US4223102A
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Polyphosphazene polymers containing substituents derived from alkyl or aryl carbazates
Assignee: Bridgestone Firestone Inc
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Filing: 1978-10-20
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Granted: 1980-09-16
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Expires: 1998-10-20
Abstract
Abstract Polyphosphazene polymers are prepared which contain units represented by the formulas: <IMAGE> wherein X is -NHNHCOOR in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing 3 to 12 carbon atoms or aryl; wherein X' is X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein 20</=(a+b+c)</=50,000 per polymer. The polymers of the invention can be utilized to form films and may also be utilized in applications for moldings, coatings and the like.
Inventors
- 👤 William L. Hergenrother
- 👤 Adel F. Halasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
62 words
A polyphosphazene polymer containing units represented by the formulas: ##STR6## wherein X is --NHNHCOOR in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl; wherein X' is X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein 20≦(a+b+c)≦50,000 per polymer.
Claim 2
Dependent Claim
62 words
A polyphosphazene polymer containing units represented by the formulas: ##STR6## wherein X is --NHNHCOOR in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl; wherein X' is X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein 20≦(a+b+c)≦50,000 per polymer.
Claim 3
Dependent Claim
13 words
The polymer of claim 1 wherein X is --NHNHCOOC 2 H 5 .
Claim 4
Dependent Claim
20 words
The polymer of claim 1 wherein X is --NHNHCOOC 2 H 5 and X' is --OCH 2 CF 3 .
Claim 5
Dependent Claim
20 words
The polymer of claim 1 wherein X is --NHNHCOOC 2 H 5 and X' is p-ClC 6 H 5 O--.
Claim 6
Independent Claim
150 words
A method of preparing polyphosphazene polymers containing units represented by the formulas: ##STR7## wherein X is --NHNHCOOR in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl; wherein X' is X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein 20≦(a+b+c)≦50,000 per polymer; which method comprises reacting a polydichlorophosphazene polymer having the formula --(NPCl 2 ) n --, in which n is from 20 to 50,000, with an alkyl or aryl carbazate having the formula NH 2 NHCOOR in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl or a mixture consisting of said carbazate and an aliphatic alcohol, aromatic alcohol, amino compound or mercaptan compound, or mixture thereof, in the presence of a tertiary amine.
Claim 7
Independent Claim
150 words
A method of preparing polyphosphazene polymers containing units represented by the formulas: ##STR7## wherein X is --NHNHCOOR in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl; wherein X' is X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein 20≦(a+b+c)≦50,000 per polymer; which method comprises reacting a polydichlorophosphazene polymer having the formula --(NPCl 2 ) n --, in which n is from 20 to 50,000, with an alkyl or aryl carbazate having the formula NH 2 NHCOOR in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl or a mixture consisting of said carbazate and an aliphatic alcohol, aromatic alcohol, amino compound or mercaptan compound, or mixture thereof, in the presence of a tertiary amine.
Claim 8
Dependent Claim
12 words
The method of claim 5 wherein said alkyl carbazate is ethyl carbazate.
Claim 9
Dependent Claim
19 words
The method of claim 5 wherein said mixture is a mixture of an alkyl carbazate and an aliphatic alcohol.
Claim 10
Dependent Claim
18 words
The method of claim 7 wherein said alkyl carbazate is ethyl carbazate and said aliphatic alcohol is trifluoroethanol.
Claim 11
Dependent Claim
19 words
The method of claim 5 wherein said mixture is a mixture of an alkyl carbazate and an aromatic alcohol.
Claim 12
Dependent Claim
18 words
The method of claim 9 wherein said alkyl carbazate is ethyl carbazate and said aromatic alcohol is p-chlorophenol.
Claim 13
Dependent Claim
11 words
The method fo claim 5 wherein said tertiary amine is triethylamine.
References Cited (Backward Citations)
US2214769A
Cited
US3893980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |