Acrylated polyamides, their preparation and uses

Details Acrylated polyamides, their preparation and uses Acrylated polyamides, their preparation and uses

C - Chemistry, Metallurgy

08

F

C08F 283/04 (2006.01) C09D 11/10 (2006.01) C09D 151/08 (2006.01)

Patent

CA 2590006

A radiation-curable acrylate-modified aminoamide resin which is the Michael addition product of an aminoamide thermoplastic polymer derived from a polymerised unsaturated fatty acid with a polyol ester having at least three (meth)acrylate ester groups, the aminoamide thermoplastic polymer having an amine number of from 40 to 60mgKOH/g, the ratio of the initial (meth) acrylate groups of the polyol ester to the initial amino functional groups of the aminoamide polymer being at least 4:1, is liquid at 25~C, and is useful as the resin component of various types of energy-curable coating composition, including inks, varnishes and lacquers, especially lithographic inks.

La présente invention se rapporte à une résine aminoamide acrylate modifiée durcissable par rayonnement, qui est le produit d'addition de Michael d'un polymère thermoplastique aminoamide dérivé d'un acide gras insaturé polymérisé et d'un ester de polyol possédant au moins trois groupes esters de (méth)acrylate, le polymère thermoplastique aminoamide possédant un nombre amine compris entre 40 et 60 mgKOH/g, le rapport entre les groupes (méth)acrylate initiaux de l'ester de polyol et les groupes fonctionnels amino initiaux du polymère aminoamide étant d'au moins 4:1, ledit polymère étant liquide à 25 °C, et pouvant servir de composant de résine pour divers types de compositions de revêtement durcissables par énergie, notamment d'encres, de vernis et de laques, en particulier d'encres lithographiques.

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