Patent · US Expired

INTERMEDIATE PRODUCT FOR MANUFACTURING LIGAIN POLYMERS AND IT'S USE IN MANUFACTURING REAGENTS FOR MAKING COMPOSITE MATERIALS FROM PLANT FIBERS, WATERPROOF PAPERS AND CARDBOARDS, AND THERMOSETTING PLASTICS FROM DERIVATIVES

US6410674B2 · kind B2 · utility

5Cited by

1References

10Claims

0Family size

Assignee

Stockhausen GmbH & Co. KG · DE

Inventors

Aloys Hüttermann · Göttingen, DE
Andrzej Majcherczyk · Bocholt, DE
Carsten Mai · Oebisfelde, DE
Annette Braun-Lüllemann · Bovenden, DE
Merle Fastenrath · Göttingen, DE
Sonja Noetzold · Göttingen, DE

Key dates

Filing date	Feb 4, 2000
Grant date	Jun 25, 2002
Priority date	—
Expiry date	Feb 4, 2020

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to an intermediate product for manufacturing polymers of lignin derivatives from the pulp industry, made by treating the lignin derivatives with phenol oxidizing enzymes in the presence of oxidation agents, characterized in that the lignin derivatives are (a) subjected to enzyme treatment for more than 3 hours in the presence of air, or (b) subjected to enzyme treatment for more than 10 minutes while air or oxygen is being passed through them, or (c) oxidized by treatment with chemical oxidation agents. The intermediate product is used in manufacturing polymers of lignin derivatives from the pulp industry, fiber-reinforced thermosetting composite materials from plant fibers, waterproof papers and cardboards, and thermosetting plastics from lignin derivatives.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.