Dual functional cellulosic additives for latex compositions

C - Chemistry – Metallurgy – 08 – B

Patent

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Details

C08B 11/187 (2006.01) C08B 11/193 (2006.01) C08L 1/26 (2006.01) C09D 5/02 (2006.01) C09D 7/00 (2006.01) C09D 101/26 (2006.01) C09D 131/04 (2006.01) C09D 133/06 (2006.01) C09D 201/00 (2006.01)

Patent

CA 2165577

Cellulose ether derivatives comprising a hydrophobic substituent having an unsaturated alkyl portion are disclosed. The unsaturation in the alkyl portion of the hydrophobic substituent can promote crosslinking of the cellulose ether derivative. The cellulose ether derivatives are useful as ingredients in latex compositions. The cellulose ether derivatives can provide associative thickening and rheological properties to latex composition during storage and application. In addition, after the latex composition is applied to the surface to be coated, the cellulose ethers of the present invention can promote crosslinking of the latex film to provide a hard and durable coating. Latex paint compositions comprising the cellulose ether derivatives of the present invention are also disclosed.

Les dérivés d'éther de cellulose faisant l'objet de la présente divulgation comprennent un substituant hydrophobe possédant un groupement alkyle insaturé. L'insaturation du groupement alkyle du substituant hydrophobe peut favoriser la réticulation du dérivé d'éther de cellulose. Les dérivés d'éther de cellulose sont utilisés comme ingrédients dans les compositions au latex. Les dérivés d'éther de cellulose peuvent présenter une associativité de propriétés d'épaississement et rhéologiques à la composition au latex pendant l'entreposage et l'application. De plus, lorsque la composition au latex est appliquée sur la surface à recouvrir, les éthers de cellulose divulgués dans le présent brevet peuvent favoriser la réticulation de la pellicule de latex afin de fournir un revêtement dur et durable. Le présent brevet porte également sur des compositions de peinture au latex contenant des dérivés d'éther de cellulose divulgués dans le brevet.

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