Abstract:
The novel polyamide fibers comprising stainable particles contain 80 to 99.95% by weight polyamide, 0.05 to 20% by weight stainable particles, and 0 to 19.95% by weight additives, wherein the sum of the weight percentages is 100%.
Abstract:
A layered structure comprising in this order: (A) a silicon carbide layer, (B) at least one stratum (b1) located at least one major surface of the silicon carbide layer (A), (b2) chemically bonded to the bulk of the silicon carbide layer (A) by silicon-oxygen and/or silicon-carbon bonds, (b3) covering the at least one major surface of the silicon carbide layer (A) partially or completely, and (b4) having a higher polarity than a pure silicon carbide surface as exemplified by a contact angle with water which is lower than the contact angle of water with a pure silicon carbide surface; and (C) at least one dielectric layer, which covers the stratum or the strata (B) partially or completely and is selected from inorganic and inorganic-organic hybrid dielectric layers; a process for its manufacture and its use.
Abstract:
The invention relates to a method for producing, in essence, isometric nanoparticulate lanthanoide/boron compounds or solid substance mixtures containing, in essence, isometric nanoparticulate lanthanoide/boron compounds.
Abstract:
The invention relates to a method for producing polymer-coated metal foils, comprising the following steps: (a) a base layer (7) is applied to a carrier foil (3) by means of a dispersion (5) containing particles that can be electroless-plated or electroplated in a matrix material; (b) the matrix material is at least partially dried and/or at least partially hardened; (c) a metal layer (19) is formed on the base layer (7) by subjecting the base layer (7) containing the particles that can be electroless-plated or electroplated to an electroless plating or electroplating process; (d) a polymer (23) is applied to the metal layer (19). The invention further relates to a use of the polymer-coated metal foil produced according to the invention for manufacturing printed circuit boards.
Abstract:
The invention relates to a dispersion for applying a metal layer to an electrically non-conductive substrate containing an organic binder component, a metal component with different metals and/or metal particle shapes, and a solvent component. The invention further relates to methods for producing said dispersion, methods for creating an optionally structured metal layer with the aid of the dispersion, the obtained substrate surfaces, and the use thereof.
Abstract:
The invention relates to a device for electroplating at least one electrically conductive substrate (8), or an electrically conductive structure situated on a non-conductive substrate (8). Said device comprises at least one bath, an anode and a cathode (2). The bath contains an electrolyte solution, which comprises at least one metal salt and from which metal ions are deposited on electrically conductive surfaces of the substrate, as the cathode is brought into contact with the surface of the substrate to be coated and said substrate is conveyed through the bath. The cathode comprises at least one strip (2) with at least one electrically conductive segment (12) and is guided around at least two rotating shafts (3). The invention also relates to a method for electroplating at least one substrate that is carried out in a device according to the invention. According to said method, to produce the coating, the strip lies on the substrate and circulates at a speed corresponding to the speed at which the substrate is conveyed through the bath. The invention further relates to the use of said device for electroplating electrically conductive structures situated on an electrically non-conductive support.
Abstract:
Disclosed is a method for producing double metal cyanide complex catalysts of general formula M2a[M1(CN)rXt]b, wherein M2 preferably represents Co(III) or Fe(III) and M1 preferably represents Zn(II), X represents a group that is different from cyanide, forms a coordinate link to M1, and is selected among the group comprising carbonyl, cyanate, isocyanate, nitrile, thiocyanate, and nitrosyl, a, b, r, t represent integers which are selected such that the electroneutrality condition is met. Said double metal cyanide complex catalysts are produced by reacting a) a cyanometallate hydrogen acid of general formula Hw[M1(CN)r(X)t], wherein M1 and X are defined as indicated above, r and t are defined as indicated above, and w is selected such that the electroneutrality condition is met, with b) an easily protolyzable metal compound M2RW and/or M2RuYv, wherein M2 is defined as indicated above, R independently represents the anion of a very weak protonic acid having a pKs value of > 20, Y represents the anion of an inorganic mineral acid or a moderately strong to strong organic acid having a pKs value ranging from -10 to +10, w corresponds to the valence of M2, and u + v corresponds to the valence of M2, u and v amounting at least to 1, respectively. The reaction is carried out in a nonaqueous, aprotonic solvent.