US4053456A
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Poly(aryloxyphosphazene) copolymers
Assignee: Armstrong World Industries Inc
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Filing: 1976-02-27
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Granted: 1977-10-11
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Expires: 1996-02-27
Abstract
Abstract Poly(aryloxyphosphazene) copolymers and foams thereof having a significant portion of C 1 - C 4 alkoxyphenoxy groups are described. The copolymers consist of the units which occur in a nonregular fashion and are represented by the following general formulas: ##STR1## wherein R 1 represents a C 1 - C 4 linear or branched alkyl radical in the ortho-, meta-, or para-position, and R 2 represents hydrogen, a C 1 - C 10 linear or branched alkyl radical, or a C 1 - C 4 linear or branched alkoxy radical substituted on any sterically permissible position on the phenoxy group, with the proviso that when R 2 is alkoxy, OR 1 and R 2 are different. The copolymers of this invention may contain small amounts of randomly distributed units in addition to the repeating units described above, these additional units containing reactive sites enabling the properties of the copolymers to be modified by crosslinking and/or curing. The copolymers are elastomers, have desirable tensile strengths and may be used to form flexible or semirigid foams. The copolymers are extremely fire retardant and produce low smoke loads, or essentially no smoke, when heated in an open flame.
Inventors
- 👤 Ronald L. Dieck
- 👤 Edwin J. Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:57
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08G; C08G79/00; C08G79/02; C08G79/025; C08L; C08L85/00; C08L85/02; C08J2385/00; C08J2385/02; Y; Y10; Y10S; Y10S521/00; Y10S521/903; Y10S521/907; Y10S521/921
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
85 words
A copolymer having randomly distributed repeating units represented by the formulas: ##STR7## wherein R 1 is C 1 -C 4 linear or branched alkyl, and R 2 is hydrogen, C 1 -C 10 linear or branched alkyl or C 1 -C 4 linear or branched alkoxy, with the proviso that when R 2 is alkoxy, OR 1 and R 2 are different, the ratio of (OC 6 H 4 --OR 1 ):(OC 6 H 4 -R 2 ) being from about 1:6 to about 6:1.
Claim 2
Dependent Claim
85 words
A copolymer having randomly distributed repeating units represented by the formulas: ##STR7## wherein R 1 is C 1 -C 4 linear or branched alkyl, and R 2 is hydrogen, C 1 -C 10 linear or branched alkyl or C 1 -C 4 linear or branched alkoxy, with the proviso that when R 2 is alkoxy, OR 1 and R 2 are different, the ratio of (OC 6 H 4 --OR 1 ):(OC 6 H 4 -R 2 ) being from about 1:6 to about 6:1.
Claim 3
Dependent Claim
135 words
Copolymers, as in claim 1, having randomly distributed repeating units represented by the formulas ##STR8## wherein R 1 is individually CH 3 or n--C 4 H 6 , R 2 is individually hydrogen, C 1 -C 10 alkyl or C 1 -C 4 alkoxy with the proviso that when R 2 is alkoxy, OR 1 and R 2 are different, and W represents a monovalent radical containing a group capable of a cross-linking chemical reaction at moderate temperatures, said group being attached to a P atom by a --O-- linkage, the ratio of (OC 6 H 4 --OR 1 ):(OC 6 H 4 --R 2 ) being from about 1:6 to about 6:1, and the ratio of W:[(OC 6 H 4 --OR 1 )+(OC 6 H 4 --R 2 )] being less than about 1:5.
Claim 4
Dependent Claim
30 words
The process of curing the copolymers of claim 2 where W is present which comprises heating said copolymers at temperatures ranging from 200° to 350° F. utilizing sulfur-type curing agents.
Claim 5
Dependent Claim
11 words
The polymer of claim 2 cured with a sulfur-type curing agent.
Claim 6
Dependent Claim
26 words
The process of curing the copolymers of claim 1 which comprises heating said copolymers at temperatures ranging from 200° to 350° F. utilizing peroxide-type curing agents.
Claim 7
Dependent Claim
11 words
The polymer of claim 1 cured with a perioxide curing agent.
Claim 8
Dependent Claim
26 words
The process of curing the copolymers of claim 2 which comprises heating said copolymers at temperatures ranging from 200° to 350° F. utilizing peroxide-type curing agents.
Claim 9
Dependent Claim
11 words
The polymer of claim 2 cured with a perioxide curing agent.
Claim 10
Dependent Claim
14 words
Poly(aryloxyphosphazene) copolymers having the general formula: [NP(OC.sub.6 H.sub.4 --OR.sub.1).sub.a (OC.sub.6 H.sub.4 --R.sub.2).sub.b (W).sub.c ].sub.n
Claim 11
Dependent Claim
14 words
Poly(aryloxyphosphazene) copolymers having the general formula: [NP(OC.sub.6 H.sub.4 --OR.sub.1).sub.a (OC.sub.6 H.sub.4 --R.sub.2).sub.b (W).sub.c ].sub.n
Claim 12
Dependent Claim
109 words
wherein R 1 is individually C 1 -C 4 linear or branched alkyl; R 2 is individually hydrogen, C 1 --C 10 linear or branched alkyl or C 1 --C 4 linear or branched alkoxy, with the proviso that when R 2 is alkoxy, OR 1 and R 2 are different; W represents a monovalent radical containing a group capable of a cross-linking chemical reaction at moderate temperatures, said group being attached to a P atom by a --O-- linkage; n is from 20 to 2000, c≧o, a+b+c=2, the ratio of a:b is from about 1:6 to 6:1, and the ratio of c: (a+b) is less than about 1:5.
Claim 13
Dependent Claim
109 words
wherein R 1 is individually C 1 -C 4 linear or branched alkyl; R 2 is individually hydrogen, C 1 --C 10 linear or branched alkyl or C 1 --C 4 linear or branched alkoxy, with the proviso that when R 2 is alkoxy, OR 1 and R 2 are different; W represents a monovalent radical containing a group capable of a cross-linking chemical reaction at moderate temperatures, said group being attached to a P atom by a --O-- linkage; n is from 20 to 2000, c≧o, a+b+c=2, the ratio of a:b is from about 1:6 to 6:1, and the ratio of c: (a+b) is less than about 1:5.
Claim 14
Dependent Claim
14 words
The copolymers of claim 9 wherein c=o and R 1 is CH 3 .
Claim 15
Dependent Claim
16 words
The copolymers of claim 9 wherein c=o and R 1 is n--C 4 H 9 .
Claim 16
Dependent Claim
15 words
The copolymers of claim 10 wherein the ratio of a:b is from 1:4 to 4:1.
Claim 17
Dependent Claim
15 words
The copolymers of claim 11 wherein the ratio of a:b is from 1:4 to 4:1.
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |