Multilayer detergent in block form
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United States of America Patent
Stats
-
May 9, 1989
Grant Date -
N/A
app pub date -
Nov 17, 1986
filing date -
Nov 21, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A block-form detergent composition for dishwashing machines based on alkali metal metasilicates, pentaalkali metal triphosphates, active chlorine compound, and surfactant. The block-form detergent composition comprises a cold water-soluble layer (1) comprising alkali metal metasilicates, and a warm water-soluble layer (2) comprising alkali metal metasilicates and pentaalkali metal triphosphate. The layer (1) and layer (2) are formed as separate melts, one melt is poured into a mold to cool and partially solidify, and the other melt added to the mold whereby the layers fuse to each other. In use, the layer (1) and layer (2) have different dissolving rates in the time-temperature program of the dishwashing machines.
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