US4544536A
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Polychlorophosphazenes and process for their preparation
Assignee: INSTUTUT MONDIAL DU PHOSPHATE BLD de la GRANDE CEINTURE ROUTE D'EL JADIDA CASABLANCA A CORP OF MOROCCO
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Filing: 1983-03-21
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Granted: 1985-10-01
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Expires: 2003-03-21
Abstract
Abstract The present invention relates to novel polychlorophosphazenes and to the process for their preparation. These polychlorophosphazenes of the general formula: Cl.sub.2 (O)P[NPCl.sub.2 ].sub.n Cl are prepared by the polycondensation of P trichloro-N dichlorophosphoryl-monophosphazene with the controlled release of POCl 3 according to the equation: ##STR1## The novel polychlorophosphazenes so obtained are useful as antiflame materials, as coatings, as fertilizers, etc.
Inventors
- 👤 Roger De Jaeger
- 👤 Moncef Helioui
- 👤 Emile Puskaric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:54
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025; C01; C01B; C01B21/00; C01B21/082; C01B21/097; C01B21/098; C01B21/0986
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
40 words
Linear polychlorophosphazenes resulting from heating P-trichloro-N-dichlorophosphoryl-monophosphazene of formula II ##STR6## with release of a controlled amount of POCl 3 to recover a practically pure linear polychlorophosphazene of the general formula: ##STR7## wherein n is equal to or greater than 4.
Claim 2
Dependent Claim
40 words
Linear polychlorophosphazenes resulting from heating P-trichloro-N-dichlorophosphoryl-monophosphazene of formula II ##STR6## with release of a controlled amount of POCl 3 to recover a practically pure linear polychlorophosphazene of the general formula: ##STR7## wherein n is equal to or greater than 4.
Claim 3
Dependent Claim
83 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P-trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR8## in accordance with the following equation III: ##STR9## with a controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at a temperature equal to or higher than 180° C.
Claim 4
Dependent Claim
83 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P-trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR8## in accordance with the following equation III: ##STR9## with a controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at a temperature equal to or higher than 180° C.
Claim 5
Dependent Claim
22 words
A process according to claim 2, wherein the controlled polycondensation is carried out at least in part in an inert gas atmosphere.
Claim 6
Dependent Claim
97 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I: Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR10## in accordance with the following equation III: ##STR11## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at temperatures of at least 150° C. under reduced pressure in the range of from about 0.1 to 250 mmHg throughout the entire process.
Claim 7
Dependent Claim
97 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I: Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR10## in accordance with the following equation III: ##STR11## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at temperatures of at least 150° C. under reduced pressure in the range of from about 0.1 to 250 mmHg throughout the entire process.
Claim 8
Dependent Claim
26 words
A process according to claim 4, wherein said polycondensation is performed under reduced pressure in the range of from about 0.5 mmHg to about 150 mmHg.
Claim 9
Dependent Claim
99 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I: Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR12## in accordance with the following equation III: ##STR13## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at temperatures ranging from 170° C. to 350° C. under reduced pressure in the range of from about 0.1 to 250 mmHg throughout the entire process.
Claim 10
Dependent Claim
99 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I: Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR12## in accordance with the following equation III: ##STR13## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at temperatures ranging from 170° C. to 350° C. under reduced pressure in the range of from about 0.1 to 250 mmHg throughout the entire process.
Claim 11
Dependent Claim
26 words
A process according to claim 6, wherein said polycondensation is performed under reduced pressure in the range of from about 0.5 mmHg to about 150 mmHg.
Claim 12
Dependent Claim
87 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I: Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR14## in accordance with the following equation III: ##STR15## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at temperatures of at least 100° C. under reduced pressure throughout the entire process.
Claim 13
Dependent Claim
87 words
Process for the preparation of the novel linear polychlorophosphazenes of formula I: Cl.sub.2 (O)P [NPCl.sub.2 ].sub.n Cl I said process comprising the polycondensation by heating of P trichloro-N-dichlorophosphoryl-monophosphazene of the following formula II: ##STR14## in accordance with the following equation III: ##STR15## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene of formula I, of controlled degree of condensation, wherein n≧4, said polycondensation by heating being carried out at temperatures of at least 100° C. under reduced pressure throughout the entire process.
Claim 14
Dependent Claim
98 words
Process for the preparation of linear polychlorophosphazenes of the formula Cl 2 (O)P(NPCl 2 ) n Cl, said process comprising polycondensation by heating of P trichloro-N-dichlorophosphorymonophosphazene of the formula II: ##STR16## in accordance with the following equation III: ##STR17## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene, of controlled degree of condensation, wherein n is greater than or equal to 4, said polycondensation by heating being carried out at temperatures ranging from about 180° C. to about 210° C. in the pressure range of from about 100 mmHg to about atmospheric pressure.
Claim 15
Dependent Claim
98 words
Process for the preparation of linear polychlorophosphazenes of the formula Cl 2 (O)P(NPCl 2 ) n Cl, said process comprising polycondensation by heating of P trichloro-N-dichlorophosphorymonophosphazene of the formula II: ##STR16## in accordance with the following equation III: ##STR17## with controlled release of POCl 3 , to obtain quantitatively a practically pure polychlorophosphazene, of controlled degree of condensation, wherein n is greater than or equal to 4, said polycondensation by heating being carried out at temperatures ranging from about 180° C. to about 210° C. in the pressure range of from about 100 mmHg to about atmospheric pressure.
References Cited (Backward Citations)
EP0026685A1
Cited
US4377558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |