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    • 8. 发明专利
    • Water-based resin dispersion for cement mortar and composition for the same
    • 水泥浆及其组合物的水基树脂分散体
    • JP2008081368A
    • 2008-04-10
    • JP2006263996
    • 2006-09-28
    • Asahi Kasei Chemicals Corp旭化成ケミカルズ株式会社
    • IGARASHI YOSHIMITSUOTSUKA MASAHIKO
    • C04B24/26C04B22/06C04B22/10C04B24/04C04B28/02C08F2/22C08F220/00
    • C04B40/0039C04B2103/0065C04B2103/0082C04B2103/65C04B24/2641C04B24/2688C04B28/02
    • PROBLEM TO BE SOLVED: To provide a water-based resin dispersion for a resin mortar composition containing cement and a filler, the water-based resin dispersion having excellent blending stability, providing a hardened material with excellent bending or compression strength, excellent environmental resistance and water resistance without causing cement hardening delay.
      SOLUTION: The water-based resin composition contains: a polymer (1) obtained by emulsion-polymerizing a monomer composition (m1) containing an ethylenic unsaturated carboxylic acid monomer (a), an aromatic vinyl monomer (b) and a (metha)acrylic acid ester monomer (c) and having -10 to 30°C glass transition temperature Tg1; and a polymer (2) obtained by emulsion-polymerizing a monomer composition (m2) containing the ethylenic unsaturated carboxylic acid monomer (a) and the (metha)acrylic acid ester monomer (c) and having 20-60°C glass transition temperature Tg2, wherein Tg1
    • 解决问题的方案为了提供含有水泥和填料的树脂砂浆组合物的水性树脂分散体,具有优异的混合稳定性的水性树脂分散体,提供优异的弯曲或抗压强度的硬化材料,优异的 耐环境性和耐水性,不会导致水泥硬化延迟。 水溶性树脂组合物含有:将含有乙烯性不饱和羧酸单体(a),芳香族乙烯基单体(b)和(b))的单体组合物(m1)进行乳液聚合得到的聚合物(1) 甲基)丙烯酸酯单体(c),并且具有-10至30℃的玻璃化转变温度Tg1; 和通过使含有烯属不饱和羧酸单体(a)和(甲基)丙烯酸酯单体(c)的单体组合物(m2)乳液聚合而得到的具有20-60℃玻璃化转变温度Tg2的聚合物(2) ,其中Tg1