Ozonation of Butyl Rubber to Estimate Unsaturation

Abstract A method has been developed for the estimation of the unsaturation of butyl rubber by ozonation in selected solvents. Under a given set of conditions the ozonation method is reproducible to within 7 per cent and conceivably could be improved by further refinement. The unsaturation of a butyl rubber can be estimated in about 10 minutes when using ozonated oxygen and in about 15 minutes when using ozonated air.