Patent ID: 8857482
Filing Date: 2014-10-14
Classification: B60C,C08C,C08L,Y02T,Y10T

Abstract:
1. A method for producing a heavy-load tire having a tread, said method comprising the steps of: (A) saponifying natural rubber latex to prepare a saponified natural rubber latex; (B) coagulating the saponified natural rubber latex and treating the resulting coagulated rubber with at least one alkali selected from the group consisting of potassium carbonate, sodium carbonate, sodium hydrogen carbonate, and ammonia water; (C) washing the resultant rubber until the phosphorus content of rubber reaches 200 ppm or less to produce said modified natural rubber; (D) mixing carbon black with said modified natural rubber; and (E) forming a heavy-load tire from the modified natural rubber and the carbon black.