Abstract: Homopolymers of ethylene or copolymers of ethylene with minor amounts of other C.sub.3 -C.sub.12 -alk-1-enes are prepared by catalytic polymerization in a suspension or in the gas phase in the presence of an antistatic agent at from 50 to 120.degree. C. and from 5 to 50 bar by a process in which the antistatic agent used is a mixture of the following substances:a) a metal salt of medialanic acid of the formula (I) ##STR1## b) a metal salt of an anthranilic acid of the general formula (II) ##STR2## where the organic radical R.sup.1 is either.alpha.)--CO--(CH.sub.2).sub.x --CH.sub.3 (II.alpha.)or.beta.)--CO--(CH.sub.2).sub.y --CH.dbd.CH--(CH.sub.2).sub.z --CH.sub.3(III.beta.)and x, y and z are each an integer and are from 6 to 18 for x, from 1 to 16 for y, from 1 to 16 for z and from 4 to 17 for y+z, andc) a polyamine obtainable by reacting epichlorohydrin and an aliphatic primary monoamine or an N-alkylalkylenediamine of the general formula (IV)R.sup.2 NH--R.sup.3 --NH.sub.2 (IV),whereR.sup.2 is C.sub.8 -C.

Abstract: Graft copolymers obtained byA) emulsion polymerization of from 5 to 35% by weight of a monomer mixture ofa.sub.1) 60-80% by weight of one or more vinylaromatic monomers,a.sub.2) 20-40% by weight of one or more ethylenically unsaturated nitriles,B) subsequent emulsion polymerization, in the presence of the emulsion polymer obtained in stage A), of 20-45% by weight of a monomer mixture ofb.sub.1) 50-75% by weight of one or more vinylaromatic monomers,b.sub.2) 25-50% by weight of one or more C.sub.1 -C.sub.18 -alkyl acrylates,C) subsequent emulsion polymerization, in the presence of the emulsion polymer obtained in stage B), of 5-35% by weight of a monomer mixture ofc.sub.1) 60-80% by weight of one or more vinylaromatic monomers,c.sub.2) 20-40% by weight of one or more ethylenically unsaturated nitriles,D) subsequent emulsion polymerization, in the presence of the emulsion polymer obtained in stage C), of 15-45% by weight of a monomer mixture ofd.sub.1) 80-99.9% by weight of one or more C.sub.1 -C.sub.

Abstract: Tiles are laid using a tile adhesive which is based on a polymer dispersion and conventional additives and contains, as a thickener, a compound of the general formula I ##STR1## where R is a radical of dihydric to hexahydric alcohol of 2 to 10 carbon atoms, which radical is bonded via oxygen, R.sup.1 is alkyl, alkoxymethyl or alkenyloxymethyl or a mixture of these radicals, each having 16 to 30 carbon atoms in the alkyl, alkoxy or alkenyloxy radical, A is --CH.sub.2 CH.sub.2 --O-- (=EO) alone or as a mixture with ##STR2## --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --O--, where A is not less than 50, preferably not less than 70, mol % of --CH.sub.2 CH.sub.2 O--, x is from 12 to 500, y has a mean value (averaged over a large number of molecules) of from 0.3 to 5, preferably from 0.5 to 2, and n is an integer from 2 to 6.

Abstract: Aqueous acidic cleaner formulations contain, as essential components,(a) from 1 to 20% by weight of one or more nonionic surfactants based on oxyalkylated fatty alcohols, fatty acids, fatty amines, fatty amides or alkane-sulfonamides,(b) from 0.1 to 15% by weight of one or more polyetherpolyols which are obtainable by reacting a dihydric to hexahydric alcohol of 2 to 10 carbon atoms with an alkylene oxide of 2 to 4 carbon atoms and reacting this product with a 1,2-alkylene oxide or alkyl or alkenyl glycidyl ether of 8 to 30 carbon atoms and(c) from 1 to 40% by weight of one or more acids.

Abstract: Copolymers of ethylenically unsaturated dicarboxylic anhydrides and alkyl vinyl ethers are prepared by copolymerization of the monomers from which the copolymers are derived, in the presence or absence of up to 2% by weight, based on the monomers, of a crosslinking agent containing two or more ethylenically unsaturated double bonds, in the presence of a polymerization initiator in an ester of not less than 5 carbon atoms which is obtained from a saturated aliphatic carboxylic acid and a saturated monohydric alcohol, as a solvent for the monomers, by a precipitation polymerization method.

Abstract: Metal salts of carboxyl-containing polymers are prepared by suspending carboxyl and/or carboxylic anhydride group-containing polymers in an inert solvent, reacting with a pulverulent basic metal compound, and then working up the suspension.

Abstract: Copolymers of monoalkyl maleates and vinyl alkyl ethers are prepared by free radical copolymerization of maleic anhydride and a vinyl alkyl ether followed by reaction with an alkanol, by a process in which the vinyl alkyl ether component is present in excess in the reaction mixture in each phase of the polymerization, the free radical copolymerization is carried out in acetone and the acetone is removed by distillation during or after ester formation at up to 70.degree. C.

Abstract: Extrudable pharmaceutical mixtures are tableted by a continuous method in which the mixture is extruded and the still deformable extrudate is pressed between two rollers which are driven in opposite directions and possess depressions opposite one another in the roller shell, the form of these depressions determining the tablet shape.

Abstract: Polymers are obtained by polymerization of water-soluble monomers which contain one or more polymerizable olefinic double bonds and a quaternary nitrogen atom which is substituted by one or more hydroxyalkyl groups and are present in the form of halide-free salts, with or without further comonomers.

Abstract: 3-Methyl-1-vinylimidazolium chlorides are prepared by quaternizing N-vinylimidazoles in aqueous solution with methyl chloride and are used for the preparation of water-soluble homo- or copolymers.

Abstract: Process for the preparation of solid pharmaceutical forms by mixing one or more pharmaceutical active compounds with one or more fusible, pharmacologically tolerated binders and, if required, other conventional pharmaceutical auxiliaries, at from 50.degree. to 180.degree. C., and subjecting the mixture to injection molding or extrusion and shaping, wherein the fusible binder used is a NVP polymer which contains not less than 20% by weight of NVP as copolymerized units, and, where they are present, all of whose comonomers contain nitrogen and/or oxygen.

Abstract: An insoluble biocatalyst is prepared by forming a mixture consisting essentially of the biocatalyst, one or more water-soluble compounds having two or more acrylamide or meth-acrylamido groups and one or more water soluble amines possessing two or more hydrogen atoms bonded to an amine nitrogen, and forming a gel from the mixture. The water-soluble amine is selected from ammonia, lower diamines, lower polyamines, primary monoamines, polyethyleneimine and polyvinylamine. Beads containing the biocatalyst may be formed by suspending the mixture in a water-immiscible solvent to form droplets prior to gelling. The biocatalyst may be an enzyme, cells or cell fragments.

Abstract: A biologically active protein which is bonded to a water-insoluble porous copolymer based on N-vinylimidazole and/or substituted N-vinylimidazoles and monomers which can be copolymerized therewith, its preparation and its use for carrying out enzymatic reactions.

Abstract: A process for the preparation of insoluble, only slightly swellable, granular polymers of basic vinyl-heterocyclic compounds and of their copolymers with up to 30% by weight of copolymerizable monomers and 0.1-10% by weight of crosslinking agent by exclusion of (atmospheric) oxygen from the mixture of monomer and crosslinking agent, without addition of any initiator or catalyst, and the use of the polymers obtained as ion exchangers, adsorbents and carriers for proteins.