Hydrophobically modified resin compositions and uses thereof

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 73/02 (2006.01) C08G 59/10 (2006.01) D21H 17/56 (2006.01) D21H 21/16 (2006.01)

Patent

CA 2261954

Resin compositions that are the reaction product of epihalohydrin and hydrophobically modified aminoamide obtained by the reaction of: (a) aminoamide containing at least one primary amine group and at least one secondary and/or tertiary amine groups, the aminoamide being obtained by reaction of polyamine containing at least two primary amine groups and at least one secondary and/or tertiary amine group, with dicarboxylic acid or derivatives thereof, wherein the molar ratio of polyamine to dicarboxylic acid or derivative thereof, is greater than about 1.4:1, and, (b) hydrophobizing agent having from about 12 to about 40 carbon atoms, wherein the amount of hydrophobizing agent employed is sufficient to react with at least a portion of the primary amine groups, but insufficient to react with more than about 60 % of the secondary and/or tertiary amine groups of the aminoamide. Also disclosed are uses of the compositions in the treatment of paper, particularly the sizing of paper.

Compositions résineuses qui sont le produit de réaction de l'épihalohydrine et de l'aminoamide hydrophobiquement modifié obtenu par la réaction de ce qui suit: a) aminoamide contenant au moins une groupe aminé primaire et au moins un groupe aminé secondaire et/ou un groupe aminé tertiaire, l'aminoamide étant obtenu en mettant à réagir de la polyamine contenant au moins deux groupes aminés primaires et au moins un groupe aminé secondaire et/ou un groupe aminé tertiaire, avec de l'acide dicarboxylique ou des dérivés de celui-ci, le rapport molaire entre la polyamine, d'une part, et l'acide dicarboxylique ou un dérivé, d'autre part, étant supérieur à 1,4:1, et b) un agent hydrophobisant ayant entre environ 12 et environ 40 atomes de carbone; la quantité d'agent hydrophobisant utilisée suffit pour permettre une réaction avec au moins une portion des groupes aminés primaires, mais insuffisant pour permettre une réaction avec plus d'environ 60 % des groupes aminés secondaire et/ou tertiaires de l'aminoamide. L'invention porte également sur les applications de ces compositions dans le traitement du papier, notamment le collage.

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