Patent ID: 8921447
Filing Date: 2014-12-30
Classification: C08F,C09D

Abstract:
1. A process for manufacturing a polymeric material having a compositional gradient comprising: forming a mixture comprising a first photopolymerizable polymer precursor and a second photopolymerizable polymer precursor, wherein the first and second photopolymerizable polymer precursors are present in a 1:1 molar ratio; and subjecting the mixture to a UV light intensity gradient using UV light having a wavelength of 313 nm or 365 nm, wherein the first photopolymerizable polymer precursor has greater reactivity than the second photopolymerizable polymer precursor, wherein the first and second photopolymerizable polymer precursors are selected from the group consisting of methyl methacrylate, 2-(dimethylamino)ethyl methacrylate, 2-(dimethylamino)ethyl acrylate, 2-hydroxyethyl acetate, 2-hydroxyethyl methacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol dimethacrylate, 2-methoxyethyl acrylate, and combinations thereof.