thereof for protective purposes Uniform protective coatings, particularly solder resist masks, on printed circuit boards can be produced with coating compositions having a viscosity of 200 to 700 m Pas at 25.degree.C and comprising a solution of a photosensitive, thermally curable, lacquer-forming substance, wherein there is additionally uniformly dispersed 5 to 50 % by weight of a finely divided filler.