Abstract: A process for forming a capped poly(arylene ether) copolymer, the process comprising: combining an acid catalyst and an uncapped poly(arylene ether) composition comprising an uncapped poly(arylene ether) copolymer comprising a phenolic end group ortho-substituted with a (C1-C12-hydrocarbyl)(C1-C12-hydrocarbyl)aminomethylene group, to form a first reaction mixture; reacting the (C1-C12-hydrocarbyl)(C1-C12-hydrocarbyl)aminomethylene group of the uncapped poly(arylene ether) copolymer in the presence of the acid catalyst under conditions effective to cleave a (C1-C12-hydrocarbyl)(C1-C12-hydrocarbyl)amino group from the uncapped poly(arylene ether) copolymer, to form a second reaction mixture; adding a nucleophilic catalyst and a capping agent to the second reaction mixture; and reacting the capping agent and the uncapped poly(arylene ether) copolymer under conditions effective to provide a product mixture comprising the capped poly(arylene ether) copolymer; preferably wherein the (C1-C6-hydrocarbyl)(C1-C6-hydroc

Abstract: A continuous method for the manufacture of a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprising continuously heating an anhydride with a phenol in the presence of a catalyst and a first co-catalyst, to form a first reaction mixture comprising a phenolphthalein compound; precipitating the phenolphthalein compound; combining a primary arylamine with an acid catalyst and a second co-catalyst to form a second reaction mixture; adding the phenolphthalein compound to the second reaction mixture; continuously heating the second reaction mixture to provide a third reaction mixture comprising a crude phthalimidine; and treating the crude phthalimidine to remove aminophenol and purify the phthalimidine is provided.

Abstract: A method for the purification of a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine of formula (I), the method comprising heating a reaction mixture comprising a phenolphthalein compound of formula (II) and a primary arylamine of formula (III) in the presence of an acid catalyst to form a reaction mixture; removing water from the reaction mixture; quenching the reaction mixture with an aqueous alkali solution to form a quenched reaction mixture; extracting the quenched reaction mixture with an aminoaryl compound of formula (IV) to form an organic layer and an extracted aqueous layer comprising a crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine compound; contacting the extracted aqueous layer with carbon to form a semi-purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidine compound; and mixing the semi-purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidine compound with a solution comprising an alcohol and an acid to form a purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidine of formula (I); wherein formulas (I), (II), (III), and (I

Abstract: A continuous method for the manufacture of a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprising continuously heating an anhydride with a phenol in the presence of a catalyst and a first co-catalyst, to form a first reaction mixture comprising a phenolphthalein compound; precipitating the phenolphthalein compound; combining a primary arylamine with an acid catalyst and a second co-catalyst to form a second reaction mixture; adding the phenolphthalein compound to the second reaction mixture; continuously heating the second reaction mixture to provide a third reaction mixture comprising a crude phthalimidine; and treating the crude phthalimidine to remove aminophenol and purify the phthalimidine is provided.