Patent US3275147A successfully refreshed from Google Patents.
US4532076A
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Aqueous anionic surfactant concentrates containing viscosity reducing agents
Assignee: Henkel AG and Co KGaA
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Filing: 1983-10-19
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Granted: 1985-07-30
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Expires: 2003-10-19
Abstract
Abstract An aqueous anionic surfactant concentrate containing certain low molecular weight organic compounds as viscosity regulators and a method of regulating the viscosity of highly viscous concentrates, e.g. α-sulfo fatty acid ester surfactants in concentrations about 30% by weight. The viscosity regulators are selected from: (a) a C 1 -C 6 -alkyl monocarboxylic acid substituted in the α-position by a halogen, cyano or sulfo group, a salt thereof, or an ester thereof with a C 1 -C 6 -alkanol, (b) a C 1 -C 6 -alkylene dicarboxylic acid substituted in the α-position by a halogen, cyano or sulfo group, a salt thereof, or an ester thereof with a C 1 -C 6 -alkanol, (c) nitrilotriacetic acid and its salts, (d) an ether alcohol containing from 2 to 4 alkylene glycol units and 1 alkoxy group, (e) and mixtures thereof.
Inventors
- 👤 Karl Schmid
- 👤 Horst Baumann
- 👤 Hans J. Rommerskirchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:03
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2093; C11D1/00; C11D1/02; C11D1/12; C11D1/28; C11D3/2068; C11D3/2075; C11D3/2082; C11D3/26; C11D3/33; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
An aqueous concentrate of an anionic surfactant having a viscosity at 70° C. of not more than about 10,000 mPas comprising: A. an α-sulfo fatty acid ester; and B. a viscosity reducing amount of a salt of at least one of the following viscosity regulators: α-sulfoadipic acid methyl ester, α-chlorovaleric acid, cyanoacetic acid, and cyanoacetic acid ethyl ester; and wherein component A. is present in an excess of 30% by weight, based on the weight of the concentrate.
Claim 2
Dependent Claim
78 words
An aqueous concentrate of an anionic surfactant having a viscosity at 70° C. of not more than about 10,000 mPas comprising: A. an α-sulfo fatty acid ester; and B. a viscosity reducing amount of a salt of at least one of the following viscosity regulators: α-sulfoadipic acid methyl ester, α-chlorovaleric acid, cyanoacetic acid, and cyanoacetic acid ethyl ester; and wherein component A. is present in an excess of 30% by weight, based on the weight of the concentrate.
Claim 3
Dependent Claim
17 words
A concentrate in accordance with claim 1 wherein said salt in component B. is the sodium salt.
Claim 4
Dependent Claim
15 words
A concentrate in accordance with claim 1 wherein said concentrate has a pH below 7.
Claim 5
Dependent Claim
33 words
A concentrate in accordance with claim 1 wherein said viscosity regulator B. is employed in an amount of from about 1 to about 15% by weight based on the weight of component A.
Claim 6
Dependent Claim
33 words
A concentrate in accordance with claim 1 wherein said viscosity regulator B. is employed in an amount of from about 7 to about 12% by weight, based on the weight of component A.
Claim 7
Independent Claim
116 words
A method for the manufacture of powdery or granular spray dried detergents and cleaners comprising the steps of: I. forming an aqueous anionic surfactant concentrate having a viscosity at 70° C. of not more than about 10,000 mPas comprising A. an α-sulfo fatty acid ester; and B. a viscosity reducing amount of a salt of at least one of the following viscosity regulators: α-sulfoadipic acid methyl ester, α-chlorovaleric acid, cyanoacetic acid, and cyanoacetic acid ethyl ester; and wherein component A. is present in an excess of 30% by weight, based on the weight of the concentrate; and II. spray drying the concentrate at a temperature in the range of from about 60° to about 90° C.
Claim 8
Independent Claim
116 words
A method for the manufacture of powdery or granular spray dried detergents and cleaners comprising the steps of: I. forming an aqueous anionic surfactant concentrate having a viscosity at 70° C. of not more than about 10,000 mPas comprising A. an α-sulfo fatty acid ester; and B. a viscosity reducing amount of a salt of at least one of the following viscosity regulators: α-sulfoadipic acid methyl ester, α-chlorovaleric acid, cyanoacetic acid, and cyanoacetic acid ethyl ester; and wherein component A. is present in an excess of 30% by weight, based on the weight of the concentrate; and II. spray drying the concentrate at a temperature in the range of from about 60° to about 90° C.
Claim 9
Dependent Claim
20 words
A method in accordance with claim 6 wherein other detergent ingredients are added to the concentrate prior to spray drying.
Claim 10
Dependent Claim
17 words
A method in accordance with claim 6 wherein said salt in component B. is the sodium salt.
Claim 11
Dependent Claim
18 words
A method in accordance with claim 6 wherein said concentrate in step I has a pH below 7.
Claim 12
Dependent Claim
36 words
A method in accordance with claim 6 wherein the viscosity regulator in step I. B. is employed in an amount of from about 1 to about 15% by weight, based on the weight of component A.
Claim 13
Dependent Claim
36 words
A method in accordance with claim 6 wherein the viscosity regulator in step I. B. is employed in an amount of from about 7 to about 12% by weight, based on the weight of component A.
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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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |