Abstract
New Polymers having hemiacetal ester structures in the main chain were synthesized by the polyaddition of dicarboxylic acids with divinyl ethers in a good yield. The polymers thus obtained gave a variety of mechanical properties and good solubility in organic solvents, as well as good compatibility with various other resins. Further, the thermosetting resins from these polymers, with which epoxy resins were compounded, formed cured tough films in the presence of a Lewis acid catalyst, and were found to be stable under the storage conditions (40°C×30days). They may serve as a novel polymer type latent hardener and be usable as a network polymer in the application fields, such as coatings, ink, adhesives, and underfill materials
