EP0124968A1
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EP
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Peroxygen compounds, a process for their manufacture, and processes and compositions for their use in bleaching, disinfecting, sanitising or washing
Assignee: Solvay Interox Ltd
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Filing: 1984-03-08
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Granted: —
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Expires: 2004-03-08
Abstract
Abstract Increased energy costs have stimulated a demand for peroxygen compounds that are effective at ambient to hand-hot temperatures, but peroxyacids and acyl peroxides tend to suffer from one or more of poor thermal stability, or sensitivity to impact or moisture, thereby rendering their manufacture or storage hazardous, or from poor solubility. The instant invention provides salts of the formula (in anhydrous form): <IMAGE> in which M represents potassium and n=1 or M represents magnesium and n=2. The solids can be incorporated in low temperature bleaching compositions, in washing compositions, in sanitizing compositions or in disinfection/sterilisation compositions.
Inventors
- 👤 William Ronald Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:22
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3945; A; A01; A01N; A01N41/00; A01N41/02; A01N41/04; C07; C07C; C07C409/00; C07C409/42; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
30 words
In solid form, salts, expressed in anhydrous form, having the general formula:- in which M represents potassium and n equals 1 or .M . represents magnesium and n equals 2.
Claim 2
Dependent Claim
30 words
In solid form, salts, expressed in anhydrous form, having the general formula:- in which M represents potassium and n equals 1 or .M . represents magnesium and n equals 2.
Claim 3
Dependent Claim
100 words
A process for the manufacture of the monopotassium salt or monomagnesium salt of 4-sulphoperbenzoic acid comprising the step of reacting a suspension of the corresponding salt of 4-sulphobenzoic acid in a strong acid with concentrated hydrogen peroxide until at least some of the carboxylic acid groups have been . peroxidised at a temperature selected in the range of ambient to 60°C, subsequently cooling the reaction mixture, and/or, augmenting the concentration of metal ions in solution by introduction thereinto of a soluble salt thereof to the extent necessary for a precipitate to form, and separating the precipitate from its mother liquor.
Claim 4
Dependent Claim
100 words
A process for the manufacture of the monopotassium salt or monomagnesium salt of 4-sulphoperbenzoic acid comprising the step of reacting a suspension of the corresponding salt of 4-sulphobenzoic acid in a strong acid with concentrated hydrogen peroxide until at least some of the carboxylic acid groups have been . peroxidised at a temperature selected in the range of ambient to 60°C, subsequently cooling the reaction mixture, and/or, augmenting the concentration of metal ions in solution by introduction thereinto of a soluble salt thereof to the extent necessary for a precipitate to form, and separating the precipitate from its mother liquor.
Claim 5
Dependent Claim
29 words
A process according to claim 2 in which the mole ratio of hydrogen peroxide to the monosalt of 4-sulphobenzoic acid is selected in the range of 1.2:1 to 5:1.
Claim 6
Dependent Claim
21 words
A process according to claim 2 or 3 in which the reaction is effected at a temperature of 30°C to 45°C.
Claim 7
Dependent Claim
25 words
A process according to any of claims 2, 3 or 4 in which the reaction period/residence time is from half an hour to four hours.
Claim 8
Dependent Claim
21 words
A process according to any of claims 2 to 5 employing hydrogen peroxide having a concentration of at least 70% w/w.
Claim 9
Dependent Claim
21 words
A process according to any of claims 2 to 6 in which the reaction mixture is cooled by at least 15°C.
Claim 10
Dependent Claim
26 words
A process according to any of claims 2 to 7 in which the soluble salt introduced is the corresponding potassium or magnesium sulphate or nitrate salt.
Claim 11
Dependent Claim
23 words
A process according to any of claims 2 to 8 in which the soluble salt is introduced as a substantially saturated aqueous solution.
Claim 12
Dependent Claim
42 words
A desensitised peroxygen composition comprising not more than 70% w/w potassium 4-sulphoperbenzoic acid, hereinafter KSPB or 50% w/w magnesium 4-sulphoperbenzoic acid, hereinafter MSPB, each according to claim 1, and the balance being a solid diluent in intimate contact with the peroxygen compound.
Claim 13
Dependent Claim
35 words
A bleach composition comprising a buffering agent or pH regulator and KSPB or MSPB, preferably in such relative amounts that a 1% solution of the composition in water has a pH of 7 to 8.5.
Claim 14
Dependent Claim
35 words
A bleach composition comprising a buffering agent or pH regulator and KSPB or MSPB, preferably in such relative amounts that a 1% solution of the composition in water has a pH of 7 to 8.5.
Claim 15
Dependent Claim
22 words
A washing composition comprising a surfactant and optionally a builder and/or a persalt, and containing at least 0.5% w/w KSPB and/or MSPB.
Claim 16
Dependent Claim
22 words
A washing composition comprising a surfactant and optionally a builder and/or a persalt, and containing at least 0.5% w/w KSPB and/or MSPB.
Claim 17
Dependent Claim
34 words
A washing composition according to claim 12 containing at least 1% surfactant, at least 1% builder, up to 40% processing acid, up to 20% detergent auxiliary agents and 0.5 to 10% KSPB and/or MSPB.
Claim 18
Dependent Claim
29 words
A sanitising composition comprising up to 70% alkali metal chloride or bromide, up to 40% KSPB or MSPB and optionally up to 50% surfactant and up to 20% builder.
Claim 19
Dependent Claim
29 words
A sanitising composition comprising up to 70% alkali metal chloride or bromide, up to 40% KSPB or MSPB and optionally up to 50% surfactant and up to 20% builder.
Claim 20
Dependent Claim
66 words
A composition according to any one of claims 10 to 14 containing from 0.1 to 5% w/w of a complexing agent satisfying the general formula:- in which X represents a carboxylic acid or a phosphonic acid group or an alkali or alkaline earth metal salt thereof, such as sodium, potassium, calcium or magnesium salt or an ammonium salt and a represents either 0, 1 or 2.
Claim 21
Dependent Claim
35 words
A process or composition for washing and/or bleaching and/or sanitising and/or disinfecting, as the case may be, employing KSPB and/or MSPB and substantially as described herein with respect to any feature or combination of features.
Claim 22
Dependent Claim
35 words
A process or composition for washing and/or bleaching and/or sanitising and/or disinfecting, as the case may be, employing KSPB and/or MSPB and substantially as described herein with respect to any feature or combination of features.
References Cited (Backward Citations)
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