Abstract: A thermosetting transparent coating material, its preparation and use. The coating includes (meth)acrylate (co)polymer having a number-average molecular weight of from 1,000 to 6,000 daltons, a glass transition temperature of ?15 to +70° C., and a hydroxyl number of from 80 to 200 mg KOH/g; polyester having a number-average molecular weight of from 800 to 6,000 daltons, a hydroxyl number of from 80 to 200 mg KOH/g and an acid number of from 1 to 50 mg KOH/g, comprising, based on the polyester, from 30 to 70% by weight of cycloaliphatic structural units; a blocked polyisocyanate in which the blocked polyisocyanate groups are attached to flexibilizing structural units which, as part of a three-dimensional network, lower its glass transition temperature; and blocked polyisocyanate in which the blocked polyisocyanate groups are attached to hardening structural units which, as part of a three-dimensional network, raise its glass transition temperature.

Abstract: Disclosed are coating compositions comprising film-forming material with at least one reactive functional group G??, catalyst for the crosslinking of the silane groups, aprotic solvents, and at least one adduct with silane functionality which is prepared by an addition reaction of (a) at least one silane (S1) which has at least one functional group G? which is reactive with the complementary functional groups G? of the compound (O), and (b) at least one compound (O) which has at least one complementary functional group G? and at least one surface-active radical. Also disclosed are multicoat paint systems in which the transparent coating has been produced from these coating compositions, methods of making and use, as well as methods of improving the hardness and/or the scratch resistance of coatings.

Abstract: Disclosed are coating compositions comprising at least one hydroxyl-containing compound (A) and at least one isocyanato-containing compound (B), wherein one or more of the constituents of the coating composition comprise between 2.5 and 97.5 mol %, based on the entirety of structural units (I) and (II), of at least one structural unit of the formula (I) —N(X—SiR?x(OR?)3-x)n(X?—SiR?y(OR?)3-y)m ??(I) and between 2.5 and 97.5 mol %, based on the entirety of structural units (I) and (II), of at least one structural unit of the formula (II) —Z—(X—SiR?x(OR?)3-x) ??(II).

Abstract: Disclosed are coating compositions comprising (a) at least one hydroxyl-containing compound (A), (b) at least one compound (B) having free and/or blocked isocyanate groups, and (c) at least one catalyst (D) for the crosslinking of silane groups, where (i) one or more constituents of the coating composition contain hydrolyzable silane groups and (iii) the coating composition can be finally cured to a coating which has statistically distributed regions of an Si—O—Si network. The finally cured coating obtained from the coating composition has a post-crosslinking index (PCI) of less than 2, wherein (PCI) is defined as the ratio of the storage modulus E?(200) at 200° C. to the minimum of the storage modulus E?(min) at a temperature above the measured glass transition temperature Tg.

Abstract: A thermosetting coating material comprising (A) at least 50% by weight, based on the amount of nonvolatile substances in the coating material of (A1) from 0% to 50% by weight, based on the entirety of components (A1) and (A2), of a polymethacrylate copolymer containing more than 50% by weight, based on the entirety of comonomers in the copolymer (A1), of free-radically polymerizable, ethylenically unsaturated compounds (a1) containing at least one reactive group of the formula I —X—SiR?x(OR?)3-x ??(I) and (A2) from 50% to 100% by weight, based on the entirety of components (A1) and (A2), of an adduct of polyisocyanate and alkoxysilane, (A2) containing at least one reactive group of the formula II: —NR—C(O)—N—(X—SiR?x(OR?)3-x)n(X?—SiR?y(OR?)3-y)m ??(II) (B) a catalyst for the crosslinking of the —Si(OR?)3-x units, and (C) an aprotic solvent or a mixture of aprotic solvents.

Abstract: A thermosetting transparent coating material, its preparation and use. The coating includes (meth)acrylate (co)polymer having a number-average molecular weight of from 1,000 to 6,000 daltons, a glass transition temperature of ?15 to +70° C., and a hydroxyl number of from 80 to 200 mg KOH/g; polyester having a number-average molecular weight of from 800 to 6,000 daltons, a hydroxyl number of from 80 to 200 mg KOH/g and an acid number of from 1 to 50 mg KOH/g, comprising, based on the polyester, from 30 to 70% by weight of cycloaliphatic structural units; a blocked polyisocyanate in which the blocked polyisocyanate groups are attached to flexibilizing structural units which, as part of a three-dimensional network, lower its glass transition temperature; and blocked polyisocyanate in which the blocked polyisocyanate groups are attached to hardening structural units which, as part of a three-dimensional network, raise its glass transition temperature.

Abstract: A receiving device for component parts, such as electric assemblies, is connected directly to a circuit board. The weight of the electric assembly is carried by a supporting device on contacting the circuit board. A connector which is part of the electric assembly or one of its components is flexibly disposed with respect to a socket of the circuit board, so that the production tolerances can be compensated without problem and a plug-in connection can be achieved between the connector and the socket without the weight of the electric components placing a load on the plug-in connection.

