Patent US4568498A successfully refreshed from Google Patents.
US4568498A
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(Vinyloxy)chlorocyclotriphosphazenes
Assignee: United States Department of the Navy
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Filing: 1984-04-30
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Granted: 1986-02-04
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Expires: 2004-04-30
Abstract
Abstract The reaction of the lithium enolate of acetaldehyde, LiOCHCH 2 , with achlorocyclotriphosphazene, N 3 P 3 Cl 6 , lead to the series of (vinyloxy)chlorocyclotriphosphazenes, N 3 P 3 Cl 6-n (OCH═CH 2 ) n (n=1-6). The nongeminal pathway is favored. These materials undergo homopolymerization reaction and can be copolymerized with a wide variety of organic monomers. The resulting polymeric systems incorporate certain properties such as fire retardancy and are chemically bonded to the polymer rather than an additive.
Inventors
- 👤 Christopher W. Allen
- 👤 Kolikkara Ramachandran
- 👤 Randall Bright
- 👤 Jonathan C. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:06
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/02; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; C07F9/65815
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
A (vinyloxy)chlorocyclotriphosphazene having the formula N 3 P 3 Cl 6-n (OCH═CH 2 ) n wherein n represents an integer from 1 to 6.
Claim 2
Dependent Claim
24 words
A (vinyloxy)chlorocyclotriphosphazene having the formula N 3 P 3 Cl 6-n (OCH═CH 2 ) n wherein n represents an integer from 1 to 6.
Claim 3
Dependent Claim
14 words
A dimethylamino derivative N 3 P 3 (OCH═CH 2 )(NMe 2 ) 5 .
Claim 4
Dependent Claim
14 words
A dimethylamino derivative N 3 P 3 (OCH═CH 2 )(NMe 2 ) 5 .
Claim 5
Dependent Claim
14 words
A dimethylamino derivative N 3 P 3 (OCH═CH 2 ) 5 NMe 2 .
Claim 6
Dependent Claim
14 words
A dimethylamino derivative N 3 P 3 (OCH═CH 2 ) 5 NMe 2 .
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |