US2695873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for chlorinating methyl aromatic compounds
Assignee: Occidental Chemical Corp
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Filing: 1952-04-04
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Granted: 1954-11-30
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Expires: 1972-04-04
Abstract
No abstract record available.
Inventors
- 👤 Loverde Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:35
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/14; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE PROCESS FOR CHLORINATING METHYL GROUPS IN METHYL AROMATIC COMPOUNDS WHICH COMPRISES: ADDING AT LEAST 0.05 PER CENT BY WEIGHT OF AN ACID AMIDE TO THE MATERIAL TO BE CHLORINATED; EXPOSING THE REACTION MIXTURE SO PRODUCED TO ACTINIC LIGHT; AND INTRODUCING GASEOUS CHLORINE INTO THE REACTION MIXTURE MAINTAINED AT AN ELEVATED TEMPERATURE AND IN THE LIQUID PHASE UNTIL THE DESIRED STAGE OF CHLORINATION IS OBTAINED.
Claim 2
Dependent Claim
65 words
THE PROCESS FOR CHLORINATING METHYL GROUPS IN METHYL AROMATIC COMPOUNDS WHICH COMPRISES: ADDING AT LEAST 0.05 PER CENT BY WEIGHT OF AN ACID AMIDE TO THE MATERIAL TO BE CHLORINATED; EXPOSING THE REACTION MIXTURE SO PRODUCED TO ACTINIC LIGHT; AND INTRODUCING GASEOUS CHLORINE INTO THE REACTION MIXTURE MAINTAINED AT AN ELEVATED TEMPERATURE AND IN THE LIQUID PHASE UNTIL THE DESIRED STAGE OF CHLORINATION IS OBTAINED.
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) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |