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    • 3. 发明公开
    • A water-absorbing rubber composition
    • 吸水橡胶组合物
    • EP0055848A3
    • 1982-08-04
    • EP81110754
    • 1981-12-23
    • KURARAY CO., LTD.
    • Yoshioka, YoshihiroHarima, Hiroshi
    • C09K03/10C08L21/00
    • C09K3/10C08L21/00C09K2003/1046C09K2200/0607C09K2200/0645C08L2666/02
    • A water-absorbing rubber composition comprising (A) a 1,3-diene rubber with a crystal or glass region content as measured at an ordinary temperature of 5-50% and (B) a highly water-absorbing resin dispersed in the said rubber, the said highly water-absorbing resin being a product of crosslinking of a polymer which contains as monomer component thereof at least 40 mole percent of an a,p-unsaturated compound containing 1 or 2 groups each selected from the class consisting of a carboxyl group and a group convertible to a carboxyl group with at least one crosslinking agent selected from the class consisting of a polyfunctional epoxy compound and a polyamine, the resin being in the form of a powder capable of passing through a 20-mesh Tyler screen and absorbing 20-500 times its own weight of distilled water. The composition can absorb water rapidly and produce a high swelling pressure, and has good durability in the swollen state.
    • 一种吸水橡胶组合物,其包含(A)在5-50%的常温下测得的结晶或玻璃区域含量的1,3-二烯橡胶和(B)分散在所述橡胶中的高吸水性树脂 所述高吸水性树脂是聚合物交联的产物,该聚合物的单体组分含有至少40摩尔%的含有1或2个基团的α,β-不饱和化合物,每个选自羧基 以及可以与选自多官能环氧化合物和多胺的至少一种交联剂一起转化为羧基的基团,该树脂为粉末形式,能够通过20目的泰勒筛并吸收20 -500倍自身重量的蒸馏水。 该组合物可以快速吸收水分并产生高溶胀压力,并且在膨胀状态下具有良好的耐久性。