Superabsorbent polymers
    1.
    发明授权
    Superabsorbent polymers 失效
    超吸收性聚合物

    公开(公告)号:US4921904A

    公开(公告)日:1990-05-01

    申请号:US286106

    申请日:1988-12-19

    IPC分类号: C08F8/32

    CPC分类号: C08F8/32 C08F2810/20

    摘要: A substantially water-insoluble, slightly cross-linked, partially neutralized, hydrogen-forming polymer composition consisting essentially of(a) from about 50 mole percent to 99.999 mole percent of polymerizable acid group-containing monomers, and(b) from about 0.001 mole percent to 10 mole percent of a water-soluble polyamine;said hydrogel-forming polymer composition having been formed by reacting a water-soluble acid group-containing vinyl polymer with a water-soluble polyamine at a temperature sufficient to convert the substantial portion of the amino groups of the water-soluble polyamine into amido groups.

    摘要翻译: 基本上不溶于水的,轻微交联的部分中和的氢形成聚合物组合物,其基本上由(a)约50摩尔%至99.999摩尔%的可聚合酸基单体组成,和(b)约0.001摩尔 百分之十至10摩尔%的水溶性多胺; 所述水凝胶形成聚合物组合物是通过使水溶性含酸基的乙烯基聚合物与水溶性多胺在足以将水溶性多胺的大部分氨基转化成酰胺基的温度下反应形成的。

    Carbon steel corrosion inhibitors
    2.
    发明授权
    Carbon steel corrosion inhibitors 失效
    碳钢腐蚀抑制剂

    公开(公告)号:US5589106A

    公开(公告)日:1996-12-31

    申请号:US388546

    申请日:1995-02-14

    CPC分类号: C23F11/08

    摘要: The prevention of corrosion on the surfaces of metallic pipes, heat exchangers, and the like which are in contact with industrial cooling waters, and particularly industrial cooling waters containing low levels of hardness is controlled utilizing a corrosion inhibiting amount of a composition including an alkali metal silicate, a hydroxycarboxylic acid or its water soluble salts, an organophosphonate, and a water soluble polymer which acts as a dispersant. Superior corrosion inhibition is achieved using the compositions of this invention as corrosion inhibitors, particularly in cooling water systems employing mild steel metallurgy.

    摘要翻译: 使用腐蚀抑制量的包含碱金属的组合物来控制与工业冷却水接触的金属管,热交换器等的表面,特别是含有低硬度的工业冷却水的防腐蚀 硅酸盐,羟基羧酸或其水溶性盐,有机膦酸盐和作为分散剂的水溶性聚合物。 使用本发明的组合物作为腐蚀抑制剂,特别是在采用低碳钢冶炼的冷却水系统中,实现了优异的腐蚀抑制。

    Autocycle control of cooling water systems
    3.
    发明授权
    Autocycle control of cooling water systems 有权
    自动循环控制冷却水系统

    公开(公告)号:US06280635B1

    公开(公告)日:2001-08-28

    申请号:US09562603

    申请日:2000-05-01

    IPC分类号: C02F100

    摘要: An autocycle method to control a cooling water system comprising the steps of: a) adding a treatment product to said cooling water system, with said treatment product comprising inert tracer and tagged treatment polymer in a set proportion; b) providing a sufficient number of fluorometers, c) using said sufficient number of fluorometers to measure the fluorescent signal of said inert tracer and the fluorescent signal of said tagged treatment polymer in the water from the cooling water system; d) using these measured fluorescent signals from step c) to determine the amount of said tagged treatment polymer present in said cooling water system; e) comparing the amount of said tagged treatment polymer present to the amount of tagged treatment polymer being fed into the system to determine the consumption of said tagged treatment polymer; and f) using said consumption of said tagged treatment polymer to control the concentration cycles of said cooling water system, with the proviso that said control is implemented by linking any or all of the following parameters i) the flowrate of the make-up water to the cooling water system; ii) the flowrate of the treatment product comprising inert tracer and tagged treatment polymer, iii) frequency and amount of blowdown flowrate from the cooling water system; iv) overall water flowrate through the cooling tower; v) overall volume of water in the cooling tower; and vi) composition of makeup water; to the consumption of said tagged treatment polymer, with the provisos that: &agr;) the minimum flowrate of treatment product comprising inert tracer and tagged treatment polymer must be sufficient to supply the cooling water system with the requisite amount of tagged treatment product; and &bgr;) when control is implemented by linking flowrates, the flowrates are balanced.

    摘要翻译: 一种用于控制冷却水系统的自动循环方法,包括以下步骤:a)向所述冷却水系统中加入处理产物,所述处理产物包含惰性示踪剂和标记处理聚合物,其设定比例; b)提供足够数量的荧光计 c)使用所述足够数量的荧光计测量来自冷却水系统的所述惰性示踪剂的荧光信号和所述标记的处理聚合物的荧光信号; d)使用来自步骤c)的这些测量的荧光信号来确定 存在于所述冷却水体系中的所述标记的处理聚合物的量; e)将所述标记的处理聚合物的存在量与进料到系统中的标记处理聚合物的量进行比较,以确定所述标记的处理聚合物的消耗; 以及f)使用所述标记的处理聚合物的所述消耗来控制所述冷却水系统的浓缩循环,条件是通过将补充水的流量与冷却水的任何或全部连接来实现所述控制 水系统; ii)包含惰性示踪剂和标记处理聚合物的处理产品的流量,iii)来自冷却水系统的排放流量的频率和量; iv)通过冷却塔的总体水流量; v)总体积的水 冷却塔; 和)维生素水的组成;对所述标记的处理聚合物的消耗,条件是:α)包含惰性示踪剂和带标签的处理聚合物的处理产物的最小流速必须足以向冷却水系统提供必需量的 标记治疗产品; andbeta)当通过连接流量来实现控制时,流量平衡。