TH41676A - The process for preparing resol - Google Patents

Abstract

DC60 This invention relates to a process for preparing resol by reactivity. Phenolic compounds with aldehyde by It is accelerated by metal salts with cations that can be easily precipitated into salts capable of Low solubility in chemical processes In this process industry, dispersants are added to the reactive mixtures consisting of phenolic aldehyde and preceding metal salts, during or after the condensation reaction, and the agitators are mixed. for As a complex after the reaction This condensation has finished. Complete And after mixing this dispersant, the resulting resin is transparent even after neutralization using sulfuric acid. This invention relates to the process for preparing the resol by the reaction. Phenolic compounds with aldehyde by The reaction is accelerated by metal salts, which contain cations that can be easily precipitated into salts capable of Low solubility in industrial processes In this process, dispersants are added to the reactive mixtures, which With phenolic aldehyde and metal salts before, during or after the reaction of condensation, and will As a complex substance after the reaction This condensation has completed Completely ended And after mixing the dispersant, the resulting resin becomes transparent, even after neutralization using sulfuric acid.

Claims (10)

1. The process for preparing resin involves reacting phenolic compounds with aldehydes, catalyzed by easily precipitated metal salts, to form low-solubility salts in an industrial process. A characteristic feature is that a dispersant is added to the reaction mixture containing the phenolic compounds, aldehydes, and metal salts before, during, or after the condensation reaction, and a complexing agent is mixed in after the condensation is complete and the dispersant has been mixed. 2. The process under claim 1 is characterized by the fact that the metal salt is calcium hydroxide or magnesium hydroxide. 3. The process under claim 1 is characterized by the fact that the dispersant is added to the reaction mixture prior to the condensation reaction. 4. A process under either claim 1 or 2, characterized by the dispersant being added to the reaction mixture after the condensation reaction has occurred, and characterized by the reaction mixture being neutralized prior to the addition of the dispersant and complexing agent. 5. A process under either claim 1 or 2, characterized by the dispersant being added to the reaction mixture after the condensation reaction has occurred, and characterized by the neutralization of the reaction mixture after the addition of the dispersant and complexing agent. 6. Any of the processes described in claims 1 through 5, with the specific characteristic that the amount of this dispersant is between 0.05 and 5%, based on the phenolic compound used. 7. The use of resin prepared under any one of these claims (1 through 6) for the manufacture of sound and thermal insulation materials. 8. The use of resin prepared under any one of these claims (1 through 6) for the manufacture of wood materials. 9. The use of resin prepared under any one of these claims (1 through 6) for the production of foam. 10. The use of resin prepared under any one of these claims (1 through 6) for the manufacture of laminates.