Patent ID: 9000121
Filing Date: 2015-04-07
Classification: C08G,C08L

Abstract:
1. A process for preparing a condensation resin, the process comprising: reacting (a) at least one selected from the group consisting of a urea of formula (I) and a urea of formula (II): wherein R (b) formaldehyde, and (c) at least one CH-acidic aldehyde of formula (III): wherein R wherein a molar ratio of the urea to the formaldehyde to the CH-acidic aldehyde is from 1:2 to 15:2 to 15, wherein the reacting is carried out at a temperature in a range between 60 and 150° C., in the presence of an acid or a base, at least partly in the presence of at least one compound (IV) selected from the group consisting of a diol, a diamine, an aminoalcohol, and a mercaptoalcohol, the compound (IV) comprising two nucleophilic groups selected from the group consisting of a hydroxyl group (—OH), a primary amino group (—NH wherein the condensation resin has a glass transition temperature, T