US3843675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-heterocyclic polyglycidyl compounds containing ester groups
Assignee: Novartis Corp
•
Filing: 1972-02-03
•
Granted: 1974-10-22
•
Expires: 1992-02-03
Abstract
Abstract N-heterocyclic polyglycidyl compounds are obtained if the polyesters obtained from 1 mol of a n-valent aliphatic or cycloaliphatic polyol and n mols of 3-(2''-carboxyethyl) or 3-(2''methyl-2''-carboxyethyl) compounds of a N,N-heterocyclic substance, for example hydantoin, are glycidylated in accordance with known processes. The new N-heterocyclic polyglycidyl compounds can be converted, with customary curing agents for epoxide resins, into mouldings and coatings having good mechanical and dielectric properties.
Inventors
- 👤 D Porret
- 👤 F Stockinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:19
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
6 words
A POLYGLYCIDYL COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A POLYGLYCIDYL COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 4
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 5
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 6
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 7
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 8
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 9
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 10
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
Claim 11
Dependent Claim
10 words
A compound as claimed in claim 1 of the formula
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |