Method for the production of a phenolic substance from wood

Details Method for the production of a phenolic substance from wood Method for the production of a phenolic substance from wood

2006-12-26

2006-12-26

McKenzie, Thomas (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S323000

Reexamination Certificate

active

07153982

ABSTRACT:
A method for the production of hydroxymatairesinol or a hydroxymatairesinol complex from wood, including the steps of a) extracting finely divided wood material with a polar solvent, b) optionally concentrating the extract by separating at least part of the solvent, c) adding to the extract an agent able to form a complex with hydroxymatairesinol, d) precipitating the hydroxymatairesinol complex, and optionally e) releasing the hydroxymatairesinol from the complex.

REFERENCES:
patent: 5229419 (1993-07-01), McLaughlin et al.
patent: 2 063 856 (1981-06-01), None
patent: WO 00/59946 (2000-10-01), None
Freudenberg et al., “Die Lignane Des Fichtenholzes”0- Chem. Ber. 2857-69 (1957).
Ekman, “Analysis of Lignans in Norway Spruce by Combined Gas Chromatography—Mass Spectrometry”, 30Holzforschung79-85 (1976).
★Modonova et al., “Lignan Compounds of Siberian Sprice Wood (Picea Obovata),” Khim. Ispol'z. Lignina 73-86 (1974) abstracted in STN International, File CAPLUS, Accession No. 1975:141811 (Abstract Only).
★Kuridze et al., “Spectrophotometric Determination of Lignans in Oakwood and Brandy,” 7 Izvestiya Akademii Nauk Gruzinsko: SSR, Serija Khimicheskaya 213-23 abstracted in STN International, File CAPLUS, Accession No. 1982:102372 (Abstract Only).

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