Polish version

Login form



K. Frączek, I. Hetper

The effect of formaldehyde concentration in its water

solution on the chemical composition of toluene-formaldehyde resins

Polimery 1980, No 10, 362

DOI: dx.doi.org/10.14314/polimery.1980.362


The effect of the concentration of formaldehyde in its aqueous solution on the structure of resins prepared by its condensation with toluene in a continuous or semi-continuous process has been investigated. The structure of toluene-formaldehyde resins has been determined by the NMR method. It has been found that in the case of low concentrations of formaldehyde, when it is present in the form of methylene glycol, resins are obtained which do not contain acetal bonds. At higher concentrations, favorable to the oligomerization of glycol, acetal-type compounds prevail in the products of condensation.

If you are interested in full versions of articles, please contact the editorial team of polimery@ichp.pl