Patent ID: 6924319
Filing Date: 2005-08-02
Classification: C08J,Y02W

Abstract:
1. A devulcanization product of comminuted scrap rubber comprised of rubber granules, in which devulcanization product sulfur bridges of the granule surface of the rubber granules are broken and activated for a new vulcanization, the devulcanization product produced by, treating the rubber granules to swell a rubber structure of the granule surface of the rubber granules; admixing a chemically reductive devulcanization formulation to the rubber granules with the swelled rubber structure; acting mechanically on the rubber granules in a heating and cooling mixer combination and allowing the devulcanization formulation to cleave chemically reductively sulfur bridges of the granule surface, while the rubber granules and the devulcanization formulation reach a transfer temperature of 105° C. to 150° C.; and subsequently immediately cooling the rubber granules and the devulcanization formulation.