Patent EP0332294A2 successfully refreshed from Google Patents.
EP0332294A2
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EP
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Bleach activators in detergent compositions
Assignee: Warwick International Group Ltd
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Filing: 1989-02-09
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Granted: —
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Expires: 2009-02-09
Abstract
Abstract The present invention relates to a detergent composition in aqueous solution comprising: (i) a surfactant selected from anionic, nonionic, zwitterionic and cationic surfactants and mixtures thereof, (ii) a precursor compound capable of giving a rise to a peroxygen compound in the presence of water, (iii) a bleach activator capable of enhancing the bleaching activity of the peroxygen compound so formed, (iv) a suds suppressing agent and (v) a detergent builder, characterised in that the bleach activator comprises one or more cyclic tertiary nitrogen compounds of a defined generic formula, said activator being at least partially soluble in water. The claimed bleach activators show bleaching activity at relatively low temperatures.
Inventors
- 👤 Stephen Robert Hodge
- 👤 Andrew Pearce
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 21:10
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C07; C07D; C07D265/00; C07D265/04; C07D265/12; C07D265/14; C07D265/20; C07D265/22; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/392; C11D3/3947
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
137 words
A detergent composition in aqueous solution comprising (i) surfactant selected from anionic, nonionic, zwitterionic and cationic surfactants and mixtures thereof, (ii) a precursor compound capable of giving rise to a peroxygen compound in the presence of water, (iii) a bleach activator capable of enhancing the bleaching activity of the peroxygen compound so formed, (iv) a suds suppressing agent and (v) a detergent builder, characterised in that the bleach activator comprises one or more cyclic tertiary nitrogen compounds of the generic formula wherein Q is an organic divalent grouping such that Q and N together with the carbonyl and oxygen functions in the compound form one or more cyclic structures and R is H an alkyl, alkaryl, aryl, aralkyl, alkoxy haloalkyl, amino alkyl, amino, carboxylic or a carbonyl-containing function, said activator being at least partially soluble in water.
Claim 2
Dependent Claim
137 words
A detergent composition in aqueous solution comprising (i) surfactant selected from anionic, nonionic, zwitterionic and cationic surfactants and mixtures thereof, (ii) a precursor compound capable of giving rise to a peroxygen compound in the presence of water, (iii) a bleach activator capable of enhancing the bleaching activity of the peroxygen compound so formed, (iv) a suds suppressing agent and (v) a detergent builder, characterised in that the bleach activator comprises one or more cyclic tertiary nitrogen compounds of the generic formula wherein Q is an organic divalent grouping such that Q and N together with the carbonyl and oxygen functions in the compound form one or more cyclic structures and R is H an alkyl, alkaryl, aryl, aralkyl, alkoxy haloalkyl, amino alkyl, amino, carboxylic or a carbonyl-containing function, said activator being at least partially soluble in water.
Claim 3
Dependent Claim
25 words
A detergent composition according to claim 1 wherein the bleach activator has the generic formula wherein R has the same significance as in claim 1.
Claim 4
Dependent Claim
18 words
A detergent composition according to claim 2 wherein the bleach activator is such that R=CH₃ thereby representing 2-methyl-(4H)3,1-benzoxazin-4-one.
Claim 5
Dependent Claim
35 words
A detergent composition according to claim 2 wherein the bleach activator is such that R is selected from a dialkylamino group, an acyl group, an alkoxy group, a haloalkyl group and a dialkyl ether group.
Claim 6
Dependent Claim
33 words
A detergent composition according to claim 4 wherein R is selected from a dimethyl amino group, an acetyl group, an ethoxy group, a chloromethyl group, a dichloromethyl group and a dimethyl ether group.
Claim 7
Dependent Claim
61 words
A detergent composition according to claim 1 wherein the bleach activator has the generic formula wherein R has the same significance as in claim 1 and R₁, R₂, R₃ and R₄ are the same or different nuclear substituents selected from H, halogen, alkyl, alkenyl, aryl, hydroxyl, alkoxyl, amino, alkylamino, -COOR₅ (where R₅ is H or an alkyl group), and carbonyl functions.
Claim 8
Dependent Claim
48 words
A detergent composition according to claim 6 wherein R₁, and R₄ are both H, and (a) R₂=acetoxy and R₃=H; (b) R₂=OH and R₃=H; (c) R₂=R₃=alkoxy; (d) R₂=H and R₃=halogen or a haloalkyl group; (e) R₂=halogen or haloalkyl group and R₃= H; or (f) R₂=H and R₃=a carboxyl group.
Claim 9
Dependent Claim
22 words
A detergent composition according to claim 7 wherein R₁ and R₄ are both H, and (a) R₂=R₃=methoxy; or (b) R₂=H and R₃=chlorine
Claim 10
Dependent Claim
26 words
A detergent composition according to claim 6 wherein R₃=H, and any one of R₁, R₂ and R₄ is a methyl group the other two being H.
Claim 11
Dependent Claim
33 words
A detergent composition according to claim 1 wherein the bleach activator has the generic formula wherein X is H or an organic monovalent group and R has the samesignificance as in claim 1.
Claim 12
Dependent Claim
60 words
A detergent composition according to claim 1 wherein the bleach activator has the generic formula wherein R has the same significance as in claim 1, R₆ and R₇ are the same or different groups and are any one of the groups denoted by the substituents R₁ to R₄ in claims 6-8 and n has a value from 1 to 3.
Claim 13
Dependent Claim
42 words
A detergent composition according to claim 1 wherein the bleach activator has the generic formula wherein R₈ and R₉ are the same or different groups and denote any one of the substituents signified by the groups R₁ to R₄ in claims 6-8.
Claim 14
Dependent Claim
33 words
A detergent composition according to claim 12 wherein, R₈ and R₉ together with the hydrocarbyl carbon atoms bridging the nitrogen and carbonyl functions represent a pyrazole, an imidazole, pyridine or a pyridazine ring.
Claim 15
Dependent Claim
24 words
A detergent composition according to claim 1 wherein the bleach activator has the formula wherein R has the same significance as in claim 1.
Claim 16
Dependent Claim
29 words
A detergent composition according to any one of the preceding claims wherein the precursor compound (ii) acts as a hydrogen peroxide source in the presence of a bleach activator.
Claim 17
Dependent Claim
28 words
A detergent composition according to claim 15 wherein the precursor compound (ii) is selected from sodium perborate mono or tetrahydrate, sodium percarbonate, sodium persilicate and the clathrate 4Na₂SO₄:H₂O₂:NaCl.
Claim 18
Dependent Claim
27 words
A detergent compound according to claim 15 or 16 wherein the precursor compound (ii) is present in an amount from 1 to 40%w/w of the total composition.
Claim 19
Dependent Claim
32 words
A detergent composition according to any one of the preceding claims 15-17, wherein the molar ratio of hydrogen peroxide generated from the precursor compound to bleach activator therein is greater than 1.5:1.
Claim 20
Dependent Claim
26 words
A detergent composition according to any one of the preceding claims wherein the amount of surfactant (i) ranges from 1 to 70%w/w of the total composition.
Claim 21
Dependent Claim
31 words
A detergent composition according to any one of the preceding claims wherein the amount of suds suppressing agent (iv) in the formulation ranges from 0.01 to 5%w/w of the total composition.
Claim 22
Dependent Claim
32 words
A detergent composition according to any one of the preceding claims wherein the detergent builder (v) is a salt which is present in amount of up to 90%w/w of the total composition.
References Cited (Backward Citations)
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