US3846346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent composition with controlled alkalinity
Assignee: PQ Corp
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Filing: 1972-11-06
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Granted: 1974-11-05
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Expires: 1992-11-06
Abstract
Abstract A detergent composition containing 5 to 40 percent of a nonionic or anionic surfactant, 10 to 50 percent of sodium nitrolotriacetate or sodium tripolyphosphate squestering agent, and optionally anti-redeposition agents and optical brighteners, is improved by adding 5 to 40 percent alkali metal silicate and 5 to 40 percent of borax, ethylenediaminetetraacetic acid, nitriloacetic acid or diethylenetriaminepentaacetic acid as a pH controller.
Inventors
- 👤 W Conn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; C11D3/06; C11D3/08; C11D3/16; C11D3/26; C11D3/33
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
A DETERGENT COMPOSITION FOR USE IN LAUNDERING, CONSISTING ESSENTIALLY OF 5 TO 40 PERCENT SURFACTANT, 10 TO 50 PERCENT SEQUESTERING AGENT, 0 TO 5 PERCENT ANTI-REDEPOSITION AGENT, 0 TO 2 PERCENT OPTICAL BRIGHTER, WHEREIN SAID SEQUESTERING AGENT IS SELECTED FROM A GROUP CONSISTING OF SODIUM NITROLOTRIACETATE AND SODIUM TRIPOLYPHOSPHATE AND SAID SURFACTANT IS SELECTED FROM A GROUP CONSISTING OF NONIONIC AND ANIONIC SURFACTANTS, AND INCLUDING THE IMPROVEMENT CONSISTING OF USING AT LEAST 5 PERCENT AND UP TO 40 PERCENT ALKALI METAL SILICATE AND 5 TO 40 PERCENT OF A RELATIVELY ACIDIC PH CONTROLLER SELECTED FROM A GROUP CONSISTING OF FUSED BORAX, ETHELENEDIAMINETETRAACEETIC ACID, NITRILOTRIACETIC ACIDS AND DIETHYLENETRIAMINEPENTAACETIC ACID AND WHEREBY A NORMAL WASH SOLUTION OF SAID COMPOSITION HAS A PH OF 9.5 TO 10.5.
Claim 2
Dependent Claim
124 words
A DETERGENT COMPOSITION FOR USE IN LAUNDERING, CONSISTING ESSENTIALLY OF 5 TO 40 PERCENT SURFACTANT, 10 TO 50 PERCENT SEQUESTERING AGENT, 0 TO 5 PERCENT ANTI-REDEPOSITION AGENT, 0 TO 2 PERCENT OPTICAL BRIGHTER, WHEREIN SAID SEQUESTERING AGENT IS SELECTED FROM A GROUP CONSISTING OF SODIUM NITROLOTRIACETATE AND SODIUM TRIPOLYPHOSPHATE AND SAID SURFACTANT IS SELECTED FROM A GROUP CONSISTING OF NONIONIC AND ANIONIC SURFACTANTS, AND INCLUDING THE IMPROVEMENT CONSISTING OF USING AT LEAST 5 PERCENT AND UP TO 40 PERCENT ALKALI METAL SILICATE AND 5 TO 40 PERCENT OF A RELATIVELY ACIDIC PH CONTROLLER SELECTED FROM A GROUP CONSISTING OF FUSED BORAX, ETHELENEDIAMINETETRAACEETIC ACID, NITRILOTRIACETIC ACIDS AND DIETHYLENETRIAMINEPENTAACETIC ACID AND WHEREBY A NORMAL WASH SOLUTION OF SAID COMPOSITION HAS A PH OF 9.5 TO 10.5.
Claim 3
Dependent Claim
12 words
A detergent according to claim 1 wherein said surfactant is ethoxylated nonylphenol.
Claim 4
Dependent Claim
15 words
A detergent according to claim 1 wherein said relatively acidic pH controller is fused borax.
Claim 5
Dependent Claim
14 words
A detergent according to claim 1 wherein said relatively acidic pH controller is NTA.
Claim 6
Dependent Claim
24 words
A detergent composition according to claim 1 wherein said alkali metal silicate is sodium Silicate and comprises 12.4 to 50 percent of the composition.
Claim 7
Dependent Claim
24 words
A detergent composition according to claim 1 wherein said alkali metal silicate is sodium silicate and comprises 24 to 50 percent of the composition.
Claim 8
Dependent Claim
93 words
A detergent composition for use in dishwashing, consisting essentially of 0 to 5 percent nonionic surfactant; 10 to 50 percent sequestering agent selected from a group consisting of sodium nitrilotriacetate and sodium tripolyphosphate, and including the improvement consisting of using at least 10 and up to 60 percent alkali metal silicate and 10 to 30 percent of a relatively acidic pH controller selected from a group consisting of fused borax, nitrilotriacetic acid, ethylenediaminetetraacetic acid and diethylenetriaminepentaacetic acid and whereby a normal wash solution of the composition has a pH of 10 to 11.5.
Claim 9
Dependent Claim
93 words
A detergent composition for use in dishwashing, consisting essentially of 0 to 5 percent nonionic surfactant; 10 to 50 percent sequestering agent selected from a group consisting of sodium nitrilotriacetate and sodium tripolyphosphate, and including the improvement consisting of using at least 10 and up to 60 percent alkali metal silicate and 10 to 30 percent of a relatively acidic pH controller selected from a group consisting of fused borax, nitrilotriacetic acid, ethylenediaminetetraacetic acid and diethylenetriaminepentaacetic acid and whereby a normal wash solution of the composition has a pH of 10 to 11.5.
Claim 10
Dependent Claim
12 words
A detergent according to claim 7 wherein said surfactant is ethoxylated nonylphenol.
Claim 11
Dependent Claim
15 words
A detergent according to claim 1 wherein said relatively acidic pH controller is fused borax.
Claim 12
Dependent Claim
15 words
A detergent according to claim 7 wherein said relatively acidic pH controller is nitrilotriacetic acid.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |