US3108100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of organic isocyanates with organic hydroxides
Assignee: Imperial Chemical Industries Ltd
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Filing: 1958-06-09
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Granted: 1963-10-22
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Expires: 1978-06-09
Abstract
No abstract record available.
Inventors
- 👤 Tate Francis Edward Gervase
- 👤 Wild James Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:23
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; C07; C07D; C07D229/00; C08G18/02; C08G18/022; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
A PROCESS FOR THE MANUFACTURE OF AN ORGANIC ISOCYANURATE WHICH COMPRISES POLYMERIZING A MIXTURE CONSISTING ESSENTIALLY OF ORGANIC ISOCYANATE SELECTED FROM THE GROUP CONSISTING OF MONOCARBOCYCLIC AROMATIC AND ALKYL MONO- AND POLYISOCYANATES SUBSTITUTED ONLY WITH LOWER ALKYL, LOWER ALKOXY, HALOGEN AND NITRO GROUPS, AND AT LEAST ONE POLYMERIZATION CATALYST SELECTED FROM THE GROUP CONSISTING OF TRI-A,A''-DIPYRIDYL FERROUS DIHYDROXIDE, QUATERNARY HYDROXIDES DERIVED FROM NITROGEN, PHOPHORUS, ARSENIC AND ANTIMONY AND TERNARY HYDROXIDES DERIVED FROM SULFUR AND SELENIUM IN WHICH THE FOUR SUBSTITUENTS OF THE NITROGEN, PHOSPHORUS, ARSENIC AND ANTIMONY AND THE THREE SUBSTITUENTS OF THE SULFUR AND SELENIUM ATOMS ARE SELECTED FROM THE CLASS CONSISTING OF LOWER ALKYL, MONO-CYCLIC ARYL AND MONOCYCLIC ARALKYL GROUPS.
Claim 2
Dependent Claim
112 words
A PROCESS FOR THE MANUFACTURE OF AN ORGANIC ISOCYANURATE WHICH COMPRISES POLYMERIZING A MIXTURE CONSISTING ESSENTIALLY OF ORGANIC ISOCYANATE SELECTED FROM THE GROUP CONSISTING OF MONOCARBOCYCLIC AROMATIC AND ALKYL MONO- AND POLYISOCYANATES SUBSTITUTED ONLY WITH LOWER ALKYL, LOWER ALKOXY, HALOGEN AND NITRO GROUPS, AND AT LEAST ONE POLYMERIZATION CATALYST SELECTED FROM THE GROUP CONSISTING OF TRI-A,A''-DIPYRIDYL FERROUS DIHYDROXIDE, QUATERNARY HYDROXIDES DERIVED FROM NITROGEN, PHOPHORUS, ARSENIC AND ANTIMONY AND TERNARY HYDROXIDES DERIVED FROM SULFUR AND SELENIUM IN WHICH THE FOUR SUBSTITUENTS OF THE NITROGEN, PHOSPHORUS, ARSENIC AND ANTIMONY AND THE THREE SUBSTITUENTS OF THE SULFUR AND SELENIUM ATOMS ARE SELECTED FROM THE CLASS CONSISTING OF LOWER ALKYL, MONO-CYCLIC ARYL AND MONOCYCLIC ARALKYL GROUPS.
Claim 3
Dependent Claim
22 words
A PROCESS FOR THE MANUFACTURE OF AN ISOCYANURATE AS SET FORTH IN CLAIM 1 IN WHICH SAID POLYMERIZATION CATALYST IN TETRAETHYLAMMONIUM HYDROXIDE.
References Cited (Backward Citations)
CA512209A
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DE703229C
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US2671082A
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US2683144A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |