Title: Intermediate for production of lignin polymers and their use in production of reagents for production of composite materials from plant fibers, water proof papers and cardboards
Application Number: 98801827 Application Date: 1998.01.14
Publication Number: 1243524 Publication Date: 2000.02.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C08H5/02
Applicant(s) Name: Stockhauson GmbH Address:
Inventor(s) Name: Aloys Heyotmann;Andrzej Majcherczyk;Carsten Mai
Attorney & Agent: ding yebeng
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.
Time: 8