Chemische Fabrik Stockhausen & Cie

Chemische Fabrik

Chemische Fabrik Stockhausen Gmbh

Chemische Fabrik Stockhause & Cie

Eduard Barthell

Kurt Dahmen

Erich Kuster

Bernhard Goossens

Wolfgang Hubner

Miroslav Chmelir

Rudolf Nowak

Anthony Capelle

Otto Schmid

The invention relates to copolymers of esters of acrylic acid or methacrylic acid with unbranched alcohols that contain at least 16 C atoms, and maleic anhydride, and also the use of these copolymers as crystallization inhibitors in paraffin-bearing crude oils.

Copolymers of n-alkyl acrylates and maleic anhydride and their use as

The invention relates to a process for the preparation of .alpha.,.beta.-unsaturated N-substituted carboxylic acid amides, novel .alpha.,.beta.-unsaturated N-substituted carboxylic acid amides, a process for the polymerization of these novel .alpha.,.beta.-unsaturated N-substituted carboxylic acid amides, including the polymers, and the use of these polymers as sedimentation, flocculating, dewatering and retention aids, as additives for mineral oils, and as ion exchangers. The .alpha.,.beta.-unsaturated N-substituted carboxylic acid amides are prepared by transamidation of .beta.-hydroxy or .beta.-alkoxy carboxylic acid amides with primary amines and heating of the N-substituted .beta.-hydroxy or .beta.-alkoxy carboxylic acid amides obtained as intermediate products in the vapor phase in the presence of catalysts. Primary amines are preferably used in the conversion which have no hydrogen beta to the amino group. These .alpha.,.beta.-unsaturated carboxylic acid amides may be neutralized and/or quaternized and polymerized by processes which as such are known alone or with other comonomers, and preferably acrylic or methacrylic acid derivatives such as acrylamide, to give cationic polymers. These polymers are suited for use as flocculating and sedimentation aids, as dewatering and retention aids in papermaking, as additives for mineral oils, and as ion exchangers.

Polymers of .alpha.,.beta.-unsaturated N-substituted carboxylic acid

The invention relates to a process for the preparation of .alpha., .beta.-unsaturated N-substituted carboxylic acid amides, novel .alpha., .beta.-unsaturated N-substituted carboxylic acid amides, a process for the polymerization of these novel .alpha., .beta.-unsaturated N-substituted carboxylic acid amides, including the polymers, and the use of these polymers as sedimentation, flocculating, dewatering and retention aids, as additives for mineral oils, and as ion exchangers. The .alpha., .beta.-unsaturated N-substituted carboxylic acid amides are prepared by transamidation of .beta.-hydroxy or .beta.-alkoxy carboxylic acid amides with primary amines and heating of the N-substituted .beta.-hydroxy or .beta.-alkoxy carboxylic acid amides obtained as intermediate products in the vapor phase in the presence of catalysts. Primary amines are preferably used in the conversion which have no hydrogen beta to the amino group. These .alpha.,.beta.-unsaturated carboxylic acid amides may be neutralized and/or quaternized and polymerized by processes which as such are known alone or with other comonomers, and preferably acrylic or methacrylic acid derivatives such as acrylamide, to give cationic polymers. These polymers are suited for use as flocculating and sedimentation aids, as dewatering and retention aids in papermaking, as additives for mineral oils, and as ion exchangers.

Process for preparation of .alpha., .beta.-unsaturated

The invention relates to a process for the preparation of N-substituted acrylamides of the general formula ##STR1## wherein Y denotes a bivalent straight - or branched chain radical with 2 to 30, preferably 2 to 18, and particularly 2 to 6 carbon atom-, preferably a group of the formula (Y.sub.1).sub.m -(Y.sub.2).sub.n -(Y.sub.3).sub.t, in which

Method for making N-substituted acrylamides

The invention relates to acrylyl or methacrylyl ureas containing novel quaternary groups of the formula ##STR1## wherein X is hydrogen or a methyl group,

Acrylyl and methacrylyl ureas containing quaternary groups, process for

Process for the manufacture of .alpha.,.beta.-unsaturated N-substituted carboxylic acid amides of the general formula ##STR1## in which R.sup.1 represents H or CH.sub.3

Process for the manufacture of .alpha.,.beta.-unsaturated N-substituted

As a leather fatting agent a solution, emulsion or dispersion of a pulverulent, free-flowing form product derived from a substance having a liquid or pasty consistency, especially fatty, oil and waxy substances, especially those prepared by drying aqueous solutions or dispersions containing these substances together with carrier compositions having the dry weight analysis of from 0.1 to 35% inorganic or organic salts, 0.1 to 90% albumin or albumin derivatives and 0.1 to 70% of mono-, oligo- or poly-saccharides or derivatives thereof; a method of fatting a leather which comprises contacting said leather with a solution, dispersion or emulsion of a free-flowing pulverulent product derived from a substance having a liquid or pasty consistency, especially fatty, oily and waxy substances and especially those substances prepared by drying an aqueous solution or dispersion containing the same, together with a carrier composition having the dry weight analysis set forth above in respect of inorganic or organic salts, albumin or albumin derivatives and mono-, oligo- or poly-saccharides or derivatives thereof.

Dried pulverulent products

A flocculation, sedimentation, dehydration or retention composition comprising a stable dispersion of about 10 to 50% concentration by weight of a polymeric Mannich base in a mixture of water, a water-insoluble liquid and an emulsifier all present as a water-in-oil emulsion, the Mannich base comprising an NH-active polymer carrying carbonamide groups at least about 10% of which carry radicals of a reaction therewith of formaldehyde and a primary or secondary alkyl- or hydroxyalkyl-amine wherein the alkyl groups have up to about 18 carbon atoms, and a stabilizing amount of a water-soluble salt of a mono- or multivalent amine, alone or in admixture with a mono- or multivalent amine or ammonia, or of an ammonium salt of a mineral acid and ammonia, or of a carboxylic acid amide. The amine of the Mannich base is preferably dimethylamine or diethylamine and is used in approximately the same molar amount as the formaldehyde. The polymer preferably comprises acrylamide units and the polymerization may be effected either before or after reaction with the formaldehyde and amine.

Flocculating agent comprising water-in-oil emulsion of stabilizer plus

Urinary and intestinal tract excrement, such as from a stoma patient, is thickened by admixture with a cross-linked water-swellable polymer, preferably including (meth)acrylic acid, nitrile and/or amide units. A hydrophilic adsorption agent such as silicic acid may also be included along with perfume materials, binders and/or enzyme inhibitors. By thickening, it prevents sloshing of the contents, reduces odors and facilitates ultimate disposal.

Thickening urinary and intestinal tract excrement

A flocculation, sedimentation, dehydration or retention composition comprising a dispersion of about 10 to 50% concentration by weight of a polymeric Mannich base in a mixture of water and a water-insoluble liquid, the Mannich base comprising an H-active polymer carrying radicals of a reaction with formaldehyde and a primary or secondary alkyl- or hydroxyalkylamine wherein the alkyl groups have up to about 18 carbon atoms. The amine is preferably dimethylamine or diethylamine and is used in approximately the same molar amount as the formaldehyde. The polymer preferably comprises acrylamide units and the polymerization may be effected either before or after reaction with the formaldehyde and amine.

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Krefeld, Germany

Eduard Barthell