Patent US4071377A successfully refreshed from Google Patents.
US4071377A
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Method of mechanical dishwashing and compositions
Assignee: Henkel AG and Co KGaA
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Filing: 1974-04-05
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Granted: 1978-01-31
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Expires: 1994-04-05
Abstract
Abstract A method for the mechanical washing of dishes, wherein the soiled dishes are treated with an aqueous alkaline liquor having a pH of from 8 to 13 which contains at least one compound inhibiting alkaline earth metal ion precipitation, rinsing and recovering cleaned dishes comprising using finely-dispersed, water-insoluble silicate compounds having a calcium-binding power of at least 50 mg CaO/gm of anhydrous substance and having the formula, combined water not shown, of (M.sub.2/n O).sub.x · Me.sub.2 O.sub.3 · (SiO 2 ) y where M is a cation of the valence n, exchangeable with calcium, x is a number of from 0.7 to 1.5, Me is a member selected from aluminum and boron and y is a number of from 0.8 to 6, as said compound inhibiting alkaline earth metal ion precipitation as well as alkaline-reacting mechanical dish washing compositions containing said silicate compounds.
Inventors
- 👤 Milan Johann Schwuger
- 👤 Heinz Smolka
- 👤 Theodor Altenschopfer
- 👤 Manfred Rostek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:34
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/128; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/435; A61K31/44; A61K31/445; A61K31/4453; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C07D295/00; C07D295/04; C07D295/08; C07D295/096; C11D1/00; C11D1/66; C11D1/72; C11D3/04; C11D3/044; C11D3/08; C11D3/10; C11D3/395; C11D3/3955; C11D2111/00; C11D2111/10; C11D2111/14; Y; Y10; Y10S; Y10S423/00; Y10S423/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
239 words
In the process of mechanically washing of soiled dishes by mechanically contacting soiled dishes with an alkaline aqueous solution at a pH of from 8 to 13 containing a sufficient amount of a water softening agent whereby the soil on said soiled dishes is dispersed or dissolved, rinsing said dishes with a clear rinse liquid and recovering said dishes substantially soil-free, the improvement which consists of using a composition for use in mechanical dishwashers consisting essentially of (A) 44 percent by weight on the anhydrous basis of a finely-dispersed water-insoluble aluminosilicate compound having primary particles in the size range of 100 μ to 0.1 μ, a calcium binding power of 150 mg CaO/gm of anhydrous substance when measured at 22° C by the Calcium Binding Power Test Method described in the specification and the formula 0.9 Na.sub.2 O · Al.sub.2 O.sub.3 · 2.05 SiO.sub.2 · 4.3 H.sub.2 O (b) 40 percent by weight of Na 2 SiO 3 , (C) 2 percent by weight of the sodium or potassium salt of dichloroisocyanuric acid, (D) 1 percent by weight of a nonionic block polymer of ethylene oxide to polyoxypropylene glycol with a molecular weight of 1900 where the amount of polyethylene glycol ethers is 10% by weight and (E) 13 percent by weight of water, as said water softening agent, in such an amount that said alkaline aqueous solution contains from 3 to 5 gm per liter of said composition.
Claim 2
Dependent Claim
239 words
In the process of mechanically washing of soiled dishes by mechanically contacting soiled dishes with an alkaline aqueous solution at a pH of from 8 to 13 containing a sufficient amount of a water softening agent whereby the soil on said soiled dishes is dispersed or dissolved, rinsing said dishes with a clear rinse liquid and recovering said dishes substantially soil-free, the improvement which consists of using a composition for use in mechanical dishwashers consisting essentially of (A) 44 percent by weight on the anhydrous basis of a finely-dispersed water-insoluble aluminosilicate compound having primary particles in the size range of 100 μ to 0.1 μ, a calcium binding power of 150 mg CaO/gm of anhydrous substance when measured at 22° C by the Calcium Binding Power Test Method described in the specification and the formula 0.9 Na.sub.2 O · Al.sub.2 O.sub.3 · 2.05 SiO.sub.2 · 4.3 H.sub.2 O (b) 40 percent by weight of Na 2 SiO 3 , (C) 2 percent by weight of the sodium or potassium salt of dichloroisocyanuric acid, (D) 1 percent by weight of a nonionic block polymer of ethylene oxide to polyoxypropylene glycol with a molecular weight of 1900 where the amount of polyethylene glycol ethers is 10% by weight and (E) 13 percent by weight of water, as said water softening agent, in such an amount that said alkaline aqueous solution contains from 3 to 5 gm per liter of said composition.
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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) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |