DISPERSANT CONTAINING GYPSUM SLURRY
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United States of America Patent
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Issued Date -
Dec 12, 2013
app pub date -
Oct 7, 2011
filing date -
Oct 11, 2010
priority date (Note) -
Abandoned
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Abstract
The subject of the present invention is a gypsum containing aqueous slurry containing a phosphate based polycondensate as sole agent with dispersing properties. With a phosphated polycondensate according to the invention as sole dispersing component an improved efficiency was found in comparison with the polycondensates known in the prior art. As additional favorable effect a significantly decreased retardation of the setting and hardening of the various construction compositions and especially of gypsum based slurries compared to other dispersants is to be observed, independently from the dosage of the dispersing component. This effect of the polycondensate component as well as an expedient influence on the pore structure surprisingly can be observed.
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