Patent ID: 9527938
Filing Date: 2016-12-27
CPC Classification: C08F,C09D,G03F

Claim Text:
1. A copolymer obtained by polymerizing at least one monomer comprising an acid leaving group and at least one monomer without an acid leaving group, wherein N(v in Equation (1), Sw is a value represented by the following Equation (2), and Sc is a value represented by the following Equation (3), in Equations (2) and (3), m represents 5, N(v A(v W(v when, among five fractions obtained by dividing an eluate providing a peak corresponding to the copolymer in an elution curve obtained by gel permeation chromatography (GPC) in order of elution so as to have an equal volume, a ratio of the monomer unit comprising an acid leaving group among total monomer units constituting the copolymer included in a first fraction which is eluted earliest is denoted as N(v