Aqueous sulfur dispersion having reduced corrosive activity toward
ferrous metal
    101.
    发明授权
    Aqueous sulfur dispersion having reduced corrosive activity toward ferrous metal 失效
    含水硫分散体对黑色金属具有降低的腐蚀活性

    公开(公告)号:US4321079A

    公开(公告)日:1982-03-23

    申请号:US151882

    申请日:1980-05-21

    申请人: Louis E. Ott

    发明人: Louis E. Ott

    摘要: A dispersion of up to about 70 weight percent elemental sulfur in an aqueous ammonia solution of at least one metal compound selected from the group consisting of soluble zinc and magnesium compounds has reduced corrosive activity toward ferrous metal. The atomic ratio of zinc and/or magnesium to sulfur is from about 0.0002 to about 0.1 and the mole ratio of ammonia to metal compound is from about 0.1 to about 200.

    摘要翻译: 在至少一种选自可溶性锌和镁化合物的金属化合物的氨水溶液中高达约70重量%的元素硫的分散体具有减少对黑色金属的腐蚀活性。 锌和/或镁与硫的原子比为约0.0002至约0.1,氨与金属化合物的摩尔比为约0.1至约200。

    Polyphosphate and polymaleic anhydride combination for treating corrosion
    102.
    发明授权
    Polyphosphate and polymaleic anhydride combination for treating corrosion 失效
    聚磷酸酯和聚马来酸酐组合用于处理腐蚀

    公开(公告)号:US4297237A

    公开(公告)日:1981-10-27

    申请号:US127675

    申请日:1980-03-06

    CPC分类号: C23F11/08

    摘要: A method of inhibiting corrosion in an aqueous system comprising treating said system with 1.0 to 300 parts per million by weight of the total aqueous content of said system, of a composition comprising polyphosphate and polymaleic anhydride or amine adducts thereof in a weight ratio of from 10:1 to 1:10.

    摘要翻译: 一种抑制水性体系中的腐蚀的方法,包括以所述体系的总含水量的重量比为基准,以所述体系的总重量的百万分之300到100重量份,包含多磷酸盐和聚马来酸酐或其胺加合物的组合物的重量比为10 1:1:10。

    Method for inhibiting corrosion in aqueous systems
    104.
    发明授权
    Method for inhibiting corrosion in aqueous systems 失效
    抑制含水体系腐蚀的方法

    公开(公告)号:US4237090A

    公开(公告)日:1980-12-02

    申请号:US960982

    申请日:1978-11-15

    CPC分类号: C23F11/08 C02F1/50 C02F5/125

    摘要: This invention is a method for inhibiting corrosion in aqueous systems containing components composed of aluminum, copper, iron, or alloys thereof. The method comprises (a) incorporating in the aqueous medium 2-10 ppm by weight of tolyltriazole; an effective amount of a biodegradable organic biocide; 500-1000 ppm by weight of sodium metasilicate; 500-2000 ppm by weight of sodium nitrite; and 500-2000 ppm by weight of sodium tetraborate, all of these concentrations being based on the weight of water in the system; and (b) maintaining the pH of the resulting system in the range of 7.5 to 8.0. The method permits longterm operation with very low corrosion rates and bacteria counts. All of the additives to the system are biodegradable, permitting the treated aqueous medium to be discharged to the environment without violating current regulations. The method has special application to solar systems in which an aqueous medium is circulated through aluminum-alloy heat exchangers.

    摘要翻译: 本发明是含有由铝,铜,铁或其合金组成的组分的含水体系中的腐蚀抑制方法。 该方法包括(a)在水性介质中加入2-10重量ppm的甲苯基三唑; 有效量的可生物降解的有机杀生物剂; 500-1000ppm重量的偏硅酸钠; 500-2000ppm重量的亚硝酸钠; 和500-2000重量ppm的四硼酸钠,所有这些浓度均基于体系中水的重量; 和(b)将所得体系的pH值保持在7.5〜8.0的范围内。 该方法允许长期运行,腐蚀速率非常低,细菌计数。 系统中的所有添加剂都是可生物降解的,允许将处理过的水性介质排放到环境中,而不违反现行规定。 该方法特别适用于水性介质通过铝合金热交换器循环的太阳能系统。

