Condensation polymer containing hydroxyalkylamide groups

Details Condensation polymer containing hydroxyalkylamide groups Condensation polymer containing hydroxyalkylamide groups

C - Chemistry, Metallurgy

08

G

C08G 69/44 (2006.01) C08G 63/685 (2006.01)

Patent

CA 2305364

The invention relates to a linear or branched polymer containing ester groups and at least one amide group in the backbone, having hydroxyalkylamide end groups and having a weight average molecular mass of >=800 g/mol. The invention also relates to an entirely or partly modified polymer. The polymer according to the invention can for example be obtained by reaction of a cyclic anhydride and an alkanolamine to form a .beta.-hydroxyalkylamide, after which a polyesteramide is obtained through polycondensation. The polymers according to the invention can, for example, be used in thermosetting powder-paint compositions.

L'invention concerne un polymère linéaire ou ramifié contenant des groupes esters et au moins un groupe amide dans le squelette. Ledit polymère présente des groupes d'extrémité hydroxylalkylamides et a un masse moléculaire moyenne >/=800 g/mol. L'invention porte aussi sur un polymère partiellement ou intégralement modifié. Le polymère de l'invention peut, par exemple, être produit par la mise en réaction d'un anhydride et d'une alcanolamine, de sorte qu'un beta -hydroxyalkylamide soit formé, après quoi un polyesteramide est produit par polycondensation. Les polymères selon l'invention peuvent, par exemple, être utilisés dans des compositions de peinture en poudre thermodurcissables.

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