US3994858A
Expired / Lapsed
US
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Dialkoxyphosphonoalkyl derivatives of cyclicureides containing glycidyl groups
Assignee: Novartis Corp
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Filing: 1975-09-17
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Granted: 1976-11-30
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Expires: 1995-09-17
Abstract
Abstract 1-Glycidyl-3-dialkoxyphosphonoalkyl-hydantoins and 1-glycidyl-3-dialkoxyphosphonoalkyl-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
2026-11-09 09:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5373; 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; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/18; C08G59/40; C08G59/4007; C08G59/4071
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A flame-retardant composition comprising an epoxide resin and a compound of the formula ##EQU1## wherein Z is methylene, methylene substituted with alkyl groups of 1 to 6 carbon atoms, cyclohexylidene, or cyclopentylidene; A is alkylene of 1 to 12 carbon atoms, or -CH 2 CH 2 OCH 2 CH 2 -; R 1 and R 2 each is alkyl or alkenyl of 1 to 4 carbon atoms, or R 1 and R 2 together is alkylene of 2 to 5 carbon atoms, wherein said compound is present in the composition in such an amount that the phosphorus content is at least 0.8 to 4%.
Claim 2
Dependent Claim
104 words
A flame-retardant composition comprising an epoxide resin and a compound of the formula ##EQU1## wherein Z is methylene, methylene substituted with alkyl groups of 1 to 6 carbon atoms, cyclohexylidene, or cyclopentylidene; A is alkylene of 1 to 12 carbon atoms, or -CH 2 CH 2 OCH 2 CH 2 -; R 1 and R 2 each is alkyl or alkenyl of 1 to 4 carbon atoms, or R 1 and R 2 together is alkylene of 2 to 5 carbon atoms, wherein said compound is present in the composition in such an amount that the phosphorus content is at least 0.8 to 4%.
Claim 3
Dependent Claim
11 words
The flame-retardant composition according to claim 1 wherein Z is propylidene-(2,2).
Claim 4
Dependent Claim
24 words
The flame-retardant composition according to claim 1 wherein R 1 and R 2 each is alkyl or alkenyl of 1 to 4 carbon atoms.
Claim 5
Dependent Claim
18 words
The flame-retardant composition according to claim 1 wherein R 1 and R 2 is each ethyl or methyl.
Claim 6
Dependent Claim
17 words
The flame-retardant composition according to claim 1 wherein A is alkylene of 2 to 6 carbon atoms.
Claim 7
Dependent Claim
11 words
The flame-retardant composition according to claim 1 wherein A is ethylene.
Claim 8
Dependent Claim
19 words
The flame-retardant composition according to claim 1 wherein A is -CH 2 CH 2 OCH 2 CH 2 -.
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) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |