Preparation of norbornane-based PAC ballasts

摘要

Embodiments in accordance with the present invention provide for norbornane-type ballast materials, norbornane-type photoactive compounds derived from such ballast materials and alkali-soluble positive-tone polymer compositions that encompass such norbornane-type photoactive compounds and one of a PBO or PNB resin.

主权项

1. A compound of formula AA or BB: wherein n independently of each other is an integer from 0 to 3; Z is selected independently from one or more of structures C or D: where C*** represents a carbon atom of a norbornane ring and Q represents from one to five substituents independently selected from —OH, a halogen, a C1 to C6 alkyl group, a C3 to C12 cycloalkyl group, an aryl and an alkaryl group, n is from 0 to 4, and with the provisos that at least one of such substituents is —OH; W in formula AA is either a covalent bond or a divalent linking group selected from a C1 to C12 alkyl, ether or polyether, a C3 to C12 cycloalkyl, aryl or alkaryl group, or one or more norbornane-type moieties; W* in formula BB is hydrogen, a monovalent group selected from a C1 to C12 alkyl, ether or polyether, a C3 to C12 cycloalkyl, aryl or alkaryl group, or one or more norbornane-type moieties.