EP0453003A2
Expired / Lapsed
EP
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Bleach catalysts and compositions containing same
Assignee: Unilever PLC
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Filing: 1991-02-28
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Granted: —
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Expires: 2011-02-28
Abstract
Abstract Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing the catalysts are reported. The catalysts are sulfonimines. Substrates such as fabrics may be bleached in an aqueous solution containing the sulfonimine and a peroxygen compound.
Inventors
- 👤 David John Batal
- 👤 Stephen Alan Madison
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:19
CPC Classifications
C; C11; C11D; C11D7/00; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/392
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
143 words
A detergent-bleaching composition comprising: ( i) from about 1 to about 60% by weight of a peroxygen compound; ( ii) from about 0.05 to about 10% of an oxygen transfer agent whose structure is: R¹R²C=NSO₂R³ wherein: R¹ may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, phenyl, aryl, heterocyclic ring, alkyl and cycloalkyl radicals; R² may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, phenyl, aryl, heterocyclic ring, alkyl, cycloalkyl, R¹C=NSO₂R³, nitro, halo, cyano, alkoxy, keto, carboxylic, and carboalkoxy radicals; R³ may be a substituted or unsubstituted radical selected from the group consisting of phenyl, aryl, heterocyclic ring, alkyl, cycloalkyl, nitro, halo and cyano radicals; R¹ with R² and R² with R³ may respectively together form a cycloalkyl, heterocyclic, and aromatic ring system; and (iii) from about 0.5 to 50% of a surfactant.
Claim 2
Dependent Claim
17 words
A composition according to Claim 1, further comprising from about 1 to 80% of a detergent builder.
Claim 3
Dependent Claim
29 words
A composition according to Claim 1, further comprising an effective amount for cleaning of an enzyme selected from the group consisting of proteases, cellulases, lipases, amylases and mixtures thereof.
Claim 4
Dependent Claim
37 words
A composition according to Claims 1-3 wherein the peroxygen compound is present in an amount from about 1.5 to 25% and the oxygen transfer agent is present in an amount from about 0.2 to 5% by weight.
Claim 5
Dependent Claim
27 words
A composition according to Claims 1-4 wherein the peroxygen compound is an inorganic material selected from the group consisting of perborate, percarbonate, perphosphate, persilicate and monopersulphate salts.
Claim 6
Dependent Claim
14 words
A composition according to Claims 1-4 wherein the peroxygen compound is an organic peroxyacid.
Claim 7
Dependent Claim
22 words
A composition according to Claims 1-6 wherein at least one of R¹, R² and R³ is substituted with a water-solubilizing functional group.
Claim 8
Dependent Claim
31 words
A composition according to Claim 7 wherein the water-solubilizing functional group is selected from the group consisting of carboxylic acid, phosphoric acid, phosphonic acid, sulfuric acid, sulphonic acid and salts thereof.
Claim 9
Dependent Claim
48 words
A composition according to Claim 1 wherein said substituent on R¹, R² and R³ is a functional group selected from the group consisting of nitro, halo, cyano, C₁-C₂₀ alkyl, amino, aminoalkyl, thioalkyl, sulfoxyalkyl, carboxyester, hydroxy, C₁-C₂₀ alkoxy, polyalkoxy, C₁-C₄₀ quaternary di- or tri-alkylammonium functional units and mixtures thereof.
Claim 10
Dependent Claim
16 words
A composition according to Claim 9 wherein said quaternary alkylammonium functional unit is a cholyl group.
