Chemistry: natural resins or derivatives; peptides or proteins; – Lignins or derivatives – Compound which includes phenolic hydroxy or oxygen...
Reexamination Certificate
2005-01-11
2005-01-11
Nutter, Nathan M. (Department: 1711)
Chemistry: natural resins or derivatives; peptides or proteins;
Lignins or derivatives
Compound which includes phenolic hydroxy or oxygen...
C524S072000
Reexamination Certificate
active
06841660
ABSTRACT:
The present invention provides a process for producing novel lignin derivatives, which comprises using a lignophenol derivative containing a diphenylpropane unit formed by binding a carbon atom at an ortho-position relative to a phenolic hydroxyl group of a phenol derivative to a carbon atom at a benzyl-position of a phenylpropane fundamental unit of lignin, and binding an oxygen atom of the hydroxyl group and a β-positional carbon atom under alkali conditions under which the hydroxyl group can dissociate, to obtain an arylcoumaran derivative containing an arylcoumaran unit in which a coumaran skeleton is bound to an aromatic ring of lignin.
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Funaoka Masamitsu
Kabushiki Kaisha Maruto
Nutter Nathan M.
Perkins Coie LLP
Wise Michael J.
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