NEW EPOXY-UNSATURATED POLYESTER RESIN COPOLYMERS

Some fire-resistant epoxy resins known in literature and practice were reviewed. New unsaturated polyester resins with decreasing flammabili ty was reviewed. The main monomers were dibromobutendiol and diallylic ether of dibromoneopentylglycol. The new idea of epoxy resin fire-ret ardance by creating new epoxy resin-unsaturated polyester copolymers w as put forward and then obtained. The reagents were as follows: low-mo lecular epoxy resin, polyamine curing agent, special diazo-epoxy resin , brominated unsaturated polyester resins, styrene or diallylic ether of dibromoneopentylglycol as diluent to obtain optimum viscosity. The proposed mechanism to form three-dimensional copolymer network was pre sented.