| abstract |
There is provided a process for the continuous production of an aqueous hydroxy-aryl formaldehyde resin solution. The process comprises the steps of: a. reparing a reaction mixture of a hydroxy-aryl compound and an aqueous formaldehyde, b. adding a catalyst, c. reacting the reaction mixture in the presence of the catalyst, d. an optional step of adding an amount of amino compound after reaction, e. an optional step of removing water to reach a higher solid content. In step c the reaction takes place in a continuous plug flow of the reaction mixture. |