Title:
PROCESS FOR PRODUCING WATER-SOLUBLE KRAFT LIGNIN
Document Type and Number:
WIPO Patent Application WO/1997/009338
Kind Code:
A1
Abstract:
A process for producing water-soluble kraft lignin by refining and carboxymethylating kraft lignin obtained from wood, whereby it is possible to obtain a water-soluble lignin that has a potent antiviral activity even at a low concentration, is orally administrable, and has a low molecular weight and both anti-AIDS virus and immunopotentiating effects from isolated kraft lignin that is available readily at a low cost in a large quantity.
Inventors:
ISHIDA TAKEHIKO (JP)
ISHIDA ARATA (JP)
IIYAMA KENJI (JP)
LAM THI BACH TUYET (AU)
YAMAMOTO NAOKI (JP)
ISHIDA ARATA (JP)
IIYAMA KENJI (JP)
LAM THI BACH TUYET (AU)
YAMAMOTO NAOKI (JP)
Application Number:
PCT/JP1995/001749
Publication Date:
March 13, 1997
Filing Date:
September 01, 1995
Export Citation:
Assignee:
ISHIDA TAKEHIKO (JP)
ISHIDA ARATA (JP)
IIYAMA KENJI (JP)
LAM THI BACH TUYET (AU)
YAMAMOTO NAOKI (JP)
ISHIDA ARATA (JP)
IIYAMA KENJI (JP)
LAM THI BACH TUYET (AU)
YAMAMOTO NAOKI (JP)
International Classes:
A61K36/00; C07G1/00; (IPC1-7): C07G1/00; A61K35/78
Foreign References:
| JPH05294981A | 1993-11-09 |
Other References:
HOLZFORSCHUNG, Vol. 47, No. 4 (1993), RAJESH K. JAIN et al., "Lignin Derivatives. II. Functional Ethers", pp. 325-332.
TAPPI, J., Vol. 73, No. 6 (1990), ROBERT BRENZNY et al., "Specific Ion-Exchangers Based on Lignins and their Characterization by Silicon-29 NMR Spectroscopy", pp. 199-204.
HOLZFORSCHUNG, Vol. 42, No. 6 (1988), ROBERT BRENZNY et al., "The Ion-Exchanging Lignin Derivatives Prepared by Mannich Reaction with Amino Acids", pp. 369-373.
HOLZFORSCHUNG, Vol. 42, No. 5, (1988), ROBERT BREZNY et al., "Mild Coagulation of Aqueous Suspensions of Kraft Lignin and its Derivatives", pp. 335-336.
WOOD SCI. TECHNOL., Vol. 14, No. 1, (1980), W. LANGE et al., "The Carboxymethylation of Organosolv and Kraft Lignins", pp. 1-7.
TAPPI, J., Vol. 73, No. 6 (1990), ROBERT BRENZNY et al., "Specific Ion-Exchangers Based on Lignins and their Characterization by Silicon-29 NMR Spectroscopy", pp. 199-204.
HOLZFORSCHUNG, Vol. 42, No. 6 (1988), ROBERT BRENZNY et al., "The Ion-Exchanging Lignin Derivatives Prepared by Mannich Reaction with Amino Acids", pp. 369-373.
HOLZFORSCHUNG, Vol. 42, No. 5, (1988), ROBERT BREZNY et al., "Mild Coagulation of Aqueous Suspensions of Kraft Lignin and its Derivatives", pp. 335-336.
WOOD SCI. TECHNOL., Vol. 14, No. 1, (1980), W. LANGE et al., "The Carboxymethylation of Organosolv and Kraft Lignins", pp. 1-7.
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