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公开(公告)号：US5352296A
公开(公告)日：1994-10-04
申请号：US956737
申请日：1992-10-02
申请人： Klaus Wittel , Georg Blumlhuber
发明人： Klaus Wittel , Georg Blumlhuber
摘要： In a process of cleaning metal surfaces with aqueous alkaline cleaning solutions, which contain silicates and surfactants and are recycled after ultrafiltration, a solution is employed which contains silicate only as a sodium silicate and/or potassium silicate of the formula Na.sub.2 O.2SiO.sub.2.xH.sub.2 O and/or K.sub.2 O.2SiO.sub.2.xH.sub.2 O. The cleaning solution is preferably adjusted to a pH value between 7 and 12 and to a concentration (expressed as SiO.sub.2) of 0.1 to 20, particularly 0.5 to 10 g, silicate per liter.
摘要翻译： 在用含有硅酸盐和表面活性剂并在超滤之后再循环的含水碱性清洁溶液清洗金属表面的过程中，使用的溶液仅含有硅酸钠和/或式Na 2 O 2·SiO 2·xH 2 O的硅酸钾和/ /或K2O.2SiO2.xH2O。 清洗溶液优选调节至7至12的pH值，并将浓度（以SiO2表示）为0.1至20，特别是0.5至10g，每升硅酸盐。
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公开(公告)号：US5688340A
公开(公告)日：1997-11-18
申请号：US517816
申请日：1995-08-22
摘要： Disclosed is a process in which a phosphate layer is formed on a metal surface in preparation for the subsequent application of a vitreous enamel coating, wherein a phosphating solution is used which contains essentially nickel and/or cobalt as a layer-forming cation in amounts of 0.5 to 3 g/l as well as 5 to 20 g/l phosphate (calculated as P.sub.2 O.sub.5), 0.1 to 0.5 g/l molybdate (calculated as MoO.sub.3), 0.2 to 2 g/l fluoride (calculated as F), 1 to 10 g/l nitrate (calculated as NO.sub.3), and optionally also 0.1 to 5 g/l urea. It is particularly desirable to use essentially zinc-free phosphating solutions at temperatures preferably of 60.degree. to 70.degree. C. for 2 to 12 minutes to form a phosphate layer having a coating weight of 1.0 to 2.0 g/m.sup.2.
摘要翻译： 公开了一种在金属表面上形成磷酸盐层以制备随后应用玻璃质搪瓷涂层的方法，其中使用磷酸盐溶液，其基本上含有镍和/或钴作为成层阳离子，其量为 0.5至3g / l和5至20g / l磷酸盐（以P2O5计算），0.1至0.5g / l钼酸盐（以MoO 3计），0.2至2g / l氟化物（F计算），1至 10克/升硝酸盐（以NO 3计算），以及任选地还含0.1至5克/升尿素。 特别希望在优选60℃至70℃的温度下使用基本上不含锌的磷酸盐溶液2至12分钟，以形成涂层重量为1.0至2.0g / m 2的磷酸盐层。
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公开(公告)号：US5152849A
公开(公告)日：1992-10-06
申请号：US683106
申请日：1991-04-10
申请人： Klaus Bittner , Gerhard Muller , Werner Rausch , Klaus Wittel
发明人： Klaus Bittner , Gerhard Muller , Werner Rausch , Klaus Wittel
CPC分类号： C23C22/13 , C23C22/12 , C23C22/368
摘要： Disclosed is a process for phosphating a galvanized surface, particularly of galvanized steel wherein the surface is contacted for up to 10 seconds with a phosphating solution which contains accelerator, particularly nitrate,0.5 to 5.0 g/l zinc,3 to 20 g/l phosphate (calculated as P.sub.2 O.sub.5),0.3 to 3 g/l magnesiumat a weight ratio of magnesium: zinc=(0.5 to 10):1 and has an S value in the range from 0.2 to 0.4 preferably in the range from 0.2 to 0.3, and is replenished with a concentrate in which the weight ratio of zinc to phosphate (calculated as P.sub.2 O.sub.5) is in the range from (0 to 1):8.It is particularly desirable to use a phosphating solution which contains up to 1.5 g/l zinc, preferably 0.5 to 1 g/l zinc, at a weight ratio of magnesium: zinc of (0.5 to 3:1, nickel ions in an amount of up to 1.5 g/l, preferably in an amount of up to 0.5 g/l and simple or complex fluoride in an amount of up to 3 g/l, preferable 0.1 to 1.5 g/l (calculated as F in each case).A special advantage is afforded by the use of the process to treat galvanized steel strip which is subsequently painted or coated with a preformed organic film.
