t-Butyl Perbenzoate (another name it goes by is t-Butyl Peroxybenzoate) is usually stored refridgerated because it contains a temperature sensitive peroxide group. One use of this is to cure unsaturated polyesters resins (UPR) i.e. the type of resins used in fibre glass applications. Can also be used to polymerize acrylic monomers to make acrylic resins. When heated the peroxide group is cleaved to form free radicals which then initiates the free radical polymerisation of unsaturated materials like the fibre glass resins. By itself this chemical will have not much value for use on stators, will be used inconjunction with an unsaturated resin. 15 years now since I worked for the big European UPR manufactures including TOTAL, Cray Valley, CCP(USA) and Arkema.