Method of devulcanizing vulcanized rubber
AssigneeSociete Plymouth Francaise
InventorDaniel Arnaud
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Abstract
A method of devulcanizing vulcanized rubber is described. The method includes steps of: (a) providing at least one vulcanized rubber composition; (b) grinding the vulcanized rubber into chips or pellets; (c) mixing the ground rubber obtained from step (b) in such a way as to homogenize the form and temperature of same; (d) carrying out a non-degrading mechanical treatment on the mixed rubber at the end of step (c) to obtain a polymeric composite. Also described is a thermoplastic material and an elastomeric mixture which comprise, in the formulation of same, at least one polymeric composite obtained by this method of devulcanization.
Claims9
A method of devulcanizing a vulcanized rubber comprising:
- a) providing at least one vulcanized rubber;
- b) grinding the vulcanized rubber into chips or aggregates;
- c) kneading at a low rate of shear ranging from about 100 s−1 to about 500 s−1 the ground rubber obtained from step b) in such a manner as to homogenize it in size of aggregates and temperature;
- d) kneading the product of step (c) to a high rate of shear ranging between 103 s−1 and 106 s−1 thereby obtaining a polymeric composite.
Dependencies are inferred from the claim text.