Process for the manufacture of aminoplast and phenoplast moulding compositions using a thin layer evaporator or a roller drier

An improved process for the manufacture of aminoplast or phenoplast compositions by drying an aqueous solution, which optionally contains pigments or mineral fillers, of a phenol-formaldehyde resin, a urea-formaldehyde resin, a melamine-formaldehyde resin or a phenol-modified melamine-formaldehyde resin, grinding the resin composition, optionally mixing it with a filler, pigment, lubricant and, if desired, other additives, and warm-densifying the mixture wherein the improvement comprises

• passing the aqueous resin solution into a thin layer evaporator or roller drier,
• distilling off the water at an elevated temperature, and
• withdrawing the dried material in a fused or solid form.