US3640931A
Expired / Lapsed
US
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Cross-linkable derivatives of an addition polymer in a substantially nonpolar organic liquid
Assignee: Dulux Australia Ltd
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Filing: 1968-10-15
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Granted: 1972-02-08
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Expires: 1988-10-15
Abstract
Abstract A PROCESS OF PREPARING A STABLE DISPERSION OF A CROSSLINKABLE DERIVATIVE OF AN ADDITION POLYMER IN A SUBSTANTIALLY NON-POLAR ORGANIC LIQUID. A DISPERSION OF A SUITABLY CHEMICALLY REACTIVE ADDITION POLYMER IS FIRST PREPARED IN THE LIQUID AND THEN AN UNSATURATED DERIVATIVE FORMED. THE DERIVATIVE IS CROSS-LINKABLE BY AN AUTOXIDATIVE OR FREE RADICAL INITIATED MECHANISM OR BOTH.
Inventors
- 👤 Michael Raymond Clarke
- 👤 Leon Filipowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:33
CPC Classifications
C; C08; C08F; C08F8/00; C08F2/00; C08F2/04; C08F2/06; C08F2/08; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 0
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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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |