Lignin is one of the main components of biomass, but lignin is just burned for the recovery of energy in biomass conversion processes because of the complex structure. To realize bio-refinery economically for constructing a low-carbon society, it is crucial to produce valuable products from lignin in the high yield. In this study, a new treatment method was developed for production of materials of lignin resin. This process consists of the extraction of lignin and hydrothermal depolymerization (300 �C, 20 MPa, 8 min). Depolymerization of lignin successfully brought about the depression of softening points and the higher activities for curing. Thus, it was clarified that phenolic resin could be substituted with lignin resin from any kind of biomass.

Depolymerization of extracted lignin in hot compressed water for production of resin material

244th National Meeting (2012)

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