Patent ID: 8114949
Filing Date: 2012-02-14
Classification: G03F

Abstract:
1. A copolymer consisting essentially of: a constituent unit consisting of a monomer represented by the following formula (1): wherein R represents a hydrogen atom or a methyl group, R R R A A Z represents a cyclohexane ring, norbornane ring, bicyclo[2.2.2]octane ring, or tetracyclo[4.4.0.1 one or more constituent units derived from a monomer having a lactone structure in a molecule, and, one or more constituent units derived from a monomer containing an alicylic skeleton having a hydroxy group or a cyano group in a molecule, and one or more constituent units derived from monomers selected from the group consisting of monomers represented by the following formulae (6-1), (6-2), (6-4), (6-5), (6-14), (6-15), (6-16), (6-18), (6-57), (6-58), (6-65), (6-66), and (6-67): wherein R represents a hydrogen atom or a methyl group.