US3042682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of pyridine alcohols
Assignee: —
•
Filing: —
•
Granted: 1962-07-03
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Expires: 1979-07-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
METHOD FOR THE PREPARATION OF MONOMETHYLOL DERIVATIVES OF ALKYLPYRIDINES WHICH COMPRISES REACTING AN ALKYLPYDIDINE SELECTED FROM THE GROUP CONSISTING OF 2-PICOLINE, 4-PICOLINE, AND 5-ETHYL-2-METHYLPYRIDINE WITH FORMALDEHYDE UNDER A BLANKET OF AN INERT GAS AT A PRESSURE BETWEEN ABOUT 1 AND ABOUT 150 ATMOSPHERES, AT A TEMPERATURE BETWEEN ABOUT 200*C. AND ABOUT 320*C., FOR A PERIOD BETWEEN ABOUT 3 AND 7 MINUTES, THE MOLAR RATIO OF FORMALDEHYDE TO ALKYLPYRIDINE BEING BETWEEN 0.35:1 AND 0.65:1, THEN RAPIDLY COOLING THE REACTION MIXTURE TO BELOW 100*C., AND RECOVERING THE MONOMETHYLOL DERIVATIVE THEREFROM.
Claim 2
Dependent Claim
88 words
METHOD FOR THE PREPARATION OF MONOMETHYLOL DERIVATIVES OF ALKYLPYRIDINES WHICH COMPRISES REACTING AN ALKYLPYDIDINE SELECTED FROM THE GROUP CONSISTING OF 2-PICOLINE, 4-PICOLINE, AND 5-ETHYL-2-METHYLPYRIDINE WITH FORMALDEHYDE UNDER A BLANKET OF AN INERT GAS AT A PRESSURE BETWEEN ABOUT 1 AND ABOUT 150 ATMOSPHERES, AT A TEMPERATURE BETWEEN ABOUT 200*C. AND ABOUT 320*C., FOR A PERIOD BETWEEN ABOUT 3 AND 7 MINUTES, THE MOLAR RATIO OF FORMALDEHYDE TO ALKYLPYRIDINE BEING BETWEEN 0.35:1 AND 0.65:1, THEN RAPIDLY COOLING THE REACTION MIXTURE TO BELOW 100*C., AND RECOVERING THE MONOMETHYLOL DERIVATIVE THEREFROM.
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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |