Patent US3579453A successfully refreshed from Google Patents.
US3579453A
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US
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Alkali-soluble surfactant consisting of substituted succinic acid-nonionic ethoxylate blends
Assignee: Rohm and Haas Co
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Filing: 1968-11-12
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Granted: 1971-05-18
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Expires: 1988-11-12
Abstract
Abstract NONIONIC ETHOXYLATES SURFACTANTS, WHICH ARE KNOWN TO BE VERY DESIRABLE COMPONENTS IN HEAVY DUTY CLEANING PRODUCTS, SUFFER FROM THE FACT THAT THEY HAVE LIMITED SOLUBILITY IN SOLUTION OF ALKALINE ELECTROLYTES AND THUS ARE NOT SOLUBLE OF ALKALINE BUILDER CONCENTRATES. ADDITION OF MODERATE AMOUNTS OF SUBSTITUTED SUCCINIC ACIDS OVERCOMES THIS DEFECT AND PERMITS THE INCLUSION OF THESE NONIONICS IN BUILT LIQUID DETERGENT CONCENTRATES.
Inventors
- 👤 Jean Dupre
- 👤 Harrison Scott Killam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:14
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2082; C11D1/00; C11D1/02; C11D1/04; C11D1/08; C11D1/38; C11D1/42; C11D1/44; C11D1/66; C11D1/72; C11D1/83; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |