Polycocondensates based on aspartic acid, their preparation and their use

US5574113A · kind A · utility

Assignee

• BASF SE

Inventors

• Matthias Kroner · Eisenberg, DE
• Gunnar Schornick · Neuleiningen, DE
• Walter Denzinger · Speyer, DE
• Richard Baur · Mutterstadt, DE
• Alexander Kud · Eppelsheim, DE
• Birgit Potthoff-Karl · Weinheim, DE
• Volker Schwendemann · Neustadt, DE

Key dates

• Filing date: Sep 13, 1995
• Grant date: Nov 12, 1996
• Expiry date: Sep 13, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2800/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polycocondensates based on aspartic acid which are obtainable by condensing aspartic acid in the presence of polymers containing carboxyl groups, which contain at least 10 mol % of a monoethylenically unsaturated carboxylic acid in copolymerized form and have a molecular weight of at least 300, in the weight ratio from 1,000:1 to 2:1, processes for preparing the polycocondensates and use of the polycocondensates in the form of the free acid groups or in a form neutralized with ammonia, amines, alkali metal or alkaline earth metal bases as an additive to detergents and cleaners, as scale inhibitors or as dispersants for finely divided solids are described.