Patent US4744923A successfully refreshed from Google Patents.
US4744923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of alkylaminopolyglycol ethers as foam-depressing additives in low-foam detergent preparations
Assignee: Henkel AG and Co KGaA
•
Filing: 1987-04-30
•
Granted: 1988-05-17
•
Expires: 2007-04-30
Abstract
Abstract Alkylaminopolyethylene glycol ethers corresponding to the following formula ##STR1## in which R represents a C 6 -C 20 alkyl or alkenyl radical, R 1 and R 2 are the same or different and represent a C 1 -C 8 alkyl radical and the indices m and n are the same or different and represent a number of from 3 to 20, with the proviso that the sum of m and n is from 5 to 25, are suitable as foam inhibitors for detergent preparations. The foam inhibitors are stable to strong alkalis and strong acids and may be used in concentrations of from 10 to 2500 ppm.
Inventors
- 👤 Robert Piorr
- 👤 Gilbert Schenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:28
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0026; C11D1/00; C11D1/38; C11D1/42; C11D1/44
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
97 words
The process of suppressing foam in an aqueous detergent solution comprising contacting said solution with from about 10 to about 2500 ppm of a terminal-group-blocked alkylaminopolyethylene glycol ether corresponding to the following formula ##STR3## wherein R represents a C 6 -C 20 alkyl or alkenyl radical, R 1 and R 2 independently of one another represent a C 1 -C 8 alkyl radical, m and n independently of one another is a number of from about 3 to about 20, with the proviso that the sum of m and n is from about 5 to about 25.
Claim 2
Dependent Claim
97 words
The process of suppressing foam in an aqueous detergent solution comprising contacting said solution with from about 10 to about 2500 ppm of a terminal-group-blocked alkylaminopolyethylene glycol ether corresponding to the following formula ##STR3## wherein R represents a C 6 -C 20 alkyl or alkenyl radical, R 1 and R 2 independently of one another represent a C 1 -C 8 alkyl radical, m and n independently of one another is a number of from about 3 to about 20, with the proviso that the sum of m and n is from about 5 to about 25.
Claim 3
Dependent Claim
22 words
The process in accordance with claim 1 wherein R, R 1 and R 2 is a straight-chain radical or a branched-chain radical.
Claim 4
Dependent Claim
31 words
The process in accordance with claim 1 wherein R is a straight-chain alkyl radical or an alkyl radical which is methyl-branched in the 2-position containing from 8 to 18 carbon atoms.
Claim 5
Dependent Claim
20 words
The process in accordance with claim 1 wherein R 1 and R 2 contain from 3 to 6 carbon atoms.
Claim 6
Dependent Claim
34 words
The process in accordance with claim 1 wherein m and n independently of one another have a value of from 3 to 10, with the proviso that their sum is from 5 to 15.
Claim 7
Dependent Claim
69 words
The process in accordance with claim 1 including contacting said solution with a foam-depressing effective amount of a polyethylene glycol ether obtained by the addition of from 4 to 20 parts by weight of ethylene oxide onto 1 part by weight of polyglycerol having a hydroxyl number of from about 900 to about 1200 and subsequent etherification of the free hydroxyl groups with a C 4 -C 8 alkylhalide.
Claim 8
Dependent Claim
31 words
The process in accordance with claim 6 wherein said polyethylene glycol ether and said alkylaminopolyethylene glycol ether are present in a ratio by weight of from about 1:1 to about 9:1.
Claim 9
Dependent Claim
28 words
The process in accordance with claim 1 wherein said detergent solution comprises a wetting agent, builder, complexing agent, alkali metal, acid, corrosion inhibitor, anti-microbial agent, and organic solvent.
Claim 10
Dependent Claim
142 words
A composition having foam-suppressing properties in an aqueous detergent solution, said composition comprising a terminal-group-blocked alkylaminopolyethylene glycol ether corresponding to the following formula ##STR4## wherein R represents a C 6 -C 20 alkyl or alkenyl radical, R 1 and R 2 independently of one another represent a C 1 -C 8 alkyl radical, m and n independently of one another is a number of from about 3 to about 20, with the proviso that the sum of m and n is from about 5 to about 25, and a polyethylene glycol ether obtained by the addition of from 4 to 20 parts by weight of weight of ethylene oxide onto 1 part by weight of polyglycerol having a hydroxyl number of from about 900 to about 1200 and subsequent etherification of the free hydroxyl groups with a C 4 -C 8 alkylhalide.
Claim 11
Dependent Claim
142 words
A composition having foam-suppressing properties in an aqueous detergent solution, said composition comprising a terminal-group-blocked alkylaminopolyethylene glycol ether corresponding to the following formula ##STR4## wherein R represents a C 6 -C 20 alkyl or alkenyl radical, R 1 and R 2 independently of one another represent a C 1 -C 8 alkyl radical, m and n independently of one another is a number of from about 3 to about 20, with the proviso that the sum of m and n is from about 5 to about 25, and a polyethylene glycol ether obtained by the addition of from 4 to 20 parts by weight of weight of ethylene oxide onto 1 part by weight of polyglycerol having a hydroxyl number of from about 900 to about 1200 and subsequent etherification of the free hydroxyl groups with a C 4 -C 8 alkylhalide.
Claim 12
Dependent Claim
22 words
The composition in accordance with claim 9 wherein R, R 1 and R 2 is a straight-chain radical or a branched-chain radical.
Claim 13
Dependent Claim
31 words
The composition in accordance with claim 9 wherein R is a straight-chain alkyl radical or an alkyl radical which is methyl-branched in the 2-position containing from 8 to 18 carbon atoms.
Claim 14
Dependent Claim
20 words
The composition in accordance with claim 9 wherein R 1 and R 2 contain from 3 to 6 carbon atoms.
Claim 15
Dependent Claim
34 words
The composition in accordance with claim 9 wherein m and n independently of one another have a value of from 3 to 10, with the proviso that their sum is from 5 to 15.
Claim 16
Dependent Claim
31 words
The composition in accordance with claim 9 wherein said polyethylene glycol ether and said alkylaminopolyethylene glycol ether are present in a ratio by weight of from about 1:1 to about 9:1.
References Cited (Backward Citations)
US4301083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |