×

Compositions comprising lignin

  • US 9,963,555 B2
  • Filed: 12/21/2015
  • Issued: 05/08/2018
  • Est. Priority Date: 12/30/2011
  • Status: Active Grant
First Claim
Patent Images

1. A phenolic resin:

  • wherein at least a portion of said phenolic resin is produced by a reaction with a phenol substitute;

    wherein said phenol substitute comprises;

    lignin; and

    wherein said phenol substitute is a composition produced by a two stage process, said two stage process comprising;

    a first stage comprising;

    providing a mixture comprising lignocellulosic biomass and water; and

    heating said mixture to a first temperature of about 130°

    C. to about 250°

    C. and maintaining said first temperature for a period of about 0.5 min to about 5 hours, thereby producing a first solids fraction and a first liquid fraction; and

    a second stage comprising;

    subjecting said first solids fraction obtained from said first stage to a supercritical or near-critical fluid under a pressure of about 40 bar to about 300 bar;

    wherein said supercritical or near-critical fluid comprises water;

    wherein said supercritical or near-critical fluid is at a temperature of about 374°

    C. to about 600°

    C.;

    wherein said subjecting step elevates said first solids fraction to a second temperature of about 250°

    C. to about 450°

    C.;

    wherein said first solids fraction is maintained at said second temperature for a period of about 0.05 sec to about 10 sec, thereby producing a second solids fraction and a second liquid fraction; and

    wherein said composition comprises said second solids fraction.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×