US4200721A
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Heat resistant polymers of oxidized styrylphosphine
Assignee: National Aeronautics and Space Administration
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Filing: 1978-05-19
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Granted: 1980-04-29
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Expires: 1998-05-19
Abstract
Abstract Homopolymers, copolymers and terpolymers of a styrene based monomer are prepared by: (1) polymerizing at least one oxidized styrylphosphine monomer selected from the group of: (C6H5)2P(O)N=P(C6H5)2C6H4CH=CH2, (C6H5O)2P(O)N=P(C6H5)2C6H4CH=CH2, (C6H5)2C3N3N=P(C6H5)2C6H4CH=CH2 and (C6H5)C3N3[N=P(C6H5)2C6H4CH=CH2]2; or (2) polymerizing p-diphenylphosphinestyrene and then oxidizing said polymerized p-diphenylphosphinestyrene monomer with an organoazide selected from the group of (C6H5)2P(O)N3,(C6H5O)2P(O)N3,(C6H5)2C3N3(N3) and C6H5C3N3(N3)2. Copolymers can also be prepared by copolymerizing styrene with at least one oxidized styrylphosphine monomer selected from the group of: (C6H5)2P(O)N=P(C6H5)2C6H4CH=CH2, (C6H5O)2P(O)N=P(C6H5)2C6H4CH=CH2, (C6H5)2C3N3N=P(C6H5)2C6H4CH=CH2 and (C6H5)C3N3[N=P(C6H5)2C6H4CH=CH2]2.
Inventors
- 👤 with respect to an invention of Fletcher James C. Administrator of the National Aeronautics and Space Administration
- 👤 Kazimiera J. L. Paciorek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:56
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/02; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/14; C07D251/16; C07D251/18; C07D251/20; C07D251/22; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/535; C07F9/5355; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
124 words
A batch thermal polymerization process for preparing homopolymers, copolymers and terpolymers of oxidized styrylphosphine monomers, which comprises: polymerizing in batch at a temperature of 130° to 230° C. at least one oxidized styrylphosphine monomer selected from the group consisting of: (C 6 H 5 ) 2 P(O)N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 , (C 6 H 5 O) 2 P(O)N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 , (C 6 H 5 ) 2 C 3 N 3 N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 and (C 6 H 5 )C 3 N 3 [N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 ] 2 .
Claim 2
Dependent Claim
124 words
A batch thermal polymerization process for preparing homopolymers, copolymers and terpolymers of oxidized styrylphosphine monomers, which comprises: polymerizing in batch at a temperature of 130° to 230° C. at least one oxidized styrylphosphine monomer selected from the group consisting of: (C 6 H 5 ) 2 P(O)N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 , (C 6 H 5 O) 2 P(O)N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 , (C 6 H 5 ) 2 C 3 N 3 N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 and (C 6 H 5 )C 3 N 3 [N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 ] 2 .
Claim 3
Dependent Claim
97 words
The process of claim 1, which further comprises: homopolymerizing (C 6 H 5 O) 2 P(O)N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 , (C 6 H 5 ) 2 C 3 N 3 N═P (C 6 H 5 ) 2 C 6 H 4 CH═CH 2 or (C 6 H 5 )C 3 N 3 [N═P(C 6 H 5 ) 2 C 6 H 5 CH═CH 2 ] 2 at a temperature of 130° C. to 230° C. and obtaining a homopolymer product having a molecular weight ranging from 10,000 to 100,000.
Claim 4
Dependent Claim
9 words
A homopolymer prepared by the process of claim 1.
Claim 5
Dependent Claim
10 words
The homopolymer of claim 3, which has the formula: ##STR21##
Claim 6
Dependent Claim
15 words
A copolymer prepared by polymerizing any two of said oxidized styrylphosphine monomers of claim 1.
Claim 7
Dependent Claim
59 words
The copolymer of claim 5, prepared by copolymerizing (C 6 H 5 )C 3 N 3 [N═P(C 6 H 5 ) 2 C 6 H 5 CH═CH 2 ] 2 and (C 6 H 5 ) 2 C 3 N 3 N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 in a mole ratio of 1:20.
Claim 8
Dependent Claim
30 words
A copolymer prepared by copolymerizing diphenyl-p-strylphosphine and (C 6 H 5 ) 2 C 3 N 3 N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 .
Claim 9
Dependent Claim
30 words
A copolymer prepared by copolymerizing diphenyl-p-strylphosphine and (C 6 H 5 ) 2 C 3 N 3 N═P(C 6 H 5 ) 2 C 6 H 4 CH═CH 2 .
Claim 10
Dependent Claim
13 words
The copolymer of claim 7, wherein said reactants are copolymerized in equimolar quantities.
Claim 11
Dependent Claim
15 words
A terpolymer prepared by polymerizing any three of said oxidized styrylphosphine monomers of claim 1.
Claim 12
Dependent Claim
25 words
The terpolymer of claim 9, which has the formula: ##STR22## wherein x is 50-90 mole percent, y is 36-15 mole percent and z=10-2 mole percent.
Claim 13
Dependent Claim
20 words
The process of claim 1, which further comprises: copolymerizing styrene with at least one oxidized styrylphosphine monomer of claim 1.
Claim 14
Dependent Claim
30 words
The process of claim 11 wherein from 20 to 95 mole % styrene is copolymerized with 80 to 5 mole % of at least one of said oxidized styrylphosphine monomers.
Claim 15
Dependent Claim
16 words
A copolymer prepared by polymerizing styrene with one of said oxidized styrylphosphine monomers of claim 1.
Claim 16
Dependent Claim
23 words
The copolymer of claim 13, which has the formula: ##STR23## wherein x is a 50-10 mole percent and y is 50-90 mole percent.
Claim 17
Dependent Claim
22 words
The copolymer of claim 13, which has the formula: ##STR24## wherein x is 50-10 mole percent and y is 50-90 mole percent.
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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |