Abstract: Propylene-ethylene copolymers are obtained by two-stage polymerization from the gaseous phase in an agitated fixed bed by means of a Ziegler-Natta catalyst system that contains in addition to a titanium-containing solid component also an aluminum compound as co-catalyst, wherein as Ziegler-Natta catalyst system a system is used which, following the reaction of the titanium-containing solid component with the co-catalyst, is deactivated by reaction with carbon dioxide. The copolymers are used for producing fibers, films and moldings.

Abstract: Thermoplastic molding materials contain, based in each case on the sum of components A, B and C,A: from 10 to 90% by weight of a polymer A composed of styrene and/or substituted styrene,B: from 10 to 90% by weight of a polyolefin B andC: from 5 to 40% by weight of a star block copolymer C containing not less than 50% by weight of styrene and prepared by anionic polymerization of styrene and butadiene and/or isoprene, coupling and subsequent selective hydrogenation.

Abstract: A colorant mixture for use in printing inks contains a pigment of formula I ##STR1## a basic dye of the formula II ##STR2## where the substituents are as defined in the specification L-A. and exhibits higher color strength than that of the pigment of formula I alone.

Abstract: An improved process for preparing cyclic acetals of 3-formyl-2-butenyltriphenylphosphonium chloride by acetalization of 3-formyl-2-butenyl acetate with an aliphatic 1,3-diol, conversion of the resulting 4-acetoxy acetal into the corresponding 4-hydroxy acetal, Vilsmeier chlorination to give the corresponding 4-chloro acetal and subsequent reaction with triphenylphosphine entails carrying out the first 3 steps in an aliphatic or cycloaliphatic hydrocarbon or mixture of hydrocarbons with 6-8 carbons and the reaction with triphenylphosphine in an alkanol with 1-3 carbons and/or in aliphatic or cycloaliphatic hydrocarbon with 6-8 carbons or a corresponding mixture of hydrocarbons. The process is particularly advantageous when conversion of the 4-acetoxy acetal into the 4-hydroxy acetal is carried out with an aqueous alkali metal hydroxide solution in the presence of phase-transfer catalysts, and the first three, or all four, reaction stages are carried out in the same C.sub.6 -C.sub.8 -hydrocarbon.

Abstract: Hydroxypyridonecarboxamides of the formula I ##STR1## where: X is oxygen or sulfur;R.sup.1, R.sup.2 independently of each other are hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl or alkoxy, and these organic radicals are substituted or unsubstituted;R.sup.3 is hydrogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, halogen or nitro;R.sup.4 is alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkylthio, phenyl or a 5- or 6-membered heterocyclic, aliphatic or aromatic radical containing from one to three heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen, and these radicals are substituted or unsubstituted;with the exception of 6-methyl-4-hydroxypyrid-2-one-3-carboxamide and 6-methyl-4-hydroxypyrid-2-one-3-carboxylic acid-tert-butylamide.

Abstract: Novel proteins which have a molecular weight of about 42,000 daltons and have at the N terminus the amino acid sequenceXaa Thr Pro Tyr Ala Pro Glu Pro Gly Set Thr Cys Arg Leu Arg Gluwhere X is hydrogen, a phenylalanine residue (Phe) or the amino acid sequences Ala Phe, Val Ala Phe, Gln Val Ala Phe, Ala Gln Val Ala Phe, Pro Ala Gln Val Ala Phe or Leu Pro Ala Gln Val Ala Phe, and which are suitable for the treatment of diseases, are described.

Abstract: Process for preparing a pentane-1,5-diamine of the formula ##STR1## where R.sup.1 represents a variety of organic radicals including alkyl which can bear substituents such as hydroxyl, halogen, alkoxy, carbalkoxy, carboxyl, alkylamino, cycloalkyl or aryl, andR.sup.2 and R.sup.3 independently of one another, represent hydrogen or have the same meanings as R.sup.1 or together are a C.sub.4 -C.sub.7 -alkylene chain which is unsubstituted or substituted by one to five C.sub.1 -C.sub.4 -alkyl groups,which comprises:(a) reacting a .gamma.-cyanoketone of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given above, with excess ammonia in a first reaction space on an acidic heterogeneous catalyst at 20.degree.-150.degree. C. and 15-500 bar, and(b) hydrogenating the resulting reaction product in a second separate reaction space in the presence of excess ammonia on a cobalt, nickel or noble metal catalyst at 50.degree.-180.degree. C. and 30-500 bar.

Abstract: A molding material from a particulate graft polymer which consists ofA: a grafting base A based on an acrylate rubber andB: a graft B ofB1: from 40 to 89.9% by weight of at least one vinylaromatic monomer B1B2: from 10 to 49.9% by weight of at least one polar, coplymerizable, ethylenically unsaturated monomer B2B3: from 0.1 to 20% by weight of at least one monomer B3 containing one or more acidic groups.

Abstract: The present invention provides automotive cooling system cleaning formulations suitable for addition to antifreeze/coolant systems. The cleaning compositions use a mixture of a metal cleaning compound such as EDTA, polymeric polycarboxylates and alkoxylated alcohol based nonionic surfactants to provide rapid cleaning of the coolant system. The cleaning formulation is then removed from the cooling system.

Abstract: N-aryltetrahydrophthalimide compounds of the general formula I ##STR1## where is --S--C(R).sub.2 --, and a method for controlling undesirble plant growth.

Abstract: A process for the preparation of a 2,3-dihydrobenzofuran I ##STR1## or a derivative thereof, where R.sup.a and R.sup.b are C-organic radicals, involves reacting a 2-hydroxybenzyl alcohol II ##STR2## in the presence of an acidic ion exchanger resin and in the presence of an inert dehydrating substance. Novel 2,3-dihydrobenzofurans Ia, 2-acylphenols IVa and 2-hydroxybenzyl alcohols IIa, a process for their preparation, and their use as intermediates are also described.

Abstract: A process for the selective modification and reversible removal of extremely fine structures having dimensions of down to the nanometer and subnanometer range from the surface of a solid, comprises moving the fine tip of a probe, for example a surface-sensitive scanning probe, which is located at a distance in the .ANG.ngstrom range above the surface or is in contact with the surface, over the structure at essentially the same height and thus causing a change in this structure.

Abstract: 2-Hydroxy-3-phenoxy-propyl-substituted piperazines of the formula I ##STR1## in which R.sup.1 -R.sup.5, Y, m and n have the meaning indicated in the description, and the preparation thereof are described. The novel compounds are suitable for the therapy of oxygen deficiency diseases of the brain.

Abstract: Phenoxyalkyl-substituted heteroaromatics of the formulae Ia and Ib ##STR1## where the substituents have the following meanings: R.sup.1 C.sub.1 -C.sub.12 -alkyl, C.sub.2 -C.sub.12 -alkenyl, C.sub.2 -C.sub.12 -alkynyl, C.sub.1 -C.sub.12 -haloalkyl,C.sub.2 -C.sub.12 -haloalkenyl, C.sub.2 -C.sub.12 -haloalkynyl, C.sub.3 -C.sub.12 -alkoxyalkyl,C.sub.3 -C.sub.8 -cycloalkyl, C.sub.4 -C.sub.12 -cycloalkylalkyl, C.sub.3 -C.sub.8 -halocycloalkyl,C.sub.4 -C.sub.12 -halocycloalkylalkyl, C.sub.4 -C.sub.12 -cycloalkylhaloalkyl orC.sub.4 -C.sub.12 -halocycloalkylhaloalkyl;Z hydrogen, halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, C.sub.3 -C.sub.10 -cycloalkyl, nitro or cyano in the case of Ia and hydrogen, halogen, or C.sub.1 -C.sub.4 -alkyl in the case of Ib;X O, S, SO.sub.2 ;Q.sub.a substituted or unsubstituted azole;Q.sub.b substituted or unsubstituted heteroaromatic;methods of manufacturing compounds Ia and Ib, and their use for combating pests.

Abstract: Aqueous polymer dispersions containing,I as the disperse phase, a film-forming dispersion polymer andII in the aqueous phase, from 5 to 40% by weight, based on the total dry mass of I and II, of a completely or partially neutralized water-soluble copolymer ofa) from 50 to 80 mol % of an olefinically unsaturated mono- or dicarboxylic acid, of an anhydride of these acids or of a mixture of these monomers,b) from 20 to 50 mol % of a C.sub.3 -C.sub.12 -alkene, of styrene or of a mixture of these monomers andc) from 0 to 10 mol % of further monomers which can be subjected to free radical polymerization,and the powders obtained by spray-drying these polymer dispersions are suitable as binders for water-resistant plastics renders and coatings and as adhesives or adhesive components.

Abstract: Aqueous dispersions contain a polyurethane which consists essentially ofa) organic polyisocyanates and, if required, minor amounts of monoisocyanates,b) dihydroxy compounds having a molecular weight of from more than 500 to 10,000 g/mol and at least 2 carboxyl or carboxylate groups in the molecule and which are obtainable by reacting dihydroxy compounds with tetracarboxylic dianhydrides in a molar ratio of from 2:1 to 1.05:1,c) if required, polyhydroxy compounds which differ from (b) and have a molecular weight of from more than 500 to 5,000 g/mol,d) if required, compounds having at least one group which is reactive toward isocyanate and at least one anionic group or group convertible into an anionic group and having a molecular weight of from 60 to 500 g/mol ande) if required, compounds which differ from d) and e) and have at least 2 groups which are reactive toward isocyanate and a molecular weight of from 60 to 500 g/mol.

Abstract: Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases and formaldehyde, obtainable by(A) sulfonation of phenols with from 1.0 to 1.5 moles of sulfuric acid per mole of phenol and(B) condensation of these sulfonation products with(a) from 0.5 to 1.8 moles of urea per mole of phenol,(b) from 0.001 to 0.5 moles of at least one other organic nitrogen-base per mole of phenol, and(c) from 1.0 to 3.0 moles of formaldehyde per mole of phenol.The condensation polymers are suitable for use as tanning agents in the leather and skin-producing industry and as spraying aids for redispersible polymer powders.

Abstract: Abstract of the Disclosure: 2-Amino-4-fluoroalkoxy-1,3,5-triazines of the formula I ##STR1## where R.sup. is hydrogen, alkyl, alkenyl, alkynyl; R.sup.2 is hydrogen, halogen, haloalkyl, trifluoromethoxy or chlorodifluoromethoxy and n is 0 or 1 are prepared as described.

Abstract: Azo dyes useful for dyeing or printing textile fibers or fabrics and containing novel aminobenzo heterocycles as diazo component have the formula ##STR1## where X is nitrogen or a radical of the formula CR.sup.6, where R.sup.6 is hydrogen, C.sub.1 -C.sub.4 -alkoxycarbonyl or C.sub.1 -C.sub.6 -alkanoyl,R.sup.1 and R.sup.2 are substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl or substituted or unsubstituted C.sub.3 -C.sub.4 -alkenyl or additionally in the case of R.sup.1 hydrogen,R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkoxy,R.sup.4 is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.4 -alkoxy, substituted or unsubstituted C.sub.1 -C.sub.8 -alkanoylamino, C.sub.1 -C.sub.4 -alkylsulfonylamino, C.sub.3 -C.sub.4 -alkenoylamino or substituted or unsubstituted C.sub.1 -C.sub.4 -alkoxycarbonylamino, andR.sup.5 is hydrogen, nitro, halogen, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio or cyano.

Abstract: A solid block, controlled release composition suitable for use in toilet tanks, urinals and other water systems has an alkanolamide, surfactant and polyethylene glycol with a molecular weight of about 1450 to about 8000.