| abstract |
The invention relates to a process for the preparation of a cured phenolic resin composition and a phenolic resin composition and to the use as a chemical precursor for a phenolic resin, an esterified, mononuclear phenol or phenol ester. A cured phenolic resin may be prepared by reacting (1) an esterified phenolic compound containing one or more phenolic hydroxyl groups and / or one or more esterified phenolic hydroxyl groups and also one or more esterified methylol groups in ortho and / or para position to the (esterified) phenolic hydroxyl group, and (2) a phenolic resole resin in the presence of water and / or another polar solvent. This method can be used in the production of phenolic-based adhesives, phenolic-based casting mold compositions, phenol-based surface coatings, phenol-based foams, and mine disintegrators. Use as a chemical precursor; esterified phenolic compound; phenolic hydroxyl group; esterified methylol group; Ortho position; Para position; polar solvents; Gieszereiformzusammensetzung} |