Basf Aktiengesellschaft

Basf Aktiengeselschaft

Hans-Helmut Goertz

Axel Sanner

Hans-Juergen Raubenheimer

Roland Saive

Walter Denzinger

Guido Funk

Martin Lux

Rainer Konrad

Friedrich Vogel

Roger G Klimesch

Ferdinand Straub

Hans-Joachim Mueller

Stefan Marcinowski

Godofredo Follmer

Heinrich Hartmann

Alfred Oftring

Richard Baur

Wolfgang Rohde

Oral Aydin

Guenther Schweier

Norbert Wagner

Siegfried Lang

Lothar Schlemmer

Paul Naegele

Rainer Hummerich

Gerhard Bleckmann

Dieter Stoeckigt

Peter Fickeisen

Franz Frosch

Reinhard Spengler

Karl-Peter Farwerck

Guenter Hatzmann

Hans-Werner Neumann

Albrecht Kolb

Klaus Laemmerhirt

Werner Oschmann

Polyalk-1-enes are prepared by polymerization of alk-1-enes with the aid of the compound bis(cyclopentadienyl)-chromium(II)

Preparation of homo- and copolymers of alk-1-enes

A process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins, in which

Preparation of a supported catalyst for the polymerization of

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

Preparation of homopolymers of ethylene or copolymers of ethylene

Multistage graft copolymer and its use for the preparation of

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.

Laying tiles using a tile adhesive

Aqueous acidic cleaner formulations contain, as essential components,

Aqueous acidic cleaner formulations

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.

Preparation of copolymers of ethylenically unsaturated dicarboxylic

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.

Preparation of metal salts of carboxyl-containing polymers

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.

Preparation of copolymers of monoalkyl maleates and vinyl alkyl ethers

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.

Continuous method of tableting

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.

Polymers of oxyalkylated unsaturated quaternary ammonium salts, their

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.

Preparation of 3-methyl-1-vinylimidazolium chlorides

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.

Preparation of solid pharmaceutical forms

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.

Preparation of an insoluble biocatalyst

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Freinsheim, Germany

Hans-Helmut Goertz