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US2870193A
Expired / Lapsed
US
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Making alpha-chloroacrylic compounds
Assignee: Individual
•
Filing: 1957-03-15
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Granted: 1959-01-20
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Expires: 1977-03-15
Abstract
No abstract record available.
Inventors
- 👤 Maxwell A Pollack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:05
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/52; C07C57/54; C07C51/00; C07C51/347; C07C51/377
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN MAKING AN ALPHA-CHLOROACRYLIC COMPOUND, THE METHOD WHICH COMPRISES HEATING A MIXTURE CONSISTING ESSENTIALLY OF THE CORRESPONDING ALPHA-BETA-DICHLOROPROPIONIC COMPOUND AND CONCENTRATED SULFURIC ACID TO A TEMPERATURE WITHIN THE RANGE 60*-200* C., THIS HEATING CAUSING LIBERATION OF HYDROGEN CHLORIDE AND THE FORMATION OF THE ALPHA-CHLOROACRYLIC COMPOUND, AND DISTILLING FROM THE REACTION MIXTURE, WITHOUT SUBSTANIAL REFLUX, THE HYDROGEN CHLORIDE AND ALPHA-CHLOROACRYLIC COMPOUND AS FORMED AND AT A TEMPERATURE WITHIN THE SAID RANGE.
Claim 2
Dependent Claim
70 words
IN MAKING AN ALPHA-CHLOROACRYLIC COMPOUND, THE METHOD WHICH COMPRISES HEATING A MIXTURE CONSISTING ESSENTIALLY OF THE CORRESPONDING ALPHA-BETA-DICHLOROPROPIONIC COMPOUND AND CONCENTRATED SULFURIC ACID TO A TEMPERATURE WITHIN THE RANGE 60*-200* C., THIS HEATING CAUSING LIBERATION OF HYDROGEN CHLORIDE AND THE FORMATION OF THE ALPHA-CHLOROACRYLIC COMPOUND, AND DISTILLING FROM THE REACTION MIXTURE, WITHOUT SUBSTANIAL REFLUX, THE HYDROGEN CHLORIDE AND ALPHA-CHLOROACRYLIC COMPOUND AS FORMED AND AT A TEMPERATURE WITHIN THE SAID RANGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |