Application of polystyrene peroxide as a curative in coating and molding compositions

Abstract

An attempt has been made to demonstrate the applicability of poly(styrene peroxide) (PSP) as a curative in coating and molding compositions and to compare it with a conventional curative benzoyl peroxide (Bz₂O₂). A typical coating formulation leads to better adhesion on aluminium and glass surfaces with PSP as curative than with Bz₂O₂. Similarly, a typical molding formulation, prepolymerized and cured with PSP under compression at 90 °C, resulted in a colourless, defect-free molding, having better impact and tensile strengths than when using the conventional curative Bz₂O₂, which afforded a brown coloured, brittle product.