EP0140648A2
Expired / Lapsed
EP
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Hydrogen peroxide compositions
Assignee: Solvay Interox Ltd
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Filing: 1984-10-17
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Granted: —
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Expires: 2004-10-17
Abstract
Abstract The effectiveness of hydrogen peroxide for bleaching and disinfecting at ambient to hand hot temperatures can be enhanced by reaction with a peracid generator (activator). The present invention provides emulsions of enol ester activators in aqueous acidic solutions of hydrogen peroxide containing a water soluble emulsifier in at least 1 part per part by weight of activator. Preferably sufficient emulsifier mixture thereof is present to enable the resultant emulsion to be clear demonstrating the presence of thermodynamically stable micellar structures. In preferred compositions, the activator is selected from vinyl or isopropenyl or but-1-enyl or cyclohex-1-enyl acetate heptanoate, octanoate or benzoate and divinyl adipate or phthalate, and 1,5-diacetoxypenta-1,4-diene. The compositions can be used as such or upon dilution with aqueous media and in conjunction with detergent compositions, and for cleaning and desinfecting absorbent or non-absorbent materials.
Inventors
- 👤 William Ronald Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 17:08
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/391; C11D3/3947
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
204 words
A composition suitable for use in bleaching or disinfection comprising an emulsion of a peroxyacid generator comprising an enol ester having either of the following general formulae:- or in which each of R a and R b represent hydrogen or a C 1 to C 5 alkyl radical or a C 2 to C 4 alkenyl radical or a phenyl radical, R a and R b being the same or different or combining together to form a carbocyclic di-radical, R C represents hydrogen or a C 1 to C 5 alkyl radical or a phenyl radical or is combined with R a or R b and the olefin group to form a carbocyclic radical, R e represents hydrogen or a C 1 to C 8 alkyl radical or a phenyl radical, n is 1 or 2, when n = 1, R d represents hydrogen or a C 1 to C 8 alkyl radical or a phenyl radical, when n = 2, R d represents a C 2 to C 10 alkylene di-radical or a phenylene di-radical, and m is an integer from 0 to 8, together with at least its own weight of a water-soluble emulsifier in an aqueous acidic solution of hydrogen peroxide.
Claim 2
Dependent Claim
204 words
A composition suitable for use in bleaching or disinfection comprising an emulsion of a peroxyacid generator comprising an enol ester having either of the following general formulae:- or in which each of R a and R b represent hydrogen or a C 1 to C 5 alkyl radical or a C 2 to C 4 alkenyl radical or a phenyl radical, R a and R b being the same or different or combining together to form a carbocyclic di-radical, R C represents hydrogen or a C 1 to C 5 alkyl radical or a phenyl radical or is combined with R a or R b and the olefin group to form a carbocyclic radical, R e represents hydrogen or a C 1 to C 8 alkyl radical or a phenyl radical, n is 1 or 2, when n = 1, R d represents hydrogen or a C 1 to C 8 alkyl radical or a phenyl radical, when n = 2, R d represents a C 2 to C 10 alkylene di-radical or a phenylene di-radical, and m is an integer from 0 to 8, together with at least its own weight of a water-soluble emulsifier in an aqueous acidic solution of hydrogen peroxide.
Claim 3
Dependent Claim
24 words
A composition according to claim 1 in which hydrogen peroxide is present in a mole ratio to the enol ester of at least 1:1.
Claim 4
Dependent Claim
24 words
A composition according to claim 1 or 2 in which the concentration of hydrogen peroxide is from 1 to 8% w/w in the composition.
Claim 5
Dependent Claim
18 words
A composition according to any preceding claim which contains sufficient emulsifier for the emulsion to be visually clear.
Claim 6
Dependent Claim
33 words
A composition according to any preceding claim in which the proportion of activator is from 1 to 15% w/w and the proportion of emulsifier is selected in the range of 5 to 30%.
Claim 7
Dependent Claim
43 words
A composition according to any preceding claim in which the enol ester activator of formula (i) or (ii) satisfies the condition that R a is a hydrogen, methyl or ethyl radical and R b and R C are each hydrogen or methyl radicals.
Claim 8
Dependent Claim
55 words
A composition according to any preceding claim in which the enol ester activator of formula (i) or (ii) respectively satisfies the condition that R d is an ethyl, methyl, pentyl, hexyl, 2,4,4-trimethyl pentyl, 2-ethyl pentyl heptyl, phenyl, phenylene or C 2 -C 4 polymethylene radical or R e is a methyl, ethyl or phenyl radical.
Claim 9
Dependent Claim
26 words
A composition according to any preceding claim in which the enol ester activator of formula (ii) satisfies the condition that m is 0, 1 or 2..
Claim 10
Dependent Claim
47 words
A composition according to any preceding claim in which the activator is vinyl or isopropenyl or butenyl acetate, heptanoate or octanoate, divinyl glutarate or adipate or azelate or sebacate, vinyl or isopropenyl benzoate, divinyl phthalate or iso- or tere- phthalate, cyclohexenyl acetate, glutardienol diacetate or sucindienol diacetate.
Claim 11
Dependent Claim
31 words
A composition according to any preceding claim in which the emulsifier is selected from water-soluble alcohol ethoxylates, alkyl phenol ethoxylates, alcohol sulphates, linear alkyl benzene sulphonates and/or alkyl esters of sulphosuccinates.
Claim 12
Dependent Claim
31 words
A composition according to any preceding claim which contains an aliphatic alcohol having a C 4 -C 8 carbon chain in a weight ratio to the emulsifier of up to 2:1.
Claim 13
Dependent Claim
12 words
A composition according to claim 11 in which the emulsifier is anionic.
Claim 14
Dependent Claim
22 words
Use of a composition according to any preceding claim for washing or disinfection, optionally after dilution and optionally with a detergent composition.
References Cited (Backward Citations)
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