Patent ID: 8227181

Claim:
A method of preparing a patterned film on a substrate, said method comprising the steps of: applying a silicone composition onto the substrate to form a film of the silicone composition; exposing a portion of the film to radiation to produce a partially exposed film having an exposed region and a non-exposed region; heating the partially exposed film for a sufficient amount of time and at a sufficient temperature to substantially insolubilize the exposed region in a developing solvent comprising a siloxane component with the non-exposed region remaining soluble in the developing solvent; and removing the non-exposed region of the partially exposed film with the developing solvent to reveal a film-free region on the substrate and to form the patterned film including the exposed region that remains on the substrate with the film-free region substantially free of residual silicone from the developing solvent due to the presence of the siloxane component in the developing solvent.