A film-forming polymeric sol composition

B - Operations – Transporting – 05 – D

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B05D 7/00 (2006.01) C08J 3/00 (2006.01) C08J 3/07 (2006.01) C08L 101/00 (2006.01) C09D 201/02 (2006.01)

Patent

CA 2341444

The present invention relates to a quick set composition and a method for preparing the composition. The composition comprises an aqueous sol of a polymer having a backbone that contains pendant cationic groups and pendant acid groups. The sol is prepared by forming a solution of a polymer that contains pendant cationic groups and pendant acid groups in an aqueous-based solvent that contains water and a suitable organic solvent and removing a sufficient amount of the organic solvent from the solution to form a composition characterized by being reversibly dissolvable and reconstitutable by addition and removal of a suitable organic solvent. The composition of the present invention provides quick-set films that can be prepared in the absence additional surface active agents and with a substantial absence of organic solvents.

L'invention concerne une composition à prise rapide et un procédé permettant de préparer ladite composition. La composition comprend un sol aqueux d'un polymère ayant un squelette qui contient des groupes cationiques latéraux et des groupes acides latéraux. Le sol est préparé par la formation d'une solution polymère contenant des groupes cationiques latéraux et des groupes acides latéraux dans un solvant à base aqueuse, lequel contient de l'eau et un solvant organique approprié, et par le prélèvement, de la solution, d'une quantité suffisante du solvant organique de façon à constituer une composition caractérisée par le fait que l'on peut la dissoudre et la reconstituer de manière réversible par l'adjonction et le prélèvement d'un solvant organique approprié. La composition fournit des films à prise rapide que l'on peut préparer en l'absence d'agents de surface supplémentaires actif et avec une sensible absence de solvants organiques.

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