Formaldehyde → Formaldehyde;phenol

Participants

Reaction Steps

adding a second portion of phenol and formaldehyde in a phenol to formaldehyde mol ratio of 1.5:1 to 3:1 and alkaline catalyst to the resin and cooking at 45°-70° C. until the formaldehyde is reacted to a free formaldehyde content of 0-4% to produce a non-resinous phenol-formaldehyde condensate comprising methylated phenols having an average molecular weight of about 200-300; and

Provenance & Evidence