Patent ID: 8779183

Claim:
An acid generating agent represented by the following formula (1): wherein X represents a monocyclic or polycyclic hydrocarbon group having 3 to 30 carbon atoms, and having at least one hydrogen atom substituted by an alkyl or alkoxy group which has 1 to 10 carbon atoms and may be unsubstituted or substituted with an ether group, an ester group, a carbonyl group, an acetal group, an epoxy group, a nitrile group or an aldehyde group, or by a perfluoroalkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group having 1 to 10 carbon atoms or a cyano group; R 6 represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a heteroatom selected from the group consisting of nitrogen (N) and sulfur (S); m is an integer from 1 to 2; and A+ is an organic counterion.