US3823175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated neopentyl chloroformates
Assignee: Dow Chemical Co
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Filing: 1971-03-19
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Granted: 1974-07-09
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Expires: 1991-03-19
Abstract
Abstract HALOGENATED MONOCHLOROFORMATES OF THE FORMUAL (X-CH2-)3C-CH2-O-CO-CL AND HALOGENATED BISCHLOROFORMATES OF THE FORMULA (X-CH2-)2C(-CH2-O-CO-CL)2 WHEREIN EACH X IS INDEPENDENTLY BR OR CL HAVE BEEN DISCOVERED TO BE FIRE RETARDANTS FOR THERMOPLASTIC POLYMERS, ESPECIALLY UNSATURATED POLYESTER. THESE COMPOUNDS ARE ALSO USEFUL INTERMEDIATES TO PREPARE VERY DESIRABLE FIRE RETARDANTS FOR FIBERS.
Inventors
- 👤 J Exner
- 👤 E Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/109
Claims Analysis
Total Claims: 0
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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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |