US4182835A
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Polyphosphazene copolymers containing nitroalkyl substituents
Assignee: Bridgestone Firestone Inc
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Filing: 1978-09-08
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Granted: 1980-01-08
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Expires: 1998-09-08
Abstract
Abstract Polyphosphazene copolymers are prepared which contain randomly distributed units represented by the formulas: ##STR1## wherein X is --CNO 2 R 1 R 2 in which R 1 and R 2 are H, a branched, straight chain or cyclic alkyl group containing from 1 to 12 carbon atoms or mixtures thereof, and wherein X' is selected from the group consisting of substituted and unsubstituted alkoxy, alkenyloxy, aryloxy, alkenylaryloxy, amino and mercapto groups or mixtures thereof. In the copolymer units represented by the above formulas, all X substituent groups may be the same or they may be mixed and all X' substituent groups may be the same or mixed. In the mixtures, the X substituent groups may be mixtures of different --CNO 2 R 1 R 2 groups and the X' substituent groups may be mixtures of alkoxy, alkenyloxy, aryloxy, alkenylaryloxy, amino and mercapto groups. The copolymers of the invention can be utilized to form protective films and may also be utilized in applications such as 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
2026-11-07 23:40
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
A polyphosphazene copolymer containing randomly distributed units represented by the formulas: ##STR8## wherein X is --CNO 2 R 1 R 2 in which R 1 and R 2 are selected from the group consisting of H, a branched, straight chain and cyclic alkyl group containing from 1 to 12 carbon atoms or mixtures thereof, and where X' is selected from the group consisting of substituted and unsubstituted alkoxy, alkenyloxy, aryloxy alkenylaryloxy, amino and mercapto groups or mixtures thereof.
Claim 2
Dependent Claim
78 words
A polyphosphazene copolymer containing randomly distributed units represented by the formulas: ##STR8## wherein X is --CNO 2 R 1 R 2 in which R 1 and R 2 are selected from the group consisting of H, a branched, straight chain and cyclic alkyl group containing from 1 to 12 carbon atoms or mixtures thereof, and where X' is selected from the group consisting of substituted and unsubstituted alkoxy, alkenyloxy, aryloxy alkenylaryloxy, amino and mercapto groups or mixtures thereof.
Claim 3
Dependent Claim
13 words
The copolymer of claim 1 wherein R 1 and R 2 are identical.
Claim 4
Dependent Claim
14 words
The copolymer of claim 1 wherein the R 1 and R 2 are dissimilar.
Claim 5
Dependent Claim
26 words
The copolymer of claim 1 wherein the X substituent is --CNO 2 C 2 H 6 and the X' substituent is --OCH 2 CF 3 .
Claim 6
Dependent Claim
26 words
The copolymer of claim 1 wherein the X substituent is --CNO 2 C 2 H 6 and the X' substituent is --OC 6 H 4 Cl.
Claim 7
Independent Claim
135 words
A method of preparing polyphosphazene copolymers containing randomly distributed units represented by the formulas: ##STR9## wherein X is --CNO 2 R 1 R 2 in which R 1 and R 2 are selected from the group consisting of H, a branched, straight chain and cyclic alkyl radical containing from 1 to 12 carbon atoms or mixtures thereof, and wherein X' is selected from the group consisting of substituted and unsubstituted alkoxy, alkenyloxy, aryloxy, alkenylaryloxy, amino and mercapto groups or mixtures thereof; said method comprising reacting a poly(dichlorophosphazene) polymer having the formula --(NPCl 2 )--, wherein n is from 20 to 50,000, with a mixture consisting of a nitroalkane and a group consisting of a substituted or unsubstituted aliphatic or aromatic alcohol, an amino compound and a mercaptan compound in the presence of a tertiary amine.
Claim 8
Independent Claim
135 words
A method of preparing polyphosphazene copolymers containing randomly distributed units represented by the formulas: ##STR9## wherein X is --CNO 2 R 1 R 2 in which R 1 and R 2 are selected from the group consisting of H, a branched, straight chain and cyclic alkyl radical containing from 1 to 12 carbon atoms or mixtures thereof, and wherein X' is selected from the group consisting of substituted and unsubstituted alkoxy, alkenyloxy, aryloxy, alkenylaryloxy, amino and mercapto groups or mixtures thereof; said method comprising reacting a poly(dichlorophosphazene) polymer having the formula --(NPCl 2 )--, wherein n is from 20 to 50,000, with a mixture consisting of a nitroalkane and a group consisting of a substituted or unsubstituted aliphatic or aromatic alcohol, an amino compound and a mercaptan compound in the presence of a tertiary amine.
Claim 9
Dependent Claim
10 words
The method of claim 6 wherein said nitroalkane is 2-nitropropane.
Claim 10
Dependent Claim
13 words
The method of claim 6 wherein said mixture consists of 2-nitropropane and trifluoroethanol.
Claim 11
Dependent Claim
13 words
The method of claim 6 wherein said mixture consists of 2-nitropropane and p-chlorophenol.
Claim 12
Dependent Claim
11 words
The method of claim 6 wherein said tertiary amine is triethylamine.
References Cited (Backward Citations)
DE2712542A1
Cited
US4107108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |