Aqueous silylated polymer curable compositions

C - Chemistry – Metallurgy – 08 – L

Patent

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C08L 101/10 (2006.01) C08J 3/24 (2006.01) C08L 43/04 (2006.01) C08L 101/08 (2006.01) C09D 201/10 (2006.01)

Patent

CA 2207472

Curable compositions comprising stable, water dispersible, curable polymers containing sterically hindered alkoxylated silane groups and acid groups blocked by fugitive bases at 0.1 to 75 weight percent of the total composition and water at 99.9 to 25 weight percent of the total composition are taught herein, as well as methods for the use and manufacture thereof. Additional components, such as emulsifiers, buffers and thickeners are also taught. These compositions are useful as adhesives, sealants and paints. The compositions have improved properties including solvent resistance, adhesion, hardness, abrasion resistance and mar resistance.

Compositions durcissables comportant des polymères durcissables, stables et dispersibles dans l'eau qui contiennent des groupes silane alcoxylés à encombrement stérique et des groupes acides bloqués par des bases fugitives en quantité allant de 0,1 à 75 % en poids de la composition totale et de l'eau en quantité allant de 99,9 à 25 % en poids de la composition totale, ainsi que procédés d'utilisation et de préparation desdites compositions. Des constituants supplémentaires tels que des émulsifiants, des tampons et des épaississants sont également décrits. Lesdites compositions sont utiles en tant qu'adhésifs, matériaux d'étanchéité et peintures. Elles présentent des propriétés améliorées, dont la résistance aux solvants, l'adhérence, la dureté, la résistance à l'abrasion et la résistance aux dommages.

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