HEAT RESISTANT INSULATING TAPES, ENAMELS FOR WIRES, PROTECTIVE COATING FILMS FOR SEMICONDUCTORS, AND LIQUID CRYSTAL PROTECTIVE FILMS

摘要

PROBLEM TO BE SOLVED: To provide heat resistant insulating tapes made of alicyclic polyimides having high light transmittance and sufficiently high heat resistance.SOLUTION: A heat resistant insulating tape is made of an alicyclic polyimide obtained by combining an aromatic diamine with an alicyclic tetracarboxylic dianhydride produced using a 5-norbornene-2-spiro-α-cycloalkanone-α'-spiro-2''-5''-norbornene represented by the general formula (1) in the figure. [Rto Reach independently represent H, a C1-10 alkyl group, and F; and n represents an integer from 0 to 12].