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US 2026/0286066 A1Published application
Conversion of lignin into bio-phenols, lignin-based epoxides, and bio-based epoxy resin
AssigneeSpero Renewables, LLC
InventorsBaoyuan LIU, Ian M. KLEIN, Shou ZHAO
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Abstract
A method for depolymerizing lignin includes contacting lignin with a catalyst, and based on the contacting, catalytically depolymerizing at least a portion of the lignin into low molecular weight fragments. The low molecular weight fragments have Mn of less than or equal to 350 Da, and the low molecular weight fragments comprise unbound phenolic hydroxyl groups.
Claims24
A method comprising:
- contacting lignin with a catalyst;
- and
- based on the contacting, catalytically depolymerizing at least a portion of the lignin into low molecular weight fragments, wherein the low molecular weight fragments have Mn≤350 Da, and wherein the low molecular weight fragments comprise unbound phenolic hydroxyl groups.
-5. (canceled)
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A method comprising:
- contacting technical lignin with one or more organic solvents;
- and
- fractioning the technical lignin based on the contacting to form lignin fractions;
- and
- epoxidizing one or more of the lignin fractions for resin synthesis to form lignin epoxide.
2 more elements
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Dependencies are inferred from the claim text.