Patent US3567801A successfully refreshed from Google Patents.
US3567801A
Expired / Lapsed
US
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Aminoalkyl phosphonates
Assignee: Stauffer Chemical Co
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Filing: 1967-11-03
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Granted: 1971-03-02
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Expires: 1987-11-03
Abstract
Abstract A COMPOSITION OF MATTER CONSISTING OF THE REACTION PRODUCT OF NITROGEN CONTAINING ALKYLPHOSPHONIC ACIDS AND AN ALKYLENE OXIDE. THE ALKYLENE OXIDE CAN BE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, BUTYLENE OXIDE, EPICHLOROHYDRIN, 1,1,1-TRICHLOROPROPYLENE OXIDE, STYRENE OXIDE, CYCLOHEXENE OXIDE, VINYL CYCLOHEXENE DIEPOXIDE AND MIXTURES THEREOF. THE COMPOSITIONS ARE USEFUL AS REACTIVE FLAME RETARDANTS SUCH AS IN THE PROCESS OF MAKING POLYURETHANE FOAM AND CAN BE USED IN MIXTURES OR IN LIEU OF POLYALCOHOLS.
Inventors
- 👤 Walter Stamm
- 👤 Silvio L Giolito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:34
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5075; C08G18/509; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/4009
Claims Analysis
Total Claims: 0
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |