US4587324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer of phosphonylmethyl-2,4-and -2,6-diamino benzene and polyfunctional monomer
Assignee: National Aeronautics and Space Administration
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Filing: 1984-08-16
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Granted: 1986-05-06
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Expires: 2004-08-16
Abstract
Abstract Compounds having the general formula 1 <IMAGE> 1 wherein X and Y are functional groups, preferably amino groups, are polymerized with, for example, polyfunctional epoxides to provide heat and fire resistant polymers useful for making flame and fire resistant polymer structures such as for aircraft secondary structures. The groups R in 1 are preferably alkyl and lower halo (e.g., chloro) alkyl.
Inventors
- 👤 John A. Mikroyannidis
- 👤 Demetrius A. Kourtides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:09
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1067; C08G73/1042; C08G73/1057; C08G73/1064
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
46 words
A method of producing a phosphorus-containing polymer which comprises polymerizing a compound of the formula: ##STR23## with a polyfunctional monomer, R being an organic group attached to the oxygen atom through a carbon atom and X and Y are functional groups polymerizable with the polyfunctional monomer.
Claim 2
Independent Claim
46 words
A method of producing a phosphorus-containing polymer which comprises polymerizing a compound of the formula: ##STR23## with a polyfunctional monomer, R being an organic group attached to the oxygen atom through a carbon atom and X and Y are functional groups polymerizable with the polyfunctional monomer.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein X and Y are amino groups in the 2,4-position, 2,6-position or mixtures of the 2,4- and 2,6-positions.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein the polyfunctional monomer is a 1,2-epoxide having at least two 1,2-epoxy groups.
Claim 5
Dependent Claim
13 words
The method of claim 2 wherein R is a halogen-containing lower alkyl group.
Claim 6
Dependent Claim
13 words
The method of claim 3 wherein R is a halogen-containing lower alkyl group.
Claim 7
Dependent Claim
58 words
The method of claim 1 of producing a phosphorus-containing polymer which comprises polymerizing a compound of the formula: ##STR24## wherein R is an organic group attached to the oxygen atom through a carbon atom and is the same or different, and X and Y are both amino with a polyfunctional organic monomer wherein the monomer is a di-1,2-epoxide.
Claim 8
Dependent Claim
39 words
A polymer of a compound of the formula: ##STR25## with a polyfunctional monomer, R being an organic group attached to the oxygen atom through a carbon atom and X and Y are functional groups polymerizable with said polyfunctional monomer.
Claim 9
Dependent Claim
39 words
A polymer of a compound of the formula: ##STR25## with a polyfunctional monomer, R being an organic group attached to the oxygen atom through a carbon atom and X and Y are functional groups polymerizable with said polyfunctional monomer.
Claim 10
Dependent Claim
12 words
A polymer of claim 7 wherein R is a halo alkyl group.
Claim 11
Dependent Claim
30 words
A polymer having the repeating unit: ##STR26## wherein the R groups of the (RO) 2 are the same or different organic groups attached to the oxygen atoms by carbon atoms.
Claim 12
Dependent Claim
30 words
A polymer having the repeating unit: ##STR26## wherein the R groups of the (RO) 2 are the same or different organic groups attached to the oxygen atoms by carbon atoms.
Claim 13
Dependent Claim
10 words
A polymer of claim 9 wherein R is a haloalkyl.
Claim 14
Dependent Claim
40 words
The polymer of claim 7 wherein the compound has the formula: ##STR27## wherein R is an organic group attached to the oxygen atom through a carbon atom and is the same or different, and X and Y are each amino.
References Cited (Backward Citations)
US3376258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |