Multilayer detergent tablets for dishwashing machines

C - Chemistry – Metallurgy – 11 – D

Patent

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134/5.2

C11D 3/395 (2006.01) C11D 3/06 (2006.01) C11D 3/08 (2006.01) C11D 17/00 (2006.01)

Patent

CA 1277889

ABSTRACT OF THE DISCLOSURE A multilayer detergent tablet for dishwashing machines based on alkali metal metasilicates, pen- taalkali metal triphosphates, active chlorine compound, and surfactant. The tablet comprises a first cold water-soluble layer of alkali metal metasilicate nona- hydrate, pentaalkali metal triphosphate, and a low- foaming nonionic surfactant; and a second layer which dissolves rapidly at increasing water temperatures comprising alkali metal metasilicate, pentaalkali metal triphosphate, and an active chlorine compound.

523270

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