Thermal decomposition method of used rubber and rubber material for thermal decomposition
AssigneeBridgestone Corporation
InventorsTakayuki NASHI, Masahiro HOJO
Life of this patent
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Abstract
Provided is a thermal decomposition method of used rubber that has excellent yields of isoprene and limonene without reducing the efficiency of thermal decomposition. The method is a method of thermally decomposing used rubber, including bringing the used rubber into contact with or swelling the used rubber in a medium, where the medium has a SP value of 8.3 (cal/cm3)1/2 to 11 (cal/cm3)1/2 and an endothermic peak temperature of 235° C. or higher measured by thermogravimetry (TGA), and the medium is liquid at 150° C., and then performing thermal decomposition.
Claims17
A thermal decomposition method of used rubber, which is a method of thermally decomposing used rubber, comprising:
- bringing the used rubber into contact with or swelling the used rubber in a medium, where the medium has a SP value of 8.3 (cal/cm3)1/2 to 11 (cal/cm3)1/2 and an endothermic peak temperature of 235° C. or higher measured by thermogravimetry (TGA), and the medium is liquid at 150° C., and
- then performing thermal decomposition.
A rubber material for thermal decomposition, comprising:
- a rubber comprising at least one type of elastomer selected from an isoprene-skeleton elastomer, a butadiene-skeleton elastomer, and a styrene-skeleton elastomer, and
- a medium having a SP value of 8.3 (cal/cm3)1/2 to 11 (cal/cm3)1/2 and an endothermic peak temperature of 380° C. or higher measured by thermogravimetry (TGA), which is liquid at 150° C.
Dependencies are inferred from the claim text.