US3920685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkoxyphosphonalkyl derivatives of cyclicureides containing glycidyl groups
Assignee: Novartis Corp
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Filing: 1973-12-07
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Granted: 1975-11-18
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Expires: 1993-12-07
Abstract
Abstract 1-Glycidyl-3-dialkoxyphosphonoalkyl-hydantoins and 1-glycidyl-3dialkoxyphosphonoalkyl-dihydrouracils. These compounds are used as flame-retardant additives in plastics, especially as additives to epoxide resins.
Inventors
- 👤 Daniel Porret
- 👤 Jurgen Habermeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:30
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/80; C07D233/82; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/645; C07F9/6503; C07F9/6506; C07F9/65068; C07F9/6558; C07F9/65586; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5373
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
11 words
A CYCLIC UREIDE CONTAINING PHOSPHORUS AND GLYCIDYL GROUP OF THE FORMULA
Claim 2
Dependent Claim
11 words
A CYCLIC UREIDE CONTAINING PHOSPHORUS AND GLYCIDYL GROUP OF THE FORMULA
Claim 3
Dependent Claim
11 words
A compound according to claim 1 wherein Z is propylidene-(2, 2).
Claim 4
Dependent Claim
21 words
A compound according to claim 1 wherein R1 and R2 each is alkyl or alkenyl of one to four carbon atoms.
Claim 5
Dependent Claim
15 words
A compound according to claim 3 wherein R1 and R2 is each ethyl or methyl.
Claim 6
Dependent Claim
16 words
A compound according to claim 1 wherein A is alkylene of two to six carbon atoms.
Claim 7
Dependent Claim
10 words
A compound according to claim 1 wherein A is ethyl.
Claim 8
Dependent Claim
10 words
A compound according to claim 1 wherein A is -CH2CH2OCH2CH2-.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |