US4247680A
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Polyphosphazene copolymers containing alkyl borate substituents
Assignee: Bridgestone Firestone Inc
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Filing: 1978-09-08
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Granted: 1981-01-27
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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 --OB(OR) 2 in which R is 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, aryloxy, amino and mercapto groups. The alkyl groups may vary in carbon chain length within the borate or all be the same. 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. The copolymers of the invention also crosslink at room temperature in the presence of water yielding a solvent resistant film.
Inventors
- 👤 William L. Hergenrother
- 👤 Adel F. Halasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:23
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
69 words
A polyphosphazene copolymer containing randomly distributed units represented by the formulas: ##STR9## wherein X is --OB(OR) 2 in which R is a branched, straight chain or cyclic alkyl group containing 1 to 12 carbon atoms or mixtures thereof, and wherein X' is selected from the group consisting of substituted and unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein said copolymer contains from 20 to 50,000 of said units.
Claim 2
Dependent Claim
69 words
A polyphosphazene copolymer containing randomly distributed units represented by the formulas: ##STR9## wherein X is --OB(OR) 2 in which R is a branched, straight chain or cyclic alkyl group containing 1 to 12 carbon atoms or mixtures thereof, and wherein X' is selected from the group consisting of substituted and unsubstituted alkoxy, aryloxy, amino and mercapto groups and wherein said copolymer contains from 20 to 50,000 of said units.
Claim 3
Dependent Claim
11 words
The copolymer of claim 1 wherein both R groups are identical.
Claim 4
Dependent Claim
11 words
The copolymer of claim 1 wherein the R groups are dissimilar.
Claim 5
Dependent Claim
30 words
The copolymer of claim 1 wherein the X substituent is between about 0.1 and about 55 mole percent and the X' substituent is between about 45 and 99.1 mole percent.
Claim 6
Dependent Claim
26 words
The copolymer of claim 1 wherein the X substituent is --OB(OC 8 H 17 ) 2 and the X' substituent is --OCH 2 CF 3 .
Claim 7
Dependent Claim
26 words
The copolymer of claim 1 wherein the X substituent is --OB(OC 8 H 17 ) 2 and the X' substituent is --OC 6 H 4 Cl.
Claim 8
Dependent Claim
24 words
The copolymer of claim 1 wherein the X substituent is --OB(OCH 3 ) 2 and the X' substituent is --OCH 2 CF 3 .
Claim 9
Independent Claim
114 words
A method of preparing polyphosphazene copolymers containing randomly distributed units represented by the formulas: ##STR10## wherein X is --OB(OR) 2 in which R is a straight, branched chain or 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, aryloxy, amino or mercapto groups; said method comprising reacting a poly(dichlorophosphazene) polymer having the formula --(NPCl 2 ) n --, wherein n is from 20 to 50,000, with a mixture consisting of a trialkyl borate and a substituted or unsubstituted aliphatic alcohol, aromatic alcohol, an amino compound or a mercaptan compound in the presence of a tertiary amine.
Claim 10
Independent Claim
114 words
A method of preparing polyphosphazene copolymers containing randomly distributed units represented by the formulas: ##STR10## wherein X is --OB(OR) 2 in which R is a straight, branched chain or 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, aryloxy, amino or mercapto groups; said method comprising reacting a poly(dichlorophosphazene) polymer having the formula --(NPCl 2 ) n --, wherein n is from 20 to 50,000, with a mixture consisting of a trialkyl borate and a substituted or unsubstituted aliphatic alcohol, aromatic alcohol, an amino compound or a mercaptan compound in the presence of a tertiary amine.
Claim 11
Dependent Claim
13 words
The method of claim 8 wherein said trialkyl borate is tris-2-ethyl hexyl borate.
Claim 12
Dependent Claim
12 words
The method of claim 8 where said trialkyl borate is trimethyl borate.
Claim 13
Dependent Claim
31 words
The method of claim 8 wherein the X substituent is between about 0.5 and about 55 mole percent and the X' substituent is between about 45 and about 99.1 mole percent.
Claim 14
Dependent Claim
15 words
The method of claim 8 where said mixture consists of tris-2-ethyl hexyl borate and trifluoroethanol.
Claim 15
Dependent Claim
15 words
The method of claim 1 wherein said mixture consists of tris-2-ethyl hexyl borate and p-chlorophenol.
Claim 16
Dependent Claim
14 words
The method of claim 8 wherein said mixture consists of trimethyl borate and trifluoroethanol.
Claim 17
Dependent Claim
11 words
The method of claim 8 wherein said tertiary amine is triethylamine.
References Cited (Backward Citations)
US3164556A
Cited
US4040843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |