| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an alkali developable photosensitive resin composition which is environmentally friendly, and to provide a dry film and the cured product of the composition, and to provide a printed circuit board having the cured film of the composition formed thereon. <P>SOLUTION: The photosensitive resin composition contains (A) a resin made of recovered polyester as a raw material and (B) a photoinitiator. Preferably, the resin (A) is a polyol, a carboxyl group-containing resin or a photosensitive resin having an ethylenically unsaturated group; and in particular, the resin (A) is a polyol obtained by depolymerization of a recovered polyester (a) with a polyol (b) having two ore more hydroxyl groups in one molecule, or a carboxyl group-containing resin obtained by reacting a polybasic acid or its anhydride (c) with recovered polyester before, during or after the depolymerization. More preferably, the photosensitive resin composition contains a carboxyl group-containing photosensitive resin (C) except for the resin (A). More preferably, the photosensitive resin composition contains a thermosetting component (D), and further a colorant (E). <P>COPYRIGHT: (C)2011,JPO&INPIT |
