Highly concentrated formaldehyde solution, its preparation and reaction.

摘要

aqueous formaldehyde solution containing formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x = 65% by weight, wherein the average molecular weight of polyoxymethylene depending on the formaldehyde concentration is equal to or less than the values obtained according to formula I: (see formula) therein mean: mean molar mass x total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in% by weight (total formaldehyde concentration).