Patent US3649577A successfully refreshed from Google Patents.
US3649577A
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Synergistic stabilizer for halogenated resins and resin compositions stabilized therewith
Assignee: Carlisle Chemical Works Inc
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Filing: 1970-01-07
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Granted: 1972-03-14
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Expires: 1990-01-07
Abstract
Abstract A COMBINATION OF MAGNESIUM MALEATE AND A ZINC SALT OF AN ALIPHATIC CARBOXYLIC ACID PRODUCES A HALOGENATED RESIN STABILIZER HAVING SYNERGISTIC PROPERTIES. THE STABLIZER IS PARTICULARLY USEFUL POLYVINYL CHLORIDE FOOD PACKAGING MATERIALS AND SMALL AMOUNTS OF A PHENOLIC ANTIOXIDANT WILL FURTHER IMPROVE STABILIZATION.
Inventors
- 👤 Robert D Dworkin
- 👤 Christian H Stapfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:41
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |