Patent ID: 8044118

Claim:
A process for preparing an oil extended rubber for a tire, comprising: (a) a step of preparing an oil-in-water type emulsion by emulsifying not less than 30% and not more than 80% by weight of a vegetable oil having an iodine value of not less than 135 with not less than 0.1% and not more than 10% by weight of a surfactant, and the remainder water; (b) a step of mixing said emulsion of vegetable oil and a modified natural rubber latex, and then maturing the mixture; and (c) a step of coagulating the mixture obtained in the step (b) to obtain a lump of rubber, wherein the modified natural rubber latex is at least one selected from the group consisting of an epoxidized natural rubber latex, a hydrogenated natural rubber latex and a maleic acid-modified natural rubber latex.