Patent US4600523A successfully refreshed from Google Patents.
US4600523A
Expired / Lapsed
US
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Hydroxyalkyl polyethylene glycol ether foam inhibitors
Assignee: Henkel AG and Co KGaA
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Filing: 1984-12-13
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Granted: 1986-07-15
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Expires: 2004-12-13
Abstract
Abstract An additive for cleaning preparations comprising a foam-inhibitive effective amount of a compound of the formula R.sup.1 --CHOH--CHR.sup.2 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.3 wherein: R 1 is a straight-chain C 6-16 -alkyl; R 2 is H or a C 1-8 -alkyl; R 3 is a straight-chain or branched C 4-8 -alkyl; and n is a number average of about 7 to 12; with the proviso that the total number of carbon atoms in R 1 and R 2 is between 6 and 16; and a method of inhibiting foam.
Inventors
- 👤 Robert Piorr
- 👤 Hans-Joachim Schluessler
- 👤 Peter Nikolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:13
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/3707; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08L; C08L71/00; C08L71/02; C08L71/03; C11D1/00; C11D1/66; C11D1/72; C11D1/721; C11D3/0005; C11D3/0026; C11D3/20; C11D3/2068
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
103 words
A method of inhibiting foam in an aqueous cleaning preparation or a solid or liquid concentrate for preparation of the same, comprising incorporating therein a foam-inhibitive effective amount of at least one first compound of the formula R.sup.1 --CHOH--CHR.sup.2 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.3 wherein: R 1 is a straight-chain C 6-16 -alkyl; R 2 is H or a C 1-8 -alkyl; R 3 is a straight-chain or branched C 4-8 -alkyl; and n is a number average of about 7 to 12; with the proviso that the total number of carbon atoms in R 1 and R 2 is between 6 and 16.
Claim 2
Independent Claim
103 words
A method of inhibiting foam in an aqueous cleaning preparation or a solid or liquid concentrate for preparation of the same, comprising incorporating therein a foam-inhibitive effective amount of at least one first compound of the formula R.sup.1 --CHOH--CHR.sup.2 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.3 wherein: R 1 is a straight-chain C 6-16 -alkyl; R 2 is H or a C 1-8 -alkyl; R 3 is a straight-chain or branched C 4-8 -alkyl; and n is a number average of about 7 to 12; with the proviso that the total number of carbon atoms in R 1 and R 2 is between 6 and 16.
Claim 3
Dependent Claim
77 words
The method of claim 1 wherein at least one second compound is admixed with said at least one first compound in a weight ratio of about 1:1-9, said second compound being the reaction product of 1 part by weight of polyglycerol having a hydroxyl number of about 900 to 1,200 ethoxylated with about 4 to 20 parts by weight of ethylene oxide, whose free hydroxyl groups are then etherified with at least one C 4-8 -alkyl halide.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein said first compound is present in a concentration of about 10 to 2,500 ppm in the ready-to-use cleaning preparation.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein said first compound is present in a concentration of about 50 to 500 ppm in the ready-to-use cleaning preparation.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein R 1 is C 12-16 .
Claim 7
Dependent Claim
10 words
The method of claim 1 wherein R 2 is H.
Claim 8
Dependent Claim
13 words
The method of claim 1 wherein R 3 is n-butyl, n-hexyl, or n-octyl.
Claim 9
Dependent Claim
16 words
The method of claim 1 wherein n is a number average of about 8 to 10.
Claim 10
Dependent Claim
27 words
The method of claim 1 wherein R 1 is C 12-16 , R 2 is H, and n is a number average of about 8 to 10.
Claim 11
Dependent Claim
10 words
The method of claim 9 wherein R 3 is n-butyl.
Claim 12
Dependent Claim
31 words
The method of claim 2 said admixture of said first compound and said second compound is present in a concentration of about 10 to 2,500 ppm in the ready-to-use cleaning preparation.
Claim 13
Dependent Claim
32 words
The method of claim 2 wherein said admixture of said first compound and said second compound is present in a concentration of about 50 to 500 ppm in the ready-to-use cleaning preparation.
Claim 14
Dependent Claim
20 words
The method of claim 2 wherein said weight ratio of said second compound to said first compound is about 1:2.3-9.
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |