Thermomechanical digestion process for enhancing the brightness of cellulose pulp using bleachants
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United States of America Patent
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Aug 25, 1987
Issued Date -
N/A
app pub date -
Sep 4, 1985
filing date -
Nov 24, 1980
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Expired
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Abstract
The brightness of a thermomechanical pulp can be improved if a serial multiple blowdown technique is used and a bleachant is present at an effective concentration throughout the thermomechanical pulping process.
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