US3711542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-methylol phosphazene compounds
Assignee: MOLECULON Inc 230 ALBANY STREET CAMBRIDE MASSACHUSETTS 02139 A DE CORP
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Filing: 1969-12-18
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Granted: 1973-01-16
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Expires: 1989-12-18
Abstract
Abstract PHOSPHAZENE COMPOUNDS CONTAINING N-METHYLOL GROUPS ARE PREPARED BY REACTING AN AMINO PHOSPHAZENE COMPOUND WITH FORMALDEHYDE IN THE PRESENCE OF A BASE TO PROVIDE A WATER-SOLUBLE N-METHYLOL PHOSPHAZENE COMPOUND. IN PARTICULAR, ANSA AND SPIRO-TYPE RING N-METHYLOL PHOSPHAZENE COMPOUNDS ARE PREPARED BY REACTING PHOSPHONITRILIC CHLORIDE WITH A C2-C3 ALKYLENE DIAMINE OR AMMONIA PLUS GLYOXAL AND REACTING EITHER PRODUCT WITH FORMALDEHYDE IN THE PRESENCE OF A BASE OF FORM THE NMETHYLOL RING COMPOUND. THE N-METHYLOL PHOSPHAZNE COMPOUNDS ARE EMPLOYED AS FABRIC FLAME RETARDANTS AND CREASE-PROOF MONOMERS IN CONDENSATION REACTIONS WITH CELLULOSIC-TYPE FABRICS.
Inventors
- 👤 E Hook
- 👤 G Berbeco
- 👤 A Obermayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:25
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673; C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; C07F9/65814; C08; C08G; C08G79/00; C08G79/02; C08G79/025; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |