Mixed powder or mixed granule based on mgda

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 3/33 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2572311

Disclosed is a powder mixture or granulate mixture containing at least 80 percent by weight of a mixture of (a) 5 to 95 wt. % of at least one glycine- N,N-diacetic acid derivative of general formula (I) MOOC-CHR-N(CH2COOM)2 (I), wherein R represents C1-12 alkyl and M represents alkali metal, and (b) 5 to 95 wt. % of at least one polyethylene glycol, at least one nonionic surfactant, a mixture thereof, or a polymer selected among the group comprising polyvinyl alcohols, polyvinylpyrrolidones (PVP), polyalkylene glycols, and derivatives thereof. Also disclosed are methods for producing said powder mixtures or granulate mixtures, the use thereof, and a solid detergent and a solid dishwashing substance containing the inventive powder mixture or granulate mixture.

L'invention concerne un mélange de poudres ou de granulés contenant au moins 80 % en poids d'un mélange composé de (a) 5 à 95 % d'au moins un dérivé d'acide glycine-N,N-di-acétique de la formule générale (I) MOOC-CHR-N(CH2COOM)2 (I) où R représente C1-12-alkyle, M représente un métal alcalin ; (b) 5 à 95 % en poids d'au moins un polyéthylènglycol ou au moins d'un tensio-actif non ionique ou un de leurs mélanges ou d'un polymère sélectionné dans le groupe constitué d'alcools polyvinyliques, de polyvinylpyrrolidones (PVP), de polyalkylènglycols et de leurs dérivés. L'invention concerne également un procédé de production de ces mélanges de poudres ou de granulés, l'utilisation de ces mélanges de poudres ou de granulés, ainsi qu'un détergent de lessive et un détergent de vaisselle solide contenant le mélange de poudres ou de granulés selon l'invention.

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