Reduced salt precipitation in carbohydrate containing binder compositions
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United States of America Patent
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Aug 1, 2017
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app pub date -
Jun 28, 2016
filing date -
Apr 16, 2013
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Abstract
Methods of reducing salt precipitation from a binder composition are described. The methods may include the steps of providing an aqueous binder solution having one or more carbohydrates. They may also include adding a sequestrant for one or more multivalent ions to the aqueous binder solution. The sequestrant reduces a precipitation rate for the multivalent ions from the binder composition. The binder composition may include a polymerization catalyst. Exemplary sequestrants may include polycarboxylic acids or anhydrides. Exemplary sequestrant concentrations may range from about 2 wt. % or less of the aqueous binder solution.
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