Patent ID: 8580908

Claim:
A method of reclaiming of a cured elastomer material, comprising the steps of: a) mixing said cured elastomer in form of crumbs or chips with a devulcanization-aiding chemical composition, and b) devulcanizing said cured material by applying a shear-stress deformation to said mixture of the crumbs or chips with a devulcanization-aiding chemical while performing a mechanical disintegration of the cured elastomer into fine-ground crumbs wherein said chemical composition comprises ingredients as follows: (i) a first agent which is selected from the classes of complex compounds formed from amines and sulfides in equimolar ratio; (ii) a second agent which is selected from the classes of organic acids containing an hydroxy radical; (iii) a third agent selected from the class of oxidants, and (iv) a fourth agent selected from oxides of metals with variable valence.