US2861078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of benzotriazoles
Assignee: Individual
•
Filing: 1956-11-19
•
Granted: 1958-11-18
•
Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Emery B Miller
- 👤 George F Schlaudecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:21
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD FOR PRODUCING BENZOTRIAZOLES WHICH COMPRISES EFFECTING A MIXTURE IN AN AQUEOUS SYSTEM OF A NITRITE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OR ORTHOPHENYLENEDIAMINE AND SUBSTITUTED ORTHOPHENYLENEDIAMINES WHEREIN THE SUBSTITUENT IS ATTACHED TO A CARBON ATOM OF THE BENZENE RING, AND ADDING THERETO AT LEAST 1 CHEMICAL EQUIVALENT OF AN ACID REACTING SUBSTANCE HAVING A DISSOCIATION CONSTANT BETWEEN ABOUT 10-8 AND ABOUT 10**-1, WHICH ACID REACTING SUBSTANCE IS SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, GLYCOLIC ACID, DIGLYCOLIC ACID, CARBONIC ACID, ACIDS HAVING THE GENERIC FORMULA R-COOH, WHERE R IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS HAVING FROM 1 TO 5 CARBON ATOMS, AND ACIDS HAVING THE GENERIC FORMULA
Claim 2
Independent Claim
118 words
A METHOD FOR PRODUCING BENZOTRIAZOLES WHICH COMPRISES EFFECTING A MIXTURE IN AN AQUEOUS SYSTEM OF A NITRITE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OR ORTHOPHENYLENEDIAMINE AND SUBSTITUTED ORTHOPHENYLENEDIAMINES WHEREIN THE SUBSTITUENT IS ATTACHED TO A CARBON ATOM OF THE BENZENE RING, AND ADDING THERETO AT LEAST 1 CHEMICAL EQUIVALENT OF AN ACID REACTING SUBSTANCE HAVING A DISSOCIATION CONSTANT BETWEEN ABOUT 10-8 AND ABOUT 10**-1, WHICH ACID REACTING SUBSTANCE IS SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, GLYCOLIC ACID, DIGLYCOLIC ACID, CARBONIC ACID, ACIDS HAVING THE GENERIC FORMULA R-COOH, WHERE R IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS HAVING FROM 1 TO 5 CARBON ATOMS, AND ACIDS HAVING THE GENERIC FORMULA
References Cited (Backward Citations)
US2410619A
Cited
US2407204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |