Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1983-07-28
1984-08-07
Kittle, John E.
Compositions
Water-softening or purifying or scale-inhibiting agents
252 99, 252102, C11D 754, C11D 756, C11D 712, C11D 1706
Patent
active
044642814
ABSTRACT:
A method for stabilizing automatic dishwasher detergents containing bleach-sensitive dyes against decolorization by the bleaching agents of the compositions. The detergent powders comprise about 5-70% of a builder, 1-15% of a nonionic surfactant, 1-20% of a silicate, 0-60% of a filler, 0.001-0.1% of a bleach-sensitive dye, water and a bleaching agent. Prior to the addition of bleaching agent, the composition is pre-conditioned by contact with a flow of air. The resultant powder has a color that remains essentially unchanged even after storage for two months at elevated temperatures.
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Bauer Herbert
Camps Edilia
Rapisarda Anthony
Farrell James J.
Honig Milton L.
Kittle John E.
Lever Brothers Company
Shah Mukund J.
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