Abstract: Preparation of epoxides from olefins by means of aromatic peroxycarboxylic acids comprises a step A of epoxidizing the olefin and removing the resulting aromatic carboxylic acid from the epoxide, a step B of catalytically hydrogenating the removed aromatic carboxylic acid to the corresponding aromatic aldehyde, and a step C of oxidizing this aldehyde with oxygen or an oxygen-containing gas mixture back to the aromatic peroxycarboxylic acid for re-use for epoxidizing an olefin.

Abstract: Novel peptides of the formulaA--B--D--E--F--L,wherein A, B, D, E, F, and L have the meanings stated in the specification, and their preparation are disclosed. The novel compounds are suitable for controlling diseases.

Abstract: Catalysts of the formula I?A.sub.a B.sub.b O.sub.x !.sub.p ?C.sub.c D.sub.d Fe.sub.e Co.sub.f E.sub.i F.sub.j O.sub.y !.sub.q I,whereA is bismuth, tellurium, antimony, tin and/or copper,B is molybdenum and/or tungsten,C is an alkali metal, thallium and/or samarium,D is an alkaline earth metal, nickel, copper, cobalt, manganese, zinc, tin, cerium, chromium, cadmium, molybdenum, bismuth and/or mercury,E is phosphorus, arsenic, boron and/or antimony,F is a rare-earth metal, vanadium and/or uranium,a is from 0.01 to 8,b is from 0.1 to 30,c is from 0 to 4,d is from 0 to 20,e is from 0 to 20,f is from 0 to 20,i is from 0 to 6,j is from 0 to 15,x and y are numbers determined by the valency and frequency of the elements other than oxygen in I, and p and q are numbers whose ratio p/q is in the range from 0.001 to 0.

Abstract: Stabilizer mixture for organic material, in particular for plastics, comprising(a) one or more chroman derivatives of the general formula I ##STR1## (b) one or more organic phosphites of the general formula II ##STR2## or an organic phosphonite of the formula III ##STR3## or mixtures of the phosphites II and the phosphonite III and c) one or more amines of the general formula IV ##STR4## where the components (a) and (b) are present in the ratio of from 1:5 to 1:14 by weight and the component (c) is present in an amount of from 0.01 to 2.0% of the weight of (a)+(b) in the stabilizer mixture.

Abstract: Stable (cyclo)aliphatic polyisocyanate compositions obtainable by phosgene-free methods, preferably by thermal cleavage of (cyclo)aliphatic polycarbamates, are stabilized with carbon dioxide, advantageously in an amount of up to 0.3% by weight.

Abstract: Substituted phthalimidocinnamic acid derivatives I ##STR1## wherein the variables are as defined in the description are useful as herbicides and for the desiccation and/or defoliation of plants.

Abstract: Preparation of perylene-3,4-dicarbimides by reaction of a perylene-3,4,9,10-tetracarboxylic acid or of the corresponding anhydrides with a primary amine by performing the reaction in the presence of a tertiary nitrogen base as solvent and of a transition metal or transition metal salt as catalyst, and purification of perylene-3,4-dicarbimides obtained by reaction of a perylene-3,4,9,10-tetracarboxylic acid or of the corresponding anhydrides with a primary amine by heating the crude products initially in N-methylpyrrolidone and then treating the resulting N-methylpyrrolidone adducts in the presence of an organic diluent with a base, and if desired subjecting the subsequently isolated products to an additional treatment with an aqueous acid, and also novel perylene-3,4-dicarbimides and their use as fluorescent dyes, pigments or pigment additive precursors.

Abstract: At least one compound ##STR1## is added to mineral building materials modified with polymers in order to increase their adhesive power on foams based on polystyrene.

Abstract: Hydroxyalkyl-substituted aminoalkynes of the general formula I ##STR1## where at least one of the substituents R.sup.1, R.sup.4 or R.sup.5 is hydroxyalkyl are prepared in a reaction with heterogeneous catalysis.

Abstract: Multimetal oxides containing Mo, V and at least one of the elements W, Nb, Ti, Zr, Hf, Ta, Cr, Si and Ge and having a special three-dimensional atomic arrangement are used in catalysts for the catalytic gas-phase oxidation of organic compounds.

Abstract: A method of separating two immiscible, melt-viscosity-differing thermoplastic polymer components from a mixed liquid stream thereof forms two discrete and continuous phases having a sheath/core configuration, wherein the sheath substantially contains the polymer component with the higher melt viscosity and the core substantially contains the polymer component with the lower melt viscosity. The mixed liquid stream contains a predominant amount (i.e., greater than 50% by volume) of the higher viscosity polymer component and a minority amount (i.e., less than 50% by volume) of the lower viscosity polymer component. The method involves directing the stream through a shear zone at a shear temperature and a shear rate sufficient to form the two discrete and continuous phases, the first of which substantially contains the lower viscosity polymer component and the second of which substantially contains the higher viscosity polymer component.

Abstract: Agglomerated, finely divided, crosslinked vinylimidazole copolymers obtainable by free-radically initiated polymerization of N-vinylimidazoles of the formula ##STR1## where R, R.sup.1 and R.sup.2 are identical or different and each is H, C.sub.1 -C.sub.

Abstract: Liquid-crystalline compounds of the formula IX(--Y--A--Y--M--Y--B).sub.n I,whereX is an aromatic or aliphatic ring system,n is an integer from 2 to 6,each Y, independently of the others, is a direct bond, --COO--, --OCO--, --O--, --CONH-- or --CON(R)--, where R is C.sub.1 -- to C.sub.4 -alkyl,A is a spacer,M is a mesogenic group andB is a side chain,are particularly suitable for use in displays or for the production of light-reflecting coatings.

Abstract: A process for making ready-to-tuft, mock space-dyed bulked continuous filament yarn is a one-step process. It joins extruding, texturing, and interlacing to yield a yarn that may be tufted directly into carpet without further texturing or twisting. In another aspect, one or more additional strands may be inserted in the process. An apparatus for making the ready-to-tuft, mock space-dyed, bulked continuous filament yarn is described.

Abstract: Molding materials comprise polyarylene ethers, copolymers containing units which are derived from aromatic vinyl compounds and cyclic .alpha.,.beta.-unsaturated carboxylic anhydrides and carboximides, and furthermore fillers and rubber impact modifiers.

Abstract: A process for preparing polymers comprising peroxycarboxyl groups, wherein a suspension of a polymer comprising monoolefinically unsaturated dicarboxylic anhydride basic building blocks is mixed with hydrogen peroxide in an inert diluent.

Abstract: Use of compounds from the class of the phthalocyanines, naphthalocyanines, nickel dithiolene complexes, aminium compounds of aromatic amines, methine dyes or azulenesquaric acid dyes which have their absorption maximum in the range from 600 to 1,200 nm and/or a fluorescence maximum in the range from 620 to 1,200 nm, as markers for liquids, a process for detecting markers in liquids, and a detector suitable for this purpose.

Abstract: Metallic shaped bodies are produced from an injection-molding composition comprising at least one carbonyl metal powder and at least one element powder of metals from the group Cr, Mn, V, Si, Ti or of other metals which are at least as oxidation-sensitive by shaping, removing the binder and sintering. In place of an element powder, it is also possible to use an alloy powder comprising the corresponding metals.

Abstract: Nonaqueous additive systems which includes dispersant-coated pigments physically dispersed in a liquid nonaqueous polymeric carrier are added directly to a melt flow of a polymeric host material prior to spinning. The additive system is most preferably in the form of a particulate paste which can be added in metered amounts (dosed) to a melt flow of the polymeric host material prior to being spun into filaments. By providing a number of additive systems having a number of different additive attributes, and controllably dosing one or more into the melt flow of polymeric material, melt-spun filaments having different additive attributes may be produced on a continuous basis (i.e., without shutting down the spinning operation).

Abstract: Radiation-curable compositions of reduced oxygen sensitivity comprisea) radiation-curable, free-radically polymerizable compounds, andb) capped amino compounds which are surface-active in compounds a) and on irradiation with high-energy light liberate amino compounds having primary, secondary or primary and secondary amino groups, the overall number of hydrogen atoms bonded in the amino groups (amine hydrogens) being at least 2.