Abstract:
A rotating drive for an adjusting spindle of a disk brake for motor vehicles, in particular street vehicles, has a cam lever (4), which can be rotated around an axis (19) parallel to the brake disk, comprising one cantilever (23) on each side of said lever comprising angular offset radial boreholes (24, 24') which receive radial pins (17, 17'). The pins (17, 17') reach into the double forked end of a drive lever (15), which can be rotated around an axis (20), crossing at right angles at a distance from the axis (19). The rotational movements of the drive lever (15) are transferred to a reset drive, which belongs to an adjusting spindle extending at right angles to the plane of the brake disk.
Abstract:
In the aerobic culture of microorganisms of the Xanthomonas genus in fermentation media, the use of water-in-oil emulsions in the media minimizes viscosity problems and enhances yields of Xanthomonas biopolymers. Preferably, the emulsion is formed with a surfactant and the microorganism is Xanthomonas campestris.
Abstract:
A formed epoxy resin composition comprising a condensed epoxy resin and pentabromodiphenylether; the use of pentabromodiphenylether alone or with other brominated diphenyl ethers as a flame-retardant agent for compositions containing epoxide resins especially fibrous substrates of glass and/or cellulose fibers containing epoxide resins therein.
Abstract:
Process and agent for fatting or lubrication of leather and furs based on the salts of sulfonated chlorinated products of higher fatty acids or of esters of higher fatty acids, said fatty acids having from 8 to 24 carbon atoms, especially natural fats and oils or tallow fatty acid methyl ester, having a chlorine content of 20% to 45% by weight and essentially free of olefinic double bonds and having an SO.sub.3 content of from 40 to 150 mol percent based on the chlorinated product, which agent and the leather and furs so treated are extraordinarily resistant to the effect of light, to oxidation and to acids.
Abstract:
This invention is directed to the preparation of .alpha.-sulfofatty acid esters. More particularly, this invention is directed to a process for the simplified preparation of light-colored, wash-active esters of .alpha.-sulfofatty acids with monovalent C.sub.1 to C.sub.8 alcohols or their salts from fats and oils of vegetable and/or animal origin comprising re-esterification with the monovalent alcohols or saponification and esterification with the monovalent alcohols, separation of the fatty acid ester formed, hydrogenation of the fatty acid ester, sulfonation, and bleaching, wherein a fatty acid ester fraction from which accompanying fatty acid glycerides have been removed to the extent of about 1 percent by weight or less, based upon the weight of the material to be sulfonated, is introduced into the sulfonation stage.
Abstract:
Corrodible iron-containing metals (including steel) possess decreased tendency to corrode when contacted with aqueous media (including dilute strong mineral acids) when they carry a surface coating of mixtures of aminoalkanols of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent a C.sub.1-21 alkyl; and wherein the sum of the carbon atoms in R.sub.1 and R.sub.2 is 6 to 22. The vicinal ##STR2## substituents are non-terminal and are preferably uniformly distributed along the chain. The aminoalkanols are useful both in free base and in salt form.
Abstract:
As an improved flame-resistant agent, pentabromodiphenyl ether and mixtures of pentabromodiphenyl ether and brominated diphenyl ethers; an agent for impregnating a mass of particles which comprises an impregnating agent, pentabromodiphenyl ether, preferably together with a plasticizer; a laminate substrate comprising a web of fibers impregnated with an impregnating agent and pentabromodiphenyl ether, said web preferably containing a plasticizer; a method of increasing the flame resistance of a continuous web impregnated with an impregnating agent which comprises including in said web pentabromodiphenyl ether.
Abstract:
The invention relates to an improvement of the known continuous process for the separation of mixtures of fatty alcohols of different melting points, in which the starting mixture by treating with an aqueous wetting agent solution is converted to a dispersion of liquid fatty substances and solid fatty substance particles, the formed dispersion is separated into two phases of different specific gravities, the lighter phase consists substantially of the liquid fatty fraction and the heavier phase of a dispersion of the solid fatty particles in the aqueous wetting agent solution. After separation of this suspension the wetting agent solution is returned to the process. The improvement consists in withdrawing a part of the recycling wetting agent solution from said dispersion of fatty particles in the aqueous wetting agent solution by separation of some or all the aqueous solution from the solid fatty particles, the solid fatty particles with the remaining aqueous phase and adhering wetting agent are melted in the presence of an aqueous phase and the molten fatty fraction containing little wetting agent, is separated from the aqueous phase enriched with wetting agent which is recycled and the amount of wetting agent solution withdrawn is replaced with fresh wetting agent solution.
Abstract:
A circuit arrangement for large power transformers with a low-voltage winding, a main high-voltage winding and a step winding as well as a step switching device at a Y-point side thereof, includes, at a location between a point connecting the step winding to the high-voltage main winding and the Y-point of the transformer, a capacitor in series with a resistor is connected electrically parallel to respectively current-carrying steps of the step winding, the capacitor and the resistor being of such dimensions as to decrease resonance amplitudes of the connecting point to ground, the capacitor being constructed of spirally wound strip lines formed of a resistance alloy, the strip lines being also of such dimensions as to reduce resonance amplitudes of the connecting points.
Abstract:
A process for the extraction of heavy metal ions capable of forming complexes with amines from dilute aqueous heavy metal salt solutions consisting essentially of the steps ofA. dissolving from 2% to 15% by weight, based on the weight of the dilute aqueous heavy metal salt solution, of at least one vicinal aminoalkanol of the formula ##STR1## wherein R.sub.1 and R.sub.2 are unbranched alkyl having from 1 to 17 carbon atoms and the sum of the carbon atoms in R.sub.1 + R.sub.2 is from 7 to 18, A is a member selected from the group consisting of alkylene having from 2 to 6 carbon atoms and methylalkylene having from 3 to 7 carbon atoms, and y is an integer from 1 to 2, with the proviso that the vicinal substituents are distributed statistically, in a dilute aqueous heavy metal salt solution in the absence of organic solvents, at a temperature below the turbidity temperature of said vicinal aminoalkanols;B. heating the solution to a temperature of at least 10.degree. C above said turbidity temperature whereby two liquid phases are formed, andC. separating the organic phase containing the heavy metal ion.