US3579532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-phosphono-propionamide substituted ethylene glycols and imidazolidinones
Assignee: BASF Schweiz AG
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Filing: 1968-07-22
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Granted: 1971-05-18
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Expires: 1988-07-22
Abstract
Abstract THIS INVENTION PROVIDES PHOSPHORUS-CONTAINING PRODUCTS WHICH ARE OBTAINED BY REACTING A COMPOUND OF THE FORMULA (R1-O-)2-P(=O)-CH2-CH(-R2)-CO-NH2 WHEREIN R1 REPRESENTS A SUBSTITUENT BOUND THROUGH A CARBON ATOM TO THE OXYGEN ATOM AND R2 E.G. A HYDROGEN ATOM OR A METHYL GROUP, WITH GLYOXAL, FORMALDEHYDE, UREA AND AN ETHERIFYING AGENT LIKE A SATURATED OR UNSATURATED ALIPHATIC ALCOHOL. THESE PHOSPHORUS-CONTAINING REACTION PRODUCTS ARE USEFUL AS AGENTS FOR FLAMEPROOFING.
Inventors
- 👤 Hermann Nachbur
- 👤 Bernard Peter Stark
- 👤 Arthur Maeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:36
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/432; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/547; C07F9/645; C07F9/6503; C07F9/6506; D06M13/00; D06M13/244; D06M13/282; D06M13/288
Claims Analysis
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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 |