| 摘要 |
<p>24-51-6462A CN COMPOUNDS USEFUL AS STABILISING AGENTS FOR RUBBER VULCANISATES Additives for rubber compositions, giving vulcanisates having improved retention of optimum physical properties, are compounds having the formula R-S-B-S-R where B is an organic bridging group and R is an electron-withdrawing group, for example CN, CCl3, a radical containing an activated methylene group linked to the sulphur atom or the enolic tautomer of a keto-activated methylene group. Also useful as stabilising agents are oligomeric analogues of such compounds.</p> |
