ACID-CATALYZED COPOLYMERIZATION OF WATER AND EPOXY RESIN AND USE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a non-gelled polymeric polyol prepared by the acid-catalyzed copolymerization of an epoxy resin and water. SOLUTION: The non-gelled polymeric polyol has, when the starting resin is an epoxy resin derived from bisphenol-A, much lower levels of bisphenol-A and diglycidyl ether of bisphenol-A (DGEBA) compared to traditional epoxy resins of comparable molecular weight prepared by the advancement process. The product can be cured with OH-reactive crosslinkers such as amino resins and polyisocyanates to yield thermosetting coatings with useful properties. COPYRIGHT: (C)2005,JPO&NCIPI