US3846442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glycidyl hydantoin compounds
Assignee: Novartis AG
•
Filing: 1971-11-15
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Granted: 1974-11-05
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Expires: 1991-11-15
Abstract
Abstract Binuclear N-heterocyclic N,N''-diglycidyl compounds are produced by the reaction at elevated temperature of 1 mole of a dialcohol, e.g. polypropylene glycol, with 2 moles of an epoxyisocyanate, the latter being obtained by the reaction of 1 mole of a polyisocyanate, e.g. isophoronediisocyanate, with 1 mole of an Nheterocyclic monoglycidyl compound, e.g. 3-glycidyl-5,5dimethylhydantoin. Example: The new compound. WHEREIN N HAS AN AVERAGE VALUE OF 7. The N,N''-diglycidyl compounds can be cured with epoxide resin curing agents to obtain moulded objects and coatings having good mechanical properties.
Inventors
- 👤 J Habermeier
- 👤 D Porret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/807; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3842; C08G18/3848; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26; Y; Y10; Y10S; Y10S525/00; Y10S525/908
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
9 words
The compound according to claim 1 having the formula:
Claim 4
Dependent Claim
9 words
The compound according to claim 1 having the formula:
Claim 5
Dependent Claim
9 words
The compound according to claim 1 having the formula:
Claim 6
Dependent Claim
9 words
The compound according to claim 1 having the formula:
Claim 7
Dependent Claim
9 words
The compound according to claim 1 having the formula:
Claim 8
Dependent Claim
5 words
A compound of the formula:
Claim 9
Dependent Claim
5 words
A compound of the formula:
References Cited (Backward Citations)
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Cited
US2703810A
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US3000931A
Cited
US2856411A
Cited
US2969386A
Cited
US2960534A
Cited
US2937119A
Cited
US3347658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |