Patent ID: 8813798
Filing Date: 2014-08-26
Classification: B60C,C08C,C08K,C08L,Y10T

Abstract:
1. A method for producing a heavy load tire, said method comprising: a step (A) of saponifying natural rubber latex to prepare a saponified natural rubber latex; a step (B) of coagulating the saponified natural rubber latex and performing an alkali treatment on the resulting coagulated rubber with at least one selected from the group consisting of potassium carbonate, sodium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, lithium carbonate, lithium hydrogen carbonate, and aqueous ammonia; a step (C) of washing the resulting rubber to produce a modified natural rubber until the phosphorus content in rubber falls to not more than 200 ppm; and a step (D) of forming a heavy load tire from the modified natural rubber.