    Corrosion inhibiting molybdate pigment and preparation thereof
    107.
    发明授权
    Corrosion inhibiting molybdate pigment and preparation thereof 失效
    腐蚀抑制钼酸盐颜料及其制备

    公开(公告)号:US4132667A

    公开(公告)日:1979-01-02

    申请号:US839564

    申请日:1977-10-05

    摘要: A novel group of corrosion inhibiting pigments has been discovered, which is based on zinc molybdate compounds selected from sodium zinc molybdate, potassium zinc molybdate, ammonium zinc molybdate and mixtures thereof, combined with a suitable carrier, so that the proportion of the zinc molybdate compound is such that the Mo content in the pigment is between about 1 and 30% by weight. Such pigments can be prepared in situ by several methods, such as a double decomposition reaction of sodium, potassium or ammonium molybdate and a solution containing dissolved zinc ion, or an addition of an appropriate acid to zinc oxide dispersed in sodium, potassium or ammonium molybdate solution, or an addition of zinc oxide to a solution which comprises molybdic oxide dissolved in an aqueous solution of sodium, potassium or ammonium molybdate. All these methods are simple, economic and lead to non-toxic pigments of essentially white colour, which have anti-corrosive properties comparable to, or better than, those of zinc yellow and other commercially available corrosion inhibiting pigments.

    摘要翻译: 已经发现了一组新的腐蚀抑制颜料,其基于选自钼酸锌锌,钼酸锌锌,钼酸铵锌及其混合物的钼酸锌化合物,并与合适的载体结合,使得钼酸锌化合物 使得颜料中的Mo含量在约1至30重量%之间。 这样的颜料可以通过几种方法原位制备,例如钼酸钠,钼酸钾或钼酸铵的双重分解反应和含有溶解的锌离子的溶液,或向分散在钼酸钠,钾或铵的氧化锌中加入适当的酸 溶液或氧化锌加入到溶解在钼酸钠,钾或铵的水溶液中的氧化钼的溶液中。 所有这些方法都是简单的,经济的,并且导致基本上为白色的无毒颜料,其具有与锌黄和其它商业上可获得的腐蚀抑制颜料相当或优于其的抗腐蚀性能。

    Corrosion inhibition of stainless steel exposed to hot carbonates
    109.
    发明授权
    Corrosion inhibition of stainless steel exposed to hot carbonates 失效
    暴露于热碳酸盐的不锈钢的腐蚀抑制

    公开(公告)号:US4116629A

    公开(公告)日:1978-09-26

    申请号:US801947

    申请日:1977-05-31

    IPC分类号: C23F11/06 C23F11/18

    CPC分类号: C23F11/06

    摘要: A method for inhibiting the corrosion of martensitic and ferritic stainless steel surfaces which are exposed to hot carbonate solutions which comprises contacting said stainless steel surfaces with nickel ions and preferably with at least 10 ppm of nickel ion contained in the hot alkali metal carbonate solution.

    摘要翻译: 一种用于抑制暴露于热碳酸盐溶液的马氏体和铁素体不锈钢表面的腐蚀的方法,其包括使所述不锈钢表面与镍离子接触,优选与热碱金属碳酸盐溶液中包含的至少10ppm的镍离子接触。

    Method and composition for inhibiting corrosion of metals in contact
with water
    110.
    发明授权
    Method and composition for inhibiting corrosion of metals in contact with water 失效
    用于抑制与水接触的金属腐蚀的方法和组合物

    公开(公告)号:US4105405A

    公开(公告)日:1978-08-08

    申请号:US854029

    申请日:1977-11-22

    CPC分类号: C23F11/08 C23F11/124

    摘要: A method for inhibiting corrosion of non-noble metals in contact with circulating water comprising the steps of adding to circulating water in contact with non-noble metals from 0.5 to 50 gm/m.sup.3 of at least one cyclohexanehexacarboxylic acid and adjusting said water to a pH of from 6 to 9; as well as corrosion inhibitory compositions containing cyclohexanehexacarboxylic acid.

    摘要翻译: 一种抑制与循环水接触的非贵金属的腐蚀的方法,包括以下步骤:向与非贵金属接触的循环水中添加0.5至50gm / m 3的至少一种环己烷六羧酸并将所述水调节至pH 从6到9; 以及含有环己烷六羧酸的腐蚀抑制组合物。