US4235752A
Expired / Lapsed
US
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Detergent compositions containing alkyl sulfate isomers
Assignee: Lever Brothers Co
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Filing: 1979-02-09
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Granted: 1980-11-25
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Expires: 1999-02-09
Abstract
Abstract Detergent compositions useful more particularly, but not exclusively, for dishwashing, comprising as active detergent ingredient a C 10 -C 18 secondary alkyl sulphate, said secondary alkyl sulphate containing up to 50% of 2/3 sulphate isomers and at least 40% of effective isomers selected from the group consisting of C 14 -2 , C 15 -2/3/4/5/6 , C 16 -3/4/5/6/7 and C 17 -7/8/9 isomers, and mixtures thereof. Preferred compositions having improved dishwashing properties comprise further a co-surfactant and an alkylbenzene sulphonate.
Inventors
- 👤 Brian Rossall
- 👤 Jeffrey D. Hampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:02
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/14; C11D1/146
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
A detergent composition comprising as active detergent component a C 10 -C 18 secondary alkyl sulfate, said secondary alkyl sulfate containing up to 50% of 2- and 3-sulfate isomers and consisting of at least 40% of effective isomers selected from the group consisting of C 14 -2 , C 15 -2/3/4/5/6 , C 16 -3/4/5/6/7 and C 17 -7/8/9 sulfate isomers and mixtures thereof.
Claim 2
Dependent Claim
64 words
A detergent composition comprising as active detergent component a C 10 -C 18 secondary alkyl sulfate, said secondary alkyl sulfate containing up to 50% of 2- and 3-sulfate isomers and consisting of at least 40% of effective isomers selected from the group consisting of C 14 -2 , C 15 -2/3/4/5/6 , C 16 -3/4/5/6/7 and C 17 -7/8/9 sulfate isomers and mixtures thereof.
Claim 3
Dependent Claim
20 words
A detergent composition according to claim 1, wherein said secondary alkyl sulphate contains at least 60% of said effective isomers.
Claim 4
Dependent Claim
26 words
A detergent composition according to claim 1, wherein said effective isomers are selected from the group consisting of C 15 -2/3/4/5 and C 16 -4/5/6 isomers.
Claim 5
Dependent Claim
75 words
A liquid detergent composition comprising 5-60% by weight of a C 10 -C 18 secondary alkyl sulfate, and optionally an alkylbenzenesulfonate in a ratio of 80:20 to 40:60, said secondary alkyl sulfate containing up to 50% of 2-and 3-sulfate isomers and consisting of at least 40% of effective isomers selected from the group consisting of C 14 -2 , C 15 -2/3/4/5/6 , C 16 -3/4/5/6/7 and C 17 -7/8/9 sulfate isomers and mixtures thereof.
Claim 6
Dependent Claim
75 words
A liquid detergent composition comprising 5-60% by weight of a C 10 -C 18 secondary alkyl sulfate, and optionally an alkylbenzenesulfonate in a ratio of 80:20 to 40:60, said secondary alkyl sulfate containing up to 50% of 2-and 3-sulfate isomers and consisting of at least 40% of effective isomers selected from the group consisting of C 14 -2 , C 15 -2/3/4/5/6 , C 16 -3/4/5/6/7 and C 17 -7/8/9 sulfate isomers and mixtures thereof.
Claim 7
Dependent Claim
21 words
A liquid detergent composition according to claim 4, wherein said secondary alkyl sulphate contains at least 60% of said effective isomers.
Claim 8
Dependent Claim
27 words
A liquid detergent composition according to claim 4, wherein said effective isomers are selected from the group consisting of C 15 -2/3/4/5 and C 16 -4/5/6 isomers.
Claim 9
Dependent Claim
117 words
A liquid detergent composition according to claim 4, which further comprises a water-soluble co-surfactant selected from the group consisting of (1) a nonionic condensation product obtained by condensing from 5-30 moles of an ethylene oxide or propylene oxide with one mole of an organic compound, aliphatic or aromatic in nature, having 8-24 carbon atoms and at least one reactive hydrogen atom; (2) a C 8 -C 20 alkyl sulphobetaine; (3) an amine oxide containing one long-chain alkyl moiety of from 10-28 carbon atoms and two moieties which can be either alkyl radicals or hydroxyalkyl radicals having from 1-4 carbon atoms; (4) a C 8 -C 20 alkyl polyethoxy sulphate having 1-25 ethylene oxide groups, and mixtures thereof.
Claim 10
Dependent Claim
16 words
A liquid detergent composition according to claim 7, wherein said ratio is from 10:1 to 1:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |