US4421664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compatible enzyme and oxidant bleaches containing cleaning composition
Assignee: Ecolab Inc
•
Filing: 1982-06-18
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Granted: 1983-12-20
•
Expires: 2002-06-18
Abstract
Abstract Stabilized cleaning compositions comprise a biochemical soil degrading enzyme, a slow release oxidant bleach composition and an effective amount of a reducing agent to prevent the appearance of an enzyme deactivating concentration of oxidant bleach composition permitting the enzyme to degrade biochemical soils before bleaching action begins.
Inventors
- 👤 Charles R. Anderson
- 👤 Thomas R. Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:17
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3955; C11D17/00; C11D17/0039; C11D3/0005; C11D3/0042; C11D3/16; C11D3/38; C11D3/386; C11D3/38627; C11D3/39; C11D3/3942; C11D3/3945; C11D3/3953
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
98 words
A cleaning composition, having a combination of bleaching action and enzymatic degradation of biochemical soils, which comprises a slow release oxidant bleach composition which delays the appearance of the full concentration of the oxidant bleach, said composition having a tendency to release a small enzyme deactivating amount of the oxidant, prior to the full concentration of the bleach being released, a biological soil degrading enzyme and an amount of a chemical reducing agent effective to delay the appearance of an enzyme deactivating concentration of oxidant bleach composition until the full concentration of the oxidant bleach composition is released.
Claim 2
Dependent Claim
98 words
A cleaning composition, having a combination of bleaching action and enzymatic degradation of biochemical soils, which comprises a slow release oxidant bleach composition which delays the appearance of the full concentration of the oxidant bleach, said composition having a tendency to release a small enzyme deactivating amount of the oxidant, prior to the full concentration of the bleach being released, a biological soil degrading enzyme and an amount of a chemical reducing agent effective to delay the appearance of an enzyme deactivating concentration of oxidant bleach composition until the full concentration of the oxidant bleach composition is released.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein the slow release oxidant bleach composition comprises an encapsulated oxidant bleach composition.
Claim 4
Dependent Claim
16 words
The composition of claim 2 wherein the encapsulated oxidant bleach composition comprises an encapsulated peroxy bleach.
Claim 5
Dependent Claim
17 words
The composition of claim 3 wherein the encapsulated peroxy bleach composition comprises an encapsulated organic peroxy bleach.
Claim 6
Dependent Claim
28 words
The composition of claim 4 wherein the encapsulated organic peroxy bleach comprises an encapsulated diperoxy acid bleach or an encapsulated water soluble salt of a diperoxy acid bleach.
Claim 7
Dependent Claim
18 words
The composition of claim 2 wherein the encapsulated oxidant bleach composition comprises an encapsulated chlorine or chlorine-yielding composition.
Claim 8
Dependent Claim
29 words
The composition of claim 6 wherein the encapsulated chlorine-yielding composition comprises an encapsulated chlorinated silicate metal phosphate, an alkali metal or alkaline earth metal hypochlorite, N-chlorosuccinimide or mixtures thereof.
Claim 9
Dependent Claim
16 words
The composition of claim 6 wherein the encapsulated chlorine-yielding composition comprises an encapsulated alkali metal dichloroisocyanurate.
Claim 10
Dependent Claim
15 words
The composition of claim 8 wherein the encapsulated alkali metal dichloroisocyanurate comprises encapsulated potassium dichloroisocyanurate.
Claim 11
Dependent Claim
29 words
The composition of claim 2 wherein the encapsulated oxidant bleach compound encapsulating material comprises a fatty acid, a natural wax, a synthetic resin, an inorganic coating or mixtures thereof.
Claim 12
Dependent Claim
14 words
The composition of claim 10 wherein the synthetic resin comprises an ethylene-vinyl acetate polymer.
Claim 13
Dependent Claim
24 words
The composition of claim 1 wherein the biological soil degrading enzyme comprises a proteolytic enzyme, a lipolytic enzyme, an amylolytic enzyme or mixtures thereof.
Claim 14
Dependent Claim
45 words
The composition of claim 1 wherein the chemical reducing agent comprises a composition that can reduce the oxidant bleach composition compound to a nonoxidizing species at a rate that an enzyme deactivating concentration of oxidant does not appear in solution for at least one minute.
Claim 15
Dependent Claim
30 words
The composition of claim 1 wherein the chemical reducing agent comprises an alkali metal sulfite, an alkali metal thiosulfite, an alkali metal metabisulfite, an alkali metal hydrosulfite, or mixtures thereof.
Claim 16
Dependent Claim
13 words
The composition of claim 1 wherein the chemical reducing agent comprises sodium metabisulfite.
Claim 17
Dependent Claim
21 words
The composition of claim 1 wherein there is an additional component comprising an anionic detergent, a nonionic detergent or mixtures thereof.
Claim 18
Dependent Claim
21 words
The composition of claim 16 wherein there is an additional component comprising a detergent builder, a suds suppressor or mixtures thereof.
Claim 19
Dependent Claim
21 words
A method of cleaning which comprises contacting a soiled article with an aqueous solution of the cleaning composition of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |