Assertion: urea | /r/HasProperty | introduced
Facets:
Source sentences:
text: A process for the preparation of watersoluble methylol urea ifrom normally solid 75 to 90 formaldehyde which comprises introducing urea at a temperature between 75 and 90 C. into 75 to 90% formaldehyde, the formaldehyde being in the liquid phase because of the temperature used, the urea being introduced after adjusting the pH of the fluid formaldehyde to a value between 7.2 and 8.5. controlling the resulting exothermic reaction at a temperature below 70 C. and recovering therefrom solid, water-soluble methylol urea.