Patent US3188357A successfully refreshed from Google Patents.
US3188357A
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US
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Dehydrochlorination of 1, 2, 3-trichlorobutane
Assignee: Honeywell International Inc
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Filing: 1961-06-08
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Granted: 1965-06-08
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Expires: 1981-06-08
Abstract
No abstract record available.
Inventors
- 👤 John H Blumbergs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:13
CPC Classifications
C; C07; C07C; C07C21/00; C07C21/02; C07C21/19; C07C21/20; C07C21/21; C07C17/00; C07C17/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN THE PROCESS FOR PRODUCTION OF CHLOROPRENE FROM 1,2,3-TRICHLOROBUTANE INVOLVING DEHYDROCHLORINATING 1,2,3TRICH OROBUTANE TO PRODUCE A MIXTURE OF CHLORPRENE CONVERTIBLE DICHLOROBUTENES, AND SUBJECTING SAID MIXTURE OF DICHLOROBUTENES TO NON-CATALYTIC THERMAL DEHYDROCHLORINATION AT TEMPERATURE WITHIN THE RANGE OF 450*C.650*C. TO PRODUCE CHLOROPRENE; THE STEP OF SUBJECTING 1,2,3-TRICHLOROBUTANE AT A TEMPERATURE WITHIN THE RANGE OF 100*C. TO 250*C. AND UNDER OXYGEN FREE CONDITIONS TO THE ACTION OF SODIUM HYDROXIDE AS DEHYDRROCHLORINATING AGENT TO PRODUCE A MIXTURE OF CHLOROPRENE CONVERTIBLE DICHLOROBUTENES IN WHICH 2,3-DICH.OROBUTENE-1 IS THE MAJOR COMPONENT.
Claim 2
Dependent Claim
85 words
IN THE PROCESS FOR PRODUCTION OF CHLOROPRENE FROM 1,2,3-TRICHLOROBUTANE INVOLVING DEHYDROCHLORINATING 1,2,3TRICH OROBUTANE TO PRODUCE A MIXTURE OF CHLORPRENE CONVERTIBLE DICHLOROBUTENES, AND SUBJECTING SAID MIXTURE OF DICHLOROBUTENES TO NON-CATALYTIC THERMAL DEHYDROCHLORINATION AT TEMPERATURE WITHIN THE RANGE OF 450*C.650*C. TO PRODUCE CHLOROPRENE; THE STEP OF SUBJECTING 1,2,3-TRICHLOROBUTANE AT A TEMPERATURE WITHIN THE RANGE OF 100*C. TO 250*C. AND UNDER OXYGEN FREE CONDITIONS TO THE ACTION OF SODIUM HYDROXIDE AS DEHYDRROCHLORINATING AGENT TO PRODUCE A MIXTURE OF CHLOROPRENE CONVERTIBLE DICHLOROBUTENES IN WHICH 2,3-DICH.OROBUTENE-1 IS THE MAJOR COMPONENT.
References Cited (Backward Citations)
US2524383A
Cited
US2879311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |