| abstract |
[PROBLEMS] To provide a silicone-modified polybenzoxazole resin having flexibility, excellent solubility in an organic solvent, and good usability, and a process for producing the same. [Solution] A silicone-modified polybenzoxazole resin having a repeating unit represented by the following formula (1a) and a repeating unit represented by the following formula (1b). [Wherein R 1 to R 4 are each independently a monovalent hydrocarbon group having 1 to 8 carbon atoms and may include a glycidyl group, an acryloyl group or a methacryloyl group. m and n are each independently an integer of 0 to 300; R 5 is a linear, branched or cyclic alkylene group having 1 to 8 carbon atoms or a phenylene group. a and b are positive numbers satisfying 0 <a <1, 0 <b <1, and a + b = 1. X 1 is a divalent linking group represented by the following formula (2). |