US2649475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of methyl acrylate
Assignee: Distillers Co Yeast Ltd
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Filing: 1951-06-12
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Granted: 1953-08-18
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Expires: 1971-06-12
Abstract
No abstract record available.
Inventors
- 👤 Bellringer Frederick James
- 👤 Bewley Thomas
- 👤 Snell Ronald Charles
- 👤 Turck Karl Heinrich Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:00
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
PROCESS FOR THE MANUFACTURE OF METHYL ACRYLATE WHICH COMPRISES FEEDING BETA-METHOXYPROPIONIC ACID INTO A HEATED REACTION MEDIUM COMPRISING AN ACIDIC CATALYST AND A SUBSTANTIAL PROPORTION OF METHYL-BETA-METHOXYPROPIONATE AND METHANOL, WITHDRAWING BY DISTILLATION FROM THE HEATED MEDIUM METHYL ACRYLATE SUBSTANTIALLY AT METHANOL, WATER AND METHYL-METHOXYPROPIANATE METHANOL, WATER AND METHYL-METHOXYPROPIONATE BY USING METHYL ACRYLATE AND METHYL METHOXYPROPIONATE AS ENTRAINERS FOR THE WATER AND SEPARATING THE METHYL ACRYLATE FROM THE DISTILLATE.
Claim 2
Dependent Claim
68 words
PROCESS FOR THE MANUFACTURE OF METHYL ACRYLATE WHICH COMPRISES FEEDING BETA-METHOXYPROPIONIC ACID INTO A HEATED REACTION MEDIUM COMPRISING AN ACIDIC CATALYST AND A SUBSTANTIAL PROPORTION OF METHYL-BETA-METHOXYPROPIONATE AND METHANOL, WITHDRAWING BY DISTILLATION FROM THE HEATED MEDIUM METHYL ACRYLATE SUBSTANTIALLY AT METHANOL, WATER AND METHYL-METHOXYPROPIANATE METHANOL, WATER AND METHYL-METHOXYPROPIONATE BY USING METHYL ACRYLATE AND METHYL METHOXYPROPIONATE AS ENTRAINERS FOR THE WATER AND SEPARATING THE METHYL ACRYLATE FROM THE DISTILLATE.
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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |