Patent US3660331A successfully refreshed from Google Patents.
US3660331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl halide resins stabilized with tetrahydropyranyl esters and ethers
Assignee: Henkel Corp
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Filing: 1970-04-29
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Granted: 1972-05-02
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Expires: 1990-04-29
Abstract
Abstract STABILIZATION OF VINYL HALIDE AND VINYL HALIDE COPOLYMER RESIN COMPOSITIONS AGAINST DEGRADATION BY HEAT AND THE LIKE BY INCORPORATING THEREIN TETRAHYDRPYRANYL ETHERS OR ESTERS. VINYLY HALIDE RESIN STABILIZED COMPOSITIONS CONTAINING TETRAHYDROPYRANYL ETHERS OR ESTERS ARE EMPLOYED IN COMBINATION WITH METALLIC SOAPS, EPOXIDIZED FATTY COMPOUNDS, ORGANIC CHELATORS AND PLASTICIZERS. EFFECTIVE AND EVEN SYNERGISTIC STABILIZING ACTIVITIES ARE DEMONSTRATED BY THE DISCLOSED COMPOSITIONS.
Inventors
- 👤 Jerome H Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1545; C08K5/36; C08K5/37; C08K5/378
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |