Abstract: A process for the preparation of a 2,3-dioxo-1,4-benzoxazine derivative of the formula I ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is hydrogen, alkyl, halogen, haloalkyl, alkoxy, haloalkoxy or nitro, by oxidizing an isatin of the formula II ##STR2## where R.sup.1 and R.sup.2 have the above meanings, with a peroxydisulfate dissolved or suspended in 30-98% strength sulfuric acid.The 2,3-dioxo-1,4-benzoxazine derivatives obtainable by the novel process have fungicidal or fungistatic properties.

Abstract: Adducts obtained by reacting an epoxide compound with guanidine or a guanidine derivative, using not less than 1 mole of guanidine or guanidine derivative per epoxide equivalent of the epoxide compound; the adducts may or may not be partially or completely neutralized by adding acid, and may additionally contain blocked isocyanate groups.The novel adducts may be used, in combination with a completely blocked polyisocyanate, aminoplast resin and/or phenoplast resin, as binders in coating agents, and for the cathodic electrocoating of metal articles.

Abstract: A process for texturizing bundles of filaments of synthetic high molecular weight materials at high speed, wherein the filament bundle is passed through a feed nozzle and is then brought into contact with a hot gaseous medium which is undergoing a vortical motion and has acquired a vortex angle of from 10.degree. to 70.degree. as a result of passage through a vortex chamber, is then heated by the fluid medium in a downstream tubular chamber and is subsequently fed to an expansion stage to produce the crimp, and apparatus for carrying out this process.

Abstract: A process for the manufacture of acicular magnetic iron oxide consisting of a core of gamma-iron(III) oxide and a ferrite shell which contains, based on the total amount of magnetic material, from 0.2 to 12 percent by weight of cobalt(II) ions and from 0.1 to 15 percent by weight of iron(II) ions, wherein a solution containing cobalt(II) hydroxide and iron(II) hydroxide is applied to acicular gamma-iron(III) oxide particles and the latter are heated at 100.degree.-220.degree. C.

Abstract: A process for the manufacture of poly-.alpha.-olefins by polymerizing .alpha.-olefins by means of a catalyst system comprising (1) a titanium-containing component obtained from (1.1) a compound of the formula TiCl.sub.3.1/3AlCl.sub.3 and (1.2) an organic electron donor, containing phosphorus, nitrogen and/or oxygen atoms, which has been milled with the compound of the formula TiCl.sub.3.1/3AlCl.sub.3 (1.1), in order to form a complex compound, the milling being carried out without assistants or additives in a vibratory ball mill under specific acceleration conditions and at a temperature which is from 4.degree. to 10.degree. C. below the temperature at which the particles of the material being ground begin to agglomerate, and (2) an aluminum-containing component, in which process the titanium-containing component (1) of the catalyst system used is one which has been treated, after milling and before polymerization, with (i) titanium tetrachloride and (ii) an ether and/or an ester.

Abstract: Process for the production of formaldehyde-free finishing agents for textiles containing or consisting of cellulose which is based on the reaction of urea or symmetrically disubstituted urea with glyoxal in the presence of buffer salts and alcohols at a pH of below 7, buffered mixtures of 4,5-hydroxyethyleneureas or N,N'-disubstituted 4,5-dihydroxyethyleneureas partially etherified in 4- and 5-positions being formed.

Abstract: 2,2-Dichlorocyclopropylmethyl-phosphoric acid derivatives of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and are hydrogen or methyl,R.sup.4 is unbranched or branched alkoxy of up to 4 carbon atoms, unbranched or branched alkylthio of up to 4 carbon atoms, amino, or alkylamino or dialkylamino, where each alkyl is of up to 5 carbon atoms and is linear or branched,Y is oxygen or sulfur andX.sup.1, X.sup.2, X.sup.3 and X.sup.4 are identical or different and each is hydrogen, halogen, nitro, cyano, methyl or methylthio,and their use for controlling pests from the classes of insects, Arachnidae and Nemathelminthes.

Abstract: A process for the manufacture of acicular ferromagnetic iron particles by reducing an iron(III) oxide which carries a shape-stabilizing surface coating and has been produced by heating acicular iron(III) oxide hydroxide at 250.degree.-390.degree. C. in an atmosphere containing water vapor at a partial pressure of not less than 30 mbar, with hydrogen at 275.degree.-425.degree. C.

Abstract: Process for finishing textiles of natural or regenerated cellulose, which have been pretreated with liquid ammonia, wherein the finishing agent used is an N-monomethylol compound or N-monoalkoxymethyl compound of 4-hydroxy- or 4-alkoxy-5,5-dimethylpropyleneurea. The process couples a high degree of finishing effect (in respect of improvement of the shrink resistance and wrinkle resistance) with only a very slight effect on the hand and especially on the tensile strength.

Abstract: New tetrahydro-1,3-oxazines of the formula ##STR1## where R denotes linear or branched haloalkyl of up to 3 carbon atoms, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are identical or different and each denotes hydrogen or linear or branched alkyl of up to 3 carbon atoms, R.sup.6 denotes hydrogen or linear or branched alkyl of up to 8 carbon atoms, R.sup.7 denotes hyrogen, linear or branched alkyl of up to 8 carbon atoms, alkoxyalkyl of up to 6 carbon atoms or dialkoxyalkyl of up to 8 carbon atoms, and R.sup.6 and R.sup.7 may together form a methylene chain of 4 or 5 carbon atoms.The compounds are antagonistic agents and, as such, increase the tolerance of herbicidal acetanilides by crop plants. Herbicidal agents containing the tetrahydro-1,3-oxazines in combination with haloacetanilides are suitable for combating unwanted plant growth in Indian corn and cereal crops.

Abstract: A process for the manufacture of 4,4'-diphenylmethane diisocyanate and a mixture of diphenylmethane diisocyanate isomers containing a controllable amount of uretdione and hydrolizable chlorine which comprises feeding crude MDI to an evaporator, condensing a head fraction in two stages in the presence of an inert gas, feeding the first stage condensate to a distillation column, producing a mixture of diphenylmethane diisocyanate isomers as an overhead, producing 4,4'-diphenylmethane diisocyanate as a side draw, and condensing each of the overhead and side draw in two stages in the presence of an inert gas.

Abstract: Uniformly dyed water-swellable cellulosic fibers which have been produced by contacting water-swellable cellulosic fibers successively or simultaneously with water, with ethylene glycol, propylene glycol or derivatives of these and with an essentially water-insoluble dye of the formula ##STR1## where Y is unsubstituted or substituted phenyl or naphthyl or an unsubstituted or substituted saturated or unsaturated 5-membered or 6-membered heterocyclic radical, two of the three radicals X are hydroxyl and the remaining radical X is ##STR2## where A is chlorine, bromine, cyano, nitro, an aliphatic, cycloaliphatic, araliphatic or aromatic radical and n is 0, 1, 2 or 3 and where, if n>1, the radicals are identical or different. Deep reddish blue to green dyeings or prints are obtained. The dyeings have very good fastness characteristics.

Abstract: 1-Haloalkyl isocyanates and 1-alkenyl isocyanates are prepared by reacting 1-haloalkylcarbamic acid halides or 1-haloalkyl isocyanates with .alpha.-pinene.The 1-alkenyl isocyanates and 1-haloalkyl isocyanates obtained according to the invention are valuable starting materials for the preparation of pest control agents, dyes, drugs, water-repellent textile finishes, detergents, plastics, bleaches and adhesives.

Abstract: Flame-retardant antistatic polymer additives are provided which inhibit the buildup of electrostatic charges upon the addition of such compositions to synthetic polymeric fibers, i.e., polyamide fibers, and at the same time do not contribute to the flammability characteristics of such polymeric fibers. The flame-retardant antistatic polymer compositions are useful in combinations with fibers such as polyamide, polyester, polyurea, polyurethane, polysulfonamide, polyolefin and polyacrylic fibers. The antistatic effect is obtained by the process of coating the fibers or dispersing in or on the fibers up to about 12 percent by weight of a polymer composition which is the reaction product of:(a) a polyoxyalkylene compound or polyester thereof and(b) at least one reactant selected from the group consisting of (1) a diol, (2) a polyester and (3) an aliphatic or aromatic diacid or derivative of (3), wherein at least one said reactant is halogenated.

Abstract: A process for removing oligomer deposits from dyed and non-dyed textile materials which consist of polyester fibers or of blends of these fibers with other fibers, and from dyeing machinery, by a treatment with an aqueous, alkaline liquor which contains from 0.1 to 10 g/l of a quaternary ammonium compound carrying not less than two C.sub.6 -C.sub.22 -alkyl or -alkenyl groups on the quaternary nitrogen, at up to 100.degree. C. The oligomers are hydrolyzed and are removed together with the treatment liquor.

Abstract: N-Aryloxazolidine-2,4-diones are prepared by reacting a nitrobenzene with a 2-hydroxycarboxylic acid ester and carbon monoxide in the presence of selenium and a basic compound under super-atmospheric pressure and at an elevated temperature.The N-aryloxazolidine-2,4-diones of the formula I, obtainable by the process of the invention are valuable active ingredients and starting materials for the preparation of crop protection agents, dyes and drugs.

Abstract: An improved process for the preparation of potassium ribonate and of ribonolactone, which is an interesting intermediate for the preparation of riboflavin (vitamin B.sub.2), starting from potassium arabonate. An aqueous potassium arabonate solution is epimerized by adding a water-soluble non-ionic organic solvent, after which the greater part of the non-epimerized potassium arabonate can be separated off in a crystalline form. The mother liquor, which essentially contains potassium ribonate in addition to a small amount of unconverted potassium arabonate, is greatly concentrated and cooled, whereupon pure potassium ribonate crystallizes out; the latter can be lactonized in the conventional manner.

Abstract: Azo compounds of the general formula ##STR1## where D is the radical of a diazo component of the aminoanthraquinone or aminophthalimide series, or the radical of a tetraazo component H.sub.2 N--D--NH.sub.2 having the formula: ##STR2## where Z is a direct bond, SO.sub.2, NH, CO, SO.sub.2 NH, CONH, NHCONH or NHCOCONH and the rings B are unsubstituted or substituted by Cl, Br, CH.sub.3, NO.sub.2 or OCH.sub.3 ; wherein said radical D is free from complex-forming hydroxyl and carboxyl groups and from ionic groups, n is 1 or 2, R is hydrogen or an aromatic radical, X is hydroxyl, alkyl, a carboxylic acid ester group, unsubstituted or substituted aryl or acylamino, and the ring A may be substituted but is free from SO.sub.3 H groups, are exceptionally suitable for use as pigments, for example for coloring surface coatings, printing inks or plastics.

Abstract: Phthalocyanine formulations which comprise a mixture of (a) phthalocyanine and (b) from 2 to 20% by weight, based on (a) of one or more urea derivatives of the formula K-(-NHCO-NH-R).sub.2 (I), where K is 1,5-naphthylene or 4,4'-diphenylenemethane, R is alkyl of 12 to 18 carbon atoms, alkenyl of 12 to 18 carbon atoms, 3-(alkoxy of 8 to 18 carbon atoms)-propyl, 2-(alkylamino of 8 to 18 carbon atoms)-ethyl or (CH.sub.2).sub.3 --O--(CH.sub.2 --CH.sub.2 O).sub.n --R.sup.1, R.sup.1 is alkyl of 2 to 8 carbon atoms or phenyl and n is 1, 2, 3 or 4, and which are obtained by milling (a) with (b) in the absence of a grinding medium.When used in printing inks, such as offset printing inks, the formulations give deeply colored prints in very pure hues, with very low graininess of the ink.

Abstract: A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkali metal and/or alkaline earth metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20.degree. C., and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.