| 摘要 |
<p>A peroxide-crosslinked rubber composition having a superior anti-blooming property of a crosslinking agent and a high hardness containing (A) more than 60 parts by weight but not more than 95 parts by weight of rubber selected from NR, IR, SBR, BR, EPM, EPDM, silicone rubber and/or fluororubber and (B) 5 parts by weight but less than 40 parts by weight of a polar polymer having a solubility parameter (Sp value) of at least 17.6 (Pa 1/2 ) and a weight average molecular weight of at least 100,000.</p> |
