Addition d'une double liaison sur les polycondensats uree formol. Etude cinetique de la formation de l'acrylamido methylene uree
The addition of acrylamido methylene urea during synthesis of urea formaldehyde resins leads to double bonded polycondensates.The condensation reaction involving urea and N-methylol acrylamide follows the pathway of specific acid catalysis.Usual synthesis conditions of urea formaldehyde resins do not allow the formation of a double bond.Indeed, the determination of rate constants shows that the formation rate of methylene linkage between urea and N-methylolacrylamide is slower than the formation rate of methylene linkage between urea and N-methylolurea.
Lalo, Jack,Garrigue, Roger,Daydou, Francis
p. 474 - 477
(2007/10/02)
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