Process for producing alkoxylated resol type phenolic resin, alkoxylated resol type phenolic resin, resin composition and paint

摘要

The present invention is to obtain a curing agent (alkoxylated resol type phenol resin) capable of obtaining a coating film excellent in hot water resistance, processability and adhesion to metal without being limited to a bisphenol A type epoxy resin as a main agent. For the purpose, a phenol (a1) containing methresole and an aldehyde (a2) are reacted in the presence of a basic compound to obtain a resol type phenol resin (A), and then the resol type phenol resin (A). And an alcohol (B) are reacted in the presence of an acidic compound having an acid dissociation constant (pKa) of 0 or less, and a method for producing an alkoxylated resol type phenol resin is provided.