Abstract: The present invention concerns a metal or metal alloy deposition composition, particularly a copper or copper alloy deposition composition, for electrolytic deposition of a metal or metal alloy layer, particularly for electrolytic deposition of a copper or copper alloy layer, comprising at least one type of metal ions to be deposited, preferably copper ions, and at least one imidazole based plating compound. The present invention further concerns a method for preparation of the plating compound, the plating compound itself and its use in a metal or metal alloy deposition composition. The inventive metal or metal alloy deposition composition can be preferably used for filling recessed structures, in particular those having higher diameter to depth aspect ratios.

Abstract: The invention relates to an aqueous plating bath composition and a method for depositing a palladium layer by electroless plating onto a substrate. The aqueous plating bath composition according to the invention comprises a source for palladium ions, a reducing agent for palladium ions and an unsaturated compound. The aqueous plating bath composition according to the invention has an improved stability against undesired decomposition due to the unsaturated compounds while keeping the deposition rate for palladium at the desired satisfying value. The aqueous plating bath composition has also a prolonged life time. The unsaturated compounds of the invention allow for adjusting the deposition rate to a satisfying range over the bath life time and for electrolessly depositing palladium layers at lower temperatures.

Abstract: A specially designed sealing element (17) for a circular connector in which the sealing surface is subdivided into two areas, a first sealing section being designed to have a mainly radial sealing effect and a second sealing section being designed to have a mainly axial sealing effect. As a result, an effective sealing is achieved even in the case of counterparts having higher tolerances.

Abstract: In a round plug connector, the screen ends at the plug-side end of the grip body, is provided. An axially moveable contact-making element is arranged on a screw element, it being possible for the contact-making element to assume two positions. The first position is “screen applied”. The second position is “screen not applied”.

Abstract: In a round plug connector, the screen ends at the plug-side end of the grip body, is provided. An axially moveable contact-making element is arranged on a screw element, it being possible for the contact-making element to assume two positions. The first position is “screen applied”. The second position is “screen not applied”.

Abstract: A specially designed sealing element (17) for a circular connector in which the sealing surface is subdivided into two areas, a first sealing section being designed to have a mainly radial sealing effect and a second sealing section being designed to have a mainly axial sealing effect. As a result, an effective sealing is achieved even in the case of counterparts having higher tolerances.

Abstract: The invention relates to electroplating additives for the deposition of a group IB metal/binary or ternary group IB-group IIIA/ternary, quaternary or pentanary group IB-group IIIA-group VIA alloy on substrates useful for thin film solar cells. The additives have the general formula (A): wherein X1 and X2 may be the same or different and are selected from the group consisting of arylene and heteroarylene; FG1 and FG2 may be the same or different or are selected from the group consisting of —S(O)2OH, —S(O)OH, —COOH, —P(O)2OH and primary, secondary and tertiary amino groups and salts and esters thereof; R is selected from the group consisting of alkylene, arylene or heteroarylene and n and m are integers from 1 to 5.

Abstract: An electrical connector connects to a mating connector by a rotatable union nut that is axially displaceable on a contact carrier with a sealing element therebetween. Damage to the sealing element is prevented by a stop that limits the maximum path by which the union nut can be screwed onto the mating connector, such that when the union nut is screwed on, the elastic sealing element is intentionally compressed, but is not damaged or destroyed. A vibration guard can also be provided in the connection.