Use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions
AssigneeDegussa Construction Chemicals GmbH
InventorsLars Einfeldt, Gerhard Albrecht, Alfred Kern, Matilde Calado Vieira, Dieter Klemm
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Abstract
The invention concerns the use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions. A partially hydrolyzed cellulose containing carboxyl groups and optionally hydroxyalkyl and/or sulfate groups and/or a partially hydrolyzed amylose-rich starch which also has sulfoalkyl groups with 1 to 4 carbon atoms is used as the polysaccharide derivative. These polysaccharide derivatives have a low viscosity and an excellent plasticizing effect in mineral binder suspensions, especially in those based on cement, lime and/or gypsum.
Claims14
Use of water-soluble polysaccharide derivatives as dispersing agents for mineral binding agent suspensions,
- characterized in that
- a partially hydrolyzed cellulose containing carboxyl groups which optionally also contains hydroxyalkyl and/or sulfate groups, and/or a partially hydrolyzed amylose-rich starch is used which also has sulfoalkyl groups containing 1 to 4 C atoms.
Dependencies are inferred from the claim text.