Step-growth polymerization of unsaturated aldehydes with diaminodiphenylmethane

Autor: Anton Šebenik
Rok vydání: 1998
Předmět:
Zdroj: Journal of Coatings Technology. 70:95-100
ISSN: 0361-8773
DOI: 10.1007/bf02720502
Popis: Step-growth polymerization of diaminodiphenylmethane and unsaturated aldehydes (crotonaldehyde, cinnamaldehyde) proceeded easily in toluene at reflux temperature. Resins with molecular weights up to 1,500 g/mol were formed. In the first step of the reaction, the amino and the aldehyde groups reaction were predominate while the double bonds dominated to a lesser extent. The portion of unreacted monomers was under one percent. The resins consisted of oligomers with -CHNH-, -CH=N-, and -CH=CH-groups, which further reacted to form highly crosslinked resins. Kinetic data, the heat of the addition, the heat of condensation, and the activation energy were calculated.
Databáze: OpenAIRE