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Polyaspartates and Polysuccinimide

  1. Thomas Klein,
  2. Ralf-Johann Moritz,
  3. René Graupner

Published Online: 15 JAN 2008

DOI: 10.1002/14356007.l21_l01

Ullmann's Encyclopedia of Industrial Chemistry

Ullmann's Encyclopedia of Industrial Chemistry

How to Cite

Klein, T., Moritz, R.-J. and Graupner, R. 2008. Polyaspartates and Polysuccinimide. Ullmann's Encyclopedia of Industrial Chemistry. .

Author Information

  1. Lanxess Deutschland GmbH, Leverkusen, Germany

Publication History

  1. Published Online: 15 JAN 2008

Chemistry Terms

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The article contains sections titled:

2.Synthesis and Production of Polyaspartates
3.Analytical Characterization and Detection
3.1.inline image NMR Spectroscopy
3.2.inline image NMR Spectroscopy
3.3.Gel Permeation Chromatography
3.5.Fluorescence Spectroscopy
3.6.Precipitation Titration
3.7.Polyelectrolyte Titration
4.Toxicological Properties and Environmental Fate
5.Function and Applications
5.1.1.Dispersing Effect
5.1.2.Threshold Effect
5.1.3.Crystal Distortion
5.1.4.Complexing Effect
5.1.5.Corrosion Inhibition
5.2.Applications and Uses of Polyaspartates
5.2.1.Water Treatment
5.2.2.Detergents and Cleaners
5.2.3.Mining and Oil Recovery
5.2.4.Other Uses
6.2.Chemical Properties and Analytic Characterization
6.3.Applications and Uses of Polysuccinimide

Polyaspartates are biodegrable polyanions which can substitute the currently used polycarboxylates or polyacrylates as inhibitors of mineral formation and scaling, widely occurring problems in various industrial processes. Polyaspartates can be used in many applications such as detergents and cleaners, water treatment agents, or as agents in mining and oil recovery. Production in commercial scale is possible by polycondensation of enzymatically produced l-aspartic acid. However, complete substitution of polycarboxylates, which are mainly non-biodegradable, would only be possible by using chemical precursors of aspartic acid. Polyaspartates have excellent toxicological properties.