Water soluble resins and application thereof to paper coating

Details Water soluble resins and application thereof to paper coating Water soluble resins and application thereof to paper coating

C - Chemistry, Metallurgy

08

G

C08G 71/00 (2006.01) C08G 18/64 (2006.01) C08G 73/00 (2006.01) C08G 73/02 (2006.01) D21H 17/55 (2006.01) D21H 19/62 (2006.01)

Patent

CA 2202415

A water soluble resin obtainable by reacting at least two members comprising a polyamine and a urea compound, or at least four members comprising a polyamine, a urea compound, a dibasic carboxylic acid compound and a lactam, followed by reacting the reaction product with a cross-linking compound selected from epihalohydrins, .alpha. , .gamma. -dihalo- .beta. - hydrins, glycidyl compounds and isocyanates; and the water soluble resin is useful for paper coating composition by being mixed with a pigment and an aqueous binder; and the paper coating composition does not generate formaldehyde and can give coated papers with various improved properties including excellent ink acceptability and water resistance.

Résine hydrosoluble que l'on peut obtenir en faisant réagir au moins deux éléments comprenant une polyamine et un composé de l'urée, ou au moins quatre éléments comprenant une polyamine, un composé de l'urée, un composé d'acide carboxylique dibasique et une lactame; on fait ensuite réagir le produit de réaction avec un composé de réticulation choisi parmi les épihalohydrines, les alpha-gamma-dihalo-bêta-hydrines, les composés glycidyliques et les isocyanates; la résine hydrosoluble est utile comme composition de couchage du papier lorsqu'elle est mélangée à un pigment et à un liant aqueux; la composition de couchage du papier ne produit pas de formaldéhyde et peut donner des papiers couchés possédant des propriétés améliorées dont une excellente réceptivité à l'encre et une excellente résistance à l'eau.

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