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Process for the purification of photo acid generator; Iodonium-[4-(1-methylethyl)phenyl][4-methylphenyl]tetrakis(pentafluorophenyl)]borate.

IP.com Disclosure Number: IPCOM000012224D
Publication Date: 2003-Apr-18

Publishing Venue

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Abstract

Abstract: This invention relates to a process for the purification of Iodonium-[4-(1-methylethyl)phenyl][4-methylphenyl]tetrakis(pentafluorophenyl)]borate, (CAS No. 178233-72-2), a photoacid generator (PAG) sold commercially as Rhodorsil PI-2074. This process yields the PAG as a purified crystalline solid with improved solubility in epoxy functional monomers and improved epoxy formulation stability.