Claim 11
Dependent Claim
39 words
A composition according to Claims 1-10 wherein the oxygen transfer agent is selected from the group consisting of N-(4-carboxybenzylidene)-4-chlorobenzene sulfonamide, N-(4-carboxybenzylidene)-benzene sulfonamide, N-(4-chlorobenzylidene)-4-carboxybenzaldehyde, N-benzylidene-4-carboxybenzene sulfonamide, N-(4-carboxybenzylidene)-4-carboxy benzenesulfonamide, N-(4-carboxybenzylidene)-3-nitrobenzenesulfonamide, N-(4-cyanobenzylidene)-4-carboxybenzenesulfonamide, N-(4-methoxybenzylidene)-4-carboxybenzenesulfonamide, N-(3-hydroxybenzylidene)-4-chlorobenzenesulfonamide, bis-N-terephthalidene-4-carboxybenzenesulfonamide, 3-methyl-1,2-benzisothiazole-1,1-dioxide, N-Benzylidenebenzene sulfonamide, 1,2-benzisothiazole-1,1-dioxide and N-(3-pyridinylmethylene) benzenesulfonamide.
Claim 12
Dependent Claim
118 words
A compound whose structure is R¹R²C=NSO₂R³ wherein: R¹ may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, phenyl, aryl, heterocyclic ring, alkyl, and cycloalkyl radicals; R² may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, phenyl, aryl, heterocyclic ring, alkyl, cycloalkyl, R¹C=NSO₂R³, nitro, halo, cyano, alkoxy, keto, carboxylic and carboalkoxy radicals; R³ may be a substituted or unsubstituted radical selected from the group consisting of phenyl, aryl, heterocyclic ring, alkyl, cycloalkyl, nitro, halo, and cyano radicals; and R¹ with R² and R² with R³ may respectively together form a cycloalkyl, heterocyclic and aromatic ring system; and wherein at least one of R¹, R², R³ incorporates a water-solubilizing group.
Claim 13
Dependent Claim
30 words
A compound according to Claim 12 wherein said water-solubilizing group is selected from the group consisting of carboxylic acid, phosphoric acid, phosphonic acid, sulfuric acid, sulfonic acid and salts thereof.
Claim 14
Dependent Claim
48 words
A compound according to Claims 12-13 wherein said substitution of R¹, R², R³ is a functional unit selected from the group consisting of nitro, halo, cyano, C₁-C₂₀ alkyl, amino, aminoalkyl, thioalkyl, sulfoxyalkyl, carboxyester, hydroxy, C₁-C₂₀ alkoxy, polyalkoxy, C₁-C₄₀ quaternary di- or tri-alkyl ammonium functional units and mixtures thereof.
Claim 15
Dependent Claim
34 words
A compound according to Claims 12-14 wherein the heterocyclic ring may be a substituted or unsubstituted radical selected from the group consisting of pyridine, pyrrole, morpholine, midazole, triazole, tetrazole, pyrrolidine, piperidine and piperazine radicals.
Claim 16
Dependent Claim
12 words
A compound according to Claim 15 wherein the heterocyclic ring is pyridine.
Claim 17
Dependent Claim
24 words
A compound according to Claims 12-16 selected from N-(4-carboxybenzylidene)-4-chlorobenzene sulfonamide, N-(4-carboxybenzylidene)benzenesulfonamide, N-(4-chlorobenzylidene)-4-carboxybenzenesulfonamide, N-benzylidene-4-carboxybenzenesulfonamide, N-(4-carboxybenzylidene)-4-carboxybenzenesulfonamide, N-(4-carboxybenzylidene)-3-nitrobenzenesulfonamide. N-(4-cyanobenzylidene)-4-carboxybenzenesulfonamide, N-(4-methoxybenzylidene)-4-carboxybenzenesulfonamide, N-(3-hydroxybenzylidene)-4-chlorobenzenesulfonamide, bis-N-terephthalidene-4-carboxybenzenesulfonamide, N-(3-pyridinylmethylene)-4-chlorobenzenesulfonamide, N-(3-pyridinylmethylene)benzenesulfonamide, N-(2-pyridinylmethylene)benzenesulfonamide and N-(4-pyridinylmethylene)benzenesulfonamide.
References Cited (Backward Citations)
No citation records indexed.
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