Unsaturated polyester composition for autobody repair with improved adhesion to metal substrates

Abstract

A vehicle body repair formulation is provided that includes a polyester resin having a degree of unsaturation of between 25 and 100 molecule percent based on total acid and anhydride content. The polyester resin is dissolved or suspended in a monomer reactive diluent. Microspheroids are provided to enhance the sandability of a cured formulation. An initiator package is also provided. The reactive diluent/monomer can be chosen to be non-stryrenic to improve performance properties. A process for repairing a vehicle body is provided using ambient conditions alone or in combination with thermal source to aid in cure after applied to the vehicle body in need of repair.

Dependencies are inferred from the claim text.