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Patent US3697463A successfully refreshed from Google Patents.
US3697463A
Expired / Lapsed
US
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Vinyl chloride resins stabilized with metal compound-epoxy compound-phosphite combinations
Assignee: Interstab Ltd
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Filing: 1967-09-06
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Granted: 1972-10-10
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Expires: 1987-09-06
Abstract
Abstract HALOGEN CONTAINING RESINS. E.G., VINYL CHLORIDE RESINS, AND DIOLEFIN POLYMERS, E.G., BUTADIENE-STYRENE RUBBER AND ACRYLONITRILE-BUTADIENE-STYRENE TERPOLYMER FARE STABILIZED, E.G., AGAINST HEAT BY MIXED PHOSPHITES HAVING AT LEAST ONE ARYL GROUP HAVNG AN ORTHO OR PARA DIRECTION RING ACTIVATING SUBSTIUENT AND AT LEAST ONE ALKYL OR ALICYCLIC GROUP. THE PREFERRED ALKYL OR ALICYCLIC GROUP IF CYCLOHEXYL. SOME OF THE COMPOUNDS, PARTICULARLY THOSE HAVING CYCLOHEXYL GROUPS, ARE NOVEL PER SE AS ARE COMPOUNDS IN WHICH THE ARYL GROUP HAS AN AMINO, AMIDO, ACETYL OR ACYLOXY SUBSTITUENT.
Inventors
- 👤 Vincent Oakes
- 👤 David F W Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/1411; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |