Lignin Derivatives
AssigneePureVision Technology, Inc.
InventorsDhrubojyoti Dey Laskar, John Allen Yegge, Andrew Stephen Boswell, Sara Jordan Chmelka, Leslie W. Joy, Ryan Carl Allen Tarrant, David Cole DeCoster, Richard C. Wingerson, Edwin R. Lehrburger
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Abstract
The present invention provides lignin derivatives having a certain physical and/or chemical properties. In particular, the lignin derivatives of the invention have particular NMR spectral characteristics, impurity content, average molecular weight, and/or other characteristics.
Claims17
A lignin derivative recovered from a biorefinery process of a lignocellulosic biomass, wherein said lignin derivative has no ethoxy substituent in the 2D HSQC NMR spectra, and ash content of about 1.5% or less.
A lignin derivative having 1H NMR peaks at:
- δH ˜4.0 ppm to 5.5 ppm, δH ˜6.4 ppm to 6.6 ppm, δH ˜6.8 ppm to 7.2 ppm, δH ˜7.3 ppm to 7.5 ppm, and δH ˜9.0 ppm to 10.0 ppm.
A lignin derivative comprising inverse gated 13C NMR peak at δc ˜55.8 ppm.
Dependencies are inferred from the claim text.