US3763269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters from tris(2-hydroxyalkyl)isocyanurate homopolymers
Assignee: Honeywell International Inc
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Filing: 1969-02-18
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Granted: 1973-10-02
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Expires: 1989-02-18
Abstract
Abstract HOMOPOLYMERS OF TRIS(2-HYDROXYALKYL)ISOCYANURATE ARE POLYESTERIFIED WITH POLYCARBOXYLIC ACID. THE POLYESTERS MAY BE MODIFIED WITH POLYISOCYANATE, METAL DRIER, PHENOL-FORMALKEHYDE OR TRIAZINE-FORMALDEHYDE RESINS, OR POLYHYDRIC ALCOHOLS TO PROVIDE ELECTRICAL INSULATOR MATERIAL FOR WIRE ENAMELS AND VARNISHES, AND CAN ALSO FORM ESTER-IMIDE COPOLYMERS. THE HOMOPOLYMER IS PREPARED BY DISSOLVING THE ISOCYANURATE MONOMER AND ACID CATALYST IN WATER AND THEN AZEOTROPING OFF THE SOLVENT WATER AND UP TO 0.75 MOL OF WATER OF CONDENSATION PER MOL OF ISOCYANURATE MONOMER.
Inventors
- 👤 R Formaini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:18
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/46; C08G18/4615; C08G18/4638; C08G18/4661; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G65/00; C08G65/34
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |