STABLE LIQUID SUSPENSIONS AND METHOD FOR ANALYZING SAME

Stable, pourable aqueous suspensions of solid particulate materials are provided, especially suspensions of sulfur dyes which are characterized a very low content of inorganic sulfides an inorganic polysulfides. The suspensions are produced using certain suspension stabilizing agents particularly po...

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Hauptverfasser: JON W. MERKERT, DWAYNE R. MYERS, CATHERINE S. HO, LIVIUS T. PERCY, GUIDO J. DANHIEUX, MAY N. SZETO, YI LAI WANG, MASATO NISHIOKA, MICHEL M. TRAWALTER
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creator JON W. MERKERT
DWAYNE R. MYERS
CATHERINE S. HO
LIVIUS T. PERCY
GUIDO J. DANHIEUX
MAY N. SZETO
YI LAI WANG
MASATO NISHIOKA
MICHEL M. TRAWALTER
description Stable, pourable aqueous suspensions of solid particulate materials are provided, especially suspensions of sulfur dyes which are characterized a very low content of inorganic sulfides an inorganic polysulfides. The suspensions are produced using certain suspension stabilizing agents particularly polysaccharides, such as xanthan gum, whose solutions in water are psekudoplastic. An improved method is also provided for determining the potential for such suspensions to release hydrogen sulfide upon being acidified at a given temperature, which method comprises acidifying a sample of the suspension to pH 2.9-3.7, capturing all of the hydrogen sulfide release during acidification in aqueous alkali and measuring the sulfide ion content of the aqueous alkali. Se proporcionan suspensiones acuosas que se pueden verter, estables, de tintes de azufre, especialmente suspensiones las cuales están caracterizadas por un contenido muy bajo de sulfuros inorgánicos y polisulfuros inorgánicos. Las suspensiones se producen utilizando ciertos agentes estabilizantes de suspension que consisten principalmente de gomas de polisacáridos solubles en agua, tales como goma de xantano, cuyas soluciones en agua son pseudoplásticas. Las suspensiones pueden comprender de manera adicional un agente reductor diferente de sulfuro y/o un agente dispersante. También se proporciona un método mejorado para determinar el potencial de tales suspensiones para liberar sulfuro de hidrogeno al acidificarse a una temperatura dada, método el cual comprende acidificar una muestra de la suspension hasta pH 2.9-3.7, capturar o atrapar la totalidad del sulfuro de hidrogeno liberado durante la acidificacion en una mezcla alcalina acuosa y medir el contenido de ion sulfuro de la suspension alcalina acuosa.
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An improved method is also provided for determining the potential for such suspensions to release hydrogen sulfide upon being acidified at a given temperature, which method comprises acidifying a sample of the suspension to pH 2.9-3.7, capturing all of the hydrogen sulfide release during acidification in aqueous alkali and measuring the sulfide ion content of the aqueous alkali. Se proporcionan suspensiones acuosas que se pueden verter, estables, de tintes de azufre, especialmente suspensiones las cuales están caracterizadas por un contenido muy bajo de sulfuros inorgánicos y polisulfuros inorgánicos. Las suspensiones se producen utilizando ciertos agentes estabilizantes de suspension que consisten principalmente de gomas de polisacáridos solubles en agua, tales como goma de xantano, cuyas soluciones en agua son pseudoplásticas. Las suspensiones pueden comprender de manera adicional un agente reductor diferente de sulfuro y/o un agente dispersante. 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The suspensions are produced using certain suspension stabilizing agents particularly polysaccharides, such as xanthan gum, whose solutions in water are psekudoplastic. An improved method is also provided for determining the potential for such suspensions to release hydrogen sulfide upon being acidified at a given temperature, which method comprises acidifying a sample of the suspension to pH 2.9-3.7, capturing all of the hydrogen sulfide release during acidification in aqueous alkali and measuring the sulfide ion content of the aqueous alkali. Se proporcionan suspensiones acuosas que se pueden verter, estables, de tintes de azufre, especialmente suspensiones las cuales están caracterizadas por un contenido muy bajo de sulfuros inorgánicos y polisulfuros inorgánicos. 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subjects ADHESIVES
CHEMISTRY
DYES
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
title STABLE LIQUID SUSPENSIONS AND METHOD FOR ANALYZING SAME
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