Delayed-release encapsulated warewashing composition

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 17/00 (2006.01) C11D 1/66 (2006.01) C11D 1/72 (2006.01) C11D 3/06 (2006.01) C11D 3/20 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2188665

A delayed-release composite particle is provided which comprises (a) a core particle comprising an inorganic detergent builder salt and an effective amount of at least one wash additive; and (b) a waxy coating encapsulating said core particle, which coating has a melting point of greater than about 65°C and which chemically disintegrates in aqueous solution at a temperature of less than about 65 °C and a pH of above about 9Ø

L'invention concerne une particule composite à libération retardée constituée (a) d'une particule centrale comprenant un sel adjuvant détergent inorganique et une dose efficace d'au moins un additif de lavage; et (b) un revêtement paraffineux utilisé pour encapsuler ladite particule centrale, présentant un point de fusion supérieur à environ 65 ~C et se désintégrant chimiquement dans une solution aqueuse, à des températures inférieures à environ 65 ~C et à un pH de plus de 9,0.

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