US4108805A
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Structurally regulated polyphosphazene copolymers
Assignee: Armstrong World Industries Inc
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Filing: 1977-09-06
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Granted: 1978-08-22
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Expires: 1997-09-06
Abstract
Abstract This invention relates to polyphosphazenes which have an at least partially regulated structure corresponding to the formula: --N.sub.3 P.sub.3 (Cl).sub.5 (OR.sup.1)--.sub.n (I) where n is greater than 2, and where R 1 is phenyl or substituted phenyl. This invention further relates to copolymers, derived from the above polymers (I), which correspond to the formula: --N.sub.3 P.sub.3 (OR.sup.1)(OR.sup.2).sub.5 --.sub.n (II) where R 1 is phenyl or substituted phenyl and where R 2 is different than R 1 and is an alkyl or substituted alkyl radical or a phenyl or substituted phenyl radical. These polymers are prepared by polymerizing cyclic triphosphazenes of the formula: ##STR1## to form the polymers (I) which, in turn, are reacted to replace the chlorine with organic radicals to form polymers (II). The polymers (II) can be formed by chemical blowing agents to form fire retardant articles. These polymers have fire retardant properties and evolve little or no smoke when exposed to an open flame.
Inventors
- 👤 Ronald L. Dieck
- 👤 Edwin J. Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:59
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08G; C08G79/00; C08G79/02; C08G79/025; C08J2385/00; C08J2385/02
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
75 words
A structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (Cl.sub.5)(OR.sup.1)--.sub.n where n is greater than 2 to about 600 and where R 1 represents ##STR9## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 2
Dependent Claim
75 words
A structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (Cl.sub.5)(OR.sup.1)--.sub.n where n is greater than 2 to about 600 and where R 1 represents ##STR9## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 3
Dependent Claim
11 words
A polyphosphazene, as in claim 1, where R 1 is phenyl.
Claim 4
Dependent Claim
20 words
A polyphosphazene, as in claim 1, where R 3 is lower alkyl or lower alkoxy, and where x is 1.
Claim 5
Dependent Claim
19 words
A polyphosphazene, as in claim 3, where R 3 is located in the para position on the phenoxy ring.
Claim 6
Independent Claim
91 words
A method of forming a structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (Cl).sub.5 (OR.sup.1)--.sub.n where n is greater than about 2 to about 600 which method comprises polymerizing a triphosphazene corresponding to the formula ##STR10## where R 1 represents ##STR11## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 7
Independent Claim
91 words
A method of forming a structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (Cl).sub.5 (OR.sup.1)--.sub.n where n is greater than about 2 to about 600 which method comprises polymerizing a triphosphazene corresponding to the formula ##STR10## where R 1 represents ##STR11## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 8
Dependent Claim
16 words
A method, as in claim 5, where the triphosphazene is thermally polymerized in an inert atmosphere.
Claim 9
Dependent Claim
23 words
A method, as in claim 6, where x is 0 or 1 and OR 1 is phenoxy, lower alkyl phenoxy, or lower alkoxyphenoxy.
Claim 10
Dependent Claim
122 words
A structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (OR.sup.1)(OR.sup.2).sub.5 --.sub.n where n is greater than about 2 to about 600 and where R 1 represents ##STR12## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy, and where R 2 and R 1 are different and represent lower alkyl, lower alkaryl, substituted lower alkyl or ##STR13## where z is 0 to 3 and where R 4 represents lower alkyl, lower alkoxy, nitro, cyano, halo, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo or lower alkoxy and x is 0 to 3.
Claim 11
Dependent Claim
122 words
A structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (OR.sup.1)(OR.sup.2).sub.5 --.sub.n where n is greater than about 2 to about 600 and where R 1 represents ##STR12## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy, and where R 2 and R 1 are different and represent lower alkyl, lower alkaryl, substituted lower alkyl or ##STR13## where z is 0 to 3 and where R 4 represents lower alkyl, lower alkoxy, nitro, cyano, halo, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo or lower alkoxy and x is 0 to 3.
Claim 12
Dependent Claim
19 words
A copolymer, as in claim 8, where both OR 1 and OR 2 are phenoxy or substituted phenoxy groups.
Claim 13
Dependent Claim
18 words
A copolymer, as in claim 9, where the substituted phenoxy is an alkyl or alkoxy substituted phenoxy group.
Claim 14
Dependent Claim
71 words
A copolymer, as in claim 8, where a portion of the OR 2 groups are replaced by W which represents a group capable of a crosslinking chemical reaction and is --OCH═CH 2 ; --OR 5 CH═CH 2 ; OC(R 6 )═CH 2 or --OR 5 CF═CF 2 wherein R 5 and R 6 represent an aliphatic or aromatic radical, the ratio of W:R 1 +R 2 being less than about 1:5.
Claim 15
Dependent Claim
14 words
A copolymer, as in claim 11, where W is an ethylenically unsaturated monovalent radical.
