Abstract: A process of depositing a coating (5) onto a substrate (3) by reactive sputtering in a closed chamber (1) in the presence of a plasma of a non-reactive gas, and a reactive gas containing the element or elements said coating has to be made of, according to which process use is made of a target (2) having a surface layer (4) directed towards the substrate and containing at least one of the elements to be sputter deposited onto this substrate, according to which process the thickness of said surface layer (4) during the cathode sputtering is controlled by adjusting the concentration of the gases in said closed chamber (1). The single figure.

Abstract: The invention concerns a method for making a composite metal product by adding at least one substance to said product, which consists in using a metal product in the form of a continuous strip (1) moved in a vacuum chamber (2), applying the substance on said strip and diffusing said substance at least partially into the strip when it is passing in the vacuum chamber maintaining it at a temperature lower than its melting point, but sufficiently high for enabling said diffusion.

Abstract: The invention relates to compositions for flame-retardant cast panels made of (meth)acrylic polymers.The composition comprises at least one (meth)acrylic ester monomer, (meth)acrylic acid and at least one phosphorus compound which is anhydrous and is chosen from phosphoric acids, phosphoric acid esters or their mixtures, optionally in combination with an optionally halogenated neutral phosphoric ester. The amount of (meth)acrylic acid and of phosphorus compound, by weight with respect to the total mixture constituting the composition, is such that the flame-retardancy coefficient FRC: ##EQU1## is greater than 0.95.

Abstract: There is described a device for electrolytically depositing, in a continuous operation and under a high current density, a lining metal layer over at least the one surface of a metal strip moving through an electrolytic bath, comprising at least one conducting roller cooperating with a cathode current supply, extending cross-wise relative to the strip movement direction and rotating about the axis thereof, in contact with the strip, substantially at the same circumferential speed as the traversing speed thereof, at least one anode being provided in the electrolytic bath facing at least the one surface of the strip moving through said bath, device in which said conducting roller is at least partly hollow, and the cathode current supply comprises a series of parallel-connected contacts which are distributed over that inner cylinder-like surface of the roller which lies opposite that outer surface portion the strip is applied on.