US3583959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-stable vinyl chloride-acetate resins prepared in the presence of olefins
Assignee: Hexion Inc
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Filing: 1968-10-31
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Granted: 1971-06-08
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Expires: 1988-10-31
Abstract
Abstract THIS INVENTION RELATES TO VINYL CHLORIDE-ACETATE RESINS WITH IMPROVED STABILITY UNDER LONG EXPOSURE TO HEAT AS EVIDENCED BY SLOWER RATE OF DARKENING AND REDUCED TENDENCY TO "PUFF" AND TO THE MEANS OF MAKING SAID IMPROVED RESINS WHICH COMPRISES SUSPENSION-POLYMERIZING VINYL CHLORIDE AND VINYL ACETATE IN THE PRESENCE OF EFFECTIVE AMOUNTS OF A CONDITIONING AGENT SELECTED FROM THE GROUP CONSISTING OF NORMAL STRAIGHT CHAIN ALPHA OLEFINS HAVING AT LEAST SIX ATOMS.
Inventors
- 👤 Ping Kang Shen
- 👤 Eugene Norman Skiest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:34
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/08; C08F2/00; C08F2/04; C08F2/10; C08F214/00; C08F214/02; C08F214/04; C08F214/06
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |