Patent US3779934A successfully refreshed from Google Patents.
US3779934A
Expired / Lapsed
US
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Process and agents for the clear rinse in mechanical dishwashing
Assignee: Henkel AG and Co KGaA
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Filing: 1971-12-07
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Granted: 1973-12-18
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Expires: 1991-12-07
Abstract
Abstract Process for rinsing of dishes in dishwashing machines having one or several clear-rinsing cycles using an aqueous solution of an adduct of from 3 to 30 mols of ethylene oxide to alkanediols with a linear alkane chain of from 10 to 20 carbon atoms and having vicinal, non-terminal hydroxyls, as well as clear-rinsing agents for use in the process.
Inventors
- 👤 T Altenschopfer
- 👤 P Krings
- 👤 H Lehmann
- 👤 H Batka
- 👤 G Jakobi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:53
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/722; C11D3/00; C11D3/0005; C11D3/0026; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
The aqueous concentrates of claim 1 wherein said alkanediol of component (A) has an average chain length of 14 to 16 carbon atoms.
Claim 2
Dependent Claim
38 words
The aqueous concentrates of claim 1 wherein said component (B) is an alcohol having from 10 to 20 carbon atoms selected from the group consisting of alkanOls and alkenols adducted with 1 to 3 mols of ethylene oxide.
Claim 3
Dependent Claim
31 words
The aqueous concentrates of claim 1 wherein said component (B) is an alkylphenol having 6 to 12 carbon atoms in the alkyl adducted with 1 to 6 mols of ethylene oxide.
Claim 4
Dependent Claim
13 words
The aqueous concentrates of claim 1 wherein said component (B) is component (B)(3).
Claim 5
Dependent Claim
21 words
The aqueous concentrates of claim 1 wherein said weight ratio between component A and component B is from 1:0.5 to 1:2.
Claim 6
Dependent Claim
90 words
In the process for the mechanical washing of dishes which comprises subjecting dirty dishes to the action of a washing solution, subjecting the washed dishes to at least one clear-rinsing solution and recovering said washed dishes, the improvement consisting of utilizing an aqueous solution containing from 0.05 to 1.0 gm per liter of an adduct of from 3 to 30 mols of ethylene oxide to an alkanediol having a linear alkane chain with from 10 to 20 carbon atoms and vicinal, non-terminal hydroxyls, as said at least one clear-rinsing solution.
Claim 7
Dependent Claim
38 words
The process of claim 7 wherein said adduct is the adduct of from 3 to 7 mols of ethylene oxide to an alkanediol having an average of from 14 to 16 carbon atoms in its linear alkane chain.
Claim 8
Dependent Claim
262 words
The process of claim 7 wherein said adduct is a mixture of adducts consisting of (A) an adduct of from 5 to 20 mols of ethylene oxide to an alkanediol having a linear alkane chain with from 10 to 20 carbon atoms and vicinal, non-terminal hydroxyls, and (B) an alkoxylated foam suppressing compound selected from the group consisting of (1) an alcohol having from 10 to 20 carbon atoms selected from the group consisting of alkanols and alkenols adducted with 1 to 3 mols of ethylene oxide, (2) alkylphenols having 6 to 12 carbon atoms in the alkyl adducted with 1 to 6 mols of ethylene oxide, (3) an alcohol selected from the group consisting of (i) alkanols having from 10 to 20 carbon atoms, (ii) alkanediols having from 10 to 20 carbon atoms, and (iii) alkylphenols having from 6 to 12 carbon atoms in the alkyl, adducted with from 1 to 20 mols of ethylene oxide and from 1 to 20 mols of an alkylene oxide selected from the group consisting of propylene oxide and butylene oxide wherein at least 30 mol percent of the total amount of ethylene oxide plus alkylene oxide is said alkylene oxide, (4) formaldehyde acetal adducts of an alcohol selected from the group consisting of alkanols and alkanediols having from 10 to 20 carbon atoms and alkylphenols having from 6 to 12 carbon atoms in the alkyl adducted with from 10 to 30 mols of ethylene oxide, and (5) mixtures thereof, wherein the weight ratio between component A and component B is from 1:0.2 to 1:4.
Claim 9
Dependent Claim
21 words
The process of claim 7 wherein said adduct is present in an amount of from 0.1 to 0.6 gm per liter.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |