Basf Aktiengesellschaft

Karl Stork

Knut Oppenlaender

Ortwin Schaffer

Norbert Greif

Klaus Barthold

Heinrich Hartmann

Walter Denzinger

Erich Schwartz

Herbert Bay

Wolfgang Reuther

Manfred Herrmann

Juergen Weiser

Ewald Daubach

Friedrich Hovemann

Rolf Fikentscher

Maximilian Angel

Johannes Perner

Joachim Pakusch

Thomas Schwerzel

Hans-Henning Vogel

Herbert Helfert

Gernot Franzmann

Klaus Lorenz

Hans-Ulrich Wekel

Hermann Graf

Franz Frosch

Guenter Uhl

Brigitte Wegner

Hermann Birkhofer

Claus Peter Jakob

Hans-Georg Scharpenberg

Adolf Stuebinger

Brigette Wegner

Self-tanning, pretanning and assist tanning of pelts and skin pelts and

Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases and formaldehyde, obtainable by

Condensation polymers of sulfonated phenols, urea, other organic

Use of copolymers based on long-chain alkyl vinyl ethers and

Copolymers which are obtainable by free radical copolymerization of (a) C.sub.8 --C.sub.40 -monoolefins with (b) ethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic anhydrides by mass polymerization at from 80.degree. to 300.degree. C. to give copolymers having molecular weights of from 500 to 20,000 g/mol, subsequent solvolysis of the anhydride groups of the copolymers and partial or complete neutralization of the carboxyl groups formed during the solvolysis, in an aqueous medium by means of a base, and which are present in the form of aqueous dispersions or solutions, are used as agents for rendering leathers and skins water-repellent.

Copolymers based on long-chain olefins and ethylenically unsaturated

Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde can be obtained by

Products of the condensation of phenolmonosulfonic acids,

Mixtures of polyglycerol fatty esters obtainable by partial esterification of a polyglycerol mixture consisting of

Use of mixtures of polyglycerol fatty esters as emulsifiers in cosmetic

Copolymers based on long-chain unsaturated esters and ethylenically

A process for the preparation of ether sulfonates or polyglycol ether sulfonates by reacting an organic alcoholic or phenolic compound or the corresponding alkoxylate in aqueous solution with vinyl sulfonate in the presence of from 0.1 to 3.0% by weight of an alkaline catalyst and, if required, additionally in the presence of a phase-transfer catalyst, and ether sulfonates or polyglycol ether sulfonates prepared by this process and of the general formula

Preparation of ether sulfonates and polyglycol ether sulfonates, and

Pumpable free-flowing aqueous coal dispersions containing a special non-ionic dispersant which is a polyalkylene oxide bisphenol A derivative, and the use of the said dispersant in coal/water dispersions.

Aqueous coal dispersions

Aqueous, pumpable, free-flowing coal dispersions which may contain methanol and contain a special, oxyethylated, straight-chain, saturated fatty alcohol mixture as a nonionic dispersant, and the use of this dispersant in coal/water dispersions.

The subject invention relates to compositions which inhibit the corrosion caused by CO.sub.2 and H.sub.2 S in the transport and storage of crude oils, which are generally water-in-oil, in particular salt-water-in-oil emulsions. The corrosion inhibitors are mixtures of certain imidazoline or tetrahydropyrimidine derivatives, precursors thereof, or their complexes with sulfur and certain maleinamidic acids.

Inhibitors against corrosion caused by CO.sub.2 and H.sub.2 S in

The subject invention relates to salts of polymaleic acids having a molecular weight between 200 and 1500 and to their use in preventing the corrosion of metal caused by hydrogen sulfide and carbon dioxide in water-in-oil emulsions such as crude oil.

Ammonium salts of polymaleic acids and use as corrosion inhibitors in

Salts of polymaleic acids, having molecular weights of from 200 to 1,500, with amines, of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is hydrogen, C.sub.9 -C.sub.20 -alkyl or C.sub.9 -C.sub.20 -alkenyl and R.sup.3 is C.sub.9 -C.sub.20 -alkyl or C.sub.9 -C.sub.20 -alkenyl.

Ammonium salts of polymaleic acids, and their use as corrosion

The invention relates to corrosion inhibitors which are amides of cyclic amidines. The inhibitors are particularly useful for preventing the corrosion of metals caused by H.sub.2 S and CO.sub.2 in water-in-oil, particularly in saltwater-in-oil emulsions.

Cyclic amidine based corrosion inhibitors which inhibit corrosion caused

The subject invention relates to corrosion inhibitors prepared by reacting certain imidazolines or precursors thereof with sulfur. The corrosion inhibitors are particularly useful in inhibiting corrosion of metal tanks caused by CO.sub.2 and H.sub.2 S ('acid gas') during the transport and storage of crude oils.

Imidazoline based corrosion inhibitors which inhibit corrosion caused by

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Lampertheim, Germany

Karl Stork