US4107146A
Expired / Lapsed
US
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Curable aryloxyphosphazene polymers
Assignee: Armstrong World Industries Inc
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Filing: 1977-02-14
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Granted: 1978-08-15
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Expires: 1997-02-14
Abstract
Abstract Polymers comprising randomly repeating units of the general formula ##STR1## wherein R 1 is linear or branched C 1 -C 10 alkoxy, R 2 is linear or branched C 1 -C 10 alkyl, hydrogen or halogen, and W is C 2 to C 10 alkenyl-substituted aryloxy. These novel polymers are elastomers and may be used to form flexible and semirigid foams and coatings. They display good fire retardance and low smoke levels.
Inventors
- 👤 Ronald L. Dieck
- 👤 Alan B. Magnusson
- 👤 Edwin J. Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:30
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; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
A cured phosphazene copolymer prepared by heating in admixture with a sulfur-type curing agent a copolymer having randomly distributed repeating units represented by the formulas ##STR3## wherein R 1 is C 1 to C 10 linear or branched alkoxy, R 2 is hydrogen, C 1 -C 10 linear or branched alkyl or halogen, and W represents a monovalent radical containing a group capable of a crosslinking chemical reaction at moderate temperatures, said group being attached to a P atom by a --O-- linkage.
Claim 2
Dependent Claim
83 words
A cured phosphazene copolymer prepared by heating in admixture with a sulfur-type curing agent a copolymer having randomly distributed repeating units represented by the formulas ##STR3## wherein R 1 is C 1 to C 10 linear or branched alkoxy, R 2 is hydrogen, C 1 -C 10 linear or branched alkyl or halogen, and W represents a monovalent radical containing a group capable of a crosslinking chemical reaction at moderate temperatures, said group being attached to a P atom by a --O-- linkage.
Claim 3
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 sulfur-type curing agents.
Claim 4
Dependent Claim
114 words
Cured poly (aryloxyphosphazene) copolymers prepared by heating in admixture with a sulfur-type curing agent a copolymer having the general formula NP[(OC.sub.6 H.sub.4 -R.sub.1).sub.a (OC.sub.6 H.sub.4 -R.sub.2).sub.b (W).sub.c ].sub.n wherein R 1 is C 1 -C 10 linear or branched alkoxy; R 2 is hydrogen, C 1 -C 10 linear or branched alkyl or halogen; W represents a monovalent radical containing a group capable of a crosslinking chemical reaction at moderate temperatures, said group being attached to a P atom by a --O--linkage; n is from 20 to 2000, a or b but not c≧O, and a+b+c=2, the ratio of a:b from about 1:6 to 6:1, and the ratio of c: (a+b) 9:10 to 5:100.
Claim 5
Dependent Claim
114 words
Cured poly (aryloxyphosphazene) copolymers prepared by heating in admixture with a sulfur-type curing agent a copolymer having the general formula NP[(OC.sub.6 H.sub.4 -R.sub.1).sub.a (OC.sub.6 H.sub.4 -R.sub.2).sub.b (W).sub.c ].sub.n wherein R 1 is C 1 -C 10 linear or branched alkoxy; R 2 is hydrogen, C 1 -C 10 linear or branched alkyl or halogen; W represents a monovalent radical containing a group capable of a crosslinking chemical reaction at moderate temperatures, said group being attached to a P atom by a --O--linkage; n is from 20 to 2000, a or b but not c≧O, and a+b+c=2, the ratio of a:b from about 1:6 to 6:1, and the ratio of c: (a+b) 9:10 to 5:100.
Claim 6
Dependent Claim
25 words
The copolymers of claim 3 wherein R 1 is OCH 3 and W is OC 6 H 4 -2-OCH 3 -4-CH 2 CH═CH 2 .
Claim 7
Dependent Claim
31 words
The copolymers of claim 3 wherein R 1 is OCH 3 , R 2 is t-C 4 H 9 and W is OC 6 H 4 -2-CH 2 CH═CH 2 .
Claim 8
Dependent Claim
15 words
The copolymers of claim 4 wherein the ratio of c:(a+b) is from 1:10 to 3:100.
Claim 9
Dependent Claim
15 words
The copolymers of claim 5 wherein the ratio of c:(a+b) is from 1:10 to 3:100.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |