Bislactone compound and a process for producing the same

摘要

A bislactone compound represented by the general formula (I): <IMAGE> (I) wherein R1 and R2 each independently represent a hydrogen atom or an alkyl group having 6 or less carbon atoms, and R3, R4, R5 and R6 each independently represent a hydrogen atom, a hydroxy group or an alkyl group having 6 or less carbon atoms, which is useful as a stabilizer for polymers and as a raw material of a positive type resist: a process for producing the bislactone compound; and a positive resist composition comprising the bislactone compound.