Butyl inner tubes are used as inner tubes and inner liners in tubeless
tyres. After some time it is disposed as waste because its efficiency
has become reduced. Proper disposal or beneficiation of waste inner
butyl tubes are of the great concern, both environmentally and for
resources conservation. An environmentally friendly method for
conversion of used isobutyl isoprene rubber inner butyl tube into useful
products has been investigated. The method is based on catalytic
cracking using batch type reactor. Optimum conditions like temperature,
catalyst weight and reaction time were optimized for maximum conversion
into oil for a variety of catalysts.