摘要翻译： 公开了一种使镀锌表面，特别是镀锌钢板磷化的方法，其中表面与含有促进剂，特别是硝酸盐的磷酸盐溶液接触达10秒钟，0.5-5.0g / l锌，3-20g / l磷酸盐 （以P 2 O 5计），0.3〜3g / l镁，镁：锌=（0.5〜10）：1的重量比，S值在0.2〜0.4的范围内，优选为0.2〜0.3， 补充浓缩物，其中锌与磷酸盐的重量比（以P2O5计算）在（0至1）：8的范围内。 特别希望使用含有1.5g / l以下锌，优选为0.5〜1g / l的锌，磷酸盐溶液，其重量比为：镁（0.5〜3:1），镍离子 最多为1.5g / l，优选为至多0.5g / l的量，并且最多为3g / l的简单或复合氟化物，优选为0.1至1.5g / l（以每种情况计算为F）。 通过使用该方法来处理随后涂覆或涂覆预成型有机膜的镀锌钢带提供了特别的优点。
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4.发明授权
公开(公告)号：US6153015A
公开(公告)日：2000-11-28
申请号：US202016
申请日：1998-12-08
申请人： Joachim Geldner , Klaus Wittel , Georg Bluemlhuber
发明人： Joachim Geldner , Klaus Wittel , Georg Bluemlhuber
摘要： The process for removing a soap-contaminated conversion layer remaining on a metal workpiece after cold-forming with an aqueous acidic cleaning composition containing water, a surfactant such as an alkyl amine ethoxylate and nitric acid, phosphoric acid and/or amidosulphonic acid includes immersing the contaminated metal workpiece in the aqueous acidic cleaning composition at a temperature above 60.degree. C. until it has a clean bright surface and a fatty acid formed by reaction of the soap in the conversion layer is dispersed in the cleaning composition and then subsequently separating the metal workpiece from the cleaning solution and, after the separating, cooling the recovered aqueous acidic cleaning composition to a temperature below 55.degree. C. until a fatty acid layer including the fatty acid is separated from the aqueous acidic cleaning composition. The fatty acid layer is removed from the aqueous acidic cleaning composition to form a reusable aqueous acidic cleaning composition and then other metal workpieces are cleaned with the reusable aqueous acidic cleaning composition.
摘要翻译： PCT No.PCT / EP97 / 01966。 371日期1998年12月8日第 102（e）日期1998年12月8日PCT 1997年4月18日PCT PCT。 第WO97 / 43462号公报 日期：1997年11月20日使用含有水的表面活性剂，烷基胺乙氧基化物和硝酸的表面活性剂，磷酸和/或其盐进行冷成型后，残留在金属工件上的皂污染的转化层的除去方法 酰胺磺酸包括将污染的金属工件浸渍在高于60℃的水性酸性清洁组合物中，直到其具有干净的明亮表面，并且通过转化层中的皂的反应形成的脂肪酸分散在清洁组合物中， 然后随后将金属工件与清洁溶液分离，并且在分离之后，将回收的水性酸性清洁组合物冷却至低于55℃的温度，直到包含脂肪酸的脂肪酸层与酸性清洁组合物水分离。 将脂肪酸层从含水酸性清洁组合物中除去以形成可重复使用的酸性水性清洁组合物，然后用可重复使用的酸性清洗组合物清洗其它金属工件。
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