Redispersible polymer powders, method for their preparation and applications
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United States of America Patent
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Apr 20, 1999
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N/A
app pub date -
Sep 21, 1995
filing date -
Sep 23, 1994
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Expired
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Abstract
The invention concerns redispersible polymer powders characterized by a proportion of 3 to 30% by wt relative to the polymer weight of condensation products of amino-s-triazine/formaldehyde/sulfite with molar ratios of amino-s-triazine to formaldehyde to sulfite of 1/1.3-6.0/0.3-1.5 and with a low free formaldehyde content. These condensation products of amino-s-triazine/formaldehyde/sulfite are exceedingly effective protective colloids when spray-drying polymer dispersions and can be combined in problem-free manner with casein.
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