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US3946034A
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Adducts of polyglycidyl compounds and dialkoxyphosphono-alkyl derivatives of cyclic ureides
Assignee: Novartis Corp
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Filing: 1973-12-07
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Granted: 1976-03-23
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Expires: 1993-12-07
Abstract
Abstract Adducts of polyglycidyl compounds and cyclic ureides containing dialkoxyphosphonoalkyl groups, such as 3-dialkoxyphosphonoalkyl-hydantoins. These adducts are used for the manufacture of flame-retardant epoxide resins.
Inventors
- 👤 Daniel Porret
- 👤 Jurgen Habermeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/304; C08G59/14; C08G59/1433; C08G59/1488
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
An adduct, containing epoxide groups, consisting essentially of the reaction product of a polyglycidyl compound selected from the group consisting of polyglycidyl compounds of cyclic ureides, polyglycidyl compounds of bisphenol A, and a cycloaliphatic polyglycidyl compound and a compound of the formula ##EQU4## wherein Z is methylene, methylene substituted by alkyl groups of 1-6 carbon atoms, cyclopentylidene or cyclohexylidene; A is alkylene of 1-12 carbon atoms, or --CH 2 CH 2 O CH 2 CH 2 --; and R 1 and R 2 each is alkyl or alkenyl with up to 4 carbon atoms, or R 1 and R 2 together are alkylene of 2-5 carbon atoms.
Claim 2
Dependent Claim
107 words
An adduct, containing epoxide groups, consisting essentially of the reaction product of a polyglycidyl compound selected from the group consisting of polyglycidyl compounds of cyclic ureides, polyglycidyl compounds of bisphenol A, and a cycloaliphatic polyglycidyl compound and a compound of the formula ##EQU4## wherein Z is methylene, methylene substituted by alkyl groups of 1-6 carbon atoms, cyclopentylidene or cyclohexylidene; A is alkylene of 1-12 carbon atoms, or --CH 2 CH 2 O CH 2 CH 2 --; and R 1 and R 2 each is alkyl or alkenyl with up to 4 carbon atoms, or R 1 and R 2 together are alkylene of 2-5 carbon atoms.
Claim 3
Dependent Claim
10 words
An adduct according to claim 1 wherein Z is propylidene-(2,2).
Claim 4
Dependent Claim
10 words
An adduct according to claim 1 wherein Z is cyclohexylidene.
Claim 5
Dependent Claim
23 words
An adduct according to claim 1 wherein R 1 and R 2 each is alkyl or alkenyl with up to 4 carbon atoms.
Claim 6
Dependent Claim
16 words
An adduct according to claim 1 wherein R 1 and R 2 is methyl, or ethyl.
References Cited (Backward Citations)
US3449353A
Cited
US3674804A
Cited
US3629263A
Cited
US3657282A
Cited
US3641193A
Cited
US3787405A
Cited
US3741978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |