Patent ID: 8603728
Filing Date: 2013-12-10
Classification: C08F,G03F

Abstract:
1. A copolymer, comprising the polymerized product of a base-soluble monomer of formula (I): wherein: R L m+1 is an integer of 2 to 5, each X wherein R b is C 1-20 alkyl; C 1-20 fluoroalkyl, C 3-20 cycloalkyl, C 6-20 aryl, C 7-20 aralkyl, or a combination comprising at least one of the foregoing, and an additional monomer copolymerizable with the base-soluble monomer of formula (I); wherein the additional monomer is a (meth)acrylate monomer having an acid deprotectable base soluble group, a (meth)acrylate monomer having a lactone functional group, a (meth)acrylate monomer having a base-soluble group not identical to that of formula (I), or a combination comprising at least one of the foregoing monomers.