Patent ID: 9035014
Filing Date: 2015-05-19
Classification: C08G,C08L

Abstract:
1. A process for preparing a condensation resin, the process comprising: reacting at least one urea of formula (I), formula (II), or both: with at least one 3-hydroxypropionaldehyde derivative of formula (IIa) thereby obtaining the condensation resin, wherein: R A is a C X is oxygen or sulfur, R R a molar ratio of the at least one urea and the at least one 3-hydroxypropionaldehyde derivative is from 1:2 to 1:12, and the at least one 3-hydroxypropionaldehyde derivative comprises, in the form of an aqueous solution with a strength of 30 to 90%, formaldehyde in a bound or an unbound form in an amount of not more than 5% by weight.