US4329245A
Expired / Lapsed
US
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Bleaching detergent compositions
Assignee: Lever Brothers Co
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Filing: 1981-03-19
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Granted: 1982-05-11
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Expires: 2001-03-19
Abstract
Abstract A bleaching detergent composition comprising a nonionic detergent active compound, an inorganic persalt e.g. sodium perborate, an organic peracid precursor and a fluorescent agent, is stabilized by the use of a "sacrificial" ingredient. The "sacrificial" ingredient is an organic compound having a relative reactivity towards peracid and hydrogen peroxide of the order of 50:1 and a solubility in nonionic detergent active compounds at 25° C. of at least 0.15 grams/liter, e.g. alkanolamines, and is used in relatively small amounts, generally from 0.1 to 5.0% by weight.
Inventors
- 👤 Philip R. N. Eymond
- 👤 Robert M. Butterworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3937; C11D3/394; C11D3/40; C11D3/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
A bleaching detergent composition comprising: (a) 3 to 40% by weight of a detergent active compound comprising a nonionic detergent; (b) 3 to 35% by weight of an inorganic persalt; (c) 0.1 to 15% by weight of an organic peracid precursor, which can react with the persalt to form organic peracids; (d) 0.02 to 2% by weight of a fluorescent agent selected from the group consisting of: (i) derivatives of 4,4'-di(sym-triazinylamino)-stilbene-2,2'-disulphonic acid and their salts; (ii) derivatives of diphenyl-distyryl compounds and their salts; (iii) derivatives of 4,4'-di(triazolyl)-stilbene-2,2'-disulphonic acid and their salts; and (iv) derivatives of diphenyl-2-pyrazoline; and (e) 0.1 to 5.0% by weight of an alkanolamine, in which the alkanol moiety is a lower alcohol having 2 to 4 carbon atoms.
Claim 2
Dependent Claim
121 words
A bleaching detergent composition comprising: (a) 3 to 40% by weight of a detergent active compound comprising a nonionic detergent; (b) 3 to 35% by weight of an inorganic persalt; (c) 0.1 to 15% by weight of an organic peracid precursor, which can react with the persalt to form organic peracids; (d) 0.02 to 2% by weight of a fluorescent agent selected from the group consisting of: (i) derivatives of 4,4'-di(sym-triazinylamino)-stilbene-2,2'-disulphonic acid and their salts; (ii) derivatives of diphenyl-distyryl compounds and their salts; (iii) derivatives of 4,4'-di(triazolyl)-stilbene-2,2'-disulphonic acid and their salts; and (iv) derivatives of diphenyl-2-pyrazoline; and (e) 0.1 to 5.0% by weight of an alkanolamine, in which the alkanol moiety is a lower alcohol having 2 to 4 carbon atoms.
Claim 3
Dependent Claim
26 words
A bleaching detergent composition according to claim 1, wherein said "sacrificial" ingredient is present in an amount of 0.5 to 2.5% by weight of the composition.
Claim 4
Dependent Claim
112 words
A bleaching detergent composition comprising: (a) 3 to 40% by weight of a detergent active compound comprising a nonionic detergent; (b) 3 to 35% by weight of an inorganic persalt; (c) 0.1 to 15% by weight of an organic peracid precursor, which can react with the persalt to form organic peracids; (d) 0.02 to 2% by weight of a fluorescent agent selected from the group consisting of: (i) derivatives of 4,4'-di(sym-triazinylamino)-stilbene-2,2'-disulphonic acid and their salts; (ii) derivatives of diphenyl-distyryl compounds and their salts; (iii) derivatives of 4,4'-di(triazolyl)-stilbene-2,2'-disulphonic acid and their salts; and (iv) derivatives of diphenyl-2-pyrazoline; and (e) 0.1 to 2.5% by weight of nitrilotriacetic acid or an alkali metal salt thereof.
Claim 5
Dependent Claim
112 words
A bleaching detergent composition comprising: (a) 3 to 40% by weight of a detergent active compound comprising a nonionic detergent; (b) 3 to 35% by weight of an inorganic persalt; (c) 0.1 to 15% by weight of an organic peracid precursor, which can react with the persalt to form organic peracids; (d) 0.02 to 2% by weight of a fluorescent agent selected from the group consisting of: (i) derivatives of 4,4'-di(sym-triazinylamino)-stilbene-2,2'-disulphonic acid and their salts; (ii) derivatives of diphenyl-distyryl compounds and their salts; (iii) derivatives of 4,4'-di(triazolyl)-stilbene-2,2'-disulphonic acid and their salts; and (iv) derivatives of diphenyl-2-pyrazoline; and (e) 0.1 to 2.5% by weight of nitrilotriacetic acid or an alkali metal salt thereof.
Claim 6
Dependent Claim
26 words
A bleaching detergent composition according to claim 1 or 3, wherein the nonionic detergent comprises at least 20% by weight of the total detergent active content.
Claim 7
Dependent Claim
26 words
A bleaching detergent composition according to claim 1 or 3, wherein the nonionic detergent comprises at least 50% by weight of the total detergent active content.
Claim 8
Dependent Claim
17 words
A bleaching detergent composition according to claim 1 or 3, wherein the inorganic persalt is sodium perborate.
Claim 9
Dependent Claim
18 words
A bleaching detergent composition according to claim 1 or 3, wherein the organic peracid precursor is N,N,N',N'-tetraacetylethylene diamine.
References Cited (Backward Citations)
US3940340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |