US4151127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for suppressing the foaming of detergents
Assignee: BASF SE
•
Filing: 1978-03-03
•
Granted: 1979-04-24
•
Expires: 1998-03-03
Abstract
Abstract Certain melamine derivatives are added as anti-foam agents to detergents, cleaners and rinses.
Inventors
- 👤 Johannes Perner
- 👤 Guenter Frey
- 👤 Herbert Helfert
- 👤 Rolf Fikentscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:55
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/28; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; C11D3/0005; C11D3/0026
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
93 words
A process for reducing the foaming of a detergent or rinse by adding an anti-foam agent, wherein from 0.1 to 3% by weight, based on the detergent or rinse, of one or more compounds of the formula I ##STR3## where from 25 to 100% of all radicals R are alkyl of 7 to 22 carbon atoms or acyl derived from an alkanecarboxylic acid or alkenecarboxylic acid of 7 to 22 carbon atoms and the remaining radicals R (if any) are alkyl of 1 to 4 carbon atoms, is employed as the anti-foam agent.
Claim 2
Dependent Claim
93 words
A process for reducing the foaming of a detergent or rinse by adding an anti-foam agent, wherein from 0.1 to 3% by weight, based on the detergent or rinse, of one or more compounds of the formula I ##STR3## where from 25 to 100% of all radicals R are alkyl of 7 to 22 carbon atoms or acyl derived from an alkanecarboxylic acid or alkenecarboxylic acid of 7 to 22 carbon atoms and the remaining radicals R (if any) are alkyl of 1 to 4 carbon atoms, is employed as the anti-foam agent.
Claim 3
Dependent Claim
22 words
A process as set forth in claim 1, wherein the sum of the carbon atoms in all the R radicals exceeds 80.
References Cited (Backward Citations)
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US2577418A
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US3600320A
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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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |