US4526709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Built liquid detergent compositions containing zeolite Y
Assignee: Lever Brothers Co
•
Filing: 1984-09-19
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Granted: 1985-07-02
•
Expires: 2004-09-19
Abstract
Abstract Built liquid detergent compositions containing a mixture of a condensed phosphate and/or a nitrilotriacetate and zeolite 4 A become rapidly unstable at a pH between 7 and 9, which results in phase separation. Using zeolites of the Y-type results in stable products.
Inventors
- 👤 Jelles V. Boskamp
- 👤 Willem M. M. Mohlmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/128; C11D3/1286
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
An aqueous, built liquid detergent composition comprising, in an aqueous medium, (a) from 1-60% by weight of an active detergent material; (b) from 5-30% by weight of a builder salt selected from the group consisting of alkalimetal condensed phosphates, alkalimetal nitrilotriacetates and mixtures thereof, and (c) from 1-45% by weight of a zeolite, wherein the zeolite is a zeolite of the Y-type having the following unit cell composition: Na.sub.56 [AlO.sub.2).sub.56 (SiO.sub.2).sub.136 ].250 H.sub.2 O, the compositions having a pH of 7-9 and exhibiting stability against phase separation and against decomposition of the zeolite component.
Claim 2
Dependent Claim
94 words
An aqueous, built liquid detergent composition comprising, in an aqueous medium, (a) from 1-60% by weight of an active detergent material; (b) from 5-30% by weight of a builder salt selected from the group consisting of alkalimetal condensed phosphates, alkalimetal nitrilotriacetates and mixtures thereof, and (c) from 1-45% by weight of a zeolite, wherein the zeolite is a zeolite of the Y-type having the following unit cell composition: Na.sub.56 [AlO.sub.2).sub.56 (SiO.sub.2).sub.136 ].250 H.sub.2 O, the compositions having a pH of 7-9 and exhibiting stability against phase separation and against decomposition of the zeolite component.
Claim 3
Dependent Claim
22 words
The composition of claim 1, comprising 5-25% by weight of (a), 5-25% by weight of (b) and 5-25% by weight of (c).
Claim 4
Dependent Claim
13 words
The composition of claim 1, comprising a completely hydrated zeolite of the Y-type.
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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) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |