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    • 4. 发明申请
    • Cross-linkable rubber composition and cross-linked product
    • 可交联橡胶组合物和交联产物
    • US20070037930A1
    • 2007-02-15
    • US10574009
    • 2004-09-29
    • Yoshiyuki OdagawaAkira ImadaNobuyoshi Emori
    • Yoshiyuki OdagawaAkira ImadaNobuyoshi Emori
    • C08F8/00
    • C08K5/0025C08L13/00
    • A cross-linkable rubber composition comprised of a mixture of a carboxyl group-containing nitrile copolymer rubber (A) with a carboxyl group content per 100 g of 2×10−3 to 1×10−1 equivalents and a carboxyl group-containing acryl-based polymer (B) with a carboxyl group content per 100 g of 4×10−4 to 1×10−1 equivalents in a weight ratio A:B=40:60 to 90:10 into which a cross-linking agent (C) able to cross-link the carboxyl groups of both the nitrile copolymer rubber (A) and the acryl-based polymer (B) is blended, the amount blended of the cross-linking agent (C), converted to equivalents of functional groups able to react with carboxyl groups in the cross-linking agent, being 0.3 to 3 times equivalents of the total content of both the carboxyl groups of the nitrile copolymer rubber (A) and the acryl-based polymer (B) is used. According to the present invention, a cross-linkable rubber composition giving a cross-linked product superior in not only mechanical property, such as tensile strength and low compression set, and oil resistance, but also high weathering resistance, such as dynamic ozone resistance, and high mechanical property, such as flexural fatigue resistance can be provided.
    • 一种可交联橡胶组合物,其由含有羧基的腈共聚物橡胶(A)与每100g 2×10 -3〜1×10 -1 -1的羧基含量的混合物组成, SUP +当量和含有羧基含量的丙烯酸系聚合物(B),每克重量为4×10 -4〜1×10 -6当量的羧基含量 比例A:B = 40:60〜90:10,其中可以交联腈共聚物橡胶(A)和丙烯酸类聚合物(B)的羧基的交联剂(C)共混 交联剂(C)的混合量相对于交联剂中与羧基反应的官能团的当量为相当于所述交联剂的两个羧基的总含量的0.3〜3倍 腈共聚物橡胶(A)和丙烯酸类聚合物(B)。 根据本发明,提供了不仅具有抗拉强度和低压缩变形等机械性能优异的交联产物和耐油性,而且耐候性高的耐交联性橡胶组合物,例如动态耐臭氧性, 并且可以提供诸如抗弯曲疲劳性的高机械性能。