Process for the preparation of a crosslinker composition

Details Process for the preparation of a crosslinker composition Process for the preparation of a crosslinker composition

C - Chemistry, Metallurgy

08

K

C08K 3/38 (2006.01) C08L 61/26 (2006.01) C08L 61/32 (2006.01) C09D 161/26 (2006.01) C09D 161/32 (2006.01)

Patent

CA 2707485

This invention is directed to a process for the preparation of a crosslinker composition, comprising the steps of providing a mixture of an aliphatic alcohol A having at least one hydroxyl group and from 1 to 10 carbon atoms, with at least one multifunctional aldehyde C having at least two aldehyde groups -CHO to form a mixture AC, heating the mixture AC to convert at least a part of the multifunctional aldehyde C to its hemiacetal or to its acetal to form a mixture (AC)', adding to the mixture (AC)' least one cyclic urea U or the educts to produce the said cyclic urea U in situ, which cyclic urea U has at least one unsubstituted >NH group, and reacting the mixture thus obtained to form a chemical bond between the nitrogen atom of the at least one unsubstituted >NH group of the at least one cyclic urea U5 and the carbon atom of the least one aldehyde group -CHO of the multifunctional aldehyde C, and coating compositions comprising the said crosslinker composition.

Cette invention concerne un procédé de préparation d'une composition d'agent réticulant, comprenant les étapes consistant à fournir un mélange constitué d'un alcool aliphatique A ayant au moins un groupe hydroxyle et de 1 à 10 atomes de carbone, et d'au moins un aldéhyde C multifonctionnel ayant au moins deux groupes aldéhyde -CHO pour former un mélange AC ; à chauffer le mélange AC pour convertir au moins une partie de l'aldéhyde C multifonctionnel en son hémiacétal ou en son acétal pour former un mélange (AC)' ; à ajouter au mélange (AC)' au moins une urée cyclique U ou les produits de départ pour produire ladite urée cyclique U in situ, ladite urée cyclique U ayant au moins un groupe NH non substitué ; et à faire réagir le mélange ainsi obtenu pour former une liaison chimique entre l'atome d'azote du ou des groupes NH non substitués de ou des urées cycliques U avec l'atome de carbone du ou des groupes aldéhyde -CHO de l'aldéhyde C multifonctionnel. L'invention concerne également des compositions de revêtement comprenant ladite composition d'agent réticulant.

Affiliated with

Also associated with

Rating

Process for the preparation of a crosslinker composition does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of a crosslinker composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of a crosslinker composition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1555524