SYNTHESIS OF A POLYURETHANE FOAM INCORPORATING INDUSTRIAL BYPRODUCTS OR WASTE
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United States of America Patent
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Issued Date -
Nov 24, 2022
app pub date -
May 4, 2021
filing date -
May 4, 2021
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Abstract
A process includes calcining a high potassium carbonaceous waste product to form potassium oxide and carbon dioxide and reacting the potassium oxide and carbon dioxide to yield bio-based potassium carbonate. The process also includes catalyzing a reaction of a lignocellulosic biomass with abundant hydroxyl groups into a biopolyol using the bio-based potassium carbonate and brominating using a brominating agent a triglyceride to form a bio-isocyanate. In addition, the process includes reacting the biopolyol and the bio-isocyanate to form a polyurethane foam.
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