US3644577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl halide polymeric blends
Assignee: Monsanto Co
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Filing: 1968-12-11
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Granted: 1972-02-22
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Expires: 1988-12-11
Abstract
Abstract A POLYMERIC BLEND IS PREPARED FROM A VINYL HALIDE POLYMER AND AN INTERPOLYMER FORMED A MAJOR AMOUNT OF AN ETHYLENICALLY UNSTATURATED NITRIL MONOMER AND A MINOR AMOUNT OF COPOLYMERIZABLE MONOMER FROM THE GROUP OF MONOVINLIDENC AROMATIC HYDROCARBONS, ACRYLIC ACIDS, ACRYLIC ESTERS AND VINYL ESTERS. THE BLENDS EXHIBIT SIGNIFICANTLY IMPROVED BARRIER PROPERTIES IN ADDITION TO HEAT RESISTANT AND PROCESSABILITY, WHILE MAINTAINING OR IMPROVING OTHER PORPERTIES INCLUDING TOUGHNESS.
Inventors
- 👤 Yoon Chai Lee
- 👤 Quirino A Trementozzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:13
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L51/00; C08L51/003; C08L33/00; C08L33/18; C08L33/20
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |