Modified aminotriazine resin and method for the production...

Details Modified aminotriazine resin and method for the production... Modified aminotriazine resin and method for the production...

C - Chemistry, Metallurgy

08

G

C08G 12/30 (2006.01) C08G 12/32 (2006.01)

Patent

CA 2577944

The invention relates to a modified aminotriazine resin, particularly melamine formaldehyde resin, which has a high reactivity and can be obtained by reacting a modified aminotriazine resin melt with at least one aminotriazine, particularly melamine, which is in the form of a solid and/or a suspension, at a temperature ranging from 130 to 250 ~C and with a dwell time of 30 to 600 s. This makes it possible to produce aminotriazine resins that have an increased reactivity during molar mass build-up inside the extruder and during the final curing, and even in the event of high aminotriazine contents, are stabile and capable of being stored.

L'invention concerne une résine aminotriazine modifiée, notamment de la résine mélanine-formaldéhyde, à haute réactivité, obtenue par réaction d'une résine aminotriazine fondue modifiée, avec au moins une aminotriazine sous forme de solide et/ou de suspension, notamment de la mélanine, à une température comprise entre 130 et 250 °C et un temps de séjour de 30 à 600 s. L'invention permet de produire des résines aminotriazine qui présentent une plus grande réactivité lors de l'élaboration de la masse molaire dans l'extrudeuse et lors du durcissement final et qui sont en outre stables et aptes au stockage, même à des teneurs en aminotriazine élevées.

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