Abstract: The present invention is directed toward a method for stabilizing the electrolytic deposition of platinum from an electrolytic bath. In particular, the present invention relates to a corresponding method in which the platinum electrolytic bath has platinum in the form of a sulfamate complex.

Abstract: The present invention relates to an electrolyte for deposition of hard silver layers, wherein the element bismuth is alloyed to the silver. The invention also relates to a method for deposition of a corresponding silver-bismuth alloy from an electrolyte according to the invention and to a correspondingly deposited layer.

Abstract: Aqueous electrolyte for deposition of a ruthenium alloy layer on metal surfaces, in particular base metal surfaces, its use and a corresponding electrolytic process, and a correspondingly produced layer sequence.

Abstract: The present invention relates to an electrolyte and to a method for the electrolytic deposition of silver coatings and silver alloy coatings. The electrolyte according to the invention is cyanide-free, storage-stable and ensures the deposition of high-gloss, brilliant and white silver and silver alloy layers for technical and decorative applications.

Abstract: The present invention relates to an electrolyte and to a method for the electrolytic deposition of silver coatings and silver alloy coatings. The electrolyte according to the invention is cyanide-free, storage-stable and ensures the deposition of high-gloss, brilliant and white silver and silver alloy layers for technical and decorative applications.

Abstract: The present invention relates to an electrolyte containing suitable reducing agents for adjusting the composition of silver-palladium layers. Furthermore, these reducing agents contribute to improving the layer appearance and to increasing the luminance (L value, CIE Lab) of the deposited layers. The present invention also discloses a method for the electrolytic deposition of silver-rich silver-palladium alloys. The alloys can be deposited on conductive surfaces over a wide current density range.

Abstract: The present invention relates to an electrolyte and to a method for the electrolytic deposition of silver-rich silver-palladium alloys which to a minor degree also include selenium and/or tellurium. The electrolyte of the invention allows uniform deposition of such an alloy on conductive surfaces across a wide range of current densities.

Abstract: The present invention relates to a cyanide-free electrolyte which contains a phosphate and aliphatic or aromatic thio compounds and also to a process for the electrolytic deposition of an alloy of the elements copper and tin and optionally zinc. The electrolyte and the process are characterized in that stannate ions and copper ions and optionally zinc(II) ions and also aliphatic and/or aromatic thio compounds are present in the electrolyte used. The electrolyte can optionally additionally contain carboxylic acids, wetting agents and/or brighteners. The present invention further provides a process for the electrolytic deposition of alloys of copper, tin and optionally zinc on consumer goods and decorative goods using the electrolyte of the invention.

Abstract: The present invention relates to an electrolyte and to a method for the electrolytic deposition of silver-rich silver-palladium alloys which to a minor degree also include selenium and/or tellurium. The electrolyte of the invention allows uniform deposition of such an alloy on conductive surfaces across a wide range of current densities.

Abstract: The present invention relates to an electrolyte for the electrochemical deposition of palladium or palladium alloys on metallic or conductive substrates. The invention likewise relates to a corresponding electroplating process using this electrolyte and specific palladium salts which can be advantageously used in this process.

Abstract: The present invention relates to an anode system for conventional electrolysis cells, a process for the production thereof and its use for the deposition of electrolytic coatings. The anode system is characterized in that the anode (2) is in direct contact with a membrane (3) which completely separates the anode space from the cathode space. This anode system is therefore a direct-contact membrane anode.

Abstract: The present invention relates to an electrolyte and a process for depositing bronze alloys on consumer goods and industrial articles. The electrolyte of the invention comprises, in addition to the metals to be deposited and additives such as wetting agents, complexing agents and brighteners, in particular sulfur compounds which have a positive effect in the corresponding process for the deposition of the bronzes.

Abstract: The present invention relates to a process for preparing palladium complexes. In particular, the present invention relates to a process in which ammoniacal complexes of palladium (hydrogen)carbonate are converted into complexes with oligoamine ligands.

Abstract: Consumer goods and industrial articles are electroplated with bronze layers for decorative purposes and for protection against corrosion. The electrolytes used hitherto for producing decorative bronze layers are cyanide-containing or, as in the case of baths based on organosulfonic acids, highly corrosive, or, as in the case of cyanide-free baths based on diphosphoric acid, give unsatisfactory brightness and shine. The present invention provides a nontoxic electrolyte for the electrochemical deposition of uniformly bright and shiny bronze layers and a corresponding process for the application of such decorative bronze layers to consumer goods and industrial articles, by means of which relatively thick bronze layers can also be deposited electrochemically in a satisfactory way.

Abstract: The present invention relates to an electrolyte for the electrochemical deposition of palladium or palladium alloys on metallic or conductive substrates. The invention likewise relates to a corresponding electroplating process using this electrolyte and specific palladium salts which can be advantageously used in this process.

Abstract: The invention relates to a modified copper-tin electrolyte which is free of toxic constituents such as cyanides or thio compounds. The invention further relates to a process for the deposition of decorative bronze layers on consumer goods and industrial articles using the electrolyte of the invention. The electrolyte comprises an additive formed from epichlorohydrin and hexamethylenetetramine and contains carbonate or hydrogencarbonate ions.

Abstract: The present invention relates to a process for preparing palladium complexes. In particular, the present invention relates to a process in which ammoniacal complexes of palladium (hydrogen)carbonate are converted into complexes with oligoamine ligands.

Abstract: The invention concerns a bath for the electrochemical deposition of high-gloss white rhodium coatings and a whitening agent for the same. The brightness or degree of whiteness of the deposited coatings is significantly increased by means of compounds having the formula R—SOm—H, wherein m is the numbers 3 or 4 and R is a straight-chain or branched chain or cyclic alkyl group having up to 20 C atoms, as a whitening agent. The thickness of the coating that can be deposited without a bloom is also significantly increased.

Abstract: The invention provides an acid bath for the electrodeposition of glossy gold and gold alloy layers and a gloss additive for same. By using compounds of the formula I R—SOm—H  (I) in which m is the number 3 or 4 and R represents a straight-chain or branched or cyclic alkyl group with up to 20 carbon atoms and, in the event that m=4, also an aryl or heteroaryl group with up to 10 carbon atoms, which may be optionally substituted once or several times with straight-chain or branched alkyl groups with 1 to 14 carbon atoms, as a further gloss additive, the current density/working range is extended with a small negative effect when the pH is changed and the current efficiency and deposition performance is increased.

Abstract: The invention concerns a bath for the electrochemical deposition of high-gloss white rhodium coatings and a whitening agent for the same.