| 摘要 |
<p>Provided is a natural rubber, a natural rubber manufacturing method, a rubber composition using the same, and a tire using the same. Heat-resistant and degradation characteristics of the natural rubber are improved by keeping the ash content of a metal composition contained in the natural rubber below a certain level. The natural rubber of the present invention has 0.15% or less by mass of an ash. According to the natural rubber manufacturing method of the present invention, natural rubber latex is aged for at least 12 hours from tapping, the latex is separated by a mechanical separation medium so that the ash content in the natural rubber becomes 0.15% or less by mass, and the latex is solidified and dried.</p> |
