Process for producing a binder for wood materials

US4432921A · kind A · utility

Assignee

• Gesellschaft fur Biotechnologische Forschung mbH (GBF) · DE

Inventors

• Annegret Haars · Göttingen, DE
• Aloys Hüttermann · Göttingen, DE

Key dates

• Filing date: Oct 7, 1981
• Grant date: Feb 21, 1984
• Expiry date: Oct 7, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12Y110/03002
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

A process in which phenolic substances, particularly lignin sulfonate, are used to produce a binder for wood materials. The phenolic substance is activated by displacing it with enzymes. Phenolic groups of the phenolic substance become oxidatively polymerized by a radical mechanism, so that the phenolic substance is changed into an active binder.