Patent US4228043A successfully refreshed from Google Patents.
US4228043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid detergent composition
Assignee: Lever Brothers Co
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Filing: 1978-08-21
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Granted: 1980-10-14
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Expires: 1998-08-21
Abstract
Abstract In a process for making an aqueous built liquid detergent composition comprising sodium tripolyphosphate and alkalimetal orthophosphate, the formation of alkalimetal orthophosphate in situ by neutralization may cause some sediment. This sediment formation is significantly reduced by the addition of a small amount of an alkanolamine such as triethanolamine to the liquid detergent composition.
Inventors
- 👤 Guido C. VAN DEN Brom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:35
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/30; C11D11/00; C11D11/0094; C11D3/02; C11D3/04; C11D3/06; C11D3/34; C11D3/3418
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
109 words
In a process for the preparation of an aqueous built liquid detergent composition containing 2 to 20% by weight of an active detergent, at least about 12% by weight of sodium tripolyphosphate, at least 2% by weight of an alkalimetal orthophosphate in which the alkali metal orthophosphate is produced in situ by neutralizing orthophosphoric acid by a suitable base, the sum of the two phosphate builders being about 14% to about 35% by weight, and a hydrotrope or stabilizing system, the improvement which comprises the step of adding from 0.5% to 5% by weight of a mono-, di- or trialkanolamine, wherein the alkanol constituent is ethanol, propanol or isopropanol.
Claim 2
Dependent Claim
109 words
In a process for the preparation of an aqueous built liquid detergent composition containing 2 to 20% by weight of an active detergent, at least about 12% by weight of sodium tripolyphosphate, at least 2% by weight of an alkalimetal orthophosphate in which the alkali metal orthophosphate is produced in situ by neutralizing orthophosphoric acid by a suitable base, the sum of the two phosphate builders being about 14% to about 35% by weight, and a hydrotrope or stabilizing system, the improvement which comprises the step of adding from 0.5% to 5% by weight of a mono-, di- or trialkanolamine, wherein the alkanol constituent is ethanol, propanol or isopropanol.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein the alkanolamine is triethanolamine.
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) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |