US4072632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dishwashing compositions
Assignee: Lever Brothers Co
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Filing: 1975-12-10
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Granted: 1978-02-07
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Expires: 1995-12-10
Abstract
Abstract A detergent active mixture of a dialkyl (C 7 -C 9 ) ester of sulphosuccinic acid and a sulphate R(OC 2 H 4 ) n OSO 3 M wherein R is alkyl, linear or branched, primary or secondary, having 11-18 carbon atoms, n is 0-40 when R is derived from a primary alcohol and 2-40 when derived from a secondary alcohol and M is an alkali metal ammonium or substituted ammonium ion, gives synergistic lather stability in hand dishwashing.
Inventors
- 👤 David A. Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:42
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/37; C11D1/12; C11D1/123; C11D1/29; C11D1/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
152 words
A lather stable dishwashing detergent composition comprising a mixture of: a. a dialkyl ester salt of a sulphosuccinic acid wherein each alkyl radical is selected from the group consisting of heptyl, octyl and nonyl and the cation is selected from the group consisting of an alkali metal and ammonium; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R contains from 11 to 18 carbon atoms and is selected from the group consisting of linear alkyl, branched alkyl and mixtures of linear and branched alkyl, n is an integer from 1 to 40 when R is derived from a primary alcohol, and 2 to 40 when R is derived from a secondary alcohol; and M is a cation selected from an alkali metal and ammonium; components (a) and (b) above being present in a weight ratio in the range of from 10:90 to 99:1.
Claim 2
Dependent Claim
152 words
A lather stable dishwashing detergent composition comprising a mixture of: a. a dialkyl ester salt of a sulphosuccinic acid wherein each alkyl radical is selected from the group consisting of heptyl, octyl and nonyl and the cation is selected from the group consisting of an alkali metal and ammonium; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R contains from 11 to 18 carbon atoms and is selected from the group consisting of linear alkyl, branched alkyl and mixtures of linear and branched alkyl, n is an integer from 1 to 40 when R is derived from a primary alcohol, and 2 to 40 when R is derived from a secondary alcohol; and M is a cation selected from an alkali metal and ammonium; components (a) and (b) above being present in a weight ratio in the range of from 10:90 to 99:1.
Claim 3
Dependent Claim
25 words
The lather stable dishwashing detergent composition defined in claim 1 wherein the weight ratio of component (a) to component (b) is from 90:10 to 20:80.
Claim 4
Dependent Claim
23 words
The lather stable dishwashing detergent composition defined in claim 1 wherein the weight ratio of component (a) to component (b) is about 1.1.
Claim 5
Dependent Claim
16 words
The lather stable dishwashing detergent composition defined in claim 1 wherein component (a) is a di-n-octylsulfosuccinate.
Claim 6
Dependent Claim
87 words
A lather stable dishwashing detergent composition whose active detergent material comprises a mixture of: a. an alkali metal or ammonium di-n-octylsulfosuccinate; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R is a linear primary alkyl group having 12 to 14 carbon atoms, n is 1 to 12, and M is a cation selected from the group consisting of an alkali metal and ammonium, components (a) and (b) being present in a weight ratio of from 10:90 to 99:1.
Claim 7
Dependent Claim
87 words
A lather stable dishwashing detergent composition whose active detergent material comprises a mixture of: a. an alkali metal or ammonium di-n-octylsulfosuccinate; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R is a linear primary alkyl group having 12 to 14 carbon atoms, n is 1 to 12, and M is a cation selected from the group consisting of an alkali metal and ammonium, components (a) and (b) being present in a weight ratio of from 10:90 to 99:1.
Claim 8
Dependent Claim
91 words
A lather stable dishwashing detergent composition whose active detergent material comprises a mixture of: a. an alkali metal or ammonium di-n-octylsulphosuccinate; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R is a primary alkyl group having 12 to 15 carbon atoms and about 25% methyl branching, n is 1 to 12, and M is a cation selected from the group consisting of an alkali metal and ammonium, components (a) and (b) being present in a weight ratio of from 10:90 to 99:1.
Claim 9
Dependent Claim
91 words
A lather stable dishwashing detergent composition whose active detergent material comprises a mixture of: a. an alkali metal or ammonium di-n-octylsulphosuccinate; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R is a primary alkyl group having 12 to 15 carbon atoms and about 25% methyl branching, n is 1 to 12, and M is a cation selected from the group consisting of an alkali metal and ammonium, components (a) and (b) being present in a weight ratio of from 10:90 to 99:1.
Claim 10
Dependent Claim
87 words
A lather stable dishwashing detergent composition whose active detergent material comprises a mixture of: a. an alkali metal or ammonium di-n-octylsulphosuccinate; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R is a random secondary alkyl group having 11 to 15 carbon atoms, n is 7 to 30, and M is a cation selected from the group consisting of an alkali metal and ammonium, components (a) and (b) being present in a weight ratio of from 10:90 to 99:1.
Claim 11
Dependent Claim
87 words
A lather stable dishwashing detergent composition whose active detergent material comprises a mixture of: a. an alkali metal or ammonium di-n-octylsulphosuccinate; and b. a sulphate of the formula R(OC 2 H 4 ) n OSO 3 M wherein R is a random secondary alkyl group having 11 to 15 carbon atoms, n is 7 to 30, and M is a cation selected from the group consisting of an alkali metal and ammonium, components (a) and (b) being present in a weight ratio of from 10:90 to 99:1.
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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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |