abstract |
ABSTRACT Provided is a foamable polyester resin composition and a method for making the same. The composition comprises (a) a liquid unsaturated polyester resin, (b) an azocarboxylate, (c) an organic peroxide or hydro-peroxide, (d) a proton donor, (e) a metal promoter, (f) optionally a surfactant, and (g) optionally a filler. |