Patent ID: 9581901
Date: 2017-02-28
CPC Classifications: C08F,C09D,G03F

Claim:
1. A copolymer comprising repeat units derived from an acid-labile monomer; an aliphatic, lactone-containing monomer; a base-soluble monomer comprising a 1,1,1,3,3,3-hexafluoro-2-hydroxyprop-2-yl substituent or a —NH—S(O) a photoacid-generating monomer comprising an aliphatic anion, wherein the photoacid-generating monomer comprises or a combination thereof, wherein R a is —H, —F, —CH 3 , or —CF 3 ; and a neutral aliphatic monomer comprising wherein R a is —H, —F, —CH 3 , or —CF 3 ; each occurrence of R c is independently halogen, C 1-6 perfluoroalkyl, or C 3-6 perfluorocycloalkyl; and q is 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; or wherein R a is —H, —F, —CH 3 or —CF 3 ; each occurrence of R c is independently halogen, C 1-12 hydrocarbyl, C 2-10 alkenyl, C 1-6 perfluoroalkyl, or C 3-6 perfluorocycloalkyl; and each occurrence of q is independently 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; or wherein R a is —H, —F, —CH 3 , or —CF 3 ; each occurrence of R c is independently halogen, C 1-12 hydrocarbyl, C 2-10 alkenyl, C 1-6 perfluoroalkyl, or C 3-6 perfluorocycloalkyl; and each occurrence of q is independently 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; or wherein R a is —H, —F, —CH 3 , or —CF 3 ; each occurrence of R c is independently halogen, C 1-12 hydrocarbyl, C 2-10 alkenyl, C 1-6 perfluoroalkyl, or C 3-6 perfluorocycloalkyl; R c is C 1-10 alkylene or C 3-10 cycloalkylene; n is 1; and each occurrence of q is independently 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; or wherein R a is —H, —F, —CH 3 , or —CF 3 ; each occurrence of R c is independently halogen, C 1-12 hydrocarbyl, C 2-10 alkenyl, C 1-6 perfluoroalkyl, or C 3-6 perfluorocycloalkyl; R f is C 1-12 alkyl, C 1-6 perfluoroalkyl, C 3-10 cycloalkyl, or C 3-6 perfluorocycloalkyl; and each occurrence of q is independently 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; or a combination thereof.