SULFONATION OF PULP PRODUCED BY ALKALI PULPING PROCESS
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United States of America Patent
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app pub date -
Mar 13, 2015
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Apr 24, 2009
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Abstract
This invention relates to the delignification of lignocellulosic pulp. More particularly, the invention relates to sulfonation and bleaching of the alkali pulping produced by Kraft pulp processes or produced through combination of alkali pulping processes and extended delignification stages.
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