PROCESS FOR THE PREPARATION OF LOW MOLECULAR POLYHYDROXY COMPOUNDS

摘要

Low molecular weight polyhydroxyl compounds are made from formaldehyde hydrate by an improved process comprising adjusting the pH of an aqueous solution of formaldehyde and co-catalyst to 9-12 with calcium hydroxide at 80 DEG -110 DEG C. to begin condensation and then adding to this reaction mixture aqueous formalin and/or paraformaldehyde and calcium hydroxide to maintain a pH of 7.5-9.5 and temperature of 80 DEG -110 DEG C.