Patent US3062885A successfully refreshed from Google Patents.
US3062885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of production of 2, 3, 4, 6-tetranitroaniline
Assignee: Individual
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Filing: 1959-05-07
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Granted: 1962-11-06
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Expires: 1979-05-07
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:51
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68; C07C209/76; C07C201/00; C07C201/06; C07C201/08; C07C209/30; C07C209/32; C07C209/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE PROCESS OF NITRATING META-NITROANILINE TO FORM 2,3,4,6-TETRSANITROANILINE COMPRISING THE STEPS OF: DISSOLVING ONE PART BY WEIGHT OF META-NITRONALINE IN ABOUT SEVEN TO FIFTEEM PARTS BY WEIGHT OF SULFURIC ACID TO FORM A FIRST SOLUTION, MIXING AN AMOUNT OF NITRIC ACID AT LEAST STOICHIOMETRICALLY SUFFICIENT TO NITRATE SAID META-NITROANILINE IN THE FIRST SOLUTION TO 2,3,4,6-TETRANITROANILINE TOGETHER WITH AN AMOUNT OF OLEUM CONTAINING AT LEAST SUFFICIENT SULFUR TRIOXIDE TO COMPLETELY REACT WITH ANY WATER PRESENT IN SAID NITRIC ACID TO FORM A SECOND SOLUTION, HEATING SAID FIRST AND SAID SECOND SOLUTIONS TO A TEMPERATURE GREATER THAN 45*C. BUT NOT EXCEEDING 110*C., CONTINUOUSLY INTRODUCING EACH OF SAID SOLUTIONS INTO A REACTION VESSEL TO FORM A MISTURE THEREOF THEREBY TO PRODUCE 2,3,4,6TETRANITROANILINE SUSPENDED IN SPENT ACID, CONTINUOUSLY WITHDRAWING THE SPENT ACID FROM THE REACTION VESSEL, AND REMOVING THE 2,3,4,6-TETRANITROANILINE FROM THE SPENT ACID.
Claim 2
Dependent Claim
140 words
THE PROCESS OF NITRATING META-NITROANILINE TO FORM 2,3,4,6-TETRSANITROANILINE COMPRISING THE STEPS OF: DISSOLVING ONE PART BY WEIGHT OF META-NITRONALINE IN ABOUT SEVEN TO FIFTEEM PARTS BY WEIGHT OF SULFURIC ACID TO FORM A FIRST SOLUTION, MIXING AN AMOUNT OF NITRIC ACID AT LEAST STOICHIOMETRICALLY SUFFICIENT TO NITRATE SAID META-NITROANILINE IN THE FIRST SOLUTION TO 2,3,4,6-TETRANITROANILINE TOGETHER WITH AN AMOUNT OF OLEUM CONTAINING AT LEAST SUFFICIENT SULFUR TRIOXIDE TO COMPLETELY REACT WITH ANY WATER PRESENT IN SAID NITRIC ACID TO FORM A SECOND SOLUTION, HEATING SAID FIRST AND SAID SECOND SOLUTIONS TO A TEMPERATURE GREATER THAN 45*C. BUT NOT EXCEEDING 110*C., CONTINUOUSLY INTRODUCING EACH OF SAID SOLUTIONS INTO A REACTION VESSEL TO FORM A MISTURE THEREOF THEREBY TO PRODUCE 2,3,4,6TETRANITROANILINE SUSPENDED IN SPENT ACID, CONTINUOUSLY WITHDRAWING THE SPENT ACID FROM THE REACTION VESSEL, AND REMOVING THE 2,3,4,6-TETRANITROANILINE FROM THE SPENT ACID.
References Cited (Backward Citations)
US1045011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |