Fibrous structures exhibiting improved whiteness index values
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United States of America Patent
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Feb 28, 2023
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app pub date -
Aug 17, 2021
filing date -
Apr 12, 2013
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Abstract
Fibrous structures, for example sanitary tissue products, containing a plurality of filaments that employ one or more filament-forming materials, such as one or more hydroxyl polymers, and one or more hueing agents, present within the filaments such that the fibrous structures exhibit a Whiteness Index of greater than 72 as measured according to the Whiteness Index Test Method described herein.
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