Basf Aktiengesellschaft

Basf Corporation

Hans-Juergen Raubenheimer

Walter Denzinger

Heinrich Hartmann

Wolfgang Trieselt

Richard Baur

Albert Hettche

Rolf Schneider

Hans-Helmut Goertz

Karl Hennig

Axel Sanner

Johannes Perner

Ekhard Winkler

Franz Frosch

Felix Richter

Ulrich Goeckel

Karlheinz Messmer

Alexander Kud

Ferdinand Straub

Friedrich Vogel

Harald Meyer

Hermann Fischer

Werner Hoffmann

Bernd Wenderoth

Birgit Potthoff-Karl

Marc Heider

Klaus Barthold

Paul Diessel

Paul Naegele

Angelika Funhoff

Albrecht Eckell

Horst Trapp

Gerd Konrad

Erich Schwartz

Hans J Richter

Karl-Heinz Buechner

Josef Mueller

Klaus Wulz

John Feldmann

Gerhard Kleinpeter

Guenter Hoerdt

Albrecht Kolb

Water-soluble, carboxyl-containing copolymers, the preparation thereof

Copolymers which contain a) from 2 to 50 mol % of vinyl alkyl ethers having 3 to 30 carbon atoms in the molecule, b) from 10 to 88 mol % of monoethylenically unsaturated dicarboxylic anhydrides and c) from 10 to 88 mol % of dialkyl esters of monoethylenically unsaturated dicarboxylic acids as typical monomer units in polymerized form are prepared by copolymerizing the monomers a), b) and c) at from 40.degree. to 180.degree. C. in the presence of free radical initiators and are used as film-forming resins in hair sprays and, in the form of the alkali metal, ammonium or alkaline earth metal salts, as thickeners for aqueous systems, such as cosmetic and pharmaceutical formulations, textile print pastes, liquid detergents and cleaning agents.

Copolymers based on vinyl ethers and monoethylenically unsaturated

Graft copolymers obtainable by free radical-initiated copolymerization of

Graft copolymers of monosaccharides, oligosaccharides, polysaccharides

Crude oil middle distillates with improved cold flow properties, containing small amounts of

Middle distillates of crude oil having improved cold flow properties

A process for the preparation of copolymers which contain monoethylenically unsaturated monocarboxylic acids and dicarboxylic acids as copolymerized monomer units, which comprises copolymerizing

Preparation of copolymers of monoethylenically unsaturated

Copolymers of monoalkyl maleates or maleic acid and salts thereof and vinyl alkyl ethers are prepared by free radical copolymerization of maleic anhydride and vinyl alkyl ethers and subsequent reaction with an alkanol or water and optionally metal hydroxides and/or oxides in a process wherein at every stage of the polymerization the vinyl alkyl ether component is present in excess in the reaction mixture, the free radical copolymerization is carried out in acetone and the acetone is removed by distillation during or after the esterification or hydrolysis, which comprises using a peroxyester of a carboxylic acid of 8 or more carbon atoms as polymerization initiator. The copolymers obtained are used in cosmetic preparations.

Preparation of copolymers of monoalkyl maleates or maleic acid and salts

A detergent composition contains as essential ingredients surfactants and from 0.1 to 15% by weight of water-soluble or -dispersible polymers obtainable by oxidation of polymers containing not less than 10 mol % of carboxyl-containing monoethylenically unsaturated monomers as copolymerized units and having Fikentscher K values of from 8 to 300.

Water-soluble or -dispersible, oxidized polymer detergent additives

Pulverulent polymers of acrylic acid and methacrylic acid are prepared by polymerizing (a) from 100 to 70% by weight of acrylic acid, methacrylic acid or a mixture thereof and (b) from 0 to 30% by weight of vinylsulfonic acid or an alkali metal salt thereof in a monohydric C.sub.1 -C.sub.8 -alcohol, water or a mixture thereof in a pulverulent bed in the presence of a polymerization initiator and from 0.05 to 10 mol % of thiocarboxylic acid and/or a mercaptoalcohol and from 0.05 to 10 mol % of propionic acid or formic acid as regulators, each percentage being based on the monomers used in the polymerization, by maintaining the pulverulent state during the polymerization, removing the heat of polymerization by distilling off the solvent and recirculating the reaction mixture.

Preparation of pulverulent polymers of acrylic and/or methacrylic acid

Water-soluble copolymers of maleic acid useful as water treatment agents are prepared by copolymerizing

Preparation of water-soluble copolymers of maleic acid and use thereof

The particle size is controlled in the preparation of hydrophilic polymer powders by polymerization of water-soluble monoethylenically unsaturated monomers in a powder bed in the presence of a polymerization initiator and an inert auxiliary liquid by a method in which a solution of the monomers in an inert auxiliary liquid is divided into fine drops with the aid of a multimaterial nozzle which dips into the powder bed, using an inert gas stream, and the particle size of the resulting polymer powder is regulated by varying the amount of inert gas.

Controlling the particle size in the preparation of polymer powders

Liquid, alkaline detergent formulations which contain as essential constituents a surfactant, water and 0.1-20% by weight of partially esterified copolymers are obtainable by the copolymerization of

Use of partially esterified copolymers in liquid detergents

Oxyalkylated, carboxyl-containing polymers are prepared by reacting

Preparation of oxyalkylated, carboxyl-containing polymers

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

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Ketsch, Germany

Hans-Juergen Raubenheimer