Claim 16
Independent Claim
165 words
A method of forming a structurally regulated polyphosphazene copolymer which comprises reacting a polymer represented by the general formula --N.sub.3 P.sub.3 (Cl.sub.5)(OR.sup.1)--.sub.n with at least about a stoichiometric equivalent of one alkali or alkaline earth metal compound of the formula M(OR.sup.2).sub.v where M is lithium, sodium, potassium, magnesium or calcium, v is the valence of the metal M, where n is greater than about 2 to about 600, where R 1 represents ##STR14## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy, and where R 2 and R 1 are different and represent lower alkyl, lower alkaryl, substituted lower alkyl or ##STR15## where z is 0 to 3 and were R 4 represents lower alkyl, lower alkoxy, nitro, cyano, halo, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 17
Independent Claim
165 words
A method of forming a structurally regulated polyphosphazene copolymer which comprises reacting a polymer represented by the general formula --N.sub.3 P.sub.3 (Cl.sub.5)(OR.sup.1)--.sub.n with at least about a stoichiometric equivalent of one alkali or alkaline earth metal compound of the formula M(OR.sup.2).sub.v where M is lithium, sodium, potassium, magnesium or calcium, v is the valence of the metal M, where n is greater than about 2 to about 600, where R 1 represents ##STR14## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy, and where R 2 and R 1 are different and represent lower alkyl, lower alkaryl, substituted lower alkyl or ##STR15## where z is 0 to 3 and were R 4 represents lower alkyl, lower alkoxy, nitro, cyano, halo, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 18
Dependent Claim
19 words
A method, as in claim 13, where both OR 1 and OR 2 are phenoxy or substituted phenoxy groups.
Claim 19
Dependent Claim
18 words
A method, as in claim 14, where the substituted phenoxy is an alkyl or alkoxy substituted phenoxy group.
Claim 20
Independent Claim
121 words
A method of forming a structurally regulated polyphosphazene homopolymer which comprises reacting a polymer represented by the general formula --N.sub.3 P.sub.3 (Cl).sub.5)(OR.sup.1)--.sub.n with at least about a stoichiometric equivalent of an alkali or alkaline earth metal compound of the formula M(OR.sup.1).sub.v where M is lithium, sodium, potassium, magnesium, or calcium, v is the valence of the metal M, where n is greater than about 2 to about 600, and where R 1 represents ##STR16## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 21
Independent Claim
121 words
A method of forming a structurally regulated polyphosphazene homopolymer which comprises reacting a polymer represented by the general formula --N.sub.3 P.sub.3 (Cl).sub.5)(OR.sup.1)--.sub.n with at least about a stoichiometric equivalent of an alkali or alkaline earth metal compound of the formula M(OR.sup.1).sub.v where M is lithium, sodium, potassium, magnesium, or calcium, v is the valence of the metal M, where n is greater than about 2 to about 600, and where R 1 represents ##STR16## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 22
Dependent Claim
71 words
A method, as in claim 16, where a portion of M(OR 1 ) v is replaced by M(OW) v where W is a group capable of a crosslinking chemical reaction and is --OCH═CH 2 ; --OR 5 CH═CH 2 ; OC(R 6 )═CH 2 or --OR 5 CF═CF 2 wherein R 5 and R 6 represent an aliphatic or aromatic radical, the ratio of W:R 1 being less than about 1:5.
Claim 23
Dependent Claim
127 words
A foamed cellular article comprising a structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (OR.sup.1)(OR.sup.2).sub.5 --.sub.n where n is greater than about 2 to about 600 and where R 1 represents ##STR17## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy, and where R 2 and R 1 are different and represent lower alkyl, lower alkaryl, substituted lower alkyl or ##STR18## where z is 0 to 3 and where R 4 represents lower alkyl, lower alkoxy, nitro, cyano, halo, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 24
Dependent Claim
127 words
A foamed cellular article comprising a structurally regulated polyphosphazene copolymer represented by the general formula --N.sub.3 P.sub.3 (OR.sup.1)(OR.sup.2).sub.5 --.sub.n where n is greater than about 2 to about 600 and where R 1 represents ##STR17## wherein R 3 is located in the meta or para positions on the phenoxy ring, and represents lower alkyl, lower alkoxy, halo, cyano, nitro, substituted lower alkyl or substituted lower alkoxy, and where R 2 and R 1 are different and represent lower alkyl, lower alkaryl, substituted lower alkyl or ##STR18## where z is 0 to 3 and where R 4 represents lower alkyl, lower alkoxy, nitro, cyano, halo, substituted lower alkyl or substituted lower alkoxy wherein the substituents are nitro, cyano, halo, or lower alkoxy and x is 0 to 3.
Claim 25
Dependent Claim
20 words
A cellular article, as in claim 18, where both OR 1 and OR 2 are phenoxy or substituted phenoxy groups.
Claim 26
Dependent Claim
18 words
A cellular article, as in claim 18, where the substituted phenoxy is an alkyl or alkoxy substituted group.
Claim 27
Dependent Claim
65 words
A cellular article, as in claim 18, where the polyphosphazene foamed contains W which represents groups capable of a crosslinking chemical reaction and is --OCH═CH 2 ; --OR 5 CH═CH 2 ; OC(R 6 )═CH 2 or --OR 5 CF═CF 2 wherein R 5 and R 6 represent an aliphatic or aromatic radical, the ratio of W:R 1 +R 2 being less than about 1:5.
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) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |