Patent US3344087A successfully refreshed from Google Patents.
US3344087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric phosphorus-nitrogen compounds and the production thereof
Assignee: Olin Corp
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Filing: 1961-03-31
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Granted: 1967-09-26
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
- 👤 Becke Margot
- 👤 Neubauer Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:19
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
PROCESS FOR PREPARING POLYMERIC, THERMOPLASTIC PHOSPHORUS-NITROGEN COMPOUNDS BY MIXING A PHOSPHONITRILE HALIDE WITH A FIRST CARRIER MEDIUM SELECTED FROM THE GROUP CONSISTING OF TETRAHYDROFURAN, DIOXANE, ETHER AND BENZENE; SEPARATELY PLACING AN ALIPHATIC NITROGEN COMPOUND HAVING THE FORMULA R1NH1RN2HR2 WHERE R IS A DIVALENT SATURATED HYDROCARBON OF 5 TO 13 CARBON ATOMS AND R1 AND R2 ARE HYDROGEN IN A SECOND CARRIER MEDIUM SELECTED FROM THE GROUP CONSISTING OF WATER AND SAID FIRST CARRIER MEDIA; SAID ALIPHATIC NITROGEN COMPOUND BEING EMPLOYED IN THE RANGE OF 0.25 TO 3.0 GRAM MOLES PER GRAM ATOM OF PHOSPHORUS IN SAID PHOSPHONITRILE HALIDE; MIXING TOGETHER SAID PHOSPHONITRILE HALIDE-CONTAINING FIRST CARRIER MEDIUM AND SAID ALIPHATIC NITROGEN COMPOUND-CONTAINING SECOND CARRIER MEDIUM; AGITATING SAID MIXED MEDIA TO PRODUCE SAID POLYMERIC, THERMOPLASTIC PHOSPHORUSNITROGEN COMPOUND AND SEPARATING SAID POLYMERIC, THERMOPLASTIC PHOSPHORUS-NITROGEN COMPOUND FROM SAID MEDIA.
Claim 2
Dependent Claim
135 words
PROCESS FOR PREPARING POLYMERIC, THERMOPLASTIC PHOSPHORUS-NITROGEN COMPOUNDS BY MIXING A PHOSPHONITRILE HALIDE WITH A FIRST CARRIER MEDIUM SELECTED FROM THE GROUP CONSISTING OF TETRAHYDROFURAN, DIOXANE, ETHER AND BENZENE; SEPARATELY PLACING AN ALIPHATIC NITROGEN COMPOUND HAVING THE FORMULA R1NH1RN2HR2 WHERE R IS A DIVALENT SATURATED HYDROCARBON OF 5 TO 13 CARBON ATOMS AND R1 AND R2 ARE HYDROGEN IN A SECOND CARRIER MEDIUM SELECTED FROM THE GROUP CONSISTING OF WATER AND SAID FIRST CARRIER MEDIA; SAID ALIPHATIC NITROGEN COMPOUND BEING EMPLOYED IN THE RANGE OF 0.25 TO 3.0 GRAM MOLES PER GRAM ATOM OF PHOSPHORUS IN SAID PHOSPHONITRILE HALIDE; MIXING TOGETHER SAID PHOSPHONITRILE HALIDE-CONTAINING FIRST CARRIER MEDIUM AND SAID ALIPHATIC NITROGEN COMPOUND-CONTAINING SECOND CARRIER MEDIUM; AGITATING SAID MIXED MEDIA TO PRODUCE SAID POLYMERIC, THERMOPLASTIC PHOSPHORUSNITROGEN COMPOUND AND SEPARATING SAID POLYMERIC, THERMOPLASTIC PHOSPHORUS-NITROGEN COMPOUND FROM SAID MEDIA.
Claim 3
Dependent Claim
32 words
THE POLYMERIC, THERMOPLASTIC PHOSPHORUS-NITROGEN COMPOUND PREPARED BY THE PROCESS OF CLAIM 1 IN WHICH SAID PHOSPHONITRILE HALIDE IS THE TETRAMER OF THE FORMULA (PNCL2)4, AND SAID ALIPHTIC NITROGEN COMPOUND IS HEXAMETHYLENE DIAMINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |