Hoechst Aktiengesellschaft

Th. Goldschmidt Ag

Hermann Hoffmann

Werner Ritschel

Frederic Mabire

Gerd Reinhardt

Gotz Koerner

Gerd Rossmy

Michael Mitzlaff

Manfred Hofinger

Christoph Porz

Herbert Wirtz

Peter Zaske

Heinz Theile

Dietrich Wolter

Aqueous aldehyde solutions for trapping hydrogen sulfide comprising 5 to 50% by weight of an aldehyde and 1 to 5% by weight, relative to the aldehyde solution of a formulation comprising

Aqueous aldehyde solutions for trapping hydrogen sulfide in natural gas

Alkenylaminomethylenephosphonic acids of the formula ##STR1## in which R.sub.1 is hydrogen, C.sub.4 -C.sub.10 -alkyl, phenyl, naphthyl, methylphenyl, hydroxyphenyl, methoxyphenyl, methylnaphthyl, hydroxynaphthyl or methoxynaphthyl,

Alkenylaminomethylenephosphonic acids and copolymers thereof with

Fatty acid esters of oxalkylated alkylalkylenediamines, which may be quaternized:

Esters of fatty acids, which may be quaternized, from oxalkylated

Salts of alkenylsuccinic acid monoamides of the formulae ##STR1## wherein R.sup.1 is C.sub.6 -C.sub.22 -alkenyl, preferably C.sub.9 -C.sub.18 -alkenyl, A is the protonized radical of an amidoamine of the formula II ##STR2## R.sup.2 is C.sub.5 -C.sub.22 -alkyl, preferably C.sub.10 -C.sub.18 -alkyl, C.sub.5 -.sub.22 -alkenyl or cycloalkyl, preferably C.sub.10 -C.sub.18 -alkenyl or cycloalkyl, R.sup.3 is a group of the formula ##STR3## R.sup.4 is either a group of the formula --COR.sup.2, R.sup.5 at the same time being hydrogen, or R.sup.4 and R.sup.5 at the same time have the same meaning as R.sup.3, Y is hydrogen or methyl, n is a number from 0 to 12 and x is a number from 1 to 3. These compounds are suitable as corrosion inhibitors in water-in-oil emulsions, in particular for petroleum and petroleum products.

Salts of alkenylsuccinic acid monoamides

This invention relates to an emulsion-breaking composition comprising about 70 to 99.8% by weight of at least one silicon-free demulsifier, and about 0.2 to 30% by weight of a mixed polyoxyalkylene-polysiloxane block polymerizate, the polyoxyalkylene blocks of which have a molecular weight of about 500 to 4000 and are composed of polyoxyethylene and polyoxypropylene blocks in a weight ratio of 40 to 60 to 100:0, and the polysiloxane blocks of which contain 3 to 50 silicon atoms per block. The invention also includes a process for breaking emulsions using the novel emulsion-breaking composition.

Use of demulsifying mixtures for breaking petroleum emulsions

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Kelkheim, Germany

Hermann Hoffmann