| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a filler that is easily available and can be manufactured relatively easily, and a composition containing the filler.SOLUTION: A filler according to the present invention is obtained by crushing petroleum coke. The filler according to the present invention preferably has average particle diameter of 100μm or less. A composition according to the present invention contains at least one material selected from the group consisting of rubber and resin, and the filler according to the present invention.</p> |
