US4182837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphosphazene copolymers containing sulfone substituents
Assignee: Bridgestone Firestone Inc
•
Filing: 1978-10-20
•
Granted: 1980-01-08
•
Expires: 1998-10-20
Abstract
Abstract Polyphosphazene copolymers are prepared which contain units represented by the formulas: <IMAGE> wherein X is a sulfone radical selected from the group consisting of -CR1R2-SO2-R and <IMAGE> in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl and R1 and R2 are individually selected from the group consisting of hydrogen, alkyl radicals containing from 1 to 11 carbon atoms, cycloalkyl radicals containing from 3 to 11 carbon atoms and aryl radicals; wherein X' is an organic radical 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 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
2026-10-24 10:47
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
A polyphosphazene copolymer containing units represented by the formulas: ##STR14## wherein X is a sulfone radical selected from the group consisting of --CR 1 R 2 --SO 2 --R and ##STR15## in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl and R 1 and R 2 are individually selected from the group consisting of hydrogen, alkyl radicals containing from 1 to 11 carbon atoms, cycloalkyl radicals containing from 3 to 11 carbon atoms and aryl radicals; wherein X' is an organic radical 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
115 words
A polyphosphazene copolymer containing units represented by the formulas: ##STR14## wherein X is a sulfone radical selected from the group consisting of --CR 1 R 2 --SO 2 --R and ##STR15## in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl and R 1 and R 2 are individually selected from the group consisting of hydrogen, alkyl radicals containing from 1 to 11 carbon atoms, cycloalkyl radicals containing from 3 to 11 carbon atoms and aryl radicals; wherein X' is an organic radical 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
15 words
The copolymer of claim 1 wherein X is CH 3 SO 2 CH 2 --.
Claim 4
Dependent Claim
23 words
The copolymer of claim 1 wherein X is CH 3 SO 2 CH 2 -- and X' is CF 3 CH 2 O--.
Claim 5
Dependent Claim
23 words
The copolymer of claim 1 wherein X is CH 3 SO 2 CH 2 -- and X' is p-ClC 6 H 5 O--.
Claim 6
Dependent Claim
17 words
The copolymer of claim 1 wherein X is ##STR16## and X' is CF 3 CH 2 O--.
Claim 7
Independent Claim
164 words
A method of preparing polyphosphazene copolymers containing units represented by the formulas: ##STR17## wherein X is a sulfone radical selected from the group consisting of --CR 1 R 2 --SO 2 --R and ##STR18## in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl and R 1 and R 2 are individually selected from the group consisting of hydrogen, alkyl radicals containing from 1 to 11 carbon atoms, cycloalkyl radicals containing from 3 to 11 carbon atoms and aryl radicals and wherein X' is an organic radical selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups; said method comprising reacting a poly(dichlorophosphazene) polymer having the formula --(NPCl 2 ) n --, in which n is from 20 to 50,000, with a mixture consisting of a sulfone compound and an aliphatic alcohol, aromatic alcohol, amine or mercaptan or mixture thereof, in the presence of a tertiary amine.
Claim 8
Independent Claim
164 words
A method of preparing polyphosphazene copolymers containing units represented by the formulas: ##STR17## wherein X is a sulfone radical selected from the group consisting of --CR 1 R 2 --SO 2 --R and ##STR18## in which R is alkyl containing from 1 to 12 carbon atoms, cycloalkyl containing from 3 to 12 carbon atoms or aryl and R 1 and R 2 are individually selected from the group consisting of hydrogen, alkyl radicals containing from 1 to 11 carbon atoms, cycloalkyl radicals containing from 3 to 11 carbon atoms and aryl radicals and wherein X' is an organic radical selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto groups; said method comprising reacting a poly(dichlorophosphazene) polymer having the formula --(NPCl 2 ) n --, in which n is from 20 to 50,000, with a mixture consisting of a sulfone compound and an aliphatic alcohol, aromatic alcohol, amine or mercaptan or mixture thereof, in the presence of a tertiary amine.
Claim 9
Dependent Claim
19 words
The method of claim 6 wherein said mixture is a mixture of a sulfone compound and an aliphatic alcohol.
Claim 10
Dependent Claim
18 words
The method of claim 7 wherein said sulfone compound is dimethyl sulfone and said aliphatic alcohol is trifluoroethanol.
Claim 11
Dependent Claim
18 words
The method of claim 7 wherein said sulfone compound is 2,5-dihydrothiophene 1,1-dioxide and said aliphatic alcohol is trifluoroethanol.
Claim 12
Dependent Claim
19 words
The method of claim 6 wherein said mixture is a mixture of a sulfone compound and an aromatic alcohol.
Claim 13
Dependent Claim
18 words
The method of claim 10 wherein said sulfone compound is dimethyl sulfone and said aromatic alcohol is p-chlorophenol.
Claim 14
Dependent Claim
11 words
The method of claim 6 wherein said tertiary amine is triethylamine.
References Cited (Backward Citations)
US3164556A
Cited
US3591530A
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 |