Patent ID: 7339071

Claim:
An aryl ethynyl phthalic acid diester compound, represented by the following Formula 3: wherein R 1 and R 2 each independently represent an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group or an aryl group; R 3 represents a halogen atom, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an aryloxy group having 6 to 12 carbon atoms, an acyl group having 1 to 10 carbon atoms, a perfluoroalkyl group having 1 to 6 carbon atoms or a perfluoroalkoxy group having 1 to 6 carbon atoms; n represents an integer of from 0 to 2; and when n represents 2, such that R 3 is present in plurality, each R 3 may be the same as or different from any other R 3 or linked thereto to form a ring.