Method for separating and recovering lignin derivatives

Details Method for separating and recovering lignin derivatives Method for separating and recovering lignin derivatives

2011-04-12

2011-04-12

Eashoo, Mark (Department: 1767)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C530S500000, C530S502000

Reexamination Certificate

active

07922912

ABSTRACT:
An object of the present invention is to provide a technique for separation/collection of a lignin derivative which is useful for the separation of a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-diphenylpropane unit from a mixture system containing the lignin derivative. In the Present invention, a lignin derivative having a 1,1-diphenylpropane unit and/or a unit derived from the 1,1-dipheylpropane unit is allowed to contact with a metal oxide in a liquid medium, thereby separating the lignin derivative in the form retained on the metal oxide.

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English-language translation ofChinese Office Action in Chinese Patent Application No. 200680020306.7, mailed May 12, 2010.

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