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US4221900A
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Polyphosphazene copolymers containing substituents derived from substituted 2-nitroethanols
Assignee: Bridgestone Firestone Inc
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Filing: 1979-02-16
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Granted: 1980-09-09
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Expires: 1999-02-16
Abstract
Abstract Polyphosphazene polymers are prepared which contain units represented by the formulas: ##STR1## wherein X is ##STR2## in which R and R 1 are selected from the group consisting of alkyl groups containing from 1 to 12 carbon atoms, cycloalkyl groups containing from 3 to 12 carbon atoms and aryl groups wherein X' 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 copolymers of the invention can be utilized to form films and may also be utilized in applications such as moldings, coatings, foams and the like.
Inventors
- 👤 William L. Hergenrother
- 👤 Adel F. Halasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:24
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
A polyphosphazene copolymer containing units represented by the formulas: ##STR11## wherein X is ##STR12## in which R and R 1 are selected from the group consisting of alkyl groups containing from 1 to 12 carbon atoms, cycloalkyl groups containing from 3 to 12 carbon atoms and aryl groups; wherein X' 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
72 words
A polyphosphazene copolymer containing units represented by the formulas: ##STR11## wherein X is ##STR12## in which R and R 1 are selected from the group consisting of alkyl groups containing from 1 to 12 carbon atoms, cycloalkyl groups containing from 3 to 12 carbon atoms and aryl groups; wherein X' 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
9 words
The copolymer of claim 1 wherein X is ##STR13##
Claim 4
Dependent Claim
17 words
The copolymer of claim 1 wherein X is ##STR14## and X' is CF 3 CH 2 O--.
Claim 5
Dependent Claim
17 words
The copolymer of claim 1 wherein X is ##STR15## and X is p--ClC 6 H 5 O--.
Claim 6
Independent Claim
118 words
A method of preparing polyphosphazene copolymers containing units represented by the formulas: ##STR16## wherein X is ##STR17## in which R and R 1 are selected from the group consisting of alkyl groups containing from 1 to 12 carbon atoms, cycloalkyl groups containing from 3 to 12 carbon atoms and aryl groups; wherein X' is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein ≦20 (a+b+c)≦50,000; said method comprising reacting a poly(dichlorophosphazene) having the formula --(NPCL 2 ) n --, in which n is from 20 to 50,000 with a substituted 2-nitroethanol compound and an aliphatic alcohol, aromatic alcohol, amino compound or mercaptan compound in the presence of a tertiary amine.
Claim 7
Independent Claim
118 words
A method of preparing polyphosphazene copolymers containing units represented by the formulas: ##STR16## wherein X is ##STR17## in which R and R 1 are selected from the group consisting of alkyl groups containing from 1 to 12 carbon atoms, cycloalkyl groups containing from 3 to 12 carbon atoms and aryl groups; wherein X' is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein ≦20 (a+b+c)≦50,000; said method comprising reacting a poly(dichlorophosphazene) having the formula --(NPCL 2 ) n --, in which n is from 20 to 50,000 with a substituted 2-nitroethanol compound and an aliphatic alcohol, aromatic alcohol, amino compound or mercaptan compound in the presence of a tertiary amine.
Claim 8
Dependent Claim
11 words
The method of claim 5 wherein said substituted 2-nitroethanol is 2,2-dimethyl-2-nitroethanol.
Claim 9
Dependent Claim
17 words
The method of claim 5 wherein said substituted 2-nitroethanol is 2,2-dimethyl-2-nitroethanol and said aliphatic alcohol is trifluoroethanol.
Claim 10
Dependent Claim
17 words
The method of claim 6 wherein said substituted 2-nitroethanol is 2,2-dimethyl-2-nitroethanol and said aromatic alcohol is p-chlorophenol.
Claim 11
Dependent Claim
11 words
The method of claim 5 wherein said tertiary amine is triethylamine.
References Cited (Backward Citations)
US3370020A
Cited
DE2712542A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |