Chemische Fabrik Stockhausen Gmbh

Stockhausen Gmbh & Co Kg

Huels Aktiengesellschaft

Rohm and Haas Company

Helmut Klimmek

Frank Krause

Dolf Stockhausen

Helmut Brehm

Helmut Bruggemann

Uwe Gunther

Michael Brock

Peter Hardt

Miroslav Chmelir

Gerd Jonas

Matthias Berghahn

Leonhard Strijbos

Helmut Brehn

Klaus Pfl&uuml;ger

The invention relates to an absorbent insert for foodstuff packagings, the liquid-absorbing component of which is a superabsorbent polymer which, in a hitherto unrivaled fashion, persistently absorbs and retains large quantities of liquid even under high pressure load, protects the foodstuffs from bacterial decay, and prevents contamination of the packaging goods by migrating soluble constituents of the polymer. This combination of properties of the superabsorbers used is expressed by the Q quotient of retention according to the tea bag test&plus;absorption against pressure (AAP) 0.3, divided by the amount of solubles (LA), which quotient is at least 20. Superabsorbers having such properties are obtained by using special combinations of crosslinkers. Furthermore, the invention relates to a process for producing said absorbent inserts and their use in foodstuff packagings, as ice substitute, and as leak-proofing means in transport packagings.

Absorbent inserts, method of producing them and their use

Interpolymers of unsaturated carboxylic acids and unsaturated sulfur acids

The present invention relates to water-soluble, acid-groups-containing graft copolymers which are at least partially biodegradable and are based on sugars and monoethylenically unsaturated carboxylic acids, sulfonic acids and/or phosphonic acids or the salts of said acids as well as optional further monomers. The present invention further relates to a process for producing the graft copolymers at temperatures of up to 200.degree. C. by means of-radical polymerization initiators, in that a total mixture of 5-60%-wt. mono-, di- and oligosaccharides, the derivatives thereof or the mixtures thereof, and 95-40%-wt. of a monomer mixture comprising at least one monoethylenically unsaturated carboxylic acid, at least one monoethylenically unsaturated sulfonic acid, one monoethylenically unsaturated sulfuric acid ester and/or vinylphosphonic acid or the salts of said acids with monovalent cations, as well as optional further monomers is polymerized. The present invention further relates to the use of the graft copolymers in aqueous systems, for binding multivalent metal ions, inhibiting the water hardness, as additive in detergents and cleaning agents, as textile auxiliary, dispersing agent, in particular for pigments, and as auxiliary agent in the production of paper and leather.

Graft copolymers of unsaturated monomers and sugars, a process for the

The present invention relates to water-soluble, acid-groups-containing graft copolymers which are at least partially biodegradable and are based on sugars and monoethylenically unsaturated carboxylic acids, sulfonic acids and/or phosphonic acids or the salts of said acids as well as optional further monomers. The present invention further relates to a process for producing the graft copolymers at temperatures of up to 200.degree. C. by means of radical polymerization initiators, in that a total mixture of 5-60%-wt. mono-, di- and oligosaccharides, the derivatives thereof or the mixtures thereof, and 95-40%-wt. of a monomer mixture comprising at least one monoethylenically unsaturated carboxylic acid, at least one monoethylenically unsaturated sulfonic acid, one monoethylenically unsaturated sulfuric acid ester and/or vinylphosphonic acid or the salts of said acids with monovalent cations, as well as optional further monomers is polymerized. The present invention further relates to the use of the graft copolymers in aqueous systems, for binding multivalent metal ions, inhibiting the water hardness, as additive in detergents and cleaning agents, as textile auxiliary, dispersing agent, in particular for pigments, and as auxiliary agent in the production of paper and leather.

Dispersions of graft copolymers of unsaturated monomers and sugars

Polymer composition, absorbent composition, their production and use

Biodegradable copolymers, methods of producing them and their use

Graft copolymers of unsaturated monomers and polyhydroxy compounds, a

Polymer composition, absorbent material composition, their production

Powder-form polymers which absorb, even under pressure, aqueous liquids

A process for the quaternization of triethanolamine fatty acid esters and imidazolinamides with customary quaternizing agents in a reaction medium containing alkoxylated naturally occurring fats or oils, or mixtures thereof with free fatty acids, monoglycerides and/or diglycerides in the substantial absence of 2-propanol, and the use of the resulting reaction mixtures as the active components in laundry softener compositions.

Process for the quaternization of triethanolamine fatty acid esters and

Growing community of inventors

Krefeld, Germany

Helmut Klimmek