PL3933B3 - A method of producing shiny metal coatings on metals. - Google Patents

Description

The longest duration of the patent until September 30, 1940, Patent No. 3082 protects the method of producing shiny metal coatings on metals, e.g. in the form of zinc on iron, by means of a galvanic method consisting in electrolytic bathing, in addition to colloids or bodies that can produce them , additional bodies are added to stop the release of hydrogen at the cathode under the conditions described. Further studies have shown that completely different results are achieved if, instead of separate use, on one side of the colloids and on the other side of the hydrogen-binding bodies are added to electrolytic bath of bodies having both the colloidal nature and hydrogen-binding properties. Similar colloids can be obtained in a variety of ways. If it dissolves, for example, gelatine in hot water in such an amount as to obtain a hard jelly after cooling, and a layer of hydrogen peroxide (perhydrol) is covered with this mass, then the jelly slowly turns into a liquid, lable for sipping mass, forming a solution that does not give up oxygen even with prolonged standing. The action of the perhydrol can be enhanced with a catalyst, e.g. some salt such as aluminum sulphate. By adding to the electroplating bath similar colloids that bind hydrogen, which chemically bind the hydrogen peroxide or hold it in a permanent connection, one can achieve technical results unknown to date. . By electrolytic galvanizing of iron, a white, shiny, silver-like coating is obtained, with a particularly dense and high gloss; when polished, the metal acquires an astonishing shine. Other organic or inorganic colloids, such as, for example, rubber, protein, starch, dextrin, albumin and similar compounds can be similarly converted into hydrogen-binding products. Instead of hydrogen peroxide, it can be to use also other oxygen-containing bodies, especially those which are related to hydrogen peroxide by their origin, such as persulfates, perphates, percarbonates, persilicates, perphosphates, pyrophosphates, persulfuric acid, monosulfuric acid or similar compounds. These compounds are put into action on the colloids under such conditions as to give off hydrogen peroxide. For example, it is possible, for example, to release hydrogen peroxide by the action of sulfuric acid or the like from solutions of perborates, persulphates, or the like and bind it to a colloid. In order to carry out the process, the procedure is e.g. In liters, for example 10 kg of zinc sulfate, 2.5 kg of ammonium sulphate and 120 cm 3 of sulfuric acid (1.8), a small amount of preparation prepared, for example, from gelatine and hydrogen peroxide, is added and the galvanization is carried out in the usual manner. PL

Claims (3)

Patent claims. 1. A method of producing shiny metal coatings on metals, for example zinc coatings on iron, by electrolytic method according to Patent No. 3082, characterized by adding colloids or hydrogen-binding colloidal bodies to the electrolyte bath. 2. The method according to claim A method according to claim 1, characterized by the fact that hydrogen binding products obtained by interactions of colloids, or by products forming such and oxidizing agents or bodies forming oxidizing agents, especially hydrogen peroxide, or bodies containing such in the presence or absence of hydrogen peroxide, are added to the electrolytic bath. catalysts. 3. The method according to p. 1 and 2, the significant point in which the preparations made by the action of hydrogen peroxide or the gelatine-producing bodies are added, for example by pouring hydrogen peroxide on the gelatins in the presence or absence of catalysts. A1 e x a n d e r C 1 a s s e n. Deputy: M, Kryzan, patent attorney. Órufc L. gógtistawskiegó, WarszaWd. PL