US3956199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dishwashing compositions
Assignee: Lever Brothers Co
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Filing: 1973-11-14
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Granted: 1976-05-11
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Expires: 1993-11-14
Abstract
Abstract A detergent composition suitable for hand dishwashing and in particular for aluminium pan cleaning which has a pH of from 4 to 8.5 and consists of the following essential components: from 10 to 50% by weight of a detergent, from 5-40% of which is a calcium/magnesium sensitive anionic synthetic detergent; at least 1% of a solubiliser and 0.015-0.45% of an organic phosphonate. When used at dilutions of about 5x, the compositions can provide anti-resoiling effects on aluminium.
Inventors
- 👤 Peter Leonard Dawson
- 👤 Michael Tom Rothwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:53
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/36; C11D3/361; C11D1/00; C11D1/02; C11D1/34; C11D1/345; C11D1/66; C11D3/20; C11D3/2075
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A detergent composition suitable for hand dishwashing having a pH in the range 4-8.5 comprising a. 10-50% by weight of an active detergent compound, of which 5-10% is calcium/magnesium sensitive anionic synthetic detergent b. 1-40% by weight of a solubiliser, of which 0-25% is nonionic solubiliser c. 0-5% by weight of a pH controller d. an effective amount of an organic phosphonate derived from an acid selected from the group consisting of ##EQU5## wherein x + y + z =8-14 and the total number of carbon atoms is 10-16 wherein p + q =3-7 and the total number of carbon atoms is 11-15 ##EQU6## wherein n + d + e + f = 8-14 and the total number of carbon atoms is 16-22 ##EQU7## wherein r + s + t =8-14and the total number of carbon atoms is 15-21 ##EQU8## wherein a + b + c =11-15 and the total number of carbon atoms in the alkyl group is 12-16.
Claim 2
Dependent Claim
160 words
A detergent composition suitable for hand dishwashing having a pH in the range 4-8.5 comprising a. 10-50% by weight of an active detergent compound, of which 5-10% is calcium/magnesium sensitive anionic synthetic detergent b. 1-40% by weight of a solubiliser, of which 0-25% is nonionic solubiliser c. 0-5% by weight of a pH controller d. an effective amount of an organic phosphonate derived from an acid selected from the group consisting of ##EQU5## wherein x + y + z =8-14 and the total number of carbon atoms is 10-16 wherein p + q =3-7 and the total number of carbon atoms is 11-15 ##EQU6## wherein n + d + e + f = 8-14 and the total number of carbon atoms is 16-22 ##EQU7## wherein r + s + t =8-14and the total number of carbon atoms is 15-21 ##EQU8## wherein a + b + c =11-15 and the total number of carbon atoms in the alkyl group is 12-16.
Claim 3
Dependent Claim
19 words
A detergent composition according to claim 1 wherein the organic phosphonate comprises a C 10 -C 16 alkyl mono-1-phosphonate.
Claim 4
Dependent Claim
20 words
A detergent composition according to claim 1 wherein the organic phosphonate is a C 12 -C 16 alkyl random monophosphonate.
Claim 5
Dependent Claim
20 words
A detergent composition according to claim 3 wherein the organic phosphonate is a C 11 -C 15 alkyl random monophosphonate.
Claim 6
Dependent Claim
19 words
A detergent composition according to claim 1 wherein the organic phosphonate is a C 12 alkyl benzene random monophosphonate.
Claim 7
Dependent Claim
19 words
A detergent composition according to claim 1 wherein the organic phosphonate is a C 12-16 alkyl imino dimethylene phosphonate.
Claim 8
Dependent Claim
26 words
A detergent composition according to claim 1 wherein the organic phosphonate is in the form of a mono- sodium, potassium, ammonium or substituted ammonium half salt.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |