Abstract: A continuous process for dyeing yarns with vattable dyes comprises, in continuous yarn dyeing ranges, metering an aqueous dye dispersion into the circulating chemical liquor.

Abstract: A rail-cleaning locomotive for electrical toy and model trains with a cleaning unit including polishing disks rotated by an electric motor and lying on the rails, wherein the cleaning unit is disposed in a fore-part, coupled to the locomotive so that it can pivot about a vertical and slightly also about a horizontal axis, and is provided with a cleaning motor, which is separated from the driving motor of the locomotive, and wherein the polishing disks are constructed as cleaning wheels with guiding wheel flanges.

Abstract: A remote-controlled uncoupling for an electric toy or model train with an electrically operated disengaging mechanism, particularly a hook coupling with coupling hooks, which can be pivoted about a horizontal axis and hooked into a coupling bracket of the respective counter-coupling part, wherein a response circuit, which emits a triggering signal for the disengaging mechanism whenever the train voltage is within a voltage gate, that is, between two threshold values for a specified time interval, is assigned to the electrically operated disengaging organ.

Abstract: A closing apparatus for a convertible roof of a convertible vehicle comprises two locking organs (9, 10), which in the closing position of the folding roof (1) each engage an anchoring bracket (11, 12) at the windshield frame (3) and by means of at least one operating handle (15) lock in the closing position and disengage from the anchoring brackets (11, 12) when opening. For this purpose, the locking organs (9, 10) are connected over a connecting element (14), which imparts a synchronous swivelling motion and to which an operating handle (15), which is constructed as a one-hand swivelling handle, is centrally assigned.

Abstract: The invention is directed to a method for controlling the fuel quantity for an internal combustion engine having a catalytic converter and includes the steps of: determining the air mass flow inducted by the engine; determining a precontrol variable for the quantity of fuel in dependence on current values of operating variables of the engine; presetting a desired lambda value for the air/fuel mixture to be supplied to the engine; checking the actual lambda value of the exhaust gas forward of the catalytic converter; comparing the desired lambda value to the actual lambda value to form a comparison; controlling the fuel quantity in dependence upon the comparison; determining the oxygen actual charge level of the catalytic converter; comparing the determined actual charge level to a desired charge level; and, then, when the actual charge level is greater than the desired charge level, lowering the desired lambda value to below the value one; otherwise, when the actual charge level is less than the desired charg

Abstract: A folding top for a passenger car with a folding roof (convertible) includes flexible roofing which is accommodated between opposite pairs of rod linkage legs of a folding rod linkage. With the swivelling motion of the folding rod linkage in a plane parallel to the longitudinal center plane of the vehicle, the folding top can be brought from a closed position held in a windshield region into an essentially superimposed folded position of the rod linkage legs in the rear region of the vehicle. In order to achieve improved handling and a secured covering of the folding top, the region of the top formed in the closed position between the front rod linkage legs is constructted as a shell for the top, which in itself is stiff and dimensionally stable, and is connected flush with the flexible roofing and can be fixed in the folded position in the rear region over the folded top in a covering position.

Abstract: A method of controlling the operation of an internal combustion engine (1) provided with a memory (3, 4) storing values of a particular operating parameter (.alpha..sub.z) for use at various operating conditions (n, P.sub.s) comprises operating the engine using those stored values, detecting knocking using a knock detector adjusting the operating parameter in response to signals from the knock detector (11), calculating the length of time t.sub.s for which each set of operating conditions is maintained, and altering the stored parameter values by an amount which depends on the calculated length of time (t.sub.s).

Abstract: Caprolactone is prepared by a process in which a 6-hydroxycaproic ester in vapor form is passed, together with an inert carrier gas, at from 150.degree. to 450.degree. C., over a fixed-bed or fluidized-bed oxidic catalyst.

Abstract: The aqueous alkaline bath for electrochemical deposition of a zinc-iron alloy according to our invention contains a zincate and a compound of iron with a sugar. Advantageously sugar including monosaccharides, trisaccharides and disaccharides such as sucrose are used to form this iron compound. The iron compound may be an iron saccharate. An alloy with superior corrosion resistance is the product of an electrochemical deposition using this bath.

Abstract: 4-Pentenoates are prepared by isomerization by a process in which isomeric pentenoates are treated with a zeolite of the pentasil type at from 50.degree. to 300.degree. C., and the 4-pentenoate is distilled off from the reaction mixture.

Abstract: Olefinically unsaturated compounds are hydroformylated continuously, the olefin being passed into the lower region of the reactor, under from 1 to 40 bar and at from 50.degree. to 140.degree. C. with the aid of a rhodium complex as a catalyst in a hydroformylation reactor having a liquid reaction zone which occupies about 60-85% of the reactor volume, the gaseous products and reactants being removed from the hydroformylation reactor, the products being isolated and the major part of the remaining gas being recycled to the reactor by the cycle gas method, by a process in which from 20 to 80% by volume of the cycle gas is fed into the hydroformylation reactor above the liquid reaction zone and/or below the liquid surface in the top fourth of the liquid reaction zone.

Abstract: In an improved process for the preparation of 6-aminocaproates by reacting a 5-formylvalerate with ammonia and hydrogen using an alkanol as a solvent in the presence of a hydrogenation catalyst at elevated temperatures and under superatmospheric pressure, the improvement comprises carrying out the reaction at from 40.degree. to 95.degree. C.

Abstract: Polyalkylene terephthalates which contain small quantities of aliphatic polycarbonate show improved fracture behavior, without a significant adverse effect on the strength and the flowability in the melt. Moreover, the compositions show improved behavior in hot-air ageing.

Abstract: Caprolactam is prepared by a process in which(a) a 5-formylvalerate is reacted with excess ammonia and hydrogen in the presence of an alkanol as a solvent and in the presence of a hydrogenation catalyst under superatmospheric pressure in the liquid phase at from 40.degree. to 130.degree. C.,(b) excess ammonia and hydrogen are separated off from the reaction mixture and(c) the reaction mixture thus obtained is heated to 150.degree.-250.degree. C. and .epsilon.-caprolactam is obtained.

Abstract: The chamber (1) of the metering apparatus is defined by the inside wall surface of a cylinder (3), by a displaceable piston (4), and by a cylinder end portion (5) which is displaceable relative to the cylinder (3). Ducts (2a, 2b) are arranged in the cylinder end portion (5) in such a way that they can be selectively communicated with the chamber (1) or closed off by the end face (7) of the cylinder (3) In that way a part of the chamber wall acts directly as a shut-off member so that no residual volumes remain, which cannot be ejected by the piston (4).

Abstract: Unfilled, unreinforced polyamide moulding compounds are disclosed which have high rigidity and notched impact strength and are highly fluid in the molten state, containing aliphatic polycarbonate polyurethanes which are substantially unbranched in the carbon chain, prepared from polyhexamethylene carbonate diols and/or mixtures thereof with oligo- or polyalkylene glycols having 4-100 carbon atoms and 1,6-diisocyanatohexane.

Abstract: A process for the preparation of succinic acid diesters by carbonylation of acrylic acid esters in the presence of alcohols, using a cobalt carbonyl complex as the catalyst and a heterocyclic nitrogen base as the promoter, at 80.degree.-200.degree. C. and under a carbon monoxide pressure of 60-300 bar, wherein the reaction is carried out in the presence of not less than 20% by weight, based on the amount of all the liquid constituents of the reaction mixture, of an inert liquid and the concentration of the acrylic acid ester is kept, for the predominant part of the reaction time, at below 15% by weight, again based on the amount of all liquid constituents.

Abstract: Vinylsulfonyl dyes, if padded from acidic liquors, produce on wool merely dyeings having a poor yield and only moderate fastness properties if the pad-beam method is used. It has been found according to the invention that padding from weakly alkaline liquor (pH 7-9) with sodium bicarbonate as fixing alkali and subsequent batching (6-24 hours) of the material produces good coloristic results especially on wools with a low-felting or non-felting finish.

Abstract: An electrostatographic suspension developer contains a dispersed pigment and a copolymer ofA. cationic monomers which contain ammonium, phosphonium or sulfonium groups and of which the anions are derived from CH-acidic or sulfur- or phosphorus-containing acidic compounds containing at least one C.sub.6 -C.sub.24 hydrocarbon radical andB. radically polymerizable, olefinically unsaturated compounds as comonomersin an electrically insulating carrier liquid having a volume resistivity of at least 10.sup.9 ohm. cm and a dielectric constant below 3.

Abstract: An electrostatographic suspension developer contains, in an electrically insulating carrier liquid with a volume resistivity of at least 10.sup.9 Ohm. cm and a dielectric constant of below 3, a dispersed pigment and a polymer of basic secondary or tertiary amino group-containing monomers, the amino groups of which are completely or partially neutralized with a Bronsted acid, which contains at least one hydrocarbon radical having from 6 to 24 carbon atoms, and optionally further comonomers.