Solidification matrix using a polycarboxylic acid polymer

C - Chemistry – Metallurgy – 11 – D

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C11D 3/37 (2006.01)

Patent

CA 2705712

A solidification matrix includes a polycarboxylic acid polymer, sodium carbonate, and water. Exemplary polycarboxylic acid polymers include a polyacrylic acid polymer having a molecular weight of between about 1,000 and about 100,000, a modified polyacrylic acid polymer having a molecular weight of between about 1,000 and about 100,000, and a polymaleic acid polymer having a molecular weight of between about 500 and about 5,000. The polycarboxylic acid polymer, sodium carbonate, and water interact to form a hydrate solid. The solidification matrix may be used, for example, in a solid detergent composition.

La présente invention concerne une matrice de solidification comprenant un polymère d'acide polycarboxylique, du carbonate de sodium et de l'eau. Des exemples de polymères d'acide polycarboxylique sont un polymère d'acide polyacrylique présentant un poids moléculaire situé entre environ 1000 et environ 100000, un polymère d'acide polyacrylique modifié présentant un poids moléculaire situé entre environ 1000 et environ 100000, et un polymère d'acide polymaléique présentant un poids moléculaire situé entre environ 500 et environ 5000. Le polymère d'acide polycarboxylique, le carbonate de sodium et l'eau interagissent de manière à former un hydrate solide. La matrice de solidification selon l'invention peut par exemple être utilisée dans une composition détergente solide.

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