Abstract: The present invention relates to a receiving device for the component parts (4) connected directly with the circuit board (26), in particular electric assemblies. The weight of the electric assembly is carried by a supporting device (30) on contacting the circuit board. The connector (10) which is part of the electric assembly or one of its components is flexibly disposed with respect to the socket (34) of the circuit board, so that the production tolerances can be compensated without problem and a plug-in connection can be achieved between the connector and the socket without the weight of the electric component placing a load on the plug-in connection.

Abstract: Crome tanning of pickled animal hides with a tanning agent comprising a reaction product of a basic chromium (III) sulfate and aliphatic C.sub.4 -C.sub.6 dicarboxylic acids or their salts is improved by preparing the reaction product in an aqueous solution from basic chromium (III) sulfate and 0.2 to 0.8 mol of the aliphatic dicarboxylic acids per mol chromium oxide of the basic chromium sulfate with subsequent adjustment of the theoretical basicity to 0 to 50% with alkali metal hydroxide or carbonate, the reaction product being added to a hide pickling liquor in the form of an aqueous solution having a chromium oxide content of at least 5% or in powder form in a quantity of 0.9 to 1.5% chromium oxide, based on hide weight, with a liquor volume less than 100%, based on hide weight, the final pH value being above 4.0 and the final temperature above 40.degree. C.

Abstract: Adsorbers are loaded with impurities removed from a compressed gas stream and are regenerated by a gas heated by the heat of compression of the gas stream. A heat reservoir or accumulator is employed instead of a conventional shell and tube type heat exchanger.

Abstract: A tool for setting blind rivet nuts has a housing having a head defining a head axis, a pulling rod extending along and rotatable about the head axis, projecting axially forwardly from the head, and threadable into a blind rivet nut, and a hydropneumatic actuator including a rear air chamber and a source of air under pressure for axially displacing the rod along the axis between an extended position projecting axially relatively far from the head and a withdrawn position axially therebehind. A pneumatic motor connected to the pulling rod for rotating same in one sense to screw it into a rivet nut and for rotating the rod in the opposite sense direction to screw it out of the nut.

Abstract: A riveter has a housing forming an air chamber and a liquid-filled hydraulic chamber adjacent thereto, a head on the housing having a tip and forming a liquid-filled working chamber communicating with the hydraulic chamber, and a working piston in the working chamber and carrying a chuck for grasping a mandrel of a blind rivet. The head and chuck form a passage having a front end opening at the tip and a rear end opening into a mandrel-catching compartment and the piston displaceable in the working chamber between a ready position in which a mandrel of a blind rivet can be fitted into the passage at the chuck with the rivet engaged backwardly against the tip and an actuated position spaced from the tip and wherein the chuck is retracted.

Abstract: An alloy is described which contains between about 33 and 35% nickel, about 1 and 4% molybdenum and the balance iron with incidental impurities. The alloy is characterized by having a completely secondarily recrystallized structure, improved stability preventing substantial transformation to martensite at temperatures as low as -320.degree. F, high resistance and high initial permeability.

Abstract: In the etching of glass wherein glass is contacted with an aqueous etching bath containing hydrofluoric acid, and the glass is thereafter removed from the bath and rinsed, the improvement which comprises dissolving in the etching bath an acid-resistant wetting agent. Preferably the wetting agent contains fluorine, e.g. a perfluoralkane sulfonic acid quaternary ammonium salt, a perfluoralkane carboxylic acid salt, an alkoxylation product of a perfluoralkane sulfonamide, or the like.

Abstract: A blind riveter has a pistol-shaped housing connected via hydraulic and pneumatic lines and a rivet-feed duct to an actuator and rivet-feed arrangement. The housing has a tip forming a mandrel-receiving aperture and formed of a plurality of inwardly biased but outwardly deflectable holding elements. A chuck is displaceable in this housing between a front position engageable around the mandrel extending back through the aperture from a blind rivet whose head rests against the tip and a back position spaced well back from this aperture. During displacement from the front to the back position the mandrel is pulled back to upset its rivet and is broken off and during displacement from the back to the front position, the chuck grips the mandrel of a blind rivet that was introduced from behind into the housing behind the aperture and pushes it through the aperture, deflecting the holding elements apart.

Abstract: In the electrodeposition of a chrome layer wherein the chrome is deposited from an electrolyte solution containing a hexavalent chromium compound in the presence of a fluorine-based surfactant, the improvement which comprises employing as the fluorine-based surfactant a quaternary ammonium perfluoralkane sulfonate of the formula[R.sub.F SO.sub.3 ].sup.- [NR.sup.1 R.sup.2 R.sup.3 R.sup.4 ].sup.+in which R.sup.1,R.sup.2, R.sup.3 and R.sup.4 each individually is alkyl, alkenyl, cycloalkyl or aralkyl of up to 18 carbon atoms, or two or three of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 together with the nitrogen atom to which they are attached form a heterocyclic ring, and R.sub.F is a perfluorinated alkyl radical with 6 to 12 carbon atoms.Additives such as Na.sub.2 CO.sub.3, NaHCO.sub.3, Na.sub.2 CrO.sub.4, K.sub.2 CrO.sub.4, Na.sub.2 Cr.sub.2 O.sub.7 and K.sub.2 Cr.sub.2 O.sub.7 or water may also be admixed with the quaternary ammonium perfluoralkane sulfonate.