| 摘要 |
<p>Process for the regenerating of vulcanized rubber, using the combined action of a solvent which has the property of swelling the vulcanized rubber and a material which is deleterious or devulcanizing. As adequate swelling agents for the carrying out of the process, consideration should be given particularly to benzine, toluene, xylene or a mixture of these, as also cyclic and halogenized parafinic solvents. As deleterious material, adequate for the reduction in size of the elastomere particles, the following metals should be considered: copper, manganese, iron, chrome, nickel and cobalt, as well as their alloys and derivates. Adequate devulcanizing agents for use in the present invention are the derivates of guanadine, the derivates of hydrazine and the derivates of phenylhydrozilamine. By the process of the invention, a regeneration of excellent quality is obtained, working at normal temperature and pressure, although an increase of these variables will give a reduction in the time of the operation.</p> |
