| abstract |
[Solution] The present disclosure relates to a method of making a thermoplastic vulcanizate comprising the step of dynamically vulcanizing an elastomer using a curing agent in the presence of a thermoplastic resin in an extrusion reactor to form a thermoplastic vulcanizate. . Process oil is added to the extrusion reactor at the first, second and third positions, and the amount of process oil introduced at the first oil injection position is the amount of process oil introduced at the second oil injection position. Less, the third oil injection location is downstream of the location at which the curing agent is introduced into the extrusion reactor, and the thermoplastic vulcanizate contains at least 25% oil by weight based on the weight of the thermoplastic vulcanizate. It is out. [Selection] Figure 1 |