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US 4,432,921 AGranted
Process for producing a binder for wood materials
AssigneeGesellschaft fur Biotechnologische Forschung
InventorsAnnegret Haars, Aloys Huttermann
Life of this patent
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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.
Claims6
A process for producing an active binder for wood products from a phenolic compound having phenolic groups, including lignin sulfonate, comprising:
- treating said phenolic compound with enzymes to activate and oxidatively polymerize said phenolic compound by a radical mechanism to convert said phenolic compound into an active binder for wood products, permitting said active binder to bond wood products at predetermined temperature and predetermined applied pressure.
Dependencies are inferred from the claim text.