| 摘要 |
<p>A curable rubber composition composed of a halogen-containing rubber and at least one member selected from the group consisting of a vulcanizing agent and a vulcanization accelerator other than thiazole-type vulcanization accelerators is cured under heat in the presence of, as an acid acceptor, a hydrotalcite compound of the following formula M?+Al2(OH)2x+6-nz(An-)z?mH2O ..... (1) wherein M2+ represents at least one metal element selected from the group consisting of Mg and Zn, Anrepresents an anion having a valence of n, m represents a positive number, and x and z represent positive numbers satisfying the following expressions 12 > x ? 2, z ? 2, or its calcination product. The cured product has improved water resistance.</p> |
