US3088948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of tris
Assignee: —
•
Filing: —
•
Granted: 1963-05-07
•
Expires: 1980-05-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:07
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A TRIS-2-HYDROXYALKYL ISOCYANURATE OF THE FORMULA:
Claim 2
Dependent Claim
6 words
A TRIS-2-HYDROXYALKYL ISOCYANURATE OF THE FORMULA:
Claim 3
Independent Claim
84 words
A METHOD OF PREPARING A TRIS-2-HYDROXYALKYL ISOCYANURATE WHICH COMPRISES REACTING CYANURIC ACID WITH AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND BUTYLENE OXIDE, IN MOL RATIO OF ABOUT 2 TO 5 MOLS OF ALKYLENE OXIDE PER MOL OF CYANURIC ACID AT TEMPERATURE OF ABOUT 25* TO 140*C. IN THE PRESENCE OF AN INERT SOLVENT FOR BOTH THE CYANURIC ACID AND ALKYLENE OXIDE AND AN ALKALINE CATALYST, AND RECOVERING THE TRIS-2-HYDROXYALKYL ISOCYANURATE THEREBY FORMED FROM THE RESULTANT REACTION MASS.
Claim 4
Independent Claim
84 words
A METHOD OF PREPARING A TRIS-2-HYDROXYALKYL ISOCYANURATE WHICH COMPRISES REACTING CYANURIC ACID WITH AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND BUTYLENE OXIDE, IN MOL RATIO OF ABOUT 2 TO 5 MOLS OF ALKYLENE OXIDE PER MOL OF CYANURIC ACID AT TEMPERATURE OF ABOUT 25* TO 140*C. IN THE PRESENCE OF AN INERT SOLVENT FOR BOTH THE CYANURIC ACID AND ALKYLENE OXIDE AND AN ALKALINE CATALYST, AND RECOVERING THE TRIS-2-HYDROXYALKYL ISOCYANURATE THEREBY FORMED FROM THE RESULTANT REACTION MASS.
References Cited (Backward Citations)
US2381121A
Cited
US2414289A
Cited
US2905671A
Cited
US2716137A
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US2809942A
Cited
US2866802A
Cited
GB814511A
Cited
US2977371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |