Patent US822622A successfully refreshed from Google Patents.
Patent US2652432A successfully refreshed from Google Patents.
US2652432A
Expired / Lapsed
US
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Method of making chlokomethyl
Assignee: —
•
Filing: —
•
Granted: 1953-09-15
•
Expires: 1970-09-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:41
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/12; C07C43/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF MAKING CHLOROMETHYL METHYL ETHER WHICH COMPRISES, INTRODUCING HYDROGEN CHLORIDE INTO A MIXTURE CONTAINING, AS THE ESSENTIAL REACTANTS, APPROXIMATELY MOLECULAR EQUIVALENT PROPORTIONS OF FORMALDEHYDE AND METHYL ALCOHOL IN ADMIXTURE WITH CALCIUM CHLORIDE IN AMOUNT CORRESPONDING TO FROM 0.5 TO 1 PART BY WEIGHT OF THE CALCIUM CHLORIDE PER PART OF WATER TO BE PRESENT UPON COMPLETION OF THE REACTION, AT A TEMPERATURE BETWEEN 0* AND 60* C. UNTIL THE MIXTURE IS SUBSTANTIALLY SATURATED WITH RESPECT TO THE HYDROGEN CHLORIDE AND THEREAFTER SEPARATING CHLOROMETHYL METHYL ETHER FROM THE REACTION MIXTURE.
Claim 2
Independent Claim
91 words
A METHOD OF MAKING CHLOROMETHYL METHYL ETHER WHICH COMPRISES, INTRODUCING HYDROGEN CHLORIDE INTO A MIXTURE CONTAINING, AS THE ESSENTIAL REACTANTS, APPROXIMATELY MOLECULAR EQUIVALENT PROPORTIONS OF FORMALDEHYDE AND METHYL ALCOHOL IN ADMIXTURE WITH CALCIUM CHLORIDE IN AMOUNT CORRESPONDING TO FROM 0.5 TO 1 PART BY WEIGHT OF THE CALCIUM CHLORIDE PER PART OF WATER TO BE PRESENT UPON COMPLETION OF THE REACTION, AT A TEMPERATURE BETWEEN 0* AND 60* C. UNTIL THE MIXTURE IS SUBSTANTIALLY SATURATED WITH RESPECT TO THE HYDROGEN CHLORIDE AND THEREAFTER SEPARATING CHLOROMETHYL METHYL ETHER FROM THE REACTION MIXTURE.
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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |