Basf Se Corporation

Basf Aktiengesellschaft

Dietrich Fehringer

Juergen Detering

Jürgen Detering

Gazi Tuerkoglu

Gazi Türkoglu

Christian Benz

Gunnar Schornick

Helmut B Witteler

Friedrich Linhart

Heike Weber

Thomas Heidenfelder

Rainer Tresch

Frank Klippel

Bernhard Mohr

Walter Bertkau

Claudia Esper

Alexander Göthlich

Bernd Dirks

Compositions including polyaspartic acid and methods for preparing polyaspartic acid using a precondensate of aspartic acid and polyaspartimide are provided herein. Uses for such compositions are also described.

Method for producing polyaspartic acid by means of a precondensate

Provided herein is a method for producing polyaspartic acid under reflux cooling. Further provided herein are compositions including polyaspartic acid obtainable through the method. Also provided herein is a use of polyaspartic acids obtainable through the method in dishwashing agents, detergents, and cleaning agents.

Method for producing polyaspartic acid under reflux cooling

The present invention relates to methods for producing polyaspartic acids with a weight-average molecular weight (Mw) of from 6,000 to 15,000 g/mol. The invention also relates to polyaspartic acids which can be obtained by the method according to the invention, to a composition containing the polyaspartic acids, and to the use thereof as scale inhibitors, dispersants and as an additive in dishwashing agents, detergents or cleaning agents.

Methods for producing polyaspartic acids in the presence of methanesulfonic acid

The present invention relates to the use of modified polyaspartic acids in dishwashing detergents, in particular as dispersants, film inhibitors and spot inhibitors. The invention also relates to dishwashing detergent compositions comprising modified polyaspartic acids.

Use of modified polyaspartic acids in dishwashing detergents

Process for passivating metallic surfaces, and a preparation suitable for implementing the process, comprising at least water, an acid, and a copolymer of functionalized (meth)acrylic esters, monomers containing phosphoric and/or phosphonic acid groups, monomers having COOH groups, and, if appropriate, further monomers. Copolymer which comprises said monomers.

Method of passivating metallic surfaces by means of copolymers having phosphoric acid and/or phosphonic acid groups

Paper, board and cardboard are produced by a process in which a paper stock is drained in the presence of condensates of basic amino acids with sheet formation. In particular, homo- and cocondensates of lysine and the crosslinked condensates obtainable therefrom by reaction with crosslinking agents are used in amounts of from 0.01 to 5% by weight, based on dry paper stock, as a means of increasing the dry and wet strength and the absorptivity of paper, for fixing anionic dyes and interfering substances in the paper, for increasing the drainage rate and the retention as well as the efficiency of synthetic anionic and cationic retention aids in the production of paper, board and cardboard by draining a paper stock with sheet formation.

Method of producing paper, paperboard and cardboard

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Dielheim, Germany

Dietrich Fehringer