| http://www.w3.org/ns/prov#value | - A circuit according to claim 1, wherein the polymer consists of a polyamide-imide and is obtained by heating a silicon-modified prepolymer of the formula I, in which m is 2, R2 is a benzene ring or the benzophenone ring system and R3 is a 4,4'-diphenylether or 4,4'-diphenylmethane radical, and R1, Q and Y are as defined in claim 1.
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