Nonphosphated automatic dishwashing compositions with oxygen ble

Details Nonphosphated automatic dishwashing compositions with oxygen ble Nonphosphated automatic dishwashing compositions with oxygen ble

1992-06-29

1994-03-08

Albrecht, Dennis

Compositions

Electrolytes for electrical devices

252 891, 252 95, 252102, 252174, 25217414, 25217419, 25217424, 252DIG11, C11D 337, C11D 712, C11D 718, C11D 1706

Patent

active

052924467

ABSTRACT:
Disclosed is a process for making nonphosphated automatic dishwashing detergents which have granular form and comprise a conventional nonphosphorus builder system consisting essentially of an organic builder salt (such as citrate) and a dispersant (such as a polyacrylate); and an oxygen bleach system comprising a chelant (such as ethylenediamine disuccinate) and a bleach active (such as perborate or percarbonate) optionally with enzymes and/or dry-mixed hydrous silicates. The invention secures stable, free-flowing granules by a premix step in which the chelant and dispersant are brought together; a drying step using conventional equipment; and one or more admix steps in which the bleach active is mixed with the product of the drying step.

REFERENCES:
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patent: 4959409 (1990-09-01), Heinzman
patent: 4983315 (1991-01-01), Glogowski

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