Polymerized alkaline lignin materials

Details Polymerized alkaline lignin materials Polymerized alkaline lignin materials

1998-01-21

1999-07-20

Nutter, Nathan M.

Chemistry: natural resins or derivatives; peptides or proteins;

Lignins or derivatives

530501, C07G 100, C08L 9700

Patent

active

059257431

ABSTRACT:
A method for preparing a polymerized alkali lignin material which comprises reacting an alkaline solution of alkali lignin obtained from an alkaline pulping process at a temperature between about 20.degree. C. to 90.degree. C. with between 5% to 80% by weight based on said alkali lignin of sodium persulfate at a pH of between about 7 to 12 for a sufficient time to form a polymerized alkali lignin. Optionally, the alkaline solution of alkali lignin may be oxidized for a period time sufficient to activate the alkali lignin prior to reacting the solution with sodium persulfate.

REFERENCES:
patent: 4773966 (1988-09-01), Huynh

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