Polyphenolic derivative chelating agent

Details Polyphenolic derivative chelating agent Polyphenolic derivative chelating agent

1996-04-12

1999-03-09

Gerstl, Robert

Chemistry: natural resins or derivatives; peptides or proteins;

Lignins or derivatives

C07G 100

Patent

active

058802711

ABSTRACT:
A polyphenolic-derivative chelating agent derived from lignin, lignin-derived, or lignin-containing materials. The chelating agent is derived by treating the starting material at acidic conditions, followed by oxidative degradation of the acid-treated starting material. The chelating agent has a functional group composition including about 24-29% COOH, about 2.0-3.0% OH(phenolic), and about 17-19% NO.sub.2, by weight, and an average molecular weight of at least about 400.

REFERENCES:
patent: 5446133 (1995-08-01), Detroit

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