US3698931A
Expired / Lapsed
US
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Method of grafting polymerizable monomers onto substrates
Assignee: Polymer Res Corp of America
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Filing: 1969-06-18
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Granted: 1972-10-17
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Expires: 1989-06-18
Abstract
Abstract A SUBSTRATE IS CONTACTED WITH A GRAFTING SOLUTION CONTAINING A SILVER SALT, A POLYMERIZABLE MONOMER AND A CATALYST WHICH IS ADAPTED TO ACTIVATE THE MONOMER TO POLYMERIZATION BY ITSELF BEING ACTIVATED BY METALLIC SILVER. THE SILVER ION IS REDUCED BY THE SUBSTRATE AND FORMS AN INSOLUBLE METALLIC SILVER DEPOSIT ON THE SUBSTRATE. THE METALLIC SILVER ACTIVATES THE CATALYST WHICH IN TURN ACTIVATES THE POLYMERIZATION REACTION SO THAT POLYMERIZATION TAKES PLACE AND THE FORMED POLYMER IS GRAFTED ONTO THE SUBSTRATE.
Inventors
- 👤 Carl Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:13
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/16; D; D06; D06M; D06M14/00; Y; Y10; Y10S; Y10S8/00; Y10S8/04; Y10S8/09; Y10S8/18; Y10S8/21
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |