US3689469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinyl alcohol and methyl methacrylate and uses therefor
Assignee: EIDP Inc
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Filing: 1969-07-15
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Granted: 1972-09-05
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Expires: 1989-07-15
Abstract
Abstract A COPOLYMER OF VINYL ALCOHOL AND METHYL METHACRYLATE IS PROVIDED WHICH POSSESSES PROPERTIES MAKING IT SUITABLE FOR A NUMBER OF USES WITH A PROPER BALANCE OF GEL RESISTANCE AND WATER SENSITIVITY REALIZED WHEN THE METHYL METHACRYLATE CONTENT IS BETWEEN ABOUT 3.5 AND 5 PERCENT BY WEIGHT. IN USES WHERE GEL RESISTANCE IS NOT IMPORTANT THE METHYL METHACRYLATE CONTENT CAN BE AS LOW AS 2 PERCENT. FOR TEXTILE WARP SIZING APPLICATIONS, PARTICULARLY FOR POLYESTER/COTTON BLENDS HEAT-SET IN THE GREIGE, THE METHYL METHACRYLATE CONTENT CAN BE SLIGHTLY HIGHER THAN 6 PERCENT, I.E., UP TO 6.5 PERCENT.
Inventors
- 👤 Harold Kirkwood Inskip
- 👤 Robert Leonard Adelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:34
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333; C; C08; C08F; C08F8/00; C08F8/44; D06M15/263; D06M15/267; 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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |