US3645984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel acrylic monomers their preparation and treatment
Assignee: PPG Industries Inc
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Filing: 1969-04-30
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Granted: 1972-02-29
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Expires: 1989-04-30
Abstract
Abstract A NOVEL ACRYLIC MONOMER IS PREPARED BY REACTING A DIOL SUCH AS HO-CH2-C(-CH3)2-CH2-OOC-C(-CH3)2-CH2-OH WITH A ACRYLIC OR METHACRYLIC ACID OR THEIR ANHYDRIDES OR ACID CHLORIDES. THE REACTION PRODUCT IS A MONOMER WHICH MAY BE POLYMERIZED BY SUBJECTING IT TO IONINZING IRRADIATION, ACTINIC LIGHT, OR TO FREE-RADICAL CATALYSTS, AND THE RESULTING POLYMER IS A HARD, MAR-RESISTANT MATERIAL.
Inventors
- 👤 Rostyslaw Dowbenko
- 👤 Roger M Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/20
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |