US3920683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diglycidyloxyalkyl compounds
Assignee: Novartis Corp
•
Filing: 1974-01-07
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Granted: 1975-11-18
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Expires: 1994-01-07
Abstract
Abstract New diglycidyl ether compounds are manufactured by glycidylating the dihydroxy compounds obtained by addition of alkylene oxide to benzimidazolone, tetrahydrobenzimidazolone or hexahydrobenzimidazolone. The new diglycidyl ethers can be cured with epoxide resin curing agents to give products with good mechanical and dielectric properites.
Inventors
- 👤 Daniel Porret
- 👤 Friedrich Stockinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:19
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
6 words
A DIGLYCIDYL ETHER OF THE FORMULA
Claim 2
Dependent Claim
6 words
A DIGLYCIDYL ETHER OF THE FORMULA
Claim 3
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxyethyl)-benzimidazolone.
Claim 4
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxy-n-propyl)-benzimidazolone.
Claim 5
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxy-2''-phenylethyl)-benzimidazolone
Claim 6
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxy-n-propyl)-5-methyl-benzimidazolone.
Claim 7
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxyethyl)-tetrahydrobenzimidazolone.
Claim 8
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxy-n-propyl)-tetrahydrobenzimidazolone.
Claim 9
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxy-2''-phenylethyl)-tetrahydrobenzimidazolone.
Claim 10
Dependent Claim
10 words
A compound as claimed in claim 1, which is 1,3-bis-(2''-glycidyloxyethyl)-hexahydrobenzimidazolone.
References Cited (Backward Citations)
US3843674A
Cited
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 |