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US4026838A
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Smoke-suppressant additives for polyphosphazenes
Assignee: Armstrong World Industries Inc
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Filing: 1976-08-06
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Granted: 1977-05-31
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Expires: 1996-08-06
Abstract
Abstract Smoke suppressant additives for poly(aryloxyphosphazene) homopolymers, copolymers and foams thereof are described. Smoke suppression occurs by the incorporation of an effective amount of a normally solid carboxylic acid.
Inventors
- 👤 Ronald L. Dieck
- 👤 Edwin J. Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:28
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0023; C01; C01B; C01B21/00; C01B21/082; C01B21/097; C01B21/098; C01B21/0986; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/13; C08K5/16; C08K5/17; C08K5/18; C08K5/32; C08K5/36; C08K5/45; C08J2385/00; C08J2385/02; Y; Y10; Y10S; Y10S521/00; Y10S521/903
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
35 words
A smoke suppressed poly(aryloxyphosphazene) foam composition comprising a poly(aryloxyphosphazene) foam material; and incorporated in said foam in an amount sufficient to reduce the smoke levels of said foam when burned, a normally solid carboxylic acid.
Claim 2
Dependent Claim
35 words
A smoke suppressed poly(aryloxyphosphazene) foam composition comprising a poly(aryloxyphosphazene) foam material; and incorporated in said foam in an amount sufficient to reduce the smoke levels of said foam when burned, a normally solid carboxylic acid.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein said normally solid carboxylic acid is present in an amount of from about 1% to about 10% by weight of said foam.
Claim 4
Dependent Claim
28 words
The composition of claim 1 wherein said normally solid carboxylic acid is present in an amount of from about 1% to about 3% by weight of said foam.
Claim 5
Dependent Claim
38 words
The composition of claim 1 wherein said normally solid carboxylic acid is selected from the group consisting of aromatic carboxylic acid, aliphatic carboxylic acid, aryl substituted aliphatic carboxylic acid, cycloaliphatic carboxylic acid, heterocyclic aliphatic acid and mixtures thereof.
Claim 6
Dependent Claim
34 words
The composition of claim 1 wherein said normally solid carboxylic acid is selected from the group consisting of trimesic acid, trimellitic acid, 2,3,4,5-tetrahydrofurane tetracarboxylic acid, benzoic acid, fumaric acid, terephthalic acid and mellitic acid.
Claim 7
Dependent Claim
14 words
The composition of claim 5 wherein said normally solid carboxylic acid is trimesic acid.
Claim 8
Dependent Claim
14 words
The composition of claim 5 wherein said normally solid carboxylic acid is trimellitic acid.
Claim 9
Dependent Claim
15 words
The composition of claim 5 wherein said normally solid carboxylic acid is 2,3,4,5-tetrahydrofurane tetracarboxylic acid.
Claim 10
Dependent Claim
14 words
The composition of claim 5 wherein said normally solid carboxylic acid is benzoic acid.
Claim 11
Dependent Claim
14 words
The composition of claim 5 wherein said normally solid carboxylic acid is fumaric acid.
Claim 12
Dependent Claim
14 words
The composition of claim 5 wherein said normally solid carboxylic acid is terephthalic acid.
Claim 13
Dependent Claim
14 words
The composition of claim 5 wherein said normally solid carboxylic acid is mellitic acid.
Claim 14
Dependent Claim
75 words
A poly(aryloxyphosphazene) smoke suppressed foam composition comprising (a) an aryloxyphosphazene homopolymer or copolymer of the formula ##STR6## wherein R 1 and R 2 are the same or different and are hydrogen, a C 1 -C 10 linear or branched alkyl radical or a C 1 -C 4 linear or branched alkoxy radical, said R 1 and R 2 substituted in any sterically permissible position on the phenoxy group; and (b) a normally solid carboxylic acid.
Claim 15
Dependent Claim
75 words
A poly(aryloxyphosphazene) smoke suppressed foam composition comprising (a) an aryloxyphosphazene homopolymer or copolymer of the formula ##STR6## wherein R 1 and R 2 are the same or different and are hydrogen, a C 1 -C 10 linear or branched alkyl radical or a C 1 -C 4 linear or branched alkoxy radical, said R 1 and R 2 substituted in any sterically permissible position on the phenoxy group; and (b) a normally solid carboxylic acid.
Claim 16
Dependent Claim
88 words
The poly(aryloxyphosphazene) foam composition of claim 13 wherein said aryloxyphosphazene homopolymer or copolymer has randomly repeating units represented by the formula ##STR7## wherein R 1 and R 2 are the same as before and W is a monovalent radical containing a group capable of crosslinking said group being attached to the phosphorous of the --P=N-- radical by an --O-- linkage and said normally solid carboxylic acid is aromatic carboxylic acid, aliphatic carboxylic acid, aryl substituted aliphatic carboxylic acid, cycloaliphatic carboxylic acid, heterocyclic aliphatic carboxylic acid, or mixtures thereof.
References Cited (Backward Citations)
US3856712A
Cited
US3856713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |