US3634523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dihalohydrins
Assignee: Honeywell International Inc
•
Filing: 1969-08-18
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Granted: 1972-01-11
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Expires: 1989-08-18
Abstract
Abstract DIHALOHYDRINS OF THE FORMULA Y-CH2-COHR-M-COHR''-CH2Y WHEREIN R AND R'' ARE LOWER ALKYL GROUPS, Y IS HALOGEN AND M IS ((X)N-1,3-PHENYLENE) AND ((X)N-1,4-PHENYLENE) WHEREIN X IS HYDROGEN, HALOGEN, NITRO AND ALKYL GROUPS AND N IS 1 OR 2. THESE COMPOUNDS ARE PREPARED BY REACTION OF THE CORRESPONDING DIALKYLENE COMPOUNDS WITH A HYPOHALOUS ACID. THE COMMPOUNDS ARE USEFUL TO FORM THE CORRESPONDING DIEPOXIDES WHICH CAN BE CURED TO INFUSIBLE RESINS.
Inventors
- 👤 Richard B Lund
- 👤 John Vitrone
- 👤 John F Sereno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:11
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/245; C07; C07C; C07C29/00; C07C29/64; C07C29/66
Claims Analysis
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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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |