Nitric acid oxidized lignosulfonates
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United States of America Patent
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Aug 29, 1995
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N/A
app pub date -
Mar 2, 1994
filing date -
Sep 6, 1990
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Expired
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Abstract
A process for producing an oxidized lignosulfonate composition comprising admixing a lignosulfonate and nitric acid such that the amount of acid comprises from about 35% to about 100% by weight of dry solids of the lignosulfonate, and reacting said mixture for a time sufficient to form the oxidized lignosulfonate composition.
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