DEVULCANIZING AGENT FOR PRODUCTION OF RECLAIM RUBBER POWDER

摘要

The present invention relates to a chemical composition of a devulcanizing agent which is used to reclaim waste rubber by mechanical shearing until fine powder is produced. The devulcanizing agent contains two types of components: 1) amino acids, amides or similar carbonyl and amine or amide group containing organic compounds as Reactants for delocalization of sulfur crosslinks and 2) ashless inorganic salts as Anti-Stick additives for subsequent size reduction of rubber particles and preventing them from sticking. In a form of powder the reclaim rubber shows much better technical properties than in a form of sheet, bale or other bulk solid.

主权项

1. A devulcanizing agent for processing of waste rubber and other elastomers, the devulcanizing agent comprising:
component A, which comprises an organic compound containing at least one of a carbonyl, and amide functional group, wherein molecules of component A are configured penetrate into a rubber matrix and destabilize S—S and S—C bonds; and component B, which is selected from a solid ashless inorganic salt of ammonium, a solid ashless salt of hydrazonium, and mixtures thereof, wherein component B is configured to increase shearing between rubber polymers during mechanical action in processing with the devulcanizing agent and to reduce sticking between particles of fragmented rubber.