Pulp Bleaching and Alkaline Extraction Method
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United States of America Patent
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Issued Date -
Feb 9, 2012
app pub date -
Apr 27, 2011
filing date -
Apr 28, 2010
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Abandoned
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Abstract
A method of treating lignocellulosic pulp in which an aqueous pulp mixture is treated with a bleaching agent and then subjected to an alkaline extraction at a reduced pH with a combination of alkaline agents comprising caustic soda and soda ash and using caustic soda for pH control.
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