Phenolic compound-modified spent sulfite liquor and process for preparing same
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United States of America Patent
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-
Jan 12, 1988
Grant Date -
N/A
app pub date -
Sep 16, 1985
filing date -
May 9, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for modifying spent sulfite liquor by reacting the liquor with a phenolic compound in the presence of an oxidizing agent is disclosed. The phenolic compound-modified spent sulfite contains 4%-25% reacted phenolic compound based on the dry weight of the original spent sulfite liquor. The modified liquor also contains a reduction in the sugars content and sulfonic acid groups of at least 20% each over the original liquor. The modified spent sulfite liquor is suitable for use in thermosetting resin formulations.
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