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US5445761A
Expired / Lapsed
US
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Percarbonate based cleaner for cosmetic and pharmaceutical manufacturing facilities
Assignee: American Sterilizer Co
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Filing: 1993-09-24
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Granted: 1995-08-29
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Expires: 2013-09-24
Abstract
Abstract The present invention claims and describes an environmentally sound percarbonate based cleaner for removing cosmetic and pharmaceutical soils from pharmaceutical or cosmetic manufacturing surfaces. The invention includes a combination of a percarbonate; an ethylene oxide/propylene oxide block copolymer surfactant; and a bicarbonate salt. The invention is useful for removing hard-to-remove soils from a pharmaceutical or cosmetic manufacturing surface.
Inventors
- 👤 Sadiq Shah
- 👤 Fred Kirchner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:34
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/722; C11D1/38; C11D1/42; C11D1/44; C11D3/00; C11D3/02; C11D3/04; C11D3/10; C11D3/16; C11D3/37; C11D3/3703; C11D3/3707; C11D3/39; C11D3/3942
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
37 words
A cleansing formulation free of organic solvents comprising: (a) 40-99.99 weight percent of a percarbonate salt; (b) 0.01-20 weight percent of an ethylene oxide/propylene oxide block copolymer surfactant; and (c) 0-60 weight percent of a bicarbonate salt.
Claim 2
Dependent Claim
37 words
A cleansing formulation free of organic solvents comprising: (a) 40-99.99 weight percent of a percarbonate salt; (b) 0.01-20 weight percent of an ethylene oxide/propylene oxide block copolymer surfactant; and (c) 0-60 weight percent of a bicarbonate salt.
Claim 3
Dependent Claim
95 words
The cleansing formulation of claim 1 wherein: (a) the percarbonate salt is selected from the group consisting of sodium, potassium, or calcium percarbonate; (b) the ethylene oxide/propylene oxide block copolymer surfactant is selected from a compound of the formula: ##STR8## where x and x' are 2-122 and y is 16-54; or ##STR9## where x and x' are 7-21 and y is 4-163; or ##STR10## wherein x, x', x" and x'" are 2-122 and y,y', y" and y'" are 2-32; and (c) the bicarbonate salt is selected from the group consisting of sodium or potassium bicarbonate.
Claim 4
Dependent Claim
49 words
The cleansing formulation of claim 2 wherein: (a) the percarbonate is sodium percarbonate; (b) the ethylene oxide/propylene oxide block copolymer surfactant is selected from a compound of the formula: ##STR11## where x=75, y=30 and x'=75; or ##STR12## where x=18, y=14 and x'=18; and (c) the bicarbonate is sodium bicarbonate.
Claim 5
Dependent Claim
42 words
The cleansing formulation of claim 3, wherein: (a) the percarbonate is sodium percarbonate; (b) the ethylene oxide/propylene oxide block copolymer surfactant is selected from a compound of the formula: ##STR13## where x=75, y=30 and x'=75; and (c) the bicarbonate is sodium bicarbonate.
Claim 6
Dependent Claim
55 words
The cleansing formulation of claim 1 wherein the weight amounts of percarbonate salt, ethylene oxide/propylene oxide block copolymer surfactant, and bicarbonate salt are: (a) about 70-80 wt. % of a percarbonate salt; (b) about 0.1-0.5 wt. % of an ethylene oxide/propylene oxide block copolymer surfactant; and (c) about 19.5-29.9 wt. % of a bicarbonate salt.
Claim 7
Dependent Claim
55 words
The cleansing formulation of claim 2 wherein the weight amounts of percarbonate salt, ethylene oxide/propylene oxide block copolymer surfactant, and bicarbonate salt are: (a) about 70-80 wt. % of a percarbonate salt; (b) about 0.1-0.5 wt. % of an ethylene oxide/propylene oxide block copolymer surfactant; and (c) about 19.5-29.9 wt. % of a bicarbonate salt.
Claim 8
Dependent Claim
55 words
The cleansing formulation of claim 3 wherein the weight amounts of percarbonate salt, ethylene oxide/propylene oxide block copolymer surfactant, and bicarbonate salt are: (a) about 70-80 wt. % of a percarbonate salt; (b) about 0.1-0.5 wt. % of an ethylene oxide/propylene oxide block copolymer surfactant; and (c) about 19.5-29.9 wt. % of a bicarbonate salt.
Claim 9
Dependent Claim
55 words
The cleansing formulation of claim 4 wherein the weight amounts of percarbonate salt, ethylene oxide/propylene oxide block copolymer surfactant, and bicarbonate salt are: (a) about 70-80 wt. % of a percarbonate salt; (b) about 0.1-0.5 wt. % of an ethylene oxide/propylene oxide block copolymer surfactant; and (c) about 19.5-29.9 wt. % of a bicarbonate salt.
Claim 10
Dependent Claim
34 words
The cleansing formulation of claim 5, wherein the percarbonate is about 74.7 weight percent, the ethylene oxide/propylene oxide block copolymer surfactant is about 0.3 weight percent and the bicarbonate is about 25.0 weight percent.
Claim 11
Dependent Claim
34 words
The cleansing formulation of claim 6, wherein the percarbonate is about 74.7 weight percent, the ethylene oxide/propylene oxide block copolymer surfactant is about 0.3 weight percent and the bicarbonate is about 25.0 weight percent.
Claim 12
Dependent Claim
34 words
The cleansing formulation of claim 7, wherein the percarbonate is about 74.7 weight percent, the ethylene oxide/propylene oxide block copolymer surfactant is about 0.3 weight percent and the bicarbonate is about 25.0 weight percent.
Claim 13
Dependent Claim
34 words
The cleansing formulation of claim 8, wherein the percarbonate is about 74.7 weight percent, the ethylene oxide/propylene oxide block copolymer surfactant is about 0.3 weight percent and the bicarbonate is about 25.0 weight percent.
Claim 14
Dependent Claim
13 words
A cleansing solution comprising the cleansing formulation of claim 1 and a diluent.
Claim 15
Dependent Claim
13 words
A cleansing solution comprising the cleansing formulation of claim 2 and a diluent.
Claim 16
Dependent Claim
13 words
A cleansing solution comprising the cleansing formulation of claim 3 and a diluent.
Claim 17
Dependent Claim
13 words
A cleansing solution comprising the cleansing formulation of claim 4 and a diluent.
Claim 18
Dependent Claim
21 words
The cleansing solution of claim 13 wherein the cleaning formulation is 1-10 weight percent of the total weight of the solution.
Claim 19
Dependent Claim
21 words
The cleansing solution of claim 14 wherein the cleaning formulation is 1-10 weight percent of the total weight of the solution.
Claim 20
Dependent Claim
21 words
The cleansing solution of claim 15 wherein the cleaning formulation is 1-10 weight percent of the total weight of the solution.
Claim 21
Dependent Claim
21 words
The cleansing solution of claim 16 wherein the cleaning formulation is 1-10 weight percent of the total weight of the solution.
Claim 22
Dependent Claim
22 words
The cleansing solution of claim 17 wherein the cleansing formulation is about 4 weight percent of the total weight of the solution.
Claim 23
Dependent Claim
22 words
The cleansing solution of claim 18 wherein the cleansing formulation is about 4 weight percent of the total weight of the solution.
Claim 24
Dependent Claim
22 words
The cleansing solution of claim 19 wherein the cleansing formulation is about 4 weight percent of the total weight of the solution.
Claim 25
Dependent Claim
22 words
The cleansing solution of claim 20 wherein the cleansing formulation is about 4 weight percent of the total weight of the solution.
Claim 26
Dependent Claim
24 words
A method of removing pharmaceutical and cosmetic soils, comprising administering to a surface in need of treatment thereof the cleaning formulation of claim 1.
Claim 27
Dependent Claim
24 words
A method of removing pharmaceutical and cosmetic soils, comprising administering to a surface in need of treatment thereof the cleaning formulation of claim 2.
Claim 28
Dependent Claim
24 words
A method of removing pharmaceutical and cosmetic soils, comprising administering to a surface in need of treatment thereof the cleaning formulation of claim 3.
Claim 29
Dependent Claim
24 words
A method of removing pharmaceutical and cosmetic soils, comprising administering to a surface in need of treatment thereof the cleaning formulation of claim 4.
References Cited (Backward Citations)
US5030377A
Cited
US5089162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-28 | 1999-02-27 | 1999-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-28 | 2003-02-27 | 2003-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-28 | 2007-02-27 | 2007-08-29 | $7700.00 | Window Closed / Lapsed |