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    • 7. 发明申请
    • Block copolymer, rubber composition containing the same and molded product
    • 嵌段共聚物,含有它们的橡胶组合物和模塑产品
    • US20060106150A1
    • 2006-05-18
    • US11260204
    • 2005-10-28
    • Toshihiro TadakiNaokazu KobayashiIwakazu Hattori
    • Toshihiro TadakiNaokazu KobayashiIwakazu Hattori
    • C08K3/34
    • C08F297/046C08F8/04C08F297/04
    • An objective of the present invention is to provide a block copolymer which is excellent in processability at the time of preparing a rubber composition and leads to a cross-linked rubber composition excellent in tensile property, wearing resistance, weatherability, ozone resistance and heat aging resistance when it is cross-linked, a rubber composition containing the block copolymer and a molded product. The block copolymer of the present invention comprises two polymer blocks each having an ethylenic unsaturated bond and other polymer block which is interposed between two polymer blocks, has a uniform weight average molecular weight in the range from 5,000 to 100,000. The weight average molecular weight of the polymer block having the ethylenic unsaturated bond is preferably in the range from 1,000 to 20,000.
    • 本发明的目的是提供一种在制备橡胶组合物时加工性优异并导致拉伸性,耐磨性,耐候性,耐臭氧性和耐热老化性优异的交联橡胶组合物的嵌段共聚物 当交联时,含有嵌段共聚物的橡胶组合物和模塑产品。 本发明的嵌段共聚物包含两个具有烯属不饱和键的聚合物嵌段和介于两个聚合物嵌段之间的其它聚合物嵌段,其重均分子量均匀分布在5,000至100,000的范围内。 具有烯属不饱和键的聚合物嵌段的重均分子量优选为1,000〜20,000。