Patent ID: 6096480
Filing Date: 2000-08-01
Classification: C08G,C09D,G03F

Abstract:
A photosensitive polyimidosiloxane composition comprising:a polyimidosiloxane comprising 15-80 mole percent of the units, ##STR6## wherein X represents a direct bond and R.sub.3 represents an aromatic residue containing a photosensitive group with an unsaturated hydrocarbon group, and 85-20 mole percent of the units, ##STR7## wherein X is as defined above, each R.sub.4 independently represents a divalent hydrocarbon residue, each R.sub.5 independently represents an alkyl group of 1-3 carbon atoms or a phenyl group and 1 represents an integer of 3-30,a finely divided inorganic filler, andan organic solventwherein an insulating film of a thickness of 2-50 .mu.m obtained from said photosensitive polyimidosiloxane composition has a resolution of at least 10 .mu.m after photocuring by irradiation with a superhigh-pressure mercury lamp (2 kW) on a dried film prepared from said photosensitive polyimidosiloxane composition, immersing the photocured film in a triglyme solvent and washing off the uncured portions, and then washing the surface with methanol to obtain a relief pattern adhering to the polyimide film which is then heat treated at 160.degree. C. for 120 minutes.