NEW PHOSPHONIC ACID GROUP-CONTAINING BISPHENOL OR BISTHIOPHENOL COMPOUND, METHOD FOR PRODUCING THE SAME, AND APPLICATION THEREOF

摘要

PROBLEM TO BE SOLVED: To provide phosphonic acid group-containing bisphenol or a bisthiophenol derivative capable of introducing a phosphonic acid group into an aromatic polymer such as polyethersulfone.SOLUTION: This invention relates to phosphonic acid group-containing bisphenol or a bisthiophenol compound represented by general formula (1), (in the formula, X represents one of an O-atom, an S-atom, a divalent aromatic, quaternary carbon and a direct bond, Y represents either of an O-atom and an S-atom, and Z represents H or monovalent cation).