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US4440665A
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Concentrated aqueous surfactant compositions
Assignee: Solvay Solutions UK Ltd
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Filing: 1979-05-25
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Granted: 1984-04-03
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Expires: 1999-05-25
Abstract
Abstract Aqueous surfactant mixtures comprising a first amphoteric surfactant and at least one non-ionic surfactant and/or at least one amphoteric surfactant non-homologous with the first amphoteric surfactant, are obtained at a concentration substantially higher than previously obtainable by preparing them in the presence of sufficient water to form a "G" phase.
Inventors
- 👤 Douglas E. Mather
- 👤 Edward T. Messenger
- 👤 Brinley M. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:31
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/835; C11D1/02; C11D1/37; C11D1/38; C11D1/645; C11D1/65; C11D1/652; C11D1/83; C11D1/88; C11D1/94; C11D17/00; C11D17/0008; C11D17/0026; C11D1/04; C11D1/12; C11D1/123; C11D1/14; C11D1/146; C11D1/22; C11D1/28; C11D1/29; C11D1/34; C11D1/345; C11D1/52; C11D1/523; C11D1/528; C11D1/75; C11D1/90; Y; Y10; Y10S; Y10S516/00; Y10S516/90; Y10S516/905; Y10S516/914
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
108 words
An aqueous surfactant composition consisting essentially of at least 20% but not more than 55% by weight of water, and an active mixture consisting of at least 5% by weight of said mixture, of a first, amphoteric surfactant with at least 5% by weight of said mixture of at least 1 surfactant selected from the group consisting of nonionic surfactants and amphoteric surfactants non-homologous with said first amphoteric surfactant, said mixture being capable of forming a "G" phase in the presence of water and the concentration of active ingredient in said composition corresponding to that at which the composition can exist, at least predominantly in the "G" phase.
Claim 2
Dependent Claim
108 words
An aqueous surfactant composition consisting essentially of at least 20% but not more than 55% by weight of water, and an active mixture consisting of at least 5% by weight of said mixture, of a first, amphoteric surfactant with at least 5% by weight of said mixture of at least 1 surfactant selected from the group consisting of nonionic surfactants and amphoteric surfactants non-homologous with said first amphoteric surfactant, said mixture being capable of forming a "G" phase in the presence of water and the concentration of active ingredient in said composition corresponding to that at which the composition can exist, at least predominantly in the "G" phase.
Claim 3
Dependent Claim
54 words
A composition according to claim 1 having n active components which are each capable of forming a "G" phase with water at concentrations respectively of g 1 . . . g n and which are present in the composition respectively at concentrations of about c 1 . . . c n such that ##EQU2##
Claim 4
Dependent Claim
52 words
A composition according to either of claims 1 and 2 wherein the graph of viscosity against the concentration of active mixture in water exhibits a minimum value corresponding to the formation of the "G" phase and wherein the proportion of active mixture present in the composition corresponds to about the minimum value.
Claim 5
Dependent Claim
28 words
A composition according to claim 1 wherein at least 2 different non-homologous active components which are present in proportions of more than 10% by weight of the composition.
Claim 6
Dependent Claim
24 words
A composition according to claim 1 containing less than 5% by weight of non-surfactant organic material based on the weight of the active mixture.
Claim 7
Dependent Claim
22 words
A composition according to claim 5 containing less than 2% of non-surfactant active material based on the total weight of the composition.
Claim 8
Dependent Claim
12 words
A composition according to claim 1 essentially free from non-surfactant organic solvent.
Claim 9
Dependent Claim
21 words
A composition according to claim 1 containing less than 5% of non-colloidal electrolyte based on the weight of the active mixture.
Claim 10
Dependent Claim
23 words
A composition according to claim 8 containing less than 2% by weight of non-colloidal electrolyte based on the weight of the total composition.
Claim 11
Dependent Claim
12 words
A composition according to claim 1 substantially free from added, non-colloidal electrolyte.
References Cited (Backward Citations)
US4243549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |