Patent ID: 7605216

Claim:
A method of reducing a content of a residual styrene monomer and a residual acrylonitrile monomer in a polyol, said method comprising the steps of: providing the polyol comprising the content of the residual styrene monomer and the residual acrylonitrile monomer; introducing 1,1-Di(tert-amylperoxy)cyclohexane to the polyol to form a mixture after the step of providing the polyol; subsequently raising a temperature of the mixture of the 1-Di(tert-amylperoxy)cyclohexane and the polyol to polymerize the residual styrene monomer in the polyol through reaction of the residual styrene monomer with peroxide radicals present in the 1,1-Di(tert-amylperoxy)cyclohexane and to polymerize the residual acrylonitrile monomer in the polyol through reaction of the residual acrylonitrile monomer with the peroxide radicals; and applying a vacuum to separate the residual styrene monomer from the polyol.