| abstract |
A copolymer composition including a copolymer having repeat units of structural formula I: n nwhere X is selected from —CH 2 —, —CH 2 —CH 2 — and O; m is an integer from 0 to 5; and each occurrence of R 1 -R 4 are independently selected from H; C 1 to C 25 linear, branched, and cyclic alkyl, aryl, aralkyl, alkaryl, alkenyl and alkynyl that can include one or more hetero atoms selected from O, N, and Si; a group that contains an epoxy functionality; —(CH 2 ) n C(O)OR 5 ; —(CH 2 ) n C(O)OR 6 ; —(CH 2 ) n OR 6 ; —(CH 2 ) n OC(O)R 6 ; —(CH 2 ) n C(O)R 6 ; —(CH 2 ) n OC(O)OR 6 ; and any combination of two of R 1 , R 2 , R 3 , and R 4 linked together by a linking group. A portion of the repeat units having structural formula I contain at least one epoxy functional pendant group. The copolymer composition can be included with a material that photonically forms a catalyst in a photodefinable dielectric composition, which can be used to form a photodefinable layer on a substrate. |