Patent ID: 6686124
Filing Date: 2004-02-03
Classification: G03C,G03F

Abstract:
A multifunctional polymer comprising a polymeric chain having chromophore groups and crosslinking sites; wherein the polymer is crosslinkable without the need of other components and wherein said chromophore groups are capable of interacting with the exposing radiation or beam to which the polymer is to be exposed and are derived from 9-anthracenemethanol, and reduces reflectivity upon exposure to said exposing radiation or beam;wherein the chromophore groups are attached to polymeric chain at a ring-carbon position via an electrophilic or nucleophilic aromatic substitution reaction or through phenolic oxygen via a functional group transformation; and wherein the amount of said crosslinking sites is about 2 to about 50 mole % based upon the polymeric chain; wherein the functional group transformation is selected from the group consisting of etherification and esterification; and wherein the polymeric chain is selected from the group consisting of poly(4-hydroxystyrene), copolymers of 4-hydroxystyrene, novolac resins, acrylate polymers, methacrylate polymers, fluorocarbon polymers and cycloaliphatic polymers.