Patent US2066794A successfully refreshed from Google Patents.
US4021376A
Expired / Lapsed
US
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Detergent compositions with nonphosphate builders containing two or more carboxyl groups
Assignee: Lever Brothers Co
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Filing: 1973-07-13
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Granted: 1977-05-03
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Expires: 1993-07-13
Abstract
Abstract A detergent composition comprising a detergent surfactant selected from the group anionic, nonionic, zwitterionic and ampholytic compounds and mixtures thereof and a non-phosphate detergent builder containing two or more carboxyl groups and having a pK of the dissociation constant for the calcium complex of between about 3 to about 5, said detergent builder being selected from the group consisting of certain ether carboxylates, oxirane carboxylates, polyhydroxycarboxylates containing at least two hydroxy groups, sulfocarboxylates, polycarboxylates, acetal carboxylates and keto carboxylates, wherein the ratio of surfactant to builder in the composition is from about 0.4:1 to about 3:1 has been found to be particularly efficacious at low use concentrations, on the order of between about 0.15 percent and 0.1 percent.
Inventors
- 👤 Vincent Lamberti
- 👤 Susan L. Kogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:48
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/34; C11D3/3472; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C11D3/20; C11D3/2075; C11D3/2086; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C11D1/28; C11D1/88; C11D1/90
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A detergent composition comprising a detergent surfactant selected from the group consisting of anionic, nonionic, zwitterionic and ampholytic compounds and mixtures thereof and a nonphosphate detergent builder compound which is the alkali metal, ammonium, morpholinium, alkyl ammonium, mono-, di-, and trialkanol ammonium or tetra-alkyl ammonium salt of dihydroxyfumaric acid the ratio of detergent surfactant to detergent builder being from about 0.4:1 to about 3:1.
Claim 2
Dependent Claim
64 words
A detergent composition comprising a detergent surfactant selected from the group consisting of anionic, nonionic, zwitterionic and ampholytic compounds and mixtures thereof and a nonphosphate detergent builder compound which is the alkali metal, ammonium, morpholinium, alkyl ammonium, mono-, di-, and trialkanol ammonium or tetra-alkyl ammonium salt of dihydroxyfumaric acid the ratio of detergent surfactant to detergent builder being from about 0.4:1 to about 3:1.
Claim 3
Dependent Claim
95 words
A detergent composition as defined in claim 1 wherein the detergent surfactant is selected from the group consisting of alkali metal salts of linear secondary alkyl (C 10 -C 15 ) benzene sulfonate, the alkali metal salts of the product prepared by the SO 3 /air sulfonation of C 15 -C 18 α-olefins, the adduct of 7 moles of ethylene oxide with 1 mole of a C 11 -C 15 random linear secondary alcohol derived from C 11 -C 15 normal parafins, alkali metal hydroxyalkyl (C 14 -C 16 ) N-methyltaurate, cocodimethylsulfopropylbetaine and mixtures thereof.
Claim 4
Dependent Claim
32 words
A detergent composition as defined in claim 2 wherein the composition is in powder form and the detergent surfactant is present in the composition from about 20 to about 60 weight percent.
Claim 5
Dependent Claim
25 words
A detergent composition as defined in claim 3 wherein the detergent surfactant is present in the composition from about 25 to about 50 weight percent.
Claim 6
Dependent Claim
28 words
A detergent composition as defined in claim 2 wherein the detergent surfactant is an alkali metal salt of linear secondary alkyl (C 10 -C 15 ) benzene sulfonate.
Claim 7
Dependent Claim
14 words
A detergent composition as defined in claim 3 wherein the detergent surfactant is cocodimethylsulfopropylbetaine.
Claim 8
Dependent Claim
29 words
A detergent composition as defined in claim 2 wherein the composition is in liquid form and the detergent surfactant is present from about 15 to about 30 weight percent.
Claim 9
Dependent Claim
22 words
A detergent composition as defined in claim 7 wherein the detergent surfactant is present from about 17 to about 25 weight percent.
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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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |