US3770855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing phosphate ester surface active compositions
Assignee: Witco Corp
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Filing: 1967-12-15
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Granted: 1973-11-06
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Expires: 1987-12-15
Abstract
Abstract PHOSPHORIC ACID ESTER COMPOSITIONS PREPARE BY PHOSPHORYLATING A NONIONIC SURFACE ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXYLIC ORGANIC COMPOUNDS CONTAINING AT LEAST 6 CARBON ATOMS AND A REACTIVE HYDROGEN ATOM, ALKYLENE OXIDE ADDUCTS OF SAID HYDROXYLIC ORGANIC COMPOUNDS SUBSTANTIALLY FREE OF POLYGLYCOL BYPRODUCTS AND MIXTURES THEREOF AND THEN HYDROLYZING THE PHOSPHATE ESTER WITH AT LEAST ABOUT 0.5% WEIGHT OF WATER EXHIBIT SUBSTANTIALLY IMPROVED PRODUCT COLOR AND CLARITY AND RESISTANCE TO DISCOLORATION AND ACID DRIFT IN STORAGE. THE PRODUCTS SO PRODUCED ARE USEFUL IN LIQUID DETERGENTS AND DRY-CLEANING COMPOSITIONS.
Inventors
- 👤 A Benson
- 👤 M Mausner
- 👤 W Carasik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:28
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C11; C11D; C11D1/00; C11D1/02; C11D1/34; C11D1/345; C11D3/00; C11D3/43
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |