US4130547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical modification of poly(bis-aryloxyphosphazene) with amines
Assignee: Bridgestone Firestone Inc
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Filing: 1977-10-20
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Granted: 1978-12-19
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Expires: 1997-10-20
Abstract
Abstract {PG,1 Improvement of the polyaryloxy and polyalkylaryloxy-phosphazenes such as those described in U.S. Pat. No. 3,853,794 is achieved by treating such polyphosphazenes with organic amines, preferably in solution. The polyphosphazenes are chemically modified as a result of such treatment and are converted from tough fibrous materials to relatively soft readily processed products.
Inventors
- 👤 John W. Fieldhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
168 words
A process for improving the physical properties of phosphazene polymers represented by the general formula ##STR4## in which Q and Q' are each selected from the group consisting of alkyl, alkylaryl and aryl and may be substituted or not, and some of which contain some unsaturation, and n is an integer between about 20 and about 50,000, which polymers are initially tough, fibrous materials which comprises; adding to the phosphazene polymer between 1 and 10 parts by weight of an amine per 100 parts by weight of phosphazene polymer, said amine being selected from the group consisting of quinolines and amines represented by the general formula ##STR5## wherein R is selected from the group consisting of H, alkyl, and cycloalkyl; R' is selected from the group consisting of aryl and H; R" is selected from the group consisting of aryl and aryl substituted in the ortho, meta or para position with --NHR or ##STR6## and recovering the amine modified phosphazene polymer as a relatively soft, readily processed elastomer.
Claim 2
Dependent Claim
168 words
A process for improving the physical properties of phosphazene polymers represented by the general formula ##STR4## in which Q and Q' are each selected from the group consisting of alkyl, alkylaryl and aryl and may be substituted or not, and some of which contain some unsaturation, and n is an integer between about 20 and about 50,000, which polymers are initially tough, fibrous materials which comprises; adding to the phosphazene polymer between 1 and 10 parts by weight of an amine per 100 parts by weight of phosphazene polymer, said amine being selected from the group consisting of quinolines and amines represented by the general formula ##STR5## wherein R is selected from the group consisting of H, alkyl, and cycloalkyl; R' is selected from the group consisting of aryl and H; R" is selected from the group consisting of aryl and aryl substituted in the ortho, meta or para position with --NHR or ##STR6## and recovering the amine modified phosphazene polymer as a relatively soft, readily processed elastomer.
Claim 3
Dependent Claim
34 words
The process of claim 1 in which the amine is added to the polymer while the polymer is in solution and the amine modified polymer is recovered by removing the solvent from the solution.
Claim 4
Dependent Claim
17 words
The process of claim 1 in which the amine is added to the polymer on a mill.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein the polyphosphazene is a poly(bis-aryloxyphosphazene).
Claim 6
Dependent Claim
23 words
The process of claim 1 wherein the amount of amine is between 2.5 and 5 parts by weight per 100 parts of polyphosphazene.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein the amine is a substituted 1,2-dihydro-2,2,4-trimethyl quinolines.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein the amine is a N,N'-disubstituted p-phenylenediamines.
Claim 9
Dependent Claim
12 words
The process of claim 1 wherein the amine is a substituted diphenylamines.
Claim 10
Dependent Claim
11 words
The process of claim 1 wherein the amine is 6-dodecyl-1,2-dihydro-2,2,4-trimethyl quinoline.
Claim 11
Dependent Claim
17 words
The process of claim 1 wherein the amine has a relatively low vapor pressure at 300° C.
Claim 12
Dependent Claim
11 words
An amine modified polyphosphazene produced by the process of claim 1.
Claim 13
Dependent Claim
11 words
An amine modified polyphosphazene produced by the process of claim 2.
Claim 14
Dependent Claim
11 words
An amine modified polyphosphazene produced by the process of claim 3.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |