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US 12,195,662 B2Granted
Phytol-based surfactants and methods therefor
AssigneeAlliance for Sustainable Energy, LLC
InventorsTao Dong, Robert David Allen, Lieve Laurens
Life of this patent
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Abstract
Described herein are compositions and methods for the conversion of chlorophyll-derived phytol into useful and economically viable surfactants. The provided compositions utilize the hydrophobic phytol structure and added functional groups to increase hydrophilicity at one end of the molecule.
Claims12
A surfactant having the formula:
- wherein each of R1, R2 and R3 are each independently —OH or an ester having the formula —OOCR4;
- wherein R4 is an alkylether selected from the range of C1-C10, a hydroxyamine selected from the range of C1-C10, a cyanocarboxylic acid selected from the range of C1-C10, an arylether or O bonded with R1, R2 or R3 to form an ethylene carbonate group or a dimer;
- and
- wherein R1, R2 and R3 are not each —OH, and
- wherein at least one of R1, R2 or R3 has the formula:
- wherein the symbol is a covalent bond connected at R1, R2 or R3 in formula <FX1>.
3 more elements
A method comprising:
- reacting phytantriol with dimethyl carbonate catalyzed by triazabicyclodecene in a carbonate solvent, thereby generating a carbonate surfactant.
A surfactant having the formula:
Dependencies are inferred from the claim text.