| 摘要 |
The present invention provides a method of joining wood products together with an adhesive, comprising the steps of: mixing lignin with a solution consisting essentially of phenol and a compound selected from the class consisting of formaldehyde and a substance yielding formaldehyde at a low temperature such that no substantial reaction takes place so that said phenol and said formaldehyde are absorbed by said lignin, applying said lignin-phenol-formaldehyde mixture to the wood surfaces of said wood products to be joined, and reacting said phenol and said formaldehyde with said lignin by heating so that a hardened lignin adhesive joins said wood products. |
