US2732392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of kocyanates from isocy-
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
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Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:18
CPC Classifications
C; C07; C07C; C07C263/00; C07C263/16; C07C269/00; C07C269/04; C07C273/00; C07C273/18; C07C273/1809; C07C273/1836; C07C273/1845; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE METHOD OF PREPARING MONOCARBAMYL HALIDES AND THE CORRESPONDING ISOCYANIC ACID ESTERS, WHICH COMPRISES REACTING TOGETHER, IN THE VAPOR PHASE, A MATERIAL SELECTED FROM THE GROUP CONSISTING OF IOCYANIC ACID AND COMPOUNDS DECOMPOSING INTO ISOCYANIC ACID, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANIC PRIMARY AMINES AND THEIR HYDROGEN HALIDE SALTS, AND A HYDROGEN HALIDE, SAID FIRST TWO REACTANTS BEING EMPLOYED IN A MOLAR RATIO OF THE FIRST REACTANT, BASIC ISOCYANIC ACID, TO THE SECOND OF ABOUT 1.0 TO ABOUT 8.0, SAID THIRD REACTANT BEING EMPLOYED IN AN AMOUNT VARYING FROM ABOUT 1 EQUIVALENT UP TO SUBSTANTIALLY IN EXCESS OF THE STOICHIOMETRICALLY REQUIRED TO CONVERT THE PRODUCT OF THE REACTION INTO THE CORRESPONDING CARBAMYL HALIDE AND SAID REACTION BEING CARRIED OUT AT A TEMPERATURE SUFFICIENTLY HIGH TO CONVERT SAID REACTANTS INTO THE VAPOR PHASE BUT BELOW THAT TEMPERATURE AT WHICH SUBSTANTIAL DECOMPOSITION OF THE RESULTING ISOCYANIC ACID ESTERS TAKES PLACE.
Claim 2
Independent Claim
151 words
THE METHOD OF PREPARING MONOCARBAMYL HALIDES AND THE CORRESPONDING ISOCYANIC ACID ESTERS, WHICH COMPRISES REACTING TOGETHER, IN THE VAPOR PHASE, A MATERIAL SELECTED FROM THE GROUP CONSISTING OF IOCYANIC ACID AND COMPOUNDS DECOMPOSING INTO ISOCYANIC ACID, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANIC PRIMARY AMINES AND THEIR HYDROGEN HALIDE SALTS, AND A HYDROGEN HALIDE, SAID FIRST TWO REACTANTS BEING EMPLOYED IN A MOLAR RATIO OF THE FIRST REACTANT, BASIC ISOCYANIC ACID, TO THE SECOND OF ABOUT 1.0 TO ABOUT 8.0, SAID THIRD REACTANT BEING EMPLOYED IN AN AMOUNT VARYING FROM ABOUT 1 EQUIVALENT UP TO SUBSTANTIALLY IN EXCESS OF THE STOICHIOMETRICALLY REQUIRED TO CONVERT THE PRODUCT OF THE REACTION INTO THE CORRESPONDING CARBAMYL HALIDE AND SAID REACTION BEING CARRIED OUT AT A TEMPERATURE SUFFICIENTLY HIGH TO CONVERT SAID REACTANTS INTO THE VAPOR PHASE BUT BELOW THAT TEMPERATURE AT WHICH SUBSTANTIAL DECOMPOSITION OF THE RESULTING ISOCYANIC ACID ESTERS TAKES PLACE.
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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |