Color stabilization of vinyl chloride resins with peroxides and epoxy compounds

摘要

The discoloration that vinyl chloride resins usually undergo when a slurry containing one of these resins is heated at a temperature above 70 DEG C. to reduce its monomer content to less than 10 ppm is minimized or prevented by carrying out the heating step in the presence of a monomer-miscible color stabilizer that comprises an epoxide and an organic peroxide.