US3787368A
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US
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Process for preparing a polymer com-prising reacting a metal halide with an amide followed by condensation with an aldehyde,said metal being zirconium,hafnium or titanium
Assignee: Poly Chem Industries Inc
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Filing: 1971-08-04
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Granted: 1974-01-22
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Expires: 1991-08-04
Abstract
Abstract POLYMERIC MATERIALS ARE PREPARED BY POLYMERIZING AN ORGANIC COMPOUND CONTAINING AT LEAST TWO LABILE HYDROGENS IN THE PRESENCE OF A ZIRCONIUM, HAFNIUM OR TITANIUM HALIDE. THE LABILE HYDROGEN ATOMS ARE PROVIDED BY AMIDES, INCLUDING AMINOPLASTS, CARBOXYLIC ACID, POLYHYDROXY COMPOUNDS OR OTHER COMPOUNDS CAPABLE OF FORMING REACTIVE, COMPLEXES WITH ZIRCONIUM, HAFNIUM AND TITANIUM HALIDES. AQUEOUS MEDIA CAN BE EMPLOYED.
Inventors
- 👤 H Lander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G12/00; C08G12/02; C08G12/40; C08G14/00; C08G14/02; C08G14/04; C08G14/12
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |