DEVULCANIZATION PRODUCT CONSISTING OF SCRAP RUBBER, A DEVULCANIZATION COMPOUND, A METHOD FOR PRODUCING SAME, THE REUSE THEREOF IN FRESH MIXTURES AND THE USE THEREOF FOR PRODUCING INJECTION MOLDED PARTS

摘要

The invention relates to a devulcanisation product consisting of waste ofvulcanised rubber having different elastomer bases. The invention also relatesto devulcanisation compounds produced therefrom, a method for the productionthereof and the use of the devulcanisation product in fresh mixtures. Theinvention further relates to the devulcanisation compound for producinginjection moulded rubber parts. According to the invention, thedevulcanisation product consists of disintegrated scrap rubber and adevulcanisation compound produced therefrom. The disintegrated scrap rubber(powders, granules, etc.) are gently devulcanised on the surface thereof andare thus reactivated for a new vulcanisation. The poly-, bi- or monosulphidicsulphur bridges of the caoutchouc matrix pertaining to the surface of thedisintegrated scrap rubber are broken and activated for new vulcanisation,whereby the length of the macromolecules of the elastomer base pertaining tothe rubber and the characteristics of the source material are maintained.