Title:
NOVEL LIGNIN DERIVATIVE, MOLDINGS PRODUCED BY USING THE DERIVATIVE, AND PROCESS FOR THE PREPARATION THEREOF
Document Type and Number:
WIPO Patent Application WO/1999/014223
Kind Code:
A1
Abstract:
A process for the preparation of a novel lignin derivative, characterized by subjecting a lignophenol derivative having diphenylpropane units prepared by bonding the carbon atom of a phenol derivative ortho to the phenolic hydroxyl group to the benzylic carbon atoms of the phenylpropane basic units of lignin to treatment with an alkali capable of dissociating the above hydroxyl group to thereby bond the oxygen atom of the hydroxyl group to the $g(b)-position carbon atom, thus forming an arylcoumaran derivative having arylcoumaran units constituted of the aromatic nuclei of lignin and coumaran skeletons bonded thereto.
Inventors:
FUNAOKA MASAMITSU (JP)
Application Number:
PCT/JP1997/003240
Publication Date:
March 25, 1999
Filing Date:
September 12, 1997
Export Citation:
Assignee:
MARUTO KK (JP)
FUNAOKA MASAMITSU (JP)
FUNAOKA MASAMITSU (JP)
International Classes:
C07G1/00; C08H7/00; (IPC1-7): C07G1/00; C08J5/04; C08J7/02
Foreign References:
| JPH02233701A | 1990-09-17 | |||
| JPS6416840A | 1989-01-20 |
Other References:
RICHARD M. EDE et al., "Formic Acid/Peroxyformic Acid Pulping", HOLZFORSCHUNG, (1989), Vol. 43, No. 12, p. 127-129.
SEIICHI YASUDA et al., "Chemical Structures of Sulfuric Acid Lignin", HOLZFORSCHUNG, (1987), Vol. 41, No. 1, p. 59-65.
GOSTA BRUNOW, "On the Acid-Catalyzed Alkylation of Lignins", HOLZFORSCHUNG, Vol. 45, No. 1, p. 37-40.
JOSEF GIERER et al., "Studies on the Condensation of Lignins in Alkaline Media Part 11", CAN. J. CHEM., (1977), Vol. 55, No. 4, p. 593-599.
See also references of EP 1022283A4
SEIICHI YASUDA et al., "Chemical Structures of Sulfuric Acid Lignin", HOLZFORSCHUNG, (1987), Vol. 41, No. 1, p. 59-65.
GOSTA BRUNOW, "On the Acid-Catalyzed Alkylation of Lignins", HOLZFORSCHUNG, Vol. 45, No. 1, p. 37-40.
JOSEF GIERER et al., "Studies on the Condensation of Lignins in Alkaline Media Part 11", CAN. J. CHEM., (1977), Vol. 55, No. 4, p. 593-599.
See also references of EP 1022283A4
Attorney, Agent or Firm:
Kodama, Hideo (10-19 Sakae 2-chome, Naka-k, Nagoya-shi Aichi 460, JP)
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