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    • 9. 发明申请
    • CONCRETE HARDENING RETARDER
    • 混凝土加固剂
    • WO99040041A1
    • 1999-08-12
    • PCT/JP1999/000516
    • 1999-02-05
    • C04B24/26C04B24/28C04B41/53
    • C04B41/5323C04B24/26C04B24/283C04B2103/20Y10T428/28Y10T428/31786
    • A concrete hardening retarder which comprises a polymer (A) having the ability to retard concrete hardening. The polymer (A) comprises structural units derived from an ingredient capable of bringing about a glass transition temperature (Tg) of -5 DEG C or lower. The retarder has a surface tension of 45 mN/m or lower. The content of those units is about 10 wt.% or higher based on the whole polymer (A). The polymer (A) has a functional group capable of forming a salt with a metal ion (especially a free acid group or a group capable of generating an acid group through hydrolysis). The polymer (A) may be a vinyl polymer, a polyester (saturated or unsaturated polyester), or a cross-linked or graft polymer obtained from an unsaturated polyester. A sheet or decorative-material pack may be formed from the retarder. Use of the retarder, sheet, pack, or the like is effective in improving stain removability from the surface of the concrete panel having tiles attached thereto beforehand, the suitability of a concrete surface for washing finish, and the state of the finished surface.
    • 一种具有延缓混凝土硬化的能力的聚合物(A)的混凝土硬化缓凝剂。 聚合物(A)包含衍生自能够使玻璃化转变温度(Tg)为-5℃以下的成分的结构单元。 缓凝剂的表面张力为45mN / m以下。 基于全部聚合物(A),这些单元的含量为约10重量%以上。 聚合物(A)具有能够与金属离子(特别是游离酸基或通过水解产生酸基的基团)形成盐的官能团。 聚合物(A)可以是乙烯基聚合物,聚酯(饱和或不饱和聚酯)或由不饱和聚酯获得的交联或接枝聚合物。 可以由延迟器形成片材或装饰材料包装。 缓凝剂,片材,包装等的使用有效地改善了具有预先附着在其上的瓦片的混凝土板的表面的污渍去除性,混凝土表面对洗涤完成的适用性和成品表面的状态。