POLYMERIZABLE MONOMERS

摘要

A monomer of formula (1) is provided wherein R 1 is hydrogen or a monovalent C 1 -C 6 hydrocarbon group, and R 2 is a group having polymerization functionality. Using the monomer, crosslinking units can be incorporated into a polymer chain. A chemically amplified negative resist composition comprising a base polymer having crosslinking units incorporated therein has a high sensitivity and forms a resist pattern with minimized LER.