Title:
METHOD OF DISSOLVING LIGNOCELLULOSIC MATERIALS
Document Type and Number:
WIPO Patent Application WO/2014/060651
Kind Code:
A8
Abstract:
A solution containing lignocellulose material solvated in an ionic liquid that comprises anions and cations. The cation is selected from substituted phosphonium ions having Formula (II), +P[R1 R2 R3 R4], wherein +P stands for a phosphonium ion and each R1, R2, R3, and R4 is independently selected from optionally substituted, linear or branched hydrocarbyl radicals which form a hydrophobic residue. The anions are derived from a Bronsted acid or mixture thereof. The present ionic liquids are capable of phase separation on mixing with water, which allows for separation of the cellulose from the solution and for recovery and recycling of the ionic liquid.
Inventors:
KING ALISTAIR W T (FI)
HOLDING ASHLEY (FI)
KILPELÄINEN ILKKA (FI)
HOLDING ASHLEY (FI)
KILPELÄINEN ILKKA (FI)
Application Number:
PCT/FI2013/050991
Publication Date:
October 30, 2014
Filing Date:
October 17, 2013
Export Citation:
Assignee:
METSÄ FIBRE OY (FI)
International Classes:
D21C3/20; D21C11/00
Attorney, Agent or Firm:
SEPPO LAINE OY (Helsinki, FI)
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