2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine monomers, methods of manufacture, and copolymers derived therefrom

Abstract

A purified 2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine compound of formula (I): wherein R is a C1-25 hydrocarbyl; each occurrence of R2 and R3 is independently a halogen or a C1-25 hydrocarbyl; p is 0 to 4; and each q is independently 0 to 3; and wherein the purified 2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine compound of formula (I) has a purity of greater than 99.4%, as determined by high performance liquid chromatography.

Dependencies are inferred from the claim text.