Patent US2536849A successfully refreshed from Google Patents.
US2536849A
Expired / Lapsed
US
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Method of preparing an
Assignee: —
•
Filing: —
•
Granted: 1951-01-02
•
Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:53
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; C08; C08G; C08G18/00; C08G18/02; C08G18/022; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/065; C08G73/0655
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF PREPARING AN ISOCYANURIC TRIESTER WHICH COMPRISES EFFECTING REACTION UNDER HEAT BETWEEN (1) AN ALKALI-METAL CYANATE AND (2) A HYDROCARBON HALIDE RESPRESENTED BY THE FORMULA RX, WHERE X REPRESENTS HALOGEN AND R REPRESENTS A RADICAL SELECTED FROM THE CLASS CONSISTING OF ALKYL, ALKENYL, ARALKYL AND ARALKENYL RADICALS, SAID REACTION BEING EFFECTED WHILE THE REACTANTS OF (1) AND (2) ARE ADMIXED WITH AN INERT, NON-HYDROXYLATED SOLUBILIZING AGENT FOR IMPROVING THE SOLUBILITY OF THE ALKALI-METAL CYANATE IN THE REACTION MASS, SAID SOLUBILIZING AGENT BEING SELECTED FROM THE CLASS CONSISTING OF ACETONITRILE, PROPIONITRILE, B-METHOXYPROPIONITRILE, DIMETHYLCYANAMIDE, ACETONE, DIOXANE AND NITROBENZENE, AND ISOLATING THE ISOCYANURIC TRIESTER THEREBY PRODUCED FROM THE RESULTING REACTION MASS.
Claim 2
Independent Claim
110 words
THE METHOD OF PREPARING AN ISOCYANURIC TRIESTER WHICH COMPRISES EFFECTING REACTION UNDER HEAT BETWEEN (1) AN ALKALI-METAL CYANATE AND (2) A HYDROCARBON HALIDE RESPRESENTED BY THE FORMULA RX, WHERE X REPRESENTS HALOGEN AND R REPRESENTS A RADICAL SELECTED FROM THE CLASS CONSISTING OF ALKYL, ALKENYL, ARALKYL AND ARALKENYL RADICALS, SAID REACTION BEING EFFECTED WHILE THE REACTANTS OF (1) AND (2) ARE ADMIXED WITH AN INERT, NON-HYDROXYLATED SOLUBILIZING AGENT FOR IMPROVING THE SOLUBILITY OF THE ALKALI-METAL CYANATE IN THE REACTION MASS, SAID SOLUBILIZING AGENT BEING SELECTED FROM THE CLASS CONSISTING OF ACETONITRILE, PROPIONITRILE, B-METHOXYPROPIONITRILE, DIMETHYLCYANAMIDE, ACETONE, DIOXANE AND NITROBENZENE, AND ISOLATING THE ISOCYANURIC TRIESTER THEREBY PRODUCED FROM THE RESULTING REACTION MASS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |