Production of 4-hydroxystyrene polymer from 4acetoxystyrene polymer

PURPOSE: To easily and economically obtain a hydroxystyrene polymer by hydrolyzing an acetoxystyrene polymer by using hydroxylamine. CONSTITUTION: A 4-acetoxystyrene polymer pref. being a 4acetoxystyrene homopolymer and/or copolymer is hydrolized by using hydroxyamine pref. in a free base form to obtain the objective 4hydroxystyrene polymer. COPYRIGHT: (C)1992,JPO