HIGHLY CONCENTRATED FORMALDEHYDE SOLUTION, PRODUCTION AND REACTION THEREOF

摘要

The invention relates to an aqueous formaldehyde solution, containing formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x >/= 65 wt. %. Said solution is characterized in that the average molar mass M of the polyoxymethylene glycols is equal or inferior to the values, which are obtained according to formula I, depending on the formaldehyde concentration, whereby M represents the average molar mass and x the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in wt. % (formaldehyde total concentration).