Patent US6971011B1 successfully refreshed from Google Patents.
Patent EP0530949B1 successfully refreshed from Google Patents.
EP0530949B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cleaning through perhydrolysis conducted in dense fluid medium
Assignee: Clorox Co
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Filing: 1992-06-24
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Granted: 1995-09-06
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Expires: 2012-06-24
Abstract
Abstract The invention provides a cleaning agent and method for removing stains from fabrics comprising a combination of dense gas, a source of hydrogen peroxide and an organic bleach activator therefor. <IMAGE>
Inventors
- 👤 James D. Mitchell
- 👤 Vince Alvarez
- 👤 Daniel T. Carty
- 👤 James R. Latham
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:12
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/391; C11D3/3915; C11D3/3947; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12; D06L4/17; C11D2111/00; C11D2111/40
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
20 words
A cleaning composition comprising a combination of dense gas, a source of hydrogen peroxide and an organic bleach activator therefor.
Claim 2
Dependent Claim
34 words
A composition as claimed in claim 1 characterized in that said dense gas is selected from the group consisting of densified carbon dioxide, supercritical carbon dioxide, liquid carbon dioxide and liquids capable of gassification.
Claim 3
Dependent Claim
27 words
A composition as claimed in claim 1 or claim 2 characterized in that said source of hydrogen peroxide is selected from hydrogen peroxide or an inorganic peroxide.
Claim 4
Dependent Claim
20 words
A composition as claimed in any of claims 1-3 characterized in that the organic bleach activator is a carbonyl compound.
Claim 5
Dependent Claim
22 words
A composition as claimed in claim 4 characterized in that the carbonyl compound is an ester, in particular a substituted phenol ester.
Claim 6
Dependent Claim
30 words
A composition as claimed in claim 5 characterized in that the substituted phenol ester is an alkanoyloxybenzene, preferably an alkanoyloxyglycoylbenzene, particularly of the structure: wherein n₁ is 0 to 20.
Claim 7
Dependent Claim
34 words
A composition as claimed in claim 5 characterized in that the substituted phenol ester is an alkanoyloxyglycoylphenylsulfonate preferably of the formula: wherein n₁ is 0-20, and M is H, alkali metal or ammonium cation.
Claim 8
Dependent Claim
30 words
A composition as claimed in any of claims 2-7 characterized in that the said densified carbon dioxide has a pressure, at room temperature, of greater than 5,516 kPa (800 psi).
Claim 9
Dependent Claim
26 words
A composition as claimed in any of claims 1 to 8 further comprising a dispersant/emulsifier selected from the group consisting of surfactants, hydrotropes and mixtures thereof.
Claim 10
Dependent Claim
20 words
A composition as claimed in any of claims 1 to 9 further comprising a buffer for pH modification or maintenance.
Claim 11
Independent Claim
38 words
A method for the removal of stains comprising: contacting said stains with the combination of a fluid medium which is either densified carbon dioxide or supercritical fluid; a source of hydrogen peroxide and an organic bleach activator therefor.
Claim 12
Independent Claim
22 words
A method as claimed in any of claims 1 to 11 further comprising the step of removing said combination and said stains.
Claim 13
Dependent Claim
22 words
A method as claimed in claim 11 or claim 12 characterized in that densified carbon dioxide is used as the fluid medium.
Claim 14
Dependent Claim
37 words
A method as claimed in claim 13 wherein said densified carbon dioxide is selected from supercritical carbon dioxide and liquid carbon dioxide and preferably has a pressure at room temperature, of greater than 5,516 kPa (800 psi).
Claim 15
Independent Claim
32 words
A method as claimed in any of claims 11 to 14 characterized in that the source of hydrogen peroxide is selected from hydrogen peroxide or an inorganic peroxide placed in aqueous solution.
Claim 16
Independent Claim
31 words
A method as claimed in any of claims 11 to 15 characterized in that the organic bleach activator is a carbonyl compound, preferably an ester, in particular a substituted phenol ester.
Claim 17
Dependent Claim
19 words
A method as claimed in claim 16 characterized in that the ester is an alkanoyloxyglycoylbenzene or an alkanoyloxyglycoylphenyl sulfonate.
References Cited (Backward Citations)
No citation records indexed.
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