METHOD FOR PREPARING POLYURETHANE FOAM USING EXTRACT OF COTTON SPINNING BLACK LIQUOR
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Dec 21, 2023
filing date -
Dec 21, 2023
priority date (Note) -
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Abstract
The present disclosure discloses a method for preparing a polyurethane foam using an extract of cotton spinning black liquor, including the following steps: step (1): extracting biomass in cotton spinning black liquor by acid precipitation to obtain the extract of cotton spinning black liquor; step (2): pretreating the extract of cotton spinning black liquor, and uniformly mixing the pretreated extract of cotton spinning black liquor with a polyether polyol to obtain a mixed raw material; and step (3): preparing the polyurethane foam from the mixed raw material, dibutyltin dilaurate, distilled water, a foam stabilizer, aluminum hypophosphite and an isocyanate by one-step foaming. The present disclosure can solve the problems of high treatment cost and low utilization rate of the existing cotton spinning black liquor.
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