Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1989-02-27
1990-10-23
Clingman, A. Lionel
Compositions
Water-softening or purifying or scale-inhibiting agents
252 91, 252 99, 25218625, 25218635, 252DIG12, 427213, 427214, 427221, 435188, C11D 338, C11D 742, C12N 1114, D06L 316
Patent
active
049650122
ABSTRACT:
A composition capable of releasing active enzyme into an aqueous, active chlorine containing media which in a first aspect comprises an enzyme core encapsulated with an initial coating of a time-release substance, a first coating of a bleach-neutralizing substance and a second coating of a time-release substance.
In a second aspect, the composition comprises an enzyme encapsulated in a time-release substance designed to delay release of the enzyme in dissolution for a first-time delay, and a bleach-neutralizing substance, present as either a core material and/or a first coating on a diluent core, which is encapsulated in a time-release substance designed to delay release of the bleach-neutralizing substance into solution for a second-time delay; the first-time delay being longer than the second-time delay so that the bleach-neutralizing substance will be released and completely neutralize all active chlorine present in the solution before the enzyme is released.
In a third aspect, the composition comprises an enzyme core encapsulated with a time-release substance, a diluent core encapsulated with a first coating of a bleach-neutralizing substance and a second coating of a time-release substance, and a bleach-neutralizing substance core encapsulated with a time-release substance.
The invention further includes a cleaning composition which is particularly effective in warewashing which comprises one of the encapsulated enzyme-containing compositions described above, chlorine bleach, and at least one additional detergent component.
REFERENCES:
patent: 3042621 (1962-07-01), Kirschenbauer
patent: 3723327 (1973-03-01), van Kampen
patent: 3893954 (1975-07-01), Tivin
patent: 4421664 (1983-12-01), Anderson
patent: 4552679 (1985-11-01), Schobel
patent: 4707287 (1987-11-01), Herdeman
patent: 4830773 (1989-05-01), Olson
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