Solidifying and hardening accelerator for hydraulic binders
    5.
    发明授权
    Solidifying and hardening accelerator for hydraulic binders 有权
    水硬性粘合剂的固化和硬化促进剂

    公开(公告)号:US06302954B1

    公开(公告)日:2001-10-16

    申请号:US09297131

    申请日:1999-08-20

    IPC分类号: C04B2404

    摘要: A solidification and curing accelerator for hydraulic binders produced by a process including providing a reaction mixture composed of constituents (a) - (e) as follows: (a) at least one of basic aluminum salts which are substantially water insoluble and aluminum hydroxide; (b) at least one of aluminum sulfate which is substantially water soluble and sulfuric acid; (c) at least one of an organic carboxylic acid or mixtures of at least two organic carboxylic acids; (d) aluminum salts of organic carboxylic acids; and (e) at least one organic and inorganic substance selected from the group consisting of sulfates, hydrogen-sulfates, carbonates, hydrogen-carbonates, alkaline earth metal oxides, and alkaline earth metal hydroxides; adding water to the reaction mixture and reacting at a temperature ranging up to 150 ° C. for a time effective to provide a reaction product which is a solution in water.

    摘要翻译: 一种水硬性粘合剂的固化和固化促进剂,其通过包括提供由以下组分(a) - (e)组成的反应混合物的方法制备:(a)基本上不溶于水的碱性铝盐和氢氧化铝中的至少一种; (b)基本上为水溶性的硫酸铝和硫酸中的至少一种; (c)至少一种有机羧酸或至少两种有机羧酸的混合物; (d)有机羧酸的铝盐; 和(e)至少一种选自硫酸盐,硫酸氢盐,碳酸盐,碳酸氢盐,碱土金属氧化物和碱土金属氢氧化物的有机和无机物质; 向反应混合物中加入水,并在高达150℃的温度下反应一段时间,以提供作为水溶液的反应产物。

    Use of basic aluminium sulphates as low-alkali set accelerators for
cement
    6.
    发明授权
    Use of basic aluminium sulphates as low-alkali set accelerators for cement 失效
    使用碱性硫酸铝作为水泥的低碱凝固加速剂

    公开(公告)号:US5660625A

    公开(公告)日:1997-08-26

    申请号:US586688

    申请日:1996-01-24

    IPC分类号: C01F7/74 C04B22/14 C04B103/10

    CPC分类号: C04B22/148 C04B2103/10

    摘要: Improved set accelerating mixtures and their use are disclosed to shorten the period after mixing hydraulically setting building materials, for example cement, up to the transition into the solid phase. The improved set accelerating mixtures comprise basic aluminum sulphates of the formula: Al(OH).sub.a (SO.sub.4).sub.b, in which the subscripts satisfy the conditions:a=3-2b and b=0.05 to 0.4.These basic aluminum sulphates are produced by parallel precipitation from solutions containing aluminum at temperatures usually less than 60.degree. C. by mixing dilute acid solutions and alkaline solutions containing sulphates in the pH range from 5.0 to 8.0 to produce an amorphous, basic aluminum sulphate.

    摘要翻译: PCT No.PCT / EP94 / 02190 371日期:1996年1月24日 102(e)日期1996年1月24日PCT 1994年7月5日PCT公布。 公开号WO95 / 03257 日期1995年2月2日公开了改进的加速混合物及其用途,以缩短混合水硬性建筑材料(例如水泥)直到固相的过渡期。 改进的组合加速混合物包括下式的碱式硫酸铝:Al(OH)a(SO 4)b,其中下标满足条件:a = 3-2b和b = 0.05〜0.4。这些碱性硫酸铝由 通过在5.0至8.0的pH范围内混合稀酸溶液和含有硫酸盐的碱性溶液,通常在低于60℃的温度下从含有铝的溶液中平行析出,以产生无定形碱性硫酸铝。