Hydrophilic acrylic resins and waterborne coating composition containing same

摘要

A hydrophilic acrylic copolymer contains as monomer constituents thereof (a) an acrylic monomer having a hydroxyalkylcarbonate group which is an addition reaction product of a hydroxyalkyl (meth)acrylate or its adduct with epsilon -caprolactone and a cyclic alkylenecarbonate, and (b) an acid group-containing monomer. The copolymer is dispersed in an aqueous medium containing a neutralizing base together with a crosslinker to prepare a thermosetting waterborne coating composition.