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US4548729A
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Aqueous foam-inhibiting compositions containing alkyl polyethylene glycol alkyl ethers
Assignee: Ecolab USA Inc
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Filing: 1984-04-18
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Granted: 1985-10-22
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Expires: 2004-04-18
Abstract
Abstract Foam-inhibiting compositions for use in an aqueous solution containing polyethylene glycol ethers corresponding to the following formula R1-O-(CH2CH2O)n-R2 in which R1 represents a linear or branched alkyl or alkenyl radical containing from 8 to 18 carbon atoms, R2 represents an alkyl radical containing from 4 to 8 carbon atoms and n is a number of from 7 to 12, mixtures of the same with a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl groups with alkyls having from 4 to 8 carbon atoms, and their use as foam-inhibiting additives for low-foam cleaning agents.
Inventors
- 👤 Karl Schmid
- 👤 Horst Baumann
- 👤 Jurgen Geke
- 👤 Hans-Gunther Germscheid
- 👤 Werner Ludecke
- 👤 Robert Piorr
- 👤 Christian Rossmann
- 👤 Rolf Scharf
- 👤 Hans-Joachim Schlussler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:41
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/72; C11D1/721; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; C11D3/00; C11D3/0005; C11D3/0026; C23; C23G; C23G1/00; C23G1/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
141 words
A foam-inhibiting composition for use in an aqueous solution consisting essentially of a mixture of (a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 8 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12 and b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydrcxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl group with alkyls having from 4 to 8 carbon atcms, in a ratio by weight of a:b of from 1:1 to 9:1.
Claim 2
Dependent Claim
141 words
A foam-inhibiting composition for use in an aqueous solution consisting essentially of a mixture of (a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 8 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12 and b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydrcxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl group with alkyls having from 4 to 8 carbon atcms, in a ratio by weight of a:b of from 1:1 to 9:1.
Claim 3
Dependent Claim
18 words
The foam-inhibiting composition of claim 1 wherein the ratio of (a) to (b) is from 2.3:1 to 9:1.
Claim 4
Dependent Claim
183 words
In the process of controlling undesirable foam development when subjecting surfaces of metal, glass, ceramic or plastic to an aqueous washing process by addition of a foam-inhibiting substance thereto, the improvement consisting of using a foam-inhibiting amount of a foam-inhibiting composition for use in an aqueous solution consisting essentially of a mixture of (a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 8 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12 and (b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl group with alkyls having from 4 to 8 carbon atoms, in a ratio of weight of a:b of from 1:1 to 9:1, as said foam-inhibiting substance.
Claim 5
Dependent Claim
183 words
In the process of controlling undesirable foam development when subjecting surfaces of metal, glass, ceramic or plastic to an aqueous washing process by addition of a foam-inhibiting substance thereto, the improvement consisting of using a foam-inhibiting amount of a foam-inhibiting composition for use in an aqueous solution consisting essentially of a mixture of (a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 8 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12 and (b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl group with alkyls having from 4 to 8 carbon atoms, in a ratio of weight of a:b of from 1:1 to 9:1, as said foam-inhibiting substance.
Claim 6
Dependent Claim
15 words
The process of claim 3 wherein n is an integer of from 8 to 10.
Claim 7
Dependent Claim
14 words
The process of claim 3 wherein n is 9 and R 2 is n-butyl.
Claim 8
Dependent Claim
20 words
The process of claim 3 wherein said mixture is present in a foam-inhibiting amount of from 10 to 2500 ppm.
Claim 9
Dependent Claim
15 words
The process of claim 6 wherein said foam-inhibiting amount is from 50 to 500 ppm.
Claim 10
Dependent Claim
191 words
A cleaning composition for use in an aqueous system comprising from 0 to 25% of at least one wetting agnet, from 0 to 80% of at least one builder and complexing agent, from 0 to 80% of an alkali metal hydroxide, and from 1% to 30% of at least one foam-inhibiting ccmposition for use in an aqueous solution consisting essentially of (a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 12 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12 and (b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl group with alkyls having from 4 to 8 carbon atoms, in a ratio of weight of a:b of from 1:1 to 9:1, as said foam-inhibiting substance.
Claim 11
Dependent Claim
191 words
A cleaning composition for use in an aqueous system comprising from 0 to 25% of at least one wetting agnet, from 0 to 80% of at least one builder and complexing agent, from 0 to 80% of an alkali metal hydroxide, and from 1% to 30% of at least one foam-inhibiting ccmposition for use in an aqueous solution consisting essentially of (a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 12 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12 and (b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl group with alkyls having from 4 to 8 carbon atoms, in a ratio of weight of a:b of from 1:1 to 9:1, as said foam-inhibiting substance.
Claim 12
Dependent Claim
195 words
A cleaning composition for use in an aqueous system comprising from 0 to 25% of at least one wetting agent, from 0 to 80% of at least one builder and complexing agent, from 0 to 80% of an alkali metal hydroxide, and from 1% to 30% of at least one foam-inhibiting composition for use in an aqueous solution consisting essentially of a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 8 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12, and b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxy number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl groups with alkyls having from 4 to 8 carbon atoms, in a ratio by weight of a:b of from 1:1 to 9:1, where the total amount of ingredients is 100%.
Claim 13
Dependent Claim
195 words
A cleaning composition for use in an aqueous system comprising from 0 to 25% of at least one wetting agent, from 0 to 80% of at least one builder and complexing agent, from 0 to 80% of an alkali metal hydroxide, and from 1% to 30% of at least one foam-inhibiting composition for use in an aqueous solution consisting essentially of a) an alkyl polyethylene glycol alkyl ether having the formula R.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2 wherein R 1 is a member having from 8 to 18 carbon atoms selected from the group consisting of alkyl and alkenyl, R 2 is an alkyl having from 4 to 8 carbon atoms and n is an integer of from 7 to 12, and b) a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxy number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl groups with alkyls having from 4 to 8 carbon atoms, in a ratio by weight of a:b of from 1:1 to 9:1, where the total amount of ingredients is 100%.
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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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |