Oxidative distillation of rubber vulcanizate

Abstract

Abstract THIS INVENTION RELATES TO OXIDATIVE DISTILLATION OF SYNTHETIC RUBBER VULBANIZATES (WITH AND WITHOUT NATURAL RUBBER) AND PARTICULARLY TIRES, AND OBTAINING THEREFROM VOLATILE MATTER AND RESIDUE. IT ALSO INCLUDES THE OXIDATIVE DISTILLATION OF THE SCRAP OF UNVULCANIZED SYNTHETIC RUBBERS AND THE PRODUCTION OF SOMEWHAT DIFFERENT VOLATILE MATTER AND DIFFERENT RESIDUE. BOTH VOLATILE MATTERS AND RESIDUES MAY BE USED FOR THE PURPOSES INDICATED BELOW. THE VOLATILE MATTER YIELDS GASEOUS MATERIALS AND AN OIL. THE OIL COMPRISES A COMPLEX MIXTURE OF ALIPHATIC OLEFINIC AND AROMATIC HYDROCARBON AND OXIDATION PRODUCTS THEREOF. INCLUDED ARE MONOMERS, FOR EXAMPLE BUTADIENE AND/OR ISOPRENE AND/OR STYRENE, AND/OR ISOBUTYLENE DEPENDING UPON THE COMPOSITION OF THE RUBBER THAT IS DISTILLED. ONE OR MORE OIL FRACTIONS MAY BE COLLECTED. THEY MAY BE POLYMERIZED TO MAKE A PLASTIC RESIN SUITABLE FOR MOLDING, ETC. ON HYDROGENATION THE OIL WILL FORM A FUEL SUITABLE FOR INTERNAL COMBUSTION ENGINES. IT MAY BE USED AS A FUEL FOR THE RUBBER DISTILLATION AND ELSEWHERE. THE VOLATILE MATERIAL MAY BE USED AS A FEED STOCK FOR A CRACKING OPERATION IN THE PRODUCTION OF ETHYLENE, PROPYLENE, ETC. RESIDUAL MATERIAL AS RECOVERED FROM THE RETORT MAY BE USED AS A REINFORCING AGENT OR FILLER FOR RUBBER VULCANIZATE, A FILTERING AGENT FOR THE PURIFICATION OF WATER, DECOLORIZING ORGANIC MATERIALS, SEWAGE TREATMENT, ETC. THE GAS FROM BOTH POLYMER AND VULCANIZATE DISTILLATION INCLUDES A SUBSTANTIAL AMOUNT OF BUTADIENE, AND ISOPRENE MONOMERS.

Inventors

• 👤 Joseph A Beckman
• 👤 Edward L Kay

Bibliographic Details