Abstract: This invention is directed to the preparation of alkali cellulose. More particularly, this invention is directed to a process for the preparation of alkali cellulose having a low water content, wherein finely divided cellulose suspended in a typical inert organic solvent is presteeped and the cellulose suspension is contacted with an alkali metal hydroxide/alcohol mixture and at least one aqueous alkalization solution of different concentration.

Abstract: Novel indoles of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 8 carbon atoms and aralkyl of 7 to 12 carbon atoms, X is selected from the group consisting of hydrogen and alkyl of 1 to 18 carbon atoms, Y is selected from the group consisting of hydrogen and halogen, Z is selected from the group consisting of hydrogen, alkyl of 1 to 8 carbon atoms, hydroxy alkyl of 1 to 8 carbon atoms, aryloxyalkyl of 7 to 12 carbon atoms, arylalkyl of 7 to 12 carbon atoms optionally substituted with at least one member of the group consisting of halogen, alkoxy of 1 to 4 carbon atoms, alkyl of 1 to 4 carbon atoms, --OH, --CF.sub.3, --OCF.sub.3, --NO.sub.2 and NH.sub.

Abstract: Process for the manufacture of an abrasive material comprising at least two binder layers formed from at least one aqueous resol I prepared from a monohydric phenol and formaldehyde (molar ratio of phenol to formaldehyde 1:(1.1 to 2.

Abstract: A process for the separation of metals in which a mixture of metal derivatives is converted into anion complexes by means of a complexing anion such as, for example, a halide, thiocyanate, sulphate, nitrate, or the like said anion complexes are bound to a solid, non-soluble polymer, containing oxygen bonded to carbon which is converted into a polyoxonium compound by means of the complexing liquid medium used. The complexes are separated by selective absorption and/or elution over the polymer using suited H.sup.+ ion concentrations and/or complexing anion concentrations.

Abstract: A spray cleaner composition for use with a propellant that is gaseous at room temperature, for the spot treatment of textiles before washing, consisting essentially of, without propellant,(a) from 6% to 16% by weight of ethoxylated C.sub.6 -C.sub.10 -alcohols selected from the group consisting of alkanols and alkenols, having an average of from 4 to 8 ethylene glycol ether groups, wherein the content of saturated C.sub.8 -alkanol is at least 50% by weight,(b) from 6% to 10% by weight ethoxylated C.sub.12 -C.sub.18 -alcohols selected from the group consisting of alkanols and alkenols, having an average of from 2 to 4 ethylene glycol ether groups, wherein the content of C.sub.16 -C.sub.18 -alkanols is not more than 50% by weight,(c) from 6% to 10% by weight of ethoxylated of C.sub.16 -C.sub.

Abstract: A method for the production of a toothed belt pulley made of metal without machining which is provided at lateral sides with annular flanges which protrude above the height of the teeth comprising initially shaping one of the two flanges as an axially extending collar with an outside diameter equal to or less than the diameter of the pitch circle of the teeth and then radially flanging the said collar to the outside to form the second annular flange and the pulley formed thereby.STATE OF THE ARTToothed belt pulleys are known and are used, for example, for the camshaft drive in internal combustion engines but the known pulleys have a rather complicated construction. One known pulley consists of a solid massive hub or nave which is produced on a metal lathe to which are connected three sheet metal parts forming the outer circle track with flanges on either side as well as the area connecting the circle track with the nave.

Abstract: In the process of tanning for the production of leather comprising subjecting uncured hides to the action of an aqueous liquor containing (1) chemical tanning agents, and (2) auxiliary chemicals to tanning and recovering leather, the improvement consisting of essentially of employing water-insoluble aluminosilicate, containing bound water of the formula(Cat.sub.2/n O).sub.x.Al.sub.2 O.sub.3.(SiO.sub.2).sub.ywherein Cat represents a cation selected from the group consisting of alkali metals, bivalent metal ions, trivalent metal ions, and mixtures thereof, n represents an integer from 1 to 3 of the valence of said cation, x is an integer from 0.5 to 1.8 and y is an integer from 0.8 to 50, said aluminosilicates having an average particle size in the range of 0.1.mu. to 5 mm and a calcium binding power of from 0 to 200 mg CaO/gm of anhydrous active substance measured at 22.degree. C.

Abstract: A novel compound selected from the group consisting of the compound of the formula ##STR1## the metal salts, the ammonium salt and the salts with nitrogen bases, a process for the preparation of the said compounds and a process for the preparation of 7-aminocephalosporanic acid starting from a compound